PendingIntent null当试图从类中调用它

Im bulding一个闹钟，我得到一个pendingIntent，应该使闹钟暂停。当它在活动中时，相同的代码工作得很好。我改变了一些东西，现在改成了另外一类。我得到一个nullpointerExecption。（承包商获得从活动上下文PendingIntent null当试图从类中调用它

暂停功能：

public void settingNewIntentForSnooze() { 
    PendingIntent alarmPendingIntent=null; 
    Calendar calendar = Calendar.getInstance(); 
    // new alarm after the snooze. 
    calendar.set(Calendar.MINUTE, calendar.get(Calendar.MINUTE) + snoozeTime); 
    Intent snoozeIntent = new Intent(context, Alarm_Reciver.class); 
    snoozeIntent.putExtra("click_status", true); 
    //add that to try to solve the problem... 
    snoozeIntent.setAction("Snooze"); 
    alarmPendingIntent = PendingIntent.getBroadcast(context, 0, snoozeIntent, alarmPendingIntent.FLAG_ONE_SHOT); 
    //tells to phone to set the alarm 
    alarm_manager.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), alarmPendingIntent); 
}

AlarmPage活性（即外币的变量的代码）：

snooze= new Snooze(this,alarm_manager);

AlarmReciver：

public void onReceive(Context context, Intent intent) { 
    Log.e("in alarm reciver","in alarm reciver"); 
    Intent service_intent= new Intent(context, RingtonePlayingService.class);//intent for the service ringtone playing 
    boolean button_status = intent.getExtras().getBoolean("click_status"); 
    service_intent.putExtra("click_status", button_status);//passing button status 
    context.startService(service_intent);//start the ringtone service 
}

错误：

09-17 18:25:25.564 1563-1563/com.example.itay.newfrindlyalarm E/AndroidRuntime: FATAL EXCEPTION: main 
                      Process: com.example.itay.newfrindlyalarm, PID: 1563 
                      java.lang.NullPointerException: Attempt to invoke virtual method 'void android.app.AlarmManager.set(int, long, android.app.PendingIntent)' on a null object reference 
                       at com.example.itay.newfrindlyalarm.Snooze.settingNewIntentForSnooze(Snooze.java:60) 
                       at com.example.itay.newfrindlyalarm.Snooze.operate(Snooze.java:44) 
                       at com.example.itay.newfrindlyalarm.AlarmPage.operateSnooze(AlarmPage.java:88) 
                       at com.example.itay.newfrindlyalarm.AlarmPage$3.onClick(AlarmPage.java:68) 
                       at android.view.View.performClick(View.java:6256) 
                       at android.view.View$PerformClick.run(View.java:24697) 
                       at android.os.Handler.handleCallback(Handler.java:789) 
                       at android.os.Handler.dispatchMessage(Handler.java:98) 
                       at android.os.Looper.loop(Looper.java:164) 
                       at android.app.ActivityThread.main(ActivityThread.java:6541) 
                       at java.lang.reflect.Method.invoke(Native Method) 
                       at com.android.internal.os.Zygote$MethodAndArgsCaller.run(Zygote.java:240) 
                       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:767) 
enter code here

来源

2017-09-17 Nakash.i

为什么你要在第一行定义'alarmPendingInten = null'，但是当你可以'getBroadcast'后再覆盖它呢？这是不好的风格:) –

'settingNewIntentForSnooze'方法中'context'的值是什么？它有很好的价值吗？ –

请添加您的错误信息。这是很难调试代码没有看到错误:) –

根据错误信息判断，有没有可能alarm_manager是null？如果您正确初始化AlarmManager，错误会消失吗？

来源

2017-09-17 16:24:36

是的，我刚刚创建了一个贪睡对象，然后才初始化我输入到他的构造函数中的AlarmManager ..我花了两个小时处理这个错误，现在我看到了它的简单性。非常感谢！ –

PendingIntent null当试图从类中调用它

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