This post will walk you through Android ListView Tutorial for building simple and customized ListView using different Android adapters.
List is one of the most common UI patterns, which is being used extensively to display the collection of data elements in rows. In android ListView is a view group that displays a list of scrollable items. The list items are automatically inserted to the list using an Adapter that pulls content from a source such as an array.
Lecture Slides for List Views [Android ]Nehil Jain
The document discusses list views and adapters for software development on portable devices. It describes the problem of loading large lists inefficiently and solutions like populating views on demand. It explains Android list views and adapters, including how they recycle views to reduce object churn. It provides examples of using list activities with different adapter types and layouts, and discusses optimizing performance by reusing views and using a view holder pattern.
The document discusses ListViews in Android, including introducing AdapterViews and common adapter types like ArrayAdapter. It covers implementing a basic ListView with an ArrayAdapter, using custom adapters, view holders for optimization, adding listeners, headers/footers, and using ListActivity for simplified list handling.
The document provides instructions for creating a custom list view in Android. It explains that a list view displays data items and uses an adapter to link the data to views. It demonstrates how to create a custom adapter class that extends BaseAdapter and overrides methods like getCount(), getItem(), and getView(). The getView() method is used to inflate a custom row layout and populate it with data for each list item. The document also shows how to set up the list view in an activity's layout, populate it with sample data, and assign the custom adapter.
Android Training (AdapterView & Adapter)Khaled Anaqwa
The AdapterView is a ViewGroup that displays data through an Adapter. Common subclasses are ListView, Spinner, and Gallery. The Adapter provides the data and Views for each item. AdapterView is responsible for displaying the items and handling user selection. ListActivity simplifies displaying a list bound to an Adapter. The Adapter populates the list and notifies the AdapterView of data changes.
Android UI adapters allow AdapterViews like ListView and Spinner to display data. AdapterViews rely on Adapters to provide Views for each data item. Adapters implement interfaces like ListAdapter and bind data to Views. ListActivity makes it easy to display a list using a ListAdapter like ArrayAdapter. Spinner displays a single child and uses a SpinnerAdapter to provide its dropdown options.
An adapter in Android acts as a bridge between an AdapterView and the underlying data for that view. The adapter provides access to the data items and is responsible for creating a view for each item. There are two main types of adapter views: ListView and Spinner. An AdapterView handles filling its layout with data through an adapter and handling user selections by setting an OnItemClickListener. Developers can use a ListActivity, which simplifies working with lists by automatically creating a ListView, or extend Activity and manually create the ListView.
Android App Development - 11 Lists, grids, adapters, dialogs and toastsDiego Grancini
The document discusses different Android UI components including list views, grid views, adapters, dialogs, and toasts. It explains that list views and grid views display data from arrays or cursors using adapters. Adapters define how data is inserted and each element is displayed. Common adapter classes include ArrayAdapter, SimpleAdapter, and CursorAdapter. Dialogs create popup windows to prompt users for input. Standard dialogs include AlertDialog, DatePickerDialog, and ProgressDialog. Toasts briefly display short non-interactive messages on screen.
An adapter is used to connect data from a data source to views in an AdapterView like a ListView. The adapter provides the views for each item in the data set by inflating a layout. To create a list with images, you make a custom ArrayAdapter subclass that overrides getView() to set the text and image for each item based on its name. You provide layout XML for each list item and start a ListActivity to display the list.
Lecture Slides for List Views [Android ]Nehil Jain
The document discusses list views and adapters for software development on portable devices. It describes the problem of loading large lists inefficiently and solutions like populating views on demand. It explains Android list views and adapters, including how they recycle views to reduce object churn. It provides examples of using list activities with different adapter types and layouts, and discusses optimizing performance by reusing views and using a view holder pattern.
The document discusses ListViews in Android, including introducing AdapterViews and common adapter types like ArrayAdapter. It covers implementing a basic ListView with an ArrayAdapter, using custom adapters, view holders for optimization, adding listeners, headers/footers, and using ListActivity for simplified list handling.
The document provides instructions for creating a custom list view in Android. It explains that a list view displays data items and uses an adapter to link the data to views. It demonstrates how to create a custom adapter class that extends BaseAdapter and overrides methods like getCount(), getItem(), and getView(). The getView() method is used to inflate a custom row layout and populate it with data for each list item. The document also shows how to set up the list view in an activity's layout, populate it with sample data, and assign the custom adapter.
Android Training (AdapterView & Adapter)Khaled Anaqwa
The AdapterView is a ViewGroup that displays data through an Adapter. Common subclasses are ListView, Spinner, and Gallery. The Adapter provides the data and Views for each item. AdapterView is responsible for displaying the items and handling user selection. ListActivity simplifies displaying a list bound to an Adapter. The Adapter populates the list and notifies the AdapterView of data changes.
Android UI adapters allow AdapterViews like ListView and Spinner to display data. AdapterViews rely on Adapters to provide Views for each data item. Adapters implement interfaces like ListAdapter and bind data to Views. ListActivity makes it easy to display a list using a ListAdapter like ArrayAdapter. Spinner displays a single child and uses a SpinnerAdapter to provide its dropdown options.
An adapter in Android acts as a bridge between an AdapterView and the underlying data for that view. The adapter provides access to the data items and is responsible for creating a view for each item. There are two main types of adapter views: ListView and Spinner. An AdapterView handles filling its layout with data through an adapter and handling user selections by setting an OnItemClickListener. Developers can use a ListActivity, which simplifies working with lists by automatically creating a ListView, or extend Activity and manually create the ListView.
Android App Development - 11 Lists, grids, adapters, dialogs and toastsDiego Grancini
The document discusses different Android UI components including list views, grid views, adapters, dialogs, and toasts. It explains that list views and grid views display data from arrays or cursors using adapters. Adapters define how data is inserted and each element is displayed. Common adapter classes include ArrayAdapter, SimpleAdapter, and CursorAdapter. Dialogs create popup windows to prompt users for input. Standard dialogs include AlertDialog, DatePickerDialog, and ProgressDialog. Toasts briefly display short non-interactive messages on screen.
An adapter is used to connect data from a data source to views in an AdapterView like a ListView. The adapter provides the views for each item in the data set by inflating a layout. To create a list with images, you make a custom ArrayAdapter subclass that overrides getView() to set the text and image for each item based on its name. You provide layout XML for each list item and start a ListActivity to display the list.
DynamicRecord extends the Ruby on Rails’ ActiveRecord
(AR) object-relational mapping (ORM) module, enabling creation of
dynamic attributes that look and behave like standard AR ones without
the need to add tables or columns to the database.
This document provides a tutorial for setting up a many-to-many relationship in a Rails application. It describes creating Expense and Tag models with a joining ExpensesTags table. It details the necessary code for the models, views, and controller to associate expenses with multiple tags. Users can select multiple tags when creating or editing an expense, which are stored in the joining table. The tutorial concludes by demonstrating adding an expense with multiple tags and viewing the associated data.
The document discusses various techniques for developing efficient Android user interfaces (UIs), including using adapters, view holders, pre-scaling bitmaps, custom views, custom layouts, and more. Adapters act as a bridge between data and views. View holders minimize finding views repeatedly. Pre-scaling bitmaps improves performance over scaling at runtime. Custom views and layouts allow defining user-defined UI elements.
This document provides steps to create a custom ListView in Android. It involves creating a layout file for list item rows, a DataModel class to store list item data, a CustomAdapter class to populate the ListView, and adding code to the activity's onCreate method to initialize the ListView. The CustomAdapter inflates the custom row layout, sets data from the DataModel, and adds an on click listener to each item. This allows clicking list items to display additional details in a Snackbar popup.
This document discusses styles and themes in Android development. It explains that styles define the format and look of UI elements, and can be applied to individual views or whole activities. Themes are similar to styles but apply formatting to an entire layout or activity. The document provides examples of defining styles and themes in XML files, extending existing styles, and applying themes in the Android manifest. It also covers best practices for style hierarchy and customizing default themes.
Create an android app for database creation using.pptxvishal choudhary
1) This document describes how to create an Android app to perform CRUD (create, read, update, delete) operations on a SQLite database.
2) It involves creating a SQLiteOpenHelper subclass to manage the database, along with methods to insert, query, update and delete data from the database table.
3) The Android app includes layout elements like buttons and text fields, and Java code to handle button clicks and call the appropriate database methods. Validation is also added to ensure required fields are populated.
This document discusses creating custom usage reports in EPiServer. It describes setting up a basic report interface using an ASPX page and assigning an EPiServer master page. It also covers populating the report by overriding the OnLoad method, retrieving content type and usage data from repositories, and generating statistics on total, deleted, and published content for each type. The next steps mentioned are to create additional reports, extract them into a separate project, and package the reports as a Nuget package for sharing.
The document discusses custom Ember Data adapters and self-defining apps. It explains that adapters provide an interface between the Ember Data store and an external data store. It then discusses how to build apps where the routes are unknown at development time by dynamically defining routes based on data from the external API. It provides an example workflow where a catch-all route makes API requests to extract metadata to generate and register new application routes on the fly.
The document discusses various techniques for developing efficient Android user interfaces (UIs), including using adapters, view holders, pre-scaling bitmaps, custom views, custom layouts, and more. Adapters act as a bridge between data and views. View holders minimize finding views repeatedly. Pre-scaling bitmaps improves performance over scaling at runtime. Custom views and layouts allow defining user-defined UI elements instead of using pre-defined ones only.
This document discusses generating custom documents from Salesforce data. It covers exporting record pages, reports, and spreadsheets to PDF and ZIP files from Apex and Lightning components. The agenda includes dynamic data export with PDF, accessing exports from Apex/Lightning, and packing files into scalable ZIP archives. Code samples demonstrate rendering record pages and reports to PDF using Visualforce and Apex.
The document discusses the entity-attribute-value (EAV) data model used in Magento, where attributes are stored in a separate table rather than columns. EAV provides flexibility but can result in inefficient queries; solutions include using a pivot table or Amazon SimpleDB which avoids complex queries and requires no database administration.
Indexes are optional database structures that improve the performance of queries on tables. Indexes work like the index in a book, allowing faster access to table data. The database automatically maintains indexes as the associated table data changes. Indexes can be created, dropped, or renamed as needed without affecting applications or other indexes.
The document discusses implementing an Entity-Attribute-Value (EAV) pattern for ActiveRecord models. It describes saving entity types as strings in an entity table, keeping attributes directly in the model, and using a polymorphic association between the entity and value. The implementation creates tables for each attribute type (string, integer, float, boolean), generates attribute models, and adds getter/setter methods to the entity model to access attribute values. It also discusses more advanced functionality like querying, ordering, and selecting specific attributes.
The document discusses various Android layouts including LinearLayout, RelativeLayout, FrameLayout, AbsoluteLayout, and TableLayout. LinearLayout arranges components vertically or horizontally based on an orientation attribute. RelativeLayout positions components relative to each other using attributes like above, below, left and right. FrameLayout displays one component at a time based on top-left positioning. AbsoluteLayout precisely positions each component using x and y coordinates. TableLayout organizes content into rows and columns with elements automatically spanning multiple columns if specified.
The document discusses different types of Android layouts including linear layout, relative layout, absolute layout, and frame layout. It provides code examples and brief descriptions of each layout type. For example, it explains that a linear layout organizes children into a single horizontal or vertical row, a relative layout specifies child object locations relative to each other or the parent, and a frame layout is designed to display a single item on screen. The document also mentions intents and including extras to perform runtime binding between application code.
The document describes how to use the FormView control in ASP.NET to display, insert, update and delete data from a database table. It explains that FormView uses templates like ItemTemplate, EditItemTemplate and InsertItemTemplate to display data. Code examples are provided to populate the FormView from a database, handle events like editing, inserting and updating records, and use FindControl to access form fields.
This document provides an overview of built-in functions in AS400 programming to help learn the AS400 system. It lists various functions such as %ABS, %CHAR, %CHECK, %DATE, %DAYS and others that perform operations like absolute value, character conversion, checking characters, converting to date, and getting the number of days. The document encourages visiting www.go4as400.com for more resources on learning AS400 programming.
CANNEXUS 2014 The One Way Stream Freeman WoolnoughFreemanCannexus
This document appears to be a counseling session discussing a case study of a client named Alex. Alex is a 32-year-old personal aide who wants to become a nurse but lacks the necessary education. The counselor discusses Alex's background, challenges, and motivations. They also cover counseling approaches like motivational interviewing, narrative therapy and cognitive behavioral therapy that could help Alex. The session aims to identify interventions and help Alex develop a plan to achieve his goal of becoming a nurse.
DynamicRecord extends the Ruby on Rails’ ActiveRecord
(AR) object-relational mapping (ORM) module, enabling creation of
dynamic attributes that look and behave like standard AR ones without
the need to add tables or columns to the database.
This document provides a tutorial for setting up a many-to-many relationship in a Rails application. It describes creating Expense and Tag models with a joining ExpensesTags table. It details the necessary code for the models, views, and controller to associate expenses with multiple tags. Users can select multiple tags when creating or editing an expense, which are stored in the joining table. The tutorial concludes by demonstrating adding an expense with multiple tags and viewing the associated data.
The document discusses various techniques for developing efficient Android user interfaces (UIs), including using adapters, view holders, pre-scaling bitmaps, custom views, custom layouts, and more. Adapters act as a bridge between data and views. View holders minimize finding views repeatedly. Pre-scaling bitmaps improves performance over scaling at runtime. Custom views and layouts allow defining user-defined UI elements.
This document provides steps to create a custom ListView in Android. It involves creating a layout file for list item rows, a DataModel class to store list item data, a CustomAdapter class to populate the ListView, and adding code to the activity's onCreate method to initialize the ListView. The CustomAdapter inflates the custom row layout, sets data from the DataModel, and adds an on click listener to each item. This allows clicking list items to display additional details in a Snackbar popup.
This document discusses styles and themes in Android development. It explains that styles define the format and look of UI elements, and can be applied to individual views or whole activities. Themes are similar to styles but apply formatting to an entire layout or activity. The document provides examples of defining styles and themes in XML files, extending existing styles, and applying themes in the Android manifest. It also covers best practices for style hierarchy and customizing default themes.
Create an android app for database creation using.pptxvishal choudhary
1) This document describes how to create an Android app to perform CRUD (create, read, update, delete) operations on a SQLite database.
2) It involves creating a SQLiteOpenHelper subclass to manage the database, along with methods to insert, query, update and delete data from the database table.
3) The Android app includes layout elements like buttons and text fields, and Java code to handle button clicks and call the appropriate database methods. Validation is also added to ensure required fields are populated.
This document discusses creating custom usage reports in EPiServer. It describes setting up a basic report interface using an ASPX page and assigning an EPiServer master page. It also covers populating the report by overriding the OnLoad method, retrieving content type and usage data from repositories, and generating statistics on total, deleted, and published content for each type. The next steps mentioned are to create additional reports, extract them into a separate project, and package the reports as a Nuget package for sharing.
The document discusses custom Ember Data adapters and self-defining apps. It explains that adapters provide an interface between the Ember Data store and an external data store. It then discusses how to build apps where the routes are unknown at development time by dynamically defining routes based on data from the external API. It provides an example workflow where a catch-all route makes API requests to extract metadata to generate and register new application routes on the fly.
The document discusses various techniques for developing efficient Android user interfaces (UIs), including using adapters, view holders, pre-scaling bitmaps, custom views, custom layouts, and more. Adapters act as a bridge between data and views. View holders minimize finding views repeatedly. Pre-scaling bitmaps improves performance over scaling at runtime. Custom views and layouts allow defining user-defined UI elements instead of using pre-defined ones only.
This document discusses generating custom documents from Salesforce data. It covers exporting record pages, reports, and spreadsheets to PDF and ZIP files from Apex and Lightning components. The agenda includes dynamic data export with PDF, accessing exports from Apex/Lightning, and packing files into scalable ZIP archives. Code samples demonstrate rendering record pages and reports to PDF using Visualforce and Apex.
The document discusses the entity-attribute-value (EAV) data model used in Magento, where attributes are stored in a separate table rather than columns. EAV provides flexibility but can result in inefficient queries; solutions include using a pivot table or Amazon SimpleDB which avoids complex queries and requires no database administration.
Indexes are optional database structures that improve the performance of queries on tables. Indexes work like the index in a book, allowing faster access to table data. The database automatically maintains indexes as the associated table data changes. Indexes can be created, dropped, or renamed as needed without affecting applications or other indexes.
The document discusses implementing an Entity-Attribute-Value (EAV) pattern for ActiveRecord models. It describes saving entity types as strings in an entity table, keeping attributes directly in the model, and using a polymorphic association between the entity and value. The implementation creates tables for each attribute type (string, integer, float, boolean), generates attribute models, and adds getter/setter methods to the entity model to access attribute values. It also discusses more advanced functionality like querying, ordering, and selecting specific attributes.
The document discusses various Android layouts including LinearLayout, RelativeLayout, FrameLayout, AbsoluteLayout, and TableLayout. LinearLayout arranges components vertically or horizontally based on an orientation attribute. RelativeLayout positions components relative to each other using attributes like above, below, left and right. FrameLayout displays one component at a time based on top-left positioning. AbsoluteLayout precisely positions each component using x and y coordinates. TableLayout organizes content into rows and columns with elements automatically spanning multiple columns if specified.
The document discusses different types of Android layouts including linear layout, relative layout, absolute layout, and frame layout. It provides code examples and brief descriptions of each layout type. For example, it explains that a linear layout organizes children into a single horizontal or vertical row, a relative layout specifies child object locations relative to each other or the parent, and a frame layout is designed to display a single item on screen. The document also mentions intents and including extras to perform runtime binding between application code.
The document describes how to use the FormView control in ASP.NET to display, insert, update and delete data from a database table. It explains that FormView uses templates like ItemTemplate, EditItemTemplate and InsertItemTemplate to display data. Code examples are provided to populate the FormView from a database, handle events like editing, inserting and updating records, and use FindControl to access form fields.
This document provides an overview of built-in functions in AS400 programming to help learn the AS400 system. It lists various functions such as %ABS, %CHAR, %CHECK, %DATE, %DAYS and others that perform operations like absolute value, character conversion, checking characters, converting to date, and getting the number of days. The document encourages visiting www.go4as400.com for more resources on learning AS400 programming.
CANNEXUS 2014 The One Way Stream Freeman WoolnoughFreemanCannexus
This document appears to be a counseling session discussing a case study of a client named Alex. Alex is a 32-year-old personal aide who wants to become a nurse but lacks the necessary education. The counselor discusses Alex's background, challenges, and motivations. They also cover counseling approaches like motivational interviewing, narrative therapy and cognitive behavioral therapy that could help Alex. The session aims to identify interventions and help Alex develop a plan to achieve his goal of becoming a nurse.
Δημιουργούνταν μια μυστηριακή εικόνα και ταυτόχρονα ειδυλλιακή για τους αθεράπευτα ρομαντικούς Ίωνες, που ονειρεύονταν την ορεινή εκείνη περιοχή του Βερμίου σαν τη χαμένη τους Πατρίδα........
Η πόλη της Έδεσσας βρίσκεται στον απόηχο της εκδήλωσης «Ο ΧΟΡΟΣ ΕΙΝΑΙ ΖΩΗ», που πραγματοποιήθηκε για τέταρτη χρονιά στην πόλη της Έδεσσας το Σάββατο 13 Ιουνίου 2015. ....
Με την κυκλοφορία του βιβλίου «ΟΙ ΠΑΤΡΟΓΟΝΙΚΕΣ ΡΙΖΕΣ ΤΩΝ ΚΟΜΝΗΝΙΩΤΩΝ». Εκδ. 1994, «Δίπτυχο», η σύγχρονη Νεολαία καλύπτει τις ανάγκες μάθησής της για την ιδιαίτερη Πατρίδα των παππούδων ...
«Κάθε βήμα προς το Ιστορικό Ψέμα και στην απόκρυψη της Αλήθειας από τις νεότερες γενιές, είναι ένα βήμα προς τον Εθνικό μας θάνατο».
Το παράδειγμα το Συλλόγου Ποντίων Βορείου Έβρου ο "Διγενής" όπως και άλλων Συλλόγων, είναι γόνιμο να το ακολουθήσουν όλοι οι Σύλλογοι εντός και εκτός συνόρων........η Φωνή πρέπει να δυναμώσει και δυστυχώς ένας Μάης δεν μπορεί να φέρει την Άνοιξη!!!!!
Η ανακατάληψη της Ιωνίας από τους Τούρκους είχε ως επακόλουθο την απελπισμένη φυγή των περισσότερων χριστιανών, που γλίτωσαν το μαχαίρι των σφαγέων. ....
Στην καλύβα του κυρ-Νικόλα, στον μεσαίο τοίχο της σάλας, κρέμονταν γονατιστή η εικόνα της Παναγίας στα πόδια του Χριστού, πλάι στο διπλό σιδερένιο κρεβάτι των νοικοκυραίων της........
Η ποντιακή είναι μια διάλεκτος της Ελληνικής γλώσσας που ξεκινά από τα χρόνια του αποικισμού των Ελλήνων της Ιωνίας και την εγκατάστσασή τους στον Πόντο τον 8ο π.Χ. αιώνα...
XpressRoam offers a proprietary mobile data platform that provides mobile data services to carriers when their customers' usual options fail. It redirects data requests to its network when a mobile device cannot connect to its home carrier's network. Customers can then purchase a day pass of data access using various payment methods. The service allows BYOD users to access data and the internet when they cannot get connectivity directly from their provider. It generates revenue for both XpressRoam and participating carriers by monetizing failed data requests.
In this presentation, I have shared the challenges that we have observed while working with customers on Ext JS projects. Also, I have explained the processes, tools, learning resources and other resources that helps us to deliver the best solution for our customers.
Public Affairs is critical to the reputation of the Civil Air Patrol and its connections to the communities it serves. Writing articles for CAP (either at the squadron, wing, or national level) is a way of sharing the stories that make the organization so important. Help others to learn about your experiences so that they can enjoy the opportunity of CAP!
Day 8: Dealing with Lists and ListViewsAhsanul Karim
The document discusses ListViews and ListActivities in Android. It covers:
1) Using the ListView and ListActivity classes to display scrollable lists of data from an Adapter.
2) Developing custom Adapters by extending the BaseAdapter class to provide data and convert it to list item views.
3) Techniques like view recycling and ViewHolders to improve ListView performance with large datasets.
4) Examples of creating ListActivities with ArrayAdapters, custom row layouts, and handling click/long click events.
This document discusses different types of adapters and lists in Android. It begins by explaining adapters and the two main types: ArrayAdapter and SimpleCursorAdapter. It then describes an exercise to create a student grades application using a list view, auto-complete text view, and custom list. The last section discusses four methods for implementing a custom list adapter: 1) using a LayoutInflater, 2) recycling views, 3) using a ViewHolder, and 4) using a RecyclerView. The document provides code examples for creating adapters and lists in each case.
This document discusses ListViews and ListActivities in Android application development. It covers:
- ListViews display scrollable lists via an Adapter that provides data and converts it to list fields. Standard adapters include ArrayAdapter and CursorAdapter.
- ListActivities simplify handling lists by extending the Activity class and providing list management methods like setListAdapter() and onListItemClick().
- Adapters can use default or custom layouts and the ListView recycles views for performance. Interacting with the underlying data model is also demonstrated.
Day 8: Dealing with Lists and ListViewsAhsanul Karim
The document discusses ListViews and ListActivities in Android. It covers:
- How ListViews display scrollable lists using an Adapter to provide data and layouts
- How ListActivities simplify list handling by predefining list interaction methods
- Implementing ArrayAdapters with standard or custom layouts
- Improving performance by recycling list item views
- Creating custom adapters to define flexible row layouts
- Allowing row views to interact with the underlying data model
The document outlines key concepts for Android app code advancement including arrays, lists, array adapters, list views, and recycler views. It provides details on each concept, such as arrays being used to store multiple values of the same data type and array adapters acting as bridges between data sources and UI components. Additionally, it proposes a mini photo gallery app example and discusses the scope and future of Android development in Pakistan.
Grid View- GridView is a ViewGroup that displays items in a two d.pdfdeepua8
GridView displays items in a two-dimensional scrollable grid with items added using an Adapter. The Adapter manages the data model and provides data to the view. GridView follows the MVC pattern. ScrollView allows scrolling of a view hierarchy larger than the display. It contains one child view that can itself be a complex layout. ScrollView only supports vertical scrolling. ListView creates a scrollable list of items added using a ListAdapter, which extends Adapter to connect the ListView to its backing data. ListViews can display any data wrapped in a ListAdapter.
This document provides an overview of beginning native Android app development. It discusses Android app structure including the manifest, activities, intents and lifecycles. It also covers common Android views and layouts, accessing device capabilities like the camera and location, working with data via content providers, and rendering with OpenGL. Example code is provided for various app features like input handling, scrollable lists, and camera access. The document concludes with the process for submitting an app to the Google Play Store.
This document provides an overview of key concepts for developing Android applications, including app components like Activities and Services, how to handle user interfaces with Views and Layouts, and how to retrieve and display data using ListViews, GridViews, and Adapters. It also covers concepts like Intents, permissions, themes and styles.
The document provides instructions for building an Android app that makes an API call to GitHub to retrieve a list of Java developers in Nairobi. It retrieves the data using Volley, parses the JSON response, and displays the developer names, images, and URLs in a RecyclerView with CardViews. It also describes how to set up an adapter to connect the data to the RecyclerView items, create a model class to store the developer data, and add a click handler to launch a profile activity with more details when an item is tapped.
This document provides instructions for creating a basic ToDo list Android application from scratch. It describes creating an Android project called ToDoList, modifying the main layout file to include an EditText, Button, and ListView within a LinearLayout, and giving each widget an ID. It then explains getting references to these widgets in the main activity class, creating an ArrayList to store todo items and an ArrayAdapter to bind the list to the ListView. Finally, it details adding an onClickListener to the button to add new items to the ArrayList and notify the adapter of changes. Running the application should display an editable todo list.
The document outlines the requirements and topics to be covered in an Android training, including developing layouts using XML and Java, running and debugging Android applications, using intents and bundles to pass data between activities, and handling basic data storage using SQLite and memory management. It also provides references and questions for trainees to refer to for more information on Android development concepts and best practices.
This document provides details on the development of an Android application to display employee details. It consists of 11 pages describing the steps taken to build the app, including: setting up the basic layout; working with lists and a SQLite database; passing information between activities using intents; interacting with phone capabilities like calling and texting; and navigating the organizational chart. Code snippets are provided for key Java classes and XML layout files involved in implementing the various features at each step. The roles of team members are also listed.
RelativeLayout and GridLayout allow for flexible layout design in Android applications. RelativeLayout positions elements relative to each other and the parent container using properties like alignParentTop, below, and toRightOf. GridLayout divides space into rows and columns, allowing elements to span multiple cells. It provides solutions for alignment issues in nested layouts and improves performance over deeply nested designs.
The document discusses how to implement an ExpandableListView in Android. An ExpandableListView allows displaying data in a two-level nested list, with groups that can expand to show child items. The example uses three classes - MainActivity displays the ExpandableListView, ExpandableListData provides the list data in a hash map, and ExpandableListAdapter links the data to the views. Key methods include getGroupView() and getChildView() to populate the views, and interface methods to handle clicks on groups and children.
This document discusses resources in Android, including string resources and menu resources. Resources are files stored in the res directory that include physical files like images as well as XML files declaring values. String resources can be plain strings, formatted strings, or styled texts defined in XML files. Menu resources define application menus in XML with elements like <menu>, <item>, and <group>. Attributes specify properties of menu items. The menu XML is inflated into a programmable object to use in activities.
The document discusses how to add filtering to a custom ListView in Android. It describes creating a custom adapter class that implements the Filterable interface and overrides the getFilter() method. This returns a private inner class that extends Filter and performs the filtering. The filtering compares the search text to item names in the ListView. When text changes, the filter repopulates the list. This allows users to easily search within a long ListView to find specific items.
Databinding allows binding UI components in layouts to data sources in an Android app. The databinding library automatically generates classes to bind views to data objects. When data changes, bound views are automatically updated. To use databinding, enable it in build.gradle and add binding variables to layout XML. Generated binding classes provide methods to set data and callbacks. Databinding can also be used with RecyclerView by generating item bindings and setting an adapter.
Day 15: Content Provider: Using Contacts APIAhsanul Karim
This document discusses content providers in Android application development. It explains that content providers allow applications to share data by making application data available to other apps. A content provider is a class that implements methods to store and retrieve the type of data it handles. It also describes how to query, modify, and add data to content providers. Examples are provided of querying contact data from the device's contacts content provider and updating contact details by modifying the content provider data.
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In this webinar, participants learned how to utilize Generative AI to streamline operations and elevate member engagement. Amazon Web Service experts provided a customer specific use cases and dived into low/no-code tools that are quick and easy to deploy through Amazon Web Service (AWS.)
How to Fix the Import Error in the Odoo 17Celine George
An import error occurs when a program fails to import a module or library, disrupting its execution. In languages like Python, this issue arises when the specified module cannot be found or accessed, hindering the program's functionality. Resolving import errors is crucial for maintaining smooth software operation and uninterrupted development processes.
Chapter wise All Notes of First year Basic Civil Engineering.pptxDenish Jangid
Chapter wise All Notes of First year Basic Civil Engineering
Syllabus
Chapter-1
Introduction to objective, scope and outcome the subject
Chapter 2
Introduction: Scope and Specialization of Civil Engineering, Role of civil Engineer in Society, Impact of infrastructural development on economy of country.
Chapter 3
Surveying: Object Principles & Types of Surveying; Site Plans, Plans & Maps; Scales & Unit of different Measurements.
Linear Measurements: Instruments used. Linear Measurement by Tape, Ranging out Survey Lines and overcoming Obstructions; Measurements on sloping ground; Tape corrections, conventional symbols. Angular Measurements: Instruments used; Introduction to Compass Surveying, Bearings and Longitude & Latitude of a Line, Introduction to total station.
Levelling: Instrument used Object of levelling, Methods of levelling in brief, and Contour maps.
Chapter 4
Buildings: Selection of site for Buildings, Layout of Building Plan, Types of buildings, Plinth area, carpet area, floor space index, Introduction to building byelaws, concept of sun light & ventilation. Components of Buildings & their functions, Basic concept of R.C.C., Introduction to types of foundation
Chapter 5
Transportation: Introduction to Transportation Engineering; Traffic and Road Safety: Types and Characteristics of Various Modes of Transportation; Various Road Traffic Signs, Causes of Accidents and Road Safety Measures.
Chapter 6
Environmental Engineering: Environmental Pollution, Environmental Acts and Regulations, Functional Concepts of Ecology, Basics of Species, Biodiversity, Ecosystem, Hydrological Cycle; Chemical Cycles: Carbon, Nitrogen & Phosphorus; Energy Flow in Ecosystems.
Water Pollution: Water Quality standards, Introduction to Treatment & Disposal of Waste Water. Reuse and Saving of Water, Rain Water Harvesting. Solid Waste Management: Classification of Solid Waste, Collection, Transportation and Disposal of Solid. Recycling of Solid Waste: Energy Recovery, Sanitary Landfill, On-Site Sanitation. Air & Noise Pollution: Primary and Secondary air pollutants, Harmful effects of Air Pollution, Control of Air Pollution. . Noise Pollution Harmful Effects of noise pollution, control of noise pollution, Global warming & Climate Change, Ozone depletion, Greenhouse effect
Text Books:
1. Palancharmy, Basic Civil Engineering, McGraw Hill publishers.
2. Satheesh Gopi, Basic Civil Engineering, Pearson Publishers.
3. Ketki Rangwala Dalal, Essentials of Civil Engineering, Charotar Publishing House.
4. BCP, Surveying volume 1
it describes the bony anatomy including the femoral head , acetabulum, labrum . also discusses the capsule , ligaments . muscle that act on the hip joint and the range of motion are outlined. factors affecting hip joint stability and weight transmission through the joint are summarized.
ISO/IEC 27001, ISO/IEC 42001, and GDPR: Best Practices for Implementation and...PECB
Denis is a dynamic and results-driven Chief Information Officer (CIO) with a distinguished career spanning information systems analysis and technical project management. With a proven track record of spearheading the design and delivery of cutting-edge Information Management solutions, he has consistently elevated business operations, streamlined reporting functions, and maximized process efficiency.
Certified as an ISO/IEC 27001: Information Security Management Systems (ISMS) Lead Implementer, Data Protection Officer, and Cyber Risks Analyst, Denis brings a heightened focus on data security, privacy, and cyber resilience to every endeavor.
His expertise extends across a diverse spectrum of reporting, database, and web development applications, underpinned by an exceptional grasp of data storage and virtualization technologies. His proficiency in application testing, database administration, and data cleansing ensures seamless execution of complex projects.
What sets Denis apart is his comprehensive understanding of Business and Systems Analysis technologies, honed through involvement in all phases of the Software Development Lifecycle (SDLC). From meticulous requirements gathering to precise analysis, innovative design, rigorous development, thorough testing, and successful implementation, he has consistently delivered exceptional results.
Throughout his career, he has taken on multifaceted roles, from leading technical project management teams to owning solutions that drive operational excellence. His conscientious and proactive approach is unwavering, whether he is working independently or collaboratively within a team. His ability to connect with colleagues on a personal level underscores his commitment to fostering a harmonious and productive workplace environment.
Date: May 29, 2024
Tags: Information Security, ISO/IEC 27001, ISO/IEC 42001, Artificial Intelligence, GDPR
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Find out more about ISO training and certification services
Training: ISO/IEC 27001 Information Security Management System - EN | PECB
ISO/IEC 42001 Artificial Intelligence Management System - EN | PECB
General Data Protection Regulation (GDPR) - Training Courses - EN | PECB
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Strategies for Effective Upskilling is a presentation by Chinwendu Peace in a Your Skill Boost Masterclass organisation by the Excellence Foundation for South Sudan on 08th and 09th June 2024 from 1 PM to 3 PM on each day.
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
हिंदी वर्णमाला पीपीटी, hindi alphabet PPT presentation, hindi varnamala PPT, Hindi Varnamala pdf, हिंदी स्वर, हिंदी व्यंजन, sikhiye hindi varnmala, dr. mulla adam ali, hindi language and literature, hindi alphabet with drawing, hindi alphabet pdf, hindi varnamala for childrens, hindi language, hindi varnamala practice for kids, https://www.drmullaadamali.com
This document provides an overview of wound healing, its functions, stages, mechanisms, factors affecting it, and complications.
A wound is a break in the integrity of the skin or tissues, which may be associated with disruption of the structure and function.
Healing is the body’s response to injury in an attempt to restore normal structure and functions.
Healing can occur in two ways: Regeneration and Repair
There are 4 phases of wound healing: hemostasis, inflammation, proliferation, and remodeling. This document also describes the mechanism of wound healing. Factors that affect healing include infection, uncontrolled diabetes, poor nutrition, age, anemia, the presence of foreign bodies, etc.
Complications of wound healing like infection, hyperpigmentation of scar, contractures, and keloid formation.
Beyond Degrees - Empowering the Workforce in the Context of Skills-First.pptxEduSkills OECD
Iván Bornacelly, Policy Analyst at the OECD Centre for Skills, OECD, presents at the webinar 'Tackling job market gaps with a skills-first approach' on 12 June 2024
How to Make a Field Mandatory in Odoo 17Celine George
In Odoo, making a field required can be done through both Python code and XML views. When you set the required attribute to True in Python code, it makes the field required across all views where it's used. Conversely, when you set the required attribute in XML views, it makes the field required only in the context of that particular view.
2. Android ListView Tutorial
Table of Contents
1. What is Adapter?
2. Building ListView using ArrayAdapter
3. Building ListView using Custom Adapter
3.1. Create your custom row layout
3.2. Writing a custom adapter
3.3. Putting it all together
3.4. Output
4. Customizing ListView
4.1. Change ListView selection colour in Android
5. How to change the divider color in the ListView?
5.1. Changing ListView divider color and height
5.2. Using a drawable for ListView divider
5.3. Changing ListView divider color pragmatically
6. References
This post will walk you through Android ListView Tutorial for building simple and customized ListView using
different Android adapters.
List is one of the most common UI patterns, which is being used extensively to display the collection of data elements
in rows. In android ListView is a view group that displays a list of scrollable items. The list items are automatically
inserted to the list using an Adapter that pulls content from a source such as an array.
1. What is Adapter?
Adapter is basically bridge between UI components and the data source that fill data into UI Component. Adapter is
used to supply the data to like spinner, list view, grid view etc. For example, we can create a list view from xml layout
without data, and using adapter we can supply data sets to list view.
3. If you look at the above images you will certainly get an idea of list view. This kind of customizable list views can be
done using an adapter.
2. Building ListView using ArrayAdapter
This is the simplest way we can create a simple default styled list view from array of elements. To do this there are
three things to concentrate,
1. Find out what data you want to display in list: For our example, I am considered taking a static array of
strings. But for complex scenarios it can be a response from server, or data fetched from database.
2. Declare the list view object in your xml layout: ListView is the user interface element we are using to
represent data to user. So in my example, the layout contains a list view. Make sure you provide an appropriate
id.
3. Now finally, feed the list view with the data sets: For this we use adapters. We can always customize our
adapter, but for to start let’s make it simple. I am using Array adapter class available in android.
Here is how my layout file looks like
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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context=".ListActivity" >
<ListView
android:id="@+id/months_list"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
</ListView>
</LinearLayout>
ListActivity.java
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package com.javatechig.droid.ui;
import android.os.Bundle;
import android.app.Activity;
import android.widget.ArrayAdapter;
import android.widget.ListView;
public class ListActivity extends Activity {
// Initialize the array
String[] monthsArray = { "JAN", "FEB", "MAR", "APR", "MAY", "JUNE",
"JULY",
"AUG", "SEPT", "OCT", "NOV", "DEC" };
// Declare the UI components
private ListView monthsListView;
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private ArrayAdapter arrayAdapter;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_list);
// Initialize the UI components
monthsListView = (ListView) findViewById(R.id.months_list);
// For this moment, you have ListView where you can display a list.
// But how can we put this data set to the list?
// This is where you need an Adapter
// context - The current context.
// resource - The resource ID for a layout file containing a layout
// to use when instantiating views.
// From the third parameter, you plugged the data set to adapter
arrayAdapter = new ArrayAdapter(this,
android.R.layout.simple_list_item_1, monthsArray);
// By using setAdapter method, you plugged the ListView with
adapter
monthsListView.setAdapter(arrayAdapter);
}
}
Output of the above code is
3. Building ListView using Custom Adapter
If you have followed my previous example, then you are ready with a simple list which using ArrayAdapter. Now it’s
the time to create something fancy. In this section of tutorial, you will find steps to customize a list using custom
adapters.
5. In this above example I am displaying a new list items. Below is my NewsItem object
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public class NewsItem {
private String headline;
private String reporterName;
private String date;
public String getHeadline() {
return headline;
}
public void setHeadline(String headline) {
this.headline = headline;
}
public String getReporterName() {
return reporterName;
}
public void setReporterName(String reporterName) {
this.reporterName = reporterName;
}
public String getDate() {
return date;
}
public void setDate(String date) {
this.date = date;
}
@Override
public String toString() {
return "[ headline=" + headline + ", reporter Name=" +
reporterName + " , date=" + date + "]";
}
}
3.1. Create your custom row layout
I have created a simple layout as shown in the image below, which holds news headline, reported name and date.
list_row_layout.xml
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<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:minHeight="50dp"
android:orientation="horizontal"