android - 无法从 Intent 中获取额外的值

Question

我知道我可以 intent.putExtra(key, value) 来放置值，我们可以 intent.getStringExtra(key) 来检索值，但是在下面的代码中它没有按预期运行。检索值时，我收到 NUllPointer，printLn 需要一条消息。

我设置值的代码:

public void SetAlarm(Context context, int seconds, String type) {
    CustomLog.logBlue(Thread.currentThread().getStackTrace(), "set alarm");

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

    Intent intent = new Intent(context, AlarmManagerBroadcastReceiver.class);
    intent.putExtra(ONE_TIME, Boolean.FALSE); //ONE_TIME = "oneTime"
    intent.putExtra("c", "ayush");

    PendingIntent pi = PendingIntent.getBroadcast(context, 0, intent, 0);
    am.setRepeating(AlarmManager.RTC_WAKEUP, System.currentTimeMillis(), seconds * 1000, pi);

    CustomNotification.generateNotification(1, context, "Tracking enabled");
}

我正在 BroadcaseReceiver 的 onReceive 中检索值:[省略无关代码]

@Override
public void onReceive(Context context, Intent intent) {
     Bundle extras = intent.getExtras();
     Log.e("test", extras.getString("c"); <------ ERROR
     // also tried intent.getStringExtra("c");
}

Answer 1

使用标志 FLAG_UPDATE_CURRENT打电话时 PendingIntent.getBroadcast() .在您的代码中:

PendingIntent pi = PendingIntent.getBroadcast(
                                 context, 0, intent, 
                                 PendingIntent.FLAG_UPDATE_CURRENT);