我从早上起就一直在寻找这个,并提到了stackoverflow上的大多数android报警问题。
我正在尝试使用不同的意图设置多个警报。收到警报后,我希望取消警报并将活动放在前面,以防它已经运行,或者如果它已被杀死则再次启动,但这次警报不应该再次设置。我不希望其他警报生效。 目前,问题是单击通知会再次启动活动并重置警报。如果我尝试使用alarmmanager.cancel取消它,它根本不会通知用户。 这是我的代码,请帮忙
我的MainActivity设置多个警报
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Calendar cal = Calendar.getInstance(); //for using this you need to import java.util.Calendar;
// add minutes to the calendar object
cal.set(Calendar.DAY_OF_WEEK,Calendar.MONDAY);
cal.set(Calendar.HOUR_OF_DAY, 22);
cal.set(Calendar.MINUTE, 8);
// cal.add(Calendar.MINUTE, 1);
AlarmManager mgrAlarm = (AlarmManager) this.getSystemService(ALARM_SERVICE);
ArrayList<PendingIntent> intentArray = new ArrayList<PendingIntent>();
for(int i = 0; i < 10; ++i)
{
Intent intent = new Intent(this, AlarmReceiver.class);
intent.putExtra("title", "notification no."+String.valueOf(i));
intent.putExtra("NOTIFICATION_ID", String.valueOf(i));
// Loop counter `i` is used as a `requestCode`
PendingIntent pendingIntent = PendingIntent.getBroadcast(this, i, intent, 0);
// Single alarms in 1, 2, ..., 10 minutes (in `i` minutes)
mgrAlarm.set(AlarmManager.ELAPSED_REALTIME_WAKEUP,
SystemClock.elapsedRealtime() + 60000 * i,
pendingIntent);
intentArray.add(pendingIntent);
}
}
我的AlarmReceiver类
public class AlarmReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
NotificationManager manger = (NotificationManager)context.getSystemService(Context.NOTIFICATION_SERVICE);
Notification notification = new Notification(R.drawable.ic_launcher, "Alarm App", System.currentTimeMillis());
Bundle extras=intent.getExtras();
String title=extras.getString("title");
int notif_id=Integer.parseInt(extras.getString("NOTIFICATION_ID"));
//here we get the title and description of our Notification
Class myclass = MainActivity.class;
PendingIntent contentIntent = PendingIntent.getActivity(context, notif_id,
new Intent(context, MainActivity.class), 0);
String note=extras.getString("note");
notification.setLatestEventInfo(context, note, title, contentIntent);
notification.flags = Notification.FLAG_INSISTENT;
notification.defaults |= Notification.DEFAULT_SOUND;
//here we set the default sound for our
//notification
// The PendingIntent to launch our activity if the user selects this notification
manger.notify(notif_id, notification);
}
};
答案 0 :(得分:0)
在MainActivity中,您可以使用intent中的其他参数来区分启动和通知。您无论如何都需要通知ID来取消特定通知。因此,您可以在MainActivity中尝试以下操作
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Intent appIntent = this.getIntent();
int notif_id = appIntent.getIntExtra( "my_notification_id", -1 ) ;
if( notif_id != -1 )
{
Log.d ( "LOG_TAG", "Launched from Notification ");
NotificationManager nm = (NotificationManager) getSystemService( NOTIFICATION_SERVICE );
nm.cancel( notif_id );
/* Do the separate processing here */
.....
}
else
{
/* Your previous onCreate code goes here */
在AlarmReceiver.java文件中,您需要进行以下更改
//PendingIntent contentIntent = PendingIntent.getActivity(context, notif_id, new Intent(context, MainActivity.class), 0);
Intent appIntent = new Intent( context, MainActivity.class );
appIntent.putExtra( "my_notification_id", notif_id );
PendingIntent contentIntent = PendingIntent.getActivity(context, notif_id, appIntent, 0);
希望这有帮助。