Android AppWidget更新列表视图
Android上的Appwidget有问题。我有一个列表视图和一个按钮,小部件的更新周期设置为30分钟。 现在我想在单击按钮时更新listView。我在互联网上搜索过这个问题,但没有找到解决问题的答案。 在我的代码中,我必须在onReceived()方法中编写什么来更新小部件 我的代码:Android AppWidget更新列表视图,android,listview,android-appwidget,Android,Listview,Android Appwidget,Android上的Appwidget有问题。我有一个列表视图和一个按钮,小部件的更新周期设置为30分钟。 现在我想在单击按钮时更新listView。我在互联网上搜索过这个问题,但没有找到解决问题的答案。 在我的代码中,我必须在onReceived()方法中编写什么来更新小部件 我的代码: public class WidgetProvider extends AppWidgetProvider { private static final String ACTION_UPDATE_CLICK
public class WidgetProvider extends AppWidgetProvider {
private static final String ACTION_UPDATE_CLICK = "click";
private Date date;
@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager,
int[] appWidgetIds) {
final int N = appWidgetIds.length;
for (int i = 0; i < N; ++i) {
RemoteViews remoteViews = updateWidgetListView(context,
appWidgetIds[i]);
appWidgetManager.updateAppWidget(appWidgetIds[i], remoteViews);
remoteViews.setOnClickPendingIntent(R.id.bMorgenWidget,
getPendingSelfIntent(context,
ACTION_UPDATE_CLICK));
}
super.onUpdate(context, appWidgetManager, appWidgetIds);
}
private PendingIntent getPendingSelfIntent(Context context, String action) {
Intent intent = new Intent(context, getClass());
intent.setAction(action);
return PendingIntent.getBroadcast(context, 0, intent, 0);
}
@Override
public void onReceive(Context context, Intent intent) {
super.onReceive(context, intent);
if (ACTION_UPDATE_CLICK.equals(intent.getAction())) {
}
}
private RemoteViews updateWidgetListView(Context context, int appWidgetId) {
RemoteViews remoteViews = new RemoteViews(context.getPackageName(),
R.layout.widget_layout);
Intent svcIntent = new Intent(context, WidgetService.class);
svcIntent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_ID, appWidgetId);
svcIntent.setData(Uri.parse(svcIntent.toUri(Intent.URI_INTENT_SCHEME)));
remoteViews.setRemoteAdapter(appWidgetId, R.id.listViewWidget,
svcIntent);
remoteViews.setEmptyView(R.id.listViewWidget, R.id.empty_view);
return remoteViews;
}
}
公共类WidgetProvider扩展了AppWidgetProvider{
私有静态最终字符串操作\u更新\u单击=“单击”;
私人日期;
@凌驾
public void onUpdate(上下文上下文,AppWidgetManager AppWidgetManager,
int[]appWidgetIds){
final int N=appWidgetIds.length;
对于(int i=0;i
我也面临同样的问题。我想知道如何强制更新我的小部件中的数据和ui
我找到的解决方案是使用公共静态内部服务:
/**
* Update Big Widget Service
*/
public static class WidgetBigUpdateService extends Service
{
public WidgetBigUpdateService()
{
super();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId)
{
Context context = getBaseContext();
AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
int[] appWidgetIds = appWidgetManager.getAppWidgetIds(new ComponentName(context, this.getClass()));
RemoteViews bigWidgetView = new RemoteViews(context.getPackageName(), R.layout.widget_big_layout);
refreshBigWidgetData(context, appWidgetManager, appWidgetIds, bigWidgetView);
return super.onStartCommand(intent, flags, startId);
}
@Override
public IBinder onBind(Intent intent)
{
return null;
}
}
方法
refreshBigWidgetData(上下文、appWidgetManager、AppWidgetId、bigWidgetView)代码>
属于小部件并负责我的小部件的UI更新:
/**
* Asks for Big Widget Updates
*
* @param context
*/
private void widgetBigForceUpdate(Context context)
{
AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
int[] appWidgetIds = appWidgetManager.getAppWidgetIds(new ComponentName(context, this.getClass()));
onUpdate(context, appWidgetManager, appWidgetIds);
}
如您所见,它使用上下文、appWidgetManager和appWidgetId调用函数onUpdate()。这个代码是100%工作,我毫不怀疑你可以适应你的具体用途
希望这有帮助我也遇到了同样的问题。我想知道如何强制更新我的小部件中的数据和ui
我找到的解决方案是使用公共静态内部服务:
/**
* Update Big Widget Service
*/
public static class WidgetBigUpdateService extends Service
{
public WidgetBigUpdateService()
{
super();
}
@Override
public int onStartCommand(Intent intent, int flags, int startId)
{
Context context = getBaseContext();
AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
int[] appWidgetIds = appWidgetManager.getAppWidgetIds(new ComponentName(context, this.getClass()));
RemoteViews bigWidgetView = new RemoteViews(context.getPackageName(), R.layout.widget_big_layout);
refreshBigWidgetData(context, appWidgetManager, appWidgetIds, bigWidgetView);
return super.onStartCommand(intent, flags, startId);
}
@Override
public IBinder onBind(Intent intent)
{
return null;
}
}
方法
refreshBigWidgetData(上下文、appWidgetManager、AppWidgetId、bigWidgetView)代码>
属于小部件并负责我的小部件的UI更新:
/**
* Asks for Big Widget Updates
*
* @param context
*/
private void widgetBigForceUpdate(Context context)
{
AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
int[] appWidgetIds = appWidgetManager.getAppWidgetIds(new ComponentName(context, this.getClass()));
onUpdate(context, appWidgetManager, appWidgetIds);
}
如您所见,它使用上下文、appWidgetManager和appWidgetId调用函数onUpdate()。这个代码是100%工作,我毫不怀疑你可以适应你的具体用途
希望这有帮助