我正在尝试创建一个每分钟更新一次的时钟小部件。
我尝试使用AlarmManager发送更新请求,但我认为这不如使用IntentFilter(Intent.ACTION_TIME_TICK)
小部件加载完美,并使用ACTION_TIME_TICK IntentFilter更新约10分钟左右......但随后只是停止更新。
这是我的AppWidgetProvider类
public class ClockWidget extends AppWidgetProvider
{
private final String TAG = "ClockWidget";
private static SharedPreferences sharedPrefs;
private static SharedPreferences.Editor prefEditor;
private final String SHARED_PREF_NAME = "ClassicBlack_Prefs";
private BroadcastReceiver receiver;
@Override
public void onEnabled(Context context)
{
Log.d(TAG, "onEnabled()");
super.onEnabled(context);
sharedPrefs = context.getSharedPreferences(SHARED_PREF_NAME, 0);
prefEditor = sharedPrefs.edit();
prefEditor.putBoolean("isWatchfaceActive", true).commit();
drawWatch(context);
receiver = new BroadcastReceiver()
{
@Override
public void onReceive(Context ctx, Intent intent)
{
if (intent.getAction().compareTo(Intent.ACTION_TIME_TICK) == 0)
{
drawWatch(ctx);
}
}
};
context.getApplicationContext().registerReceiver(receiver, new IntentFilter(Intent.ACTION_TIME_TICK));
}
@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds)
{
Log.d(TAG, "onUpdate()");
super.onUpdate(context, appWidgetManager, appWidgetIds);
}
@Override
public void onDisabled(Context context)
{
Log.d(TAG, "onDisabled()");
super.onDisabled(context);
sharedPrefs = context.getSharedPreferences(SHARED_PREF_NAME, 0);
prefEditor = sharedPrefs.edit();
prefEditor.putBoolean("isWatchfaceActive", false).commit();
if (receiver != null)
{
context.getApplicationContext().unregisterReceiver(receiver);
}
}
private void drawWatch(Context context)
{
Log.d(TAG, "drawWatch()");
AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context.getApplicationContext());
ComponentName thisWidget = new ComponentName(context, ClockWidget.class);
int[] allWidgetIds = appWidgetManager.getAppWidgetIds(thisWidget);
Log.i("ExampleWidget", "Updating widgets " + Arrays.asList(allWidgetIds));
// Perform this loop procedure for each App Widget that belongs to this provider
for (int i = 0; i < allWidgetIds.length; i++)
{
DrawWatchFace drawWatchFace = new DrawWatchFace(context, null, true, 500);
drawWatchFace.createWatchWidget();
// Get the layout for the App Widget and attach an on-click listener to the button
RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.clock_widget_layout);
views.setImageViewBitmap(R.id.widget_canvas_imageView_small, drawWatchFace.getPalletBitmap());
// Tell the AppWidgetManager to perform an update on the current app widget
appWidgetManager.updateAppWidget(allWidgetIds[i], views);
}
}
}
有什么建议吗?
答案 0 :(得分:3)
您的流程正在终止。这是完全正常的。当您的进程终止时,您的接收器将被销毁,您将不再接收广播。
您无法在清单中注册ACTION_TIME_TICK
,这是处理此问题的典型方式。
我建议您回到AlarmManager
方法。