我必须使用什么方法代替应用程序小部件中的findViewById? [英] what method I must use Instead of findViewById in app widget?
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问题描述
当我使用 findViewById()
时,出现错误.
我应该使用什么方法代替我的应用小部件中的 findViewById()
?
When I use findViewById()
I get an error.
What method should I use, instead of findViewById()
in my app widget?
P.S .:我想做类似的事情:
P.S.: I want to do something like:
Button a = (Button) findViewById(R.id.button);
在我的屏幕小部件中
推荐答案
您无需在Widget中使用findViewById()即可
You don't need a findViewById() in Widget just do this
创建一个静态变量,它将是您的onClick名称标签:
create a static variable, which will be your onClick name tag:
private static final String MyOnClick = "Button OnClick";
将此onClick标记设置为您的视图,如下所示:
Set this onClick tag to your view as below:
RemoteViews views = new RemoteViews(context.getPackageName(), R.layout.activity_main);
views.setTextViewText(R.id.your_button, "Button Name");
views.setOnClickPendingIntent(R.id.your_button, MyOnClick);
获取像波纹管这样的按钮单击侦听器
get Button Click listener like bellow
public void onReceive(Context context, Intent intent) {
if (MyOnClick.equals(intent.getAction())){
//your onClick action is here
}
};
这里总代码
import android.app.PendingIntent;
import android.appwidget.AppWidgetManager;
import android.appwidget.AppWidgetProvider;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.widget.RemoteViews;
public class Widget extends AppWidgetProvider {
private static final String SYNC_CLICKED = "automaticWidgetSyncButtonClick";
@Override
public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) {
RemoteViews remoteViews;
ComponentName watchWidget;
remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget_layout);
watchWidget = new ComponentName(context, Widget.class);
remoteViews.setOnClickPendingIntent(R.id.sync_button, getPendingSelfIntent(context, SYNC_CLICKED));
appWidgetManager.updateAppWidget(watchWidget, remoteViews);
}
@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
super.onReceive(context, intent);
if (SYNC_CLICKED.equals(intent.getAction())) {
AppWidgetManager appWidgetManager = AppWidgetManager.getInstance(context);
RemoteViews remoteViews;
ComponentName watchWidget;
remoteViews = new RemoteViews(context.getPackageName(), R.layout.widget_layout);
watchWidget = new ComponentName(context, Widget.class);
remoteViews.setTextViewText(R.id.sync_button, "TESTING");
appWidgetManager.updateAppWidget(watchWidget, remoteViews);
}
}
protected PendingIntent getPendingSelfIntent(Context context, String action) {
Intent intent = new Intent(context, getClass());
intent.setAction(action);
return PendingIntent.getBroadcast(context, 0, intent, 0);
}
}
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