DroidKaigi

8. あんざいゆき, @yanzm, uPhyca Inc.

11. 開発規模
成熟度
2008 2015

12. 開発規模
成熟度
2008 2015
コンタクトアプリのJavaファイル数
2.3

13. 開発規模
成熟度
2008 2015
Tablet

14. 開発規模
成熟度
2008 2015
コンタクトアプリのJavaファイル数
4.0.1
2.3
Tablet

15. 開発規模
成熟度
2008 2015
Material
Design
Tablet

16. 開発規模
成熟度
2008 2015
Tablet
コンタクトアプリのJavaファイル数
4.0.1
2.3
5.0.1
Material
Design

30. Activity Fragment CustomView
テーマ ⚪ △
Windowを
作成
⚪
他の画面から
呼び出せる
⚪
ライフサイクル
のハンドリング
⚪ ⚪ △

31. Activity Fragment CustomView
1画面に複数 ⚪ ⚪
Orientation
指定
⚪
Fragmentを
持てる
⚪
画面回転の前後
でインスタンス
を保持
⚪

32. Activity Fragment CustomView
描画 ⚪
KeyEvent ⚪ ⚪
バックキー ⚪ ⚪
BackStack ⚪ ⚪

33. Activity Fragment CustomView
Options
Menu
⚪ ⚪
Loader ⚪ ⚪
状態の
リストア
⚪ ⚪ △
テスト
しやすさ
⚪

34. Activity Fragment CustomView
ActionBar
カスタマイズ
⚪ △

46. • ImageView
• EditText
• Spinner
• RadioButton
• pick list

54. private static final String KEY_DESSERT_LIST = "dessert_list";
@Override
protected void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
ArrayList<String> dessertList = new ArrayList<>();
…
outState.putStringArrayList(KEY_DESSERT_LIST,
dessertList);
}
@Override
protected void onRestoreInstanceState(Bundle
savedInstanceState) {
super.onRestoreInstanceState(savedInstanceState);
ArrayList<String> dessertList = savedInstanceState
.getStringArrayList(KEY_DESSERT_LIST);
…
}

55. CompoundButtonのコードがわかりやすい

57. static class SavedState extends BaseSavedState {
ArrayList<String> favoriteDessert;
SavedState(Parcelable superState) {
super(superState);
}
private SavedState(Parcel in) {
super(in);
favoriteDessert = in.readArrayList(String.class.getClassL
}
@Override
public void writeToParcel(@NonNull Parcel out, int flags) {
super.writeToParcel(out, flags);
out.writeStringList(favoriteDessert);
}
…
}

58. @Override
public Parcelable onSaveInstanceState() {
Parcelable superState = super.onSaveInstanceState();
SavedState ss = new SavedState(superState);
ss.favoriteDessert = getFavoriteDesserts();
return ss;
}
@Override
public void onRestoreInstanceState(Parcelable state) {
SavedState ss = (SavedState) state;
super.onRestoreInstanceState(ss.getSuperState());
setFavoriteDesserts(ss.favoriteDessert);
requestLayout();
}

60. static class SavedState extends BaseSavedState {
String imageUrl;
String uriString;
SavedState(Parcelable superState) {
super(superState);
}
private SavedState(Parcel in) {
super(in);
imageUrl = in.readString();
uriString = in.readString();
}
@Override
public void writeToParcel(@NonNull Parcel out, int flags) {
super.writeToParcel(out, flags);
out.writeString(imageUrl);
out.writeString(uriString);
}
…
}

61. @Override
public Parcelable onSaveInstanceState() {
Parcelable superState = super.onSaveInstanceState();
SavedState ss = new SavedState(superState);
ss.imageUrl = imageUrl;
if (localImageUri != null) {
ss.uriString = localImageUri.toString();
}
return ss;
}
@Override
public void onRestoreInstanceState(Parcelable state) {
SavedState ss = (SavedState) state;
super.onRestoreInstanceState(ss.getSuperState());
if (!TextUtils.isEmpty(ss.uriString)) {
setImageFromUriString(ss.uriString);
} else if (!TextUtils.isEmpty(ss.imageUrl)) {
setImageUrl(ss.imageUrl);
}
requestLayout();
}

63. final int id = eventGroup.getCheckedRadioButtonId();
switch (id) {
case R.id.attend:
profileData.eventStatus = ProfileData.EVENT_STATUS_ATTEN
break;
case R.id.not_attend:
profileData.eventStatus = ProfileData.EVENT_STATUS_NOT_A
break;
case R.id.unknown:
profileData.eventStatus = ProfileData.EVENT_STATUS_UNKNO
break;
default:
return;
}

65. @Retention(RetentionPolicy.SOURCE)
@IntDef({EVENT_STATUS_UNDEFINED, EVENT_STATUS_ATTEND,
EVENT_STATUS_NOT_ATTEND, EVENT_STATUS_UNKNOWN})
public @interface EventStatus {
}
@EventStatus
public int getEventStatus() {
final int id = getCheckedRadioButtonId();
switch (id) {
case R.id.attend:
return EVENT_STATUS_ATTEND;
case R.id.not_attend:
return EVENT_STATUS_NOT_ATTEND;
case R.id.unknown:
return EVENT_STATUS_UNKNOWN;
default:
return EVENT_STATUS_UNDEFINED;
}
}

68. private boolean validate() {
// バリデーション失敗: エラーメッセージ表示
final String name = nameEditText.getText().toString();
if (TextUtils.isEmpty(name)) {
Toast.makeText(MainActivity.this,
"名前が入力されていません", Toast.LENGTH_SHORT).show(
return false;
}
if (eventStatusPicker.getEventStatus() ==
EventStatusPicker.EVENT_STATUS_UNDEFINED) {
Toast.makeText(MainActivity.this,
"DroidKaigiが選択されていません", Toast.LENGTH_SHORT
return false;
}
return true;
}