Question

我正在开发AppWidget：

可以调整大小并处理：

onAppWidgetOptionsChanged

应按用户选择的时间间隔进行更新并处理：

onReceive

我的小部件有三种不同小部件大小的布局。问题是当我调整窗口小部件并调用onReceive时，窗口小部件总是会获得初始视图。例如，小部件初始布局是4x1，而BroadCastReceiver的onReceive被调用，一切正常。当我在调用onReceive后将窗口小部件的大小调整为4x2时，窗口小部件的大小再次为4x1。有人知道为什么吗？

以下是我的代码中的一些代码：

我有三个小部件布局：widget_layout.xml，widget_layout_1.xml，widget_layout_2.xml
以下是关于我的小部件的配置：

<appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android" android:initialLayout="@layout/widget_layout" android:minHeight="40dip" android:minWidth="390dip" android:resizeMode="vertical" android:configure="com.test.ConfigurationDummy" > </appwidget-provider>
以下是我的小部件提供商的代码：

 public class WidgetProvider extends AppWidgetProvider {
 private AppWidgetManager appWidgetManager;
 int [] appWidgetIds;

@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
    Toast.makeText(context, "onUpdate():update widget instance ", Toast.LENGTH_SHORT).show();
    this.appWidgetManager=appWidgetManager;
    this.appWidgetIds= Arrays.copyOf(appWidgetIds,appWidgetIds.length);
    RemoteViews updateViews = new RemoteViews(context.getPackageName(),
            R.layout.widget_layout);
    // do some with the view 
    appWidgetManager.updateAppWidget(appWidgetIds, updateViews);
    super.onUpdate(context, appWidgetManager, appWidgetIds);
}

@Override
public void onDeleted(Context context, int[] appWidgetIds) {
    Toast.makeText(context, "TimeWidgetRemoved id(s):" + appWidgetIds, Toast.LENGTH_SHORT).show();
    super.onDeleted(context, appWidgetIds);
    }

    @Override
    public void onDisabled (Context context){
        Toast.makeText(context, "onDisabled():last widget instance removed", Toast.LENGTH_SHORT).show();
    Intent intent = new Intent(context, AlarmManagerBroadcastReceiver.class);
    PendingIntent sender = PendingIntent.getBroadcast(context, 0, intent, 0);
    AlarmManager alarmManager = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
    alarmManager.cancel(sender);
    super.onDisabled(context);
}

/**
 * this is called when first widget is created
 *
 * @param context
 */
@Override
public void onEnabled(Context context) {
    Toast.makeText(context, "onEnabled id(s):" , Toast.LENGTH_SHORT).show();
    super.onEnabled(context);

    //TODO this should be read from StoreUtils class
    SharedPreferences prefs = context.getSharedPreferences("AsebaSave", Activity.MODE_PRIVATE);
    prefs.edit().putLong("refreshTime", 500).apply();
    //TODO cards should be read from StoreUtils class

    AlarmManager am = (AlarmManager) context.getSystemService(Context.ALARM_SERVICE);
    Intent intent = new Intent(context, AlarmManagerBroadcastReceiver.class);
    PendingIntent pi = PendingIntent.getBroadcast(context, 0, intent, 0);
    am.setRepeating(AlarmManager.RTC_WAKEUP, prefs.getLong("refreshTime", 500), prefs.getLong("refreshTime", 500), pi);
}

@TargetApi(16)
@Override
public void onAppWidgetOptionsChanged(Context context, AppWidgetManager appWidgetManager, int appWidgetId, Bundle newOptions) {
    Toast.makeText(context, " onAppWidgetOptionsChanged" + appWidgetId, Toast.LENGTH_SHORT).show();
    Bundle options = appWidgetManager.getAppWidgetOptions(appWidgetId);
    int minWidth = options.getInt(AppWidgetManager.OPTION_APPWIDGET_MIN_WIDTH);
    int minHeight = options.getInt(AppWidgetManager.OPTION_APPWIDGET_MIN_HEIGHT);

    appWidgetManager.updateAppWidget(appWidgetId, getRemoteViews(appWidgetManager,context, minWidth, minHeight, appWidgetId));
    super.onAppWidgetOptionsChanged(context, appWidgetManager, appWidgetId, newOptions);
}

private RemoteViews getRemoteViews(AppWidgetManager appWidgetManager,Context context, int minWidth, int minHeight, int appWidgetId) {
    int rows = getCellsForSize(minHeight);
    RemoteViews updateViews;
    switch (rows) {
        case 1:
            Toast.makeText(context, "case 1: ", Toast.LENGTH_SHORT).show();
            updateViews = new RemoteViews(context.getPackageName(),
                    R.layout.widget_layout_1);
            Intent svcIntent = new Intent(context, WidgetProvider.class);
            svcIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
            return updateViews;
        case 2:
             updateViews = new RemoteViews(context.getPackageName(),
                    R.layout.widget_layout_2);
            Toast.makeText(context, "case 2: ", Toast.LENGTH_SHORT).show();
            Intent svcIntent1 = new Intent(context, WidgetProvider.class);
            svcIntent1.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
            return updateViews;
        default:
            updateViews = new RemoteViews(context.getPackageName(),
                    R.layout.widget_layout);
            Toast.makeText(context, "case 3: ", Toast.LENGTH_SHORT).show();
            Intent svcIntent2 = new Intent(context, WidgetProvider.class);
            svcIntent2.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
            return updateViews;
    }
}


private static int getCellsForSize(int size) {
    int n = 2;
    while (70 * n - 30 < size) {
        ++n;
    }
    return n - 1;
}

public Card getCard(Context context, String key){
    SharedPreferences settings;
    settings = context.getSharedPreferences(ConfigurationDummy.preferencesFile,
            Context.MODE_PRIVATE);
    if (settings.contains(key)) {
        Gson gson = new Gson();
        String json = settings.getString(key, "");
        Card obj = gson.fromJson(json, Card.class);
        return obj;
    } else
        return null;
}

}`

以下是我的BroadCastReceiver的代码：

  public class AlarmManagerBroadcastReceiver extends BroadcastReceiver{
    @Override
    public void onReceive(Context context, Intent intent) {
    Toast.makeText(context, "onReceive():update widget instance ", Toast.LENGTH_SHORT).show();
    PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
    PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "UPDATE_DONUT");
    //Acquire the lock
    wl.acquire();
    //You can do the processing here update the widget/remote views.
    AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
    int mAppWidgetId = AppWidgetManager.INVALID_APPWIDGET_ID;
    Intent intent1=new Intent(context,WidgetProvider.class);
    Bundle extras = intent1.getExtras();
    if (extras != null) {
        Toast.makeText(context, "if (extras != null) { ", Toast.LENGTH_SHORT).show();
        mAppWidgetId = extras.getInt(
                AppWidgetManager.EXTRA_APPWIDGET_ID);
        Toast.makeText(context, "Widget ID "+mAppWidgetId, Toast.LENGTH_SHORT).show();
    }
    Bundle options=appWidgetManager.getAppWidgetOptions(mAppWidgetId);
    int minWidth = options.getInt(AppWidgetManager.OPTION_APPWIDGET_MIN_HEIGHT);
    int rows=getCellsForSize(minWidth);
    RemoteViews remoteViews;
    switch (rows) {
        case 1:
            Toast.makeText(context, "onReceive():remoteView 1 ", Toast.LENGTH_SHORT).show();
            remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget_layout_1);
            break;
        case 2:
            Toast.makeText(context, "onReceive():remoteView 2 ", Toast.LENGTH_SHORT).show();
            remoteViews = new RemoteViews(context.getPackageName(),R.layout.widget_layout_2);
            break;
        case 3:
            Toast.makeText(context, "onReceive():remoteView 3 ", Toast.LENGTH_SHORT).show();
            remoteViews=new RemoteViews(context.getPackageName(),R.layout.widget_layout);
            break;
        default:
            Toast.makeText(context, "onReceive():remoteView default ", Toast.LENGTH_SHORT).show();
            remoteViews=new RemoteViews(context.getPackageName(),R.layout.widget_layout);
    }
    new AsyncTaskRandom(remoteViews,context,rows).execute();
    //Release the lock
    wl.release();
}
//TODO This AsyncTask should call account balance
private class AsyncTaskRandom extends AsyncTask<Void, Void,Void > {
    private RemoteViews remoteViews;
    private int rows;
    private Context context;
    int mAppWidgetId = AppWidgetManager.INVALID_APPWIDGET_ID;
    public AsyncTaskRandom(RemoteViews remoteViews,Context context,int rows){
        this.remoteViews=remoteViews;
        this.context=context;
        this.rows=rows;
    }
    @Override
    protected Void doInBackground(Void... voids) {
        try {
            Thread.currentThread();
            Thread.sleep(5000);
        } catch (InterruptedException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
        return null;
    }
    @Override
    protected void onPreExecute() {
        super.onPreExecute();
    }
    @Override
    protected void onPostExecute(Void aVoid) {
        super.onPostExecute(aVoid);
        Random rand = new Random();
        switch (rows) {
            case 1:
            // do something with layout
            case 2:
            // do something with layout
            case 3:
            // do something with layout
            default:
            // do something with layout
        }
        ComponentName thiswidget = new ComponentName(context, WidgetProvider.class);
        AppWidgetManager manager = AppWidgetManager.getInstance(context);
        manager.updateAppWidget(thiswidget, remoteViews);
    }
}
private static int getCellsForSize(int size) {
    int n = 2;
    while (70 * n - 30 < size) {
        ++n;
    }
    return n - 1;
}
public Card getCard(Context context, String key){
    SharedPreferences settings;
    settings = context.getSharedPreferences(ConfigurationDummy.preferencesFile,
            Context.MODE_PRIVATE);
    if (settings.contains(key)) {
        Gson gson = new Gson();
        String json = settings.getString(key, "");
        Card obj = gson.fromJson(json, Card.class);
        return obj;
    } else
        return null;
}

}

当我尝试这个时：

  Intent intent1=new Intent(context,WidgetProvider.class);
    Bundle extras = intent1.getExtras();
    if (extras != null) {
        Toast.makeText(context, "if (extras != null) { ", Toast.LENGTH_SHORT).show();
        mAppWidgetId = extras.getInt(
                AppWidgetManager.EXTRA_APPWIDGET_ID);
        Toast.makeText(context, "Widget ID "+mAppWidgetId, Toast.LENGTH_SHORT).show();
    }

mAppWidgetId为0。在这段代码中

Bundle options = appWidgetManager.getAppWidgetOptions（mAppWidgetId）; int minWidth = options.getInt（AppWidgetManager.OPTION_APPWIDGET_MIN_HEIGHT）;

选项为null，minWidth = 0。

我不知道为什么？

广播接收器将android AppWidget布局返回到初始大小，而不是调整大小

0 个答案: