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android - 设备方向改变时小部件丢失数据

转载 作者:行者123 更新时间:2023-11-29 21:48:53 25 4
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我开发了一个应用程序,它有小部件,这些都运行良好,但我改变了设备的方向,它显示得很好。但有时当我改变方向数据不显示。任何人都可以帮助我,为什么这个问题有时会发生。 这是代码

 @Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
super.onUpdate(context, appWidgetManager, appWidgetIds);
Logger.d(TAG, "WidgetProvider ENTER onUpdate");
String str = null;
SharedPreferences prefs = context.getSharedPreferences("userInformation", Context.MODE_PRIVATE);
if (prefs != null)
{
str = prefs.getString("ImageURL", "").toString();
}
if (str != null && str != "") {
Logger.d(TAG, "WidgetProvider (Account logined)");

for (int j = 0; j < appWidgetIds.length; j++) {

Intent intent = new Intent(context, WidgetService.class);
intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetIds[j]);
intent.setData(Uri.parse(intent.toUri(Intent.URI_INTENT_SCHEME)));

RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.facedroid_widget_layout);
remoteViews.setRemoteAdapter(appWidgetIds[j], R.id.listTasks, intent);

remoteViews.setViewVisibility(R.id.rl_complete_widget, View.GONE);
// The empty view is displayed when the collection has no items.
// It
// should be a sibling
// of the collection view.

/******** Click Listener for All external items ***********/
// Register an onClickListener
Intent clickIntent = new Intent(context, WidgetProvider.class);

clickIntent.setAction(CLICK_ACTION_FACEDROID_LOGO_BUTTON);
clickIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds[j]);
PendingIntent pendingIntent_facedroid_logo = PendingIntent.getBroadcast(context, 0, clickIntent, PendingIntent.FLAG_UPDATE_CURRENT);
remoteViews.setOnClickPendingIntent(R.id.rl_topManagerBar_logo, pendingIntent_facedroid_logo);

clickIntent.setAction(CLICK_ACTION_COMMENT_BUTTON);
clickIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds[j]);
PendingIntent pendingIntent_commentBtn = PendingIntent.getBroadcast(context, 0, clickIntent, PendingIntent.FLAG_UPDATE_CURRENT);
remoteViews.setOnClickPendingIntent(R.id.commentBtn, pendingIntent_commentBtn);

clickIntent.setAction(CLICK_ACTION_CAMERA_BUTTON);
clickIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds[j]);
PendingIntent pendingIntent_cameraBtn = PendingIntent.getBroadcast(context, 0, clickIntent, PendingIntent.FLAG_UPDATE_CURRENT);
remoteViews.setOnClickPendingIntent(R.id.cameraBtn, pendingIntent_cameraBtn);

clickIntent.setAction(CLICK_ACTION_CHECKIN_BUTTON);
clickIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds[j]);
PendingIntent pendingIntent_checkinBtn = PendingIntent.getBroadcast(context, 0, clickIntent, PendingIntent.FLAG_UPDATE_CURRENT);
remoteViews.setOnClickPendingIntent(R.id.checkinBtn, pendingIntent_checkinBtn);

clickIntent.setAction(CLICK_ACTION_REFRESH_BUTTON);
clickIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds[j]);
PendingIntent pendingIntent_refreshBtn = PendingIntent.getBroadcast(context, 0, clickIntent, PendingIntent.FLAG_UPDATE_CURRENT);
remoteViews.setOnClickPendingIntent(R.id.refreshBtn, pendingIntent_refreshBtn);
/******** Click Listener for All external items ***********/

clickIntent.setAction(CLICK_ACTION_ITEM_CLICK);
clickIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetIds[j]);
intent.setData(Uri.parse(intent.toUri(Intent.URI_INTENT_SCHEME)));
PendingIntent toastPendingIntent = PendingIntent.getBroadcast(context, 0, clickIntent, PendingIntent.FLAG_UPDATE_CURRENT);
remoteViews.setPendingIntentTemplate(R.id.listTasks, toastPendingIntent);

appWidgetManager.updateAppWidget(appWidgetIds[j], remoteViews);
}

} else {
Logger.d(TAG, "WidgetProvider (Account not logined)");

for (int j = 0; j < appWidgetIds.length; j++) {

RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.facedroid_widget_layout);
/******** Click Listener for All external items ***********/
// Register an onClickListener
Intent clickIntent = new Intent(context, WidgetProvider.class);

clickIntent.setAction(CLICK_ACTION_COMPLETE_WIDGET_CLICK);
clickIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, appWidgetIds[j]);
PendingIntent pendingIntent_widget_top_bar = PendingIntent.getBroadcast(context, 0, clickIntent, PendingIntent.FLAG_UPDATE_CURRENT);
remoteViews.setOnClickPendingIntent(R.id.rl_complete_widget, pendingIntent_widget_top_bar);

appWidgetManager.updateAppWidget(appWidgetIds[j], remoteViews);
}
}

Logger.d(TAG, "WidgetProvider EXIT onUpdate");
// super.onUpdate(context, appWidgetManager, appWidgetIds);
}

//这里是Onreceive方法的代码

@Override
public void onReceive(final Context context, Intent main_intent) {

super.onReceive(context, main_intent);
Logger.d(TAG, "WidgetProvider ENTER onReceive");

// all the intents get handled by this method
// mainly used to handle self created intents, which are not
// handled by any other method

// the super call delegates the action to the other methods

// for example the APPWIDGET_UPDATE intent arrives here first
// and the super call executes the onUpdate in this case
// so it is even possible to handle the functionality of the
// other methods here
// or if you don't call super you can overwrite the standard
// flow of intent handling
String str = null;
SharedPreferences prefs = context.getSharedPreferences("userInformation", Context.MODE_PRIVATE);
if (prefs != null) {
str = prefs.getString("ImageURL", "").toString();
}
if (str != null && str != "") {
Logger.d(TAG, "WidgetProvider (Account logined)");

if (main_intent.getAction().equals(AppWidgetManager.ACTION_APPWIDGET_UPDATE)) {
Logger.d(TAG, "WidgetProvider UpdateAction");
String updateType = main_intent.getStringExtra("updateType");
Logger.d(TAG, "updateType=" + updateType);
if (updateType != null) {
if (updateType.equals("single")) {
final int appWidgetId = main_intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, 0);
final AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
updateAppWidgetSingle(context, appWidgetManager, appWidgetId);
} else if (updateType.equals("multiple")) {
final int[] appWidgetIds = (int[]) main_intent.getIntArrayExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS);
final AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
updateAppWidgetMultiple(context, appWidgetManager, appWidgetIds);
}
}
} else if (main_intent.getAction().equals(CLICK_ACTION_ITEM_CLICK)) {
Logger.d(TAG, "WidgetProvider ItemClick");
// int appWidgetId =
// main_intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,
// AppWidgetManager.INVALID_APPWIDGET_ID);
int viewIndex = main_intent.getIntExtra(EXTRA_ITEM, 0);

LinkInfo info_s = null;
try {
info_s = public_feed.DATA.get(viewIndex);
} catch (Exception e) {
e.printStackTrace();
if (e != null) {
Log.e(TAG, "onReceive() " + e.getMessage().toString());
} else {
Log.e(TAG, "onReceive() e=null onReceive");
}
}

if (info_s != null) {
Intent i = new Intent(context.getApplicationContext(), SinglePostActivityWidget.class);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
i.putExtra("LinkInfo", info_s);
context.getApplicationContext().startActivity(i);
}

} else if (main_intent.getAction().equals(CLICK_ACTION_FACEDROID_LOGO_BUTTON)) {
Logger.d(TAG, "WidgetProvider FacedroidLogoButtonClicked");

Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
ComponentName component_name = new ComponentName("com.platinumapps.facedroid", "com.platinumapps.activities.Splash_Activity");
intent.setComponent(component_name);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
if (intent != null) {
context.startActivity(intent);
}

} else if (main_intent.getAction().equals(CLICK_ACTION_COMMENT_BUTTON)) {
Logger.d(TAG, "WidgetProvider CommentButtonClicked");

Intent i = new Intent(context.getApplicationContext(), StatusShareICS.class);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.getApplicationContext().startActivity(i);

} else if (main_intent.getAction().equals(CLICK_ACTION_CAMERA_BUTTON)) {
Logger.d(TAG, "WidgetProvider CameraButtonClicked");

Intent i = new Intent(context.getApplicationContext(), PhotoSharePopup_widget.class);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.getApplicationContext().startActivity(i);

} else if (main_intent.getAction().equals(CLICK_ACTION_CHECKIN_BUTTON)) {
Logger.d(TAG, "WidgetProvider CheckinButtonClicked");

Intent i = new Intent(context.getApplicationContext(), widget_place_checkin_dialog.class);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.getApplicationContext().startActivity(i);

} else if (main_intent.getAction().equals(CLICK_ACTION_REFRESH_BUTTON)) {
Logger.d(TAG, "WidgetProvider RefreshButtonClicked");

refresh_indicator = true;
final int appWidgetId = main_intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, AppWidgetManager.INVALID_APPWIDGET_ID);
final AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);

RemoteViews updateViews = new RemoteViews(context.getPackageName(), R.layout.facedroid_widget_layout);
updateViews.setViewVisibility(R.id.pb_refreshing, View.VISIBLE);
updateViews.setViewVisibility(R.id.refreshBtn, View.INVISIBLE);
appWidgetManager.updateAppWidget(appWidgetId, updateViews);

new Timer().schedule(new TimerTask() {
@Override
public void run() {
RemoteViews updateViews = new RemoteViews(context.getPackageName(), R.layout.facedroid_widget_layout);
updateViews.setViewVisibility(R.id.pb_refreshing, View.GONE);
updateViews.setViewVisibility(R.id.refreshBtn, View.VISIBLE);
appWidgetManager.updateAppWidget(appWidgetId, updateViews);
}
}, 1000 * 10);

Intent intent = new Intent(context, WidgetProvider.class);
intent.setAction(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
intent.putExtra("updateType", "single");
intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
context.sendBroadcast(intent);

} else if (main_intent.getAction().equals(REFRESH_END)) {
Logger.d(TAG, "WidgetProvider RefreshEnd");

if (refresh_indicator) {

int appWidgetId = main_intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, AppWidgetManager.INVALID_APPWIDGET_ID);
AppWidgetManager mgr = AppWidgetManager.getInstance(context);

RemoteViews updateViews = new RemoteViews(context.getPackageName(), R.layout.facedroid_widget_layout);
updateViews.setViewVisibility(R.id.pb_refreshing, View.GONE);
updateViews.setViewVisibility(R.id.refreshBtn, View.VISIBLE);
mgr.updateAppWidget(appWidgetId, updateViews);
refresh_indicator = false;
}

// if (WidgetService.isOrientationChanged) {
// Log.e(TAG, "WidgetService.isOrientationChanged=true");
// WidgetService.isOrientationChanged = false;
// final int appWidgetId =
// main_intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID,
// 0);
// final AppWidgetManager appWidgetManager =
// AppWidgetManager.getInstance(context);
// updateAppWidgetSingle(context, appWidgetManager,
// appWidgetId);
// } else {
// Log.e(TAG, "WidgetService.isOrientationChanged=false");
// }
}

} else {
Logger.d(TAG, "WidgetProvider (Account not logined)");

Toast.makeText(context, "Please login to facedroid", Toast.LENGTH_SHORT).show();

if (main_intent.getAction().equals(CLICK_ACTION_COMPLETE_WIDGET_CLICK)) {
Logger.d(TAG, "WidgetProvider HeaderWidgetClicked");

Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
ComponentName component_name = new ComponentName("com.platinumapps.facedroid", "com.platinumapps.activities.Splash_Activity");
intent.setComponent(component_name);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
if (intent != null) {
context.startActivity(intent);
}

} else if (main_intent.getAction().equals(CLICK_ACTION_WIDGET_CONTAINER_AREA)) {
Logger.d(TAG, "WidgetProvider ContainerWidgetClicked");

Intent intent = new Intent(Intent.ACTION_MAIN);
intent.addCategory(Intent.CATEGORY_LAUNCHER);
ComponentName component_name = new ComponentName("com.platinumapps.facedroid", "com.platinumapps.activities.Splash_Activity");
intent.setComponent(component_name);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
if (intent != null) {
context.startActivity(intent);
}
}
}

String updateType = main_intent.getStringExtra("updateType");
Logger.d(TAG, "updateType=" + updateType);
if (updateType != null) {
if (updateType.equals("single")) {
final int appWidgetId = main_intent.getIntExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, 0);
final AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
updateAppWidgetSingle(context, appWidgetManager, appWidgetId);
} else if (updateType.equals("multiple")) {
final int[] appWidgetIds = (int[]) main_intent.getIntArrayExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS);
final AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
updateAppWidgetMultiple(context, appWidgetManager, appWidgetIds);
}
}

Logger.d(TAG, "WidgetProvider EXIT onReceive");
//super.onReceive(context, main_intent);
}

最佳答案

当您旋转手机时, Activity 会被破坏并重新创建。所以变量被重新初始化。这就是为什么数据不显示的原因。你可以通过阻止 Activity onRotation 的破坏来克服这个问题。要实现这一点,请将其放入您的 list 中:

<activity android:name="FriendPickerActivity"
android:label="@string/app_name"
android:configChanges="orientation"/>

我指向 android:configChanges="orientation"

或者你可以在你的activity中使用onSaveInstanceState()onRestoreInstanceState()

关于android - 设备方向改变时小部件丢失数据,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/14978873/

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