我正在构建一个应用程序,当调用BroadcastReceiver时,该应用程序显示带有两个选项“Dim”和“Full”的通知。每个按钮都会广播一个动作。
到目前为止,一切皆有可能,对吧?
问题是通知上显示的按钮不会响应点按,但整个通知都会响应(如果我点击图标或文字而不是按钮)。
我有这个函数来构建通知:
private Notification buildReleaseNotification(NotificationManager nManager, Context context) {
Notification.Builder builder = new Builder(context);
builder.addAction(R.drawable.rate_star_big_half_holo_dark, "Dim", buildPendingIntent(context, DIM));
builder.addAction(R.drawable.rate_star_big_on_holo_dark, "Full", buildPendingIntent(context, FULL));
builder.setContentTitle("Car notification");
builder.setContentText("Freed");
builder.setSmallIcon(R.drawable.ic_launcher);
builder.setOngoing(true);
Notification notification = builder.build();
return notification;
}
并在接收广播时调用:
public void onReceive(Context context, Intent intent) {
NotificationManager nManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
Notification noty = null;
noty = buildReleaseNotification(context);
startService(context, RELEASE);
if (noty != null) {
nManager.notify(ChangeLockService.GLOBAL_TAG, ID, noty);
}
}
------编辑
注意到以下函数返回null ...那么,我如何构建一个挂起的意图来执行广播呢?
private PendingIntent buildPendingIntent(Context context, String action) {
Intent i = new Intent(action);
PendingIntent pi = PendingIntent.getBroadcast(context, ID, i, Intent.FLAG_RECEIVER_REPLACE_PENDING);
return pi;
}
答案 0 :(得分:1)
通过
创建意图时PendingIntent pi = PendingIntent.getBroadcast(context, ID, i, Intent.FLAG_RECEIVER_REPLACE_PENDING);
导致它返回null。
根据文档,我理解标志Intent.FLAG_RECEIVER_REPLACE_PENDING
将替换已存在的该按钮的任何待定意图。如果我没有发送标志,那么一切正常:
PendingIntent pi = PendingIntent.getBroadcast(context, ID, i, 0);