我有一个小部件类(扩展AppWidgetProvider),它在窗口小部件的布局中只有一个视图(
ImageView).当用户点击窗口小部件时,它会更新并启动没有问题的活动.此外,小部件每30分钟更新一次,并在小部件更新后启动活动.我的问题是：
如何自动更新窗口小部件才能自动更新(不是通过用户点击)？
如何自动更新窗口小部件才能自动更新(不是通过用户点击)？
这是我的代码：
public class Widget extends AppWidgetProvider {
private static final String ACTION_UPDATE = AppWidgetManager.ACTION_APPWIDGET_UPDATE;
@Override
public void onUpdate(Context context,AppWidgetManager appWidgetManager,int[] appWidgetIds) {
ComponentName cn = new ComponentName(context,Widget.class);
appWidgetManager.updateAppWidget(cn,remoteView(context));
}
@Override
public void onReceive(Context context,Intent intent) {
super.onReceive(context,intent);
if (intent.getAction().equalsIgnoreCase(ACTION_UPDATE)) {
ComponentName cn = new ComponentName(context,Widget.class);
AppWidgetManager.getInstance(context).updateAppWidget(cn,remoteView(context));
Intent launch = new Intent(context,Main.class);
PendingIntent pi = PendingIntent.getActivity(context,launch,0);
try {
pi.send();
} catch (CanceledException e) {
e.printStackTrace();
}
}
}
private RemoteViews remoteView(Context ctx) {
ArrayList<Integer> imageId = new ArrayList<Integer>();
for (int i = 1; i <= 30; i++) {
int drawableImageId = ctx.getResources().getIdentifier("image" + i,"drawable",ctx.getPackageName());
imageId.add(drawableImageId);
}
RemoteViews rv = new RemoteViews(ctx.getPackageName(),R.layout.widget);
Calendar todayDate = Calendar.getInstance();
todayDate.setTimeInMillis(System.currentTimeMillis());
Calendar startDate = Calendar.getInstance();
startDate.set(2014,05,15);
int dayDiffer = Helper.getDiffernce(todayDate,startDate);
dayDiffer += 1;
if (dayDiffer >= 1 && dayDiffer <= 30) {
rv.setInt(R.id.img_widget,"setImageResource",imageId.get(dayDiffer - 1));
T(ctx,"in >> " + dayDiffer);
} else if (dayDiffer >= 0) {
T(ctx,"before >> " + dayDiffer);
} else if (dayDiffer <= 31) {
T(ctx,"after >> " + dayDiffer);
}
Intent update = new Intent(ctx,Widget.class);
update.setAction(ACTION_UPDATE);
PendingIntent pi_update = PendingIntent.getBroadcast(ctx,update,0);
rv.setOnClickPendingIntent(R.id.img_widget,pi_update);
return rv;
}
public void T(Context context,String string) {
Toast.makeText(context,string,Toast.LENGTH_SHORT).show();
}
}
解决方法
更改您的“remoteView()”方法中的PendingIntent：
Intent userInput = new Intent(ctx,Widget.class);
userInput.setAction("LAUNCH_MAIN_ACTIVITY"); // use another action!
PendingIntent pi_userInput =
PendingIntent.getBroadcast(ctx,userInput,0);
rv.setOnClickPendingIntent(R.id.img_widget,pi_userInput);
您的新“onReceive()”方法可能如下所示：
@Override
public void onReceive(Context context,intent);
if (intent.getAction().equalsIgnoreCase(ACTION_UPDATE)) {
ComponentName cn = new ComponentName(context,remoteView(context));
}
// the launch will always be executed,// the update only for "ACTION_UPDATE"
Intent launch = new Intent(context,Main.class);
PendingIntent pi = PendingIntent.getActivity(context,0);
try {
pi.send();
} catch (CanceledException e) {
e.printStackTrace();
}
}
希望这可以帮助！
