This document discusses various tips and third party libraries for Android development. It covers using the ActionBar, navigation drawers, JSON parsing, and dimensions for tablets. It provides code examples for implementing an ActionBar for pre-Honeycomb devices using ActionBarSherlock, creating navigation drawers with DrawerLayout, parsing JSON using Gson, and defining dimension resources for different screen sizes and densities.

1. Tips & Third Party
Library for Android
OLEH IBNU SINA WARDY

2. Overview
Action Bar
Sliding Menu
JSON Parsing
Tablet Dimension
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3. Action Bar
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4. Action Bar
ICS Froyo
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5. Action Bar
ICS Froyo
getActionBar().setDisplayHomeAsUpEnabled(true);
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6. Action Bar
ICS Froyo
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
Library agar ActionBar tetap ada
untuk device di bawah Honeycomb:
ActionBarSherlock
http://actionbarsherlock.com
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7. Cara Pakai
ActionBarSherlock
Import Project di Eclipse dan tambahkan sebagai library untuk aplikasi
Gunakan extend milik library
◦ Activity  SherlockActivity
◦ Fragment  SherlockFragment
◦ FragmentActivity  SherlockFragmentActivity
◦ ListAcitivity  SherlockListAcitivity
Untuk mengakses Action Bar, gunakan getSupportActionBar()
Pastikan gunakan class milik ActionBarSherlock
◦ com.actionbarsherlock.app.ActionBar
◦ com.actionbarsherlock.view.Menu
◦ com.actionbarsherlock.view.MenuItem
◦ com.actionbarsherlock.view.MenuInflater
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8. Sliding Menu
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9. Navigation Drawer
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10. Membuat Drawer Layout
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11. Membuat Aksi Buka / Tutup
DrawerLayout mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
R.drawable.ic_drawer, R.string.drawer_open, R.string.drawer_close) {
/** Called when a drawer has settled in a completely closed state. */
public void onDrawerClosed(View view) {
getActionBar().setTitle(mTitle);
invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
}
/** Called when a drawer has settled in a completely open state. */
public void onDrawerOpened(View drawerView) {
getActionBar().setTitle(mDrawerTitle);
invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
}
};
// Set the drawer toggle as the DrawerListener
mDrawerLayout.setDrawerListener(mDrawerToggle);
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12. Buka / Tutup dengan icon
up
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerToggle = new ActionBarDrawerToggle(
this, /* host Activity */
mDrawerLayout, /* DrawerLayout object */
R.drawable.ic_drawer, /* nav drawer icon to replace 'Up' caret */
R.string.drawer_open, /* "open drawer" description */
R.string.drawer_close /* "close drawer" description */
) {
/** Called when a drawer has settled in a completely closed state. */
public void onDrawerClosed(View view) {
getActionBar().setTitle(mTitle);
}
/** Called when a drawer has settled in a completely open state. */
public void onDrawerOpened(View drawerView) {
getActionBar().setTitle(mDrawerTitle);
}
};
// Set the drawer toggle as the DrawerListener
mDrawerLayout.setDrawerListener(mDrawerToggle);
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
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13. Library SlidingMenu
Url: https://github.com/jfeinstein10/SlidingMenu
Lebih mudah diimplementasikan
Dapat membuat sliding menu di kiri dan di kanan
Tetapi:
◦ Tidak mempunyai icon garis tiga di actionbar
◦ Menu tidak floating di atas konten
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14. Penggunakan SlidingMenu
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15. JSON Parsing
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16. JSON
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17. Basic Parsing
JSONObject jObj = new JSONObject(strFromUrl);
int id = jObj.getInt("id");
String name = jObj.getString("name");
String address = jObj.getString("address");
String contact = jObj.getString("contact");
//.... dan seterusnya
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18. Gson
Unduh library Gson
◦ https://code.google.com/p/google-gson/
Ekstrak hasil unduh dan letakkan library jar ke folder libs di project
Buat kelas model yang mempresentasikan json yang akan diparsing
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19. Contoh kelas model
public class RestaurantDao {
String id;
String name;
String address;
String contact;
String links;
String about;
String lat;
String lng;
String currency;
String minprice;
String maxprice;
//.... dan seterusnya
}
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20. Parsing menggunakan
Gson
Gson gson = new Gson();
RestaurantDao restaurant = gson.fromJson(strFromUrl,
RestaurantDao.class);
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21. Tablet
Dimension
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22. Dimension for Tablet
Nexus S Galaxy Tab 10.1
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23. dimens.xml
/values/dimens.xml
/values-sw600dp/dimens.xml
<resources>
<dimen name=“text_14sp”>14sp</dimen>
<dimen name=“dimen_10dp”>10dp</dimen>
</resources>
<resources>
<dimen name=“text_14sp”>24sp</dimen>
<dimen name=“dimen_10dp”>20dp</dimen>
</resources>
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24. Dimension compatibility
Nexus S Galaxy Tab 10.1
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26. Work with Us - PT GITS Indonesia
Jalan Jatimulya 1 No 14, Bandung
Jalan Rembang No 17, Menteng, Jakarta Pusat
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