Question

所以我不知道为什么这段代码不起作用。我想做一个＆＃34;闹钟＆＃34;通知每天会发生一次。只是想说我是android的新手。更改了代码几次但仍无法正常工作。

警报方法也会执行通知，但我得到了这个：-248 /？ D / PowerManagerService：releaseWakeLock flags = 0x1 tag = AlarmManager W / ActivityManager：无法启动服务Intent {flg = 0x4 cmp = com.example.polakken.test / .lol（has extras）}：not found 06-13 00:00 ：00.825 231-267 /？ D / PowerManagerService：acquireWakeLock flags = 0x1 tag = AlarmManager 06-13 00：00：00.825 231-248 /？ D / PowerManagerService：releaseWakeLock flags = 0x1 tag = AlarmManager

我的代码：

public class MainActivity extends ActionBarActivity {

@Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        SharedPreferences preferences = PreferenceManager.getDefaultSharedPreferences(this);
        SharedPreferences.Editor editor = preferences.edit();
        int i = preferences.getInt("numberoflaunches", 1);

        if (i < 2) {
            alarmMethod();
            i++;
            editor.putInt("numberoflaunches", i);
            editor.commit();
        }

        if (savedInstanceState == null) {
            splashMethod();

        }


    }

//...

private void alarmMethod() {
        Intent intentbro = new Intent(this, lol.class);
        AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);

        PendingIntent pendingIntent = PendingIntent.getService(this, 0, intentbro, 0);

        Calendar calendar = Calendar.getInstance();
        calendar.set(Calendar.SECOND, 0);
        calendar.set(Calendar.MINUTE, 0);
        calendar.set(Calendar.HOUR, 0);
        calendar.set(Calendar.AM_PM, Calendar.AM);
        calendar.add(Calendar.DAY_OF_MONTH, 1);

        alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), 1000 * 60 * 60 * 24, pendingIntent);


        Toast.makeText(MainActivity.this, "start alarm", Toast.LENGTH_LONG).show();

    }

//notification class

public class lol extends Activity{

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        NotificationCompat.Builder b = new NotificationCompat.Builder(this);

        Intent intent1 = new Intent(this.getApplicationContext(), MainActivity.class);
        PendingIntent pIntent = PendingIntent.getActivity(this, 1, intent1, 0);

        b.setContentText("lol");
        b.setContentTitle("Default notification");
        b.setSmallIcon(R.drawable.iconography_small_size);
        b.setContentIntent(pIntent);

        NotificationManager notificationManager = (NotificationManager) this.getSystemService(Context.NOTIFICATION_SERVICE);
        notificationManager.notify(1, b.build());

    }
}

Answer 1

您正在使用PendingIntent创建PendingIntent.getService()，但是您正在提供Intent Activity。

因此，要使代码正常工作，您需要使用PendingIntent.getActivity()。（此外，您必须将相应的<activity>标记添加到AndroidManifest.xml。）

但是，这可能不是您想要的：lol Activity唯一做的就是添加通知。您可能希望使用BroadcastReceiver（或者可能是WakefulBroadcastReceiver）。在这种情况下，您需要使用PendingIntent.getBroadcast()而不是getActivity()。

Answer 2

请按照以下步骤操作

1创建一个Activity并将此代码添加到setAlarm（可以是任何名称）

假设您要为24/02 / 15,14：00 PM设置闹钟

@SuppressLint("UseSparseArrays")
public void setAlarms(Long id,String event_date,String event_time,Context context)
{



    Calendar cal=Calendar.getInstance();
    String[] parts=event_date.split("/");

    String Event_date=parts[0];
    String Event_month=parts[1];
    String Event_Year=parts[2];

    String[] parts1=event_time.split(":");

    String Event_HOD=parts1[0];
    String Event_MIN=parts1[1];

    cal.add(Calendar.YEAR, Integer.parseInt(Event_Year)-cal.get(Calendar.YEAR));
    cal.add(Calendar.MONTH, (Integer.parseInt(Event_month)-1)-cal.get(Calendar.MONTH));
    cal.add(Calendar.DAY_OF_MONTH, Integer.parseInt(Event_date)-cal.get(Calendar.DAY_OF_MONTH));
    cal.add(Calendar.HOUR_OF_DAY, Integer.parseInt(Event_HOD)-cal.get(Calendar.HOUR_OF_DAY));
    cal.add(Calendar.MINUTE, Integer.parseInt(Event_MIN)-cal.get(Calendar.MINUTE));
    cal.add(Calendar.SECOND, 0);


    AlarmManager am =(AlarmManager)context.getSystemService(Activity.ALARM_SERVICE);

     //Your BroadcastReceiver which will receive Alarm
    Intent intent = new Intent(context, AlarmReceiver.class);

    //you can use PutExtra() to send additional parameter with Intent

    //PendingIntent to add
    PendingIntent pendingIntent = PendingIntent.getBroadcast(context,
        (int)(long)id, intent, PendingIntent.FLAG_UPDATE_CURRENT);


        am.set(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(),
                pendingIntent);

 Toast.makeText(context, "alarm Set for Know", Toast.LENGTH_LONG).show();
 }

2）内部BroadcastReceiver onReceive（）方法

@Override
public void onReceive(Context context, Intent intent) {

    //Receive parameter and do what you want to do with parameter

    //Using RemoteViews you can Inflate a CustomLayout when user clicks      on Notification when you do not want any CustomLayout for Notification remove it
    RemoteViews contentView1 = new RemoteViews("com.example.new_reminder_book" , R.layout.custom_notification);
     contentView1.setTextViewText(R.id.cn_tv_title, Event_title);
        contentView1.setTextViewText(R.id.cn_tv_category, Event_category);
        contentView1.setImageViewResource(R.id.cn_tv_image, R.drawable.event);


    NotificationCompat.Builder mBuilder=new NotificationCompat.Builder(context)
    .setSmallIcon(R.drawable.appicon)
    .setContent(contentView1)
    .setAutoCancel(true)
    .setOngoing(true);


    //Target Activity that will start when you click on Notification
    Intent result=new Intent(context, EmptyActivity.class);


    // The stack builder object will contain an artificial back stack for the
    // started Activity.
    // This ensures that navigating backward from the Activity leads out of
    // your application to the Home screen.
    TaskStackBuilder stackBuilder = TaskStackBuilder.create(context);
    // Adds the back stack for the Intent (but not the Intent itself)
    stackBuilder.addParentStack(EmptyActivity.class);
    // Adds the Intent that starts the Activity to the top of the stack
    stackBuilder.addNextIntent(result);

    PendingIntent resultPendingIntent =
            stackBuilder.getPendingIntent(
                0,
                PendingIntent.FLAG_UPDATE_CURRENT
            );

    mBuilder.setContentIntent(resultPendingIntent);

    Notification notification=mBuilder.build();
    notification.contentView=contentView1;



    NotificationManager mNotificationManager =
        (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
    // mId allows you to update the notification later on.
    mNotificationManager.notify((int) System.currentTimeMillis(), notification);

    //A mp3 fine in res->raw that will play when notification fire
    MediaPlayer mp = MediaPlayer.create(context, R.raw.listen);
    mp.start();

    PowerManager pm = (PowerManager)     context.getSystemService(Context.POWER_SERVICE);

    PowerManager.WakeLock wl = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, "My Tag");

    wl.acquire();

    /*Vibrator vibrator = (Vibrator) context.getSystemService(Context.VIBRATOR_SERVICE);

     //Set pattern for Vibration
    long[] pattern={2000,3000,4000};

    vibrator.vibrate(pattern,1);*/

    wl.release();


}

}

3）在Manifest.xml中声明两个权限

<uses-permission android:name="android.permission.WAKE_LOCK"/> <uses-permission android:name="android.permission.VIBRATE"/>

4）在Manifest.xml中声明你的AlarmReceiver

<receiver android:name=".extra.AlarmReceiver" android:label="@string/title_activity_alarm_receiver" android:exported="true"> </receiver>

请遵循这些文件 http://developer.android.com/reference/android/content/BroadcastReceiver.html
        http://developer.android.com/reference/android/app/AlarmManager.html
       http://developer.android.com/guide/topics/ui/notifiers/notifications.html
         http://developer.android.com/reference/android/os/PowerManager.WakeLock.html

希望这会对你有所帮助

报警通知，通知不会弹出

2 个答案: