Question

我知道这是可能的，但我无法找到一种方法来触发主要活动中我的小部件的更新。我可以播放一些普遍意图吗？

Answer 1

如果使用AppWidgetProvider，您可以这样更新：

Intent intent = new Intent(this, MyAppWidgetProvider.class);
intent.setAction(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
// Use an array and EXTRA_APPWIDGET_IDS instead of AppWidgetManager.EXTRA_APPWIDGET_ID,
// since it seems the onUpdate() is only fired on that:
 int[] ids = AppWidgetManager.getInstance(getApplication())
    .getAppWidgetI‌ds(new ComponentName(getApplication(), MyAppWidgetProvider.class));
intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, ids);
sendBroadcast(intent);

Answer 2

这有助于我搜索如何从服务/或操作更新小部件（但可能来自每个上下文）：

Context context = this;
AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
RemoteViews remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget_2x1);
ComponentName thisWidget = new ComponentName(context, MyWidget.class);
remoteViews.setTextViewText(R.id.my_text_view, "myText" + System.currentTimeMillis());
appWidgetManager.updateAppWidget(thisWidget, remoteViews);

Answer 3

因此，要从活动更新窗口小部件，您可以这样做：

Intent intent = new Intent(this, DppWidget.class);
intent.setAction("android.appwidget.action.APPWIDGET_UPDATE");
int ids[] = AppWidgetManager.getInstance(getApplication()).getAppWidgetIds(new ComponentName(getApplication(), DppWidget.class));
intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS,ids);
sendBroadcast(intent);

适合我:)

Answer 4

试试这个：

int[] ids = AppWidgetManager.getInstance(getApplication()).getAppWidgetIds(new ComponentName(getApplication(), MyWidget.class));
        MyWidget myWidget = new MyWidget();
        myWidget.onUpdate(this, AppWidgetManager.getInstance(this),ids);

Answer 5

如果您正在使用使用ListView，GridView或StackView等集合的窗口小部件来更新窗口小部件的项目，请执行以下操作：

Context context = getApplicationContext();
AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
ComponentName thisWidget = new ComponentName(context, StackWidgetProvider.class);
int[] appWidgetIds = appWidgetManager.getAppWidgetIds(thisWidget);
appWidgetManager.notifyAppWidgetViewDataChanged(appWidgetIds, R.id.stack_view);

使用此方法notifyAppWidgetViewDataChanged（），您可以强制窗口小部件项目实时获取任何新数据。

Answer 6

int widgetIDs[] = AppWidgetManager.getInstance(getApplication()).getAppWidgetIds(new ComponentName(getApplication(), WidgetProvider.class));

for (int id : widgetIDs)
    AppWidgetManager.getInstance(getApplication()).notifyAppWidgetViewDataChanged(id, R.id.widget_view);
}

Answer 7

只需获取AppWidgetManager个实例并直接更新即可。或者，如果您使用IntentService进行更新，请致电startService()上的IntentService。 AppWidgetProvider是一种更新应用小部件的方式，但这不是唯一的方法。

Answer 8

如果您试图以编程方式更新无法显式访问YourWidgetProvider.class的窗口小部件，例如从另一个模块或库中，您可以捕获YourWidgetProvider.class.getName（）的输出并创建一个常量：

val WIDGET_CLASS_NAME = "com.example.yourapplication.YourWidgetProvider"

您将可以隐式使用它：

val intent = Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE)
val widgetManager = AppWidgetManager.getInstance(context)
val ids = widgetManager.getAppWidgetIds(ComponentName(context, WIDGET_CLASS_NAME))
AppWidgetManager.getInstance(context).notifyAppWidgetViewDataChanged(ids, android.R.id.list)
intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, ids)
context.sendBroadcast(intent)

Answer 9

我的待办事项列表中的示例：

Intent intent = new Intent(this, TodosAppWidget.class);
intent.setAction(AppWidgetManager.ACTION_APPWIDGET_UPDATE);
int[] ids = AppWidgetManager.getInstance(getApplication()).getAppWidgetIds(new ComponentName(getApplication(), TodosAppWidget.class));
intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, ids);
sendBroadcast(intent);

sendBrodcast(Intent(this, TodosAppWidget::class.java).apply {
  action = AppWidgetManager.ACTION_APPWIDGET_UPDATE
  val ids = AppWidgetManager.getInstance(application).getAppWidgetIds(ComponentName(application, TodosAppWidget::class.java))
  putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, ids)
})

Answer 10

Phaethon在Kotlin接受的解决方案：

    val intent = Intent(this, MyAppWidgetProvider::class.java)
    intent.action = AppWidgetManager.ACTION_APPWIDGET_UPDATE
    val ids = AppWidgetManager.getInstance(application).getAppWidgetIds(ComponentName(getApplicationContext(),MyAppWidgetProvider::class.java!!))
    intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, ids)
    sendBroadcast(intent)

MyAppWidgetProvider派生自AppWidgetProvider：
class MyAppWidgetProvider : AppWidgetProvider() {

Answer 11

作为参考，我必须在一个片段中这样做：

Application app = getActivity().getApplication();
Intent intent = new Intent(context, RQWidget.class);
intent.setAction(AppWidgetManager.ACTION_APPWIDGET_UPDATE);

int[] ids = AppWidgetManager.getInstance(app).getAppWidgetIds(new ComponentName(app, RQWidget.class));
intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, ids);
context.sendBroadcast(intent);

以编程方式从活动/服务/接收器更新小部件

11 个答案: