Android无法通过额外的意图虽然AlarmManager

本文介绍了Android无法通过额外的意图虽然AlarmManager的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我试图把一个额外的消息，在我的意图传递给AlarmManager在以后的时间被触发。我的onReceive正确触发，但extras.getString（）返回null

设置：

公共PendingIntent getPendingIntent（INT uniqueRequest code，字符串额外的）{     意向意图=新的意图（这一点，ActionReceiver.class）;     intent.putExtra（额外的，另计）;     PendingIntent pendingIntent = PendingIntent.getBroadcast（这一点，uniqueRequest code，             意图，0）;     返回pendingIntent; } 公共无效setSilentLater（TimeRule timeRule）{     布尔[]平日= timeRule.getReoccurringWeekdays（）;     INT DAYOFWEEK = 0;     对于（布尔日：周一至周五）{         一周中的某天++;         如果（天==真）{             日历CAL = Calendar.getInstance（）;             AlarmManager alarmManager =（AlarmManager）本                     .getSystemService（Context.ALARM_SERVICE）;             cal.set（Calendar.DAY_OF_WEEK，星期几）;             cal.set（Calendar.HOUR_OF_DAY，                     。timeRule.getStartTime（）得到（Calendar.HOUR_OF_DAY））;             cal.set（Calendar.MINUTE，                     。timeRule.getStartTime（）得到（Calendar.MINUTE））;             cal.set（Calendar.SECOND，0）;             cal.set（Calendar.MILLISECOND，0）;             alarmManager.setRepeating（AlarmManager.RTC_WAKEUP，                     cal.getTimeInMillis（），3600000 * 7，getPendingIntent（0，RINGER_OFF））;   }  } }

在此触发，消息是空的：

公共类ActionReceiver扩展的BroadcastReceiver {     @覆盖     公共无效的onReceive（上下文的背景下，意图意图）{          捆绑额外= intent.getExtras（）;          字符串消息= extras.getString（额外）; //空          如果（消息==RINGER_OFF）          {              AudioManager上午=（AudioManager）context.getSystemService（Context.AUDIO_SERVICE）;              am.setRingerMode（AudioManager.RINGER_MODE_SILENT）;          }          否则，如果（消息==RINGER_ON）          {              AudioManager上午=（AudioManager）context.getSystemService（Context.AUDIO_SERVICE）;              am.setRingerMode（AudioManager.RINGER_MODE_NORMAL）;          }     } }

解决方案

//前更换code     捆绑额外= intent.getExtras（）;     字符串消息= extras.getString（额外）; //后更换code      字符串消息= intent.getStringExtra（额外）;                      要么 //前替换code    意向意图=新的意图（这一点，ActionReceiver.class）;    intent.putExtra（额外的，另计）; //后更换code    意向意图=新的意图（这一点，ActionReceiver.class）;    束束=新包（）;    bundle.putString（额外的，另计）;    intent.putExtras（包）;

I am trying to put an extra message in my intent to pass to AlarmManager to be triggered at a later time. My onReceive triggers correctly but extras.getString() returns null

Setup:

public PendingIntent getPendingIntent(int uniqueRequestCode, String extra) { Intent intent = new Intent(this, ActionReceiver.class); intent.putExtra("EXTRA", extra); PendingIntent pendingIntent = PendingIntent.getBroadcast(this, uniqueRequestCode, intent, 0); return pendingIntent; } public void setSilentLater(TimeRule timeRule) { boolean[] weekdays = timeRule.getReoccurringWeekdays(); int dayOfWeek = 0; for (boolean day : weekdays) { dayOfWeek++; if (day == true) { Calendar cal = Calendar.getInstance(); AlarmManager alarmManager = (AlarmManager) this .getSystemService(Context.ALARM_SERVICE); cal.set(Calendar.DAY_OF_WEEK, dayOfWeek); cal.set(Calendar.HOUR_OF_DAY, timeRule.getStartTime().get(Calendar.HOUR_OF_DAY)); cal.set(Calendar.MINUTE, timeRule.getStartTime().get(Calendar.MINUTE)); cal.set(Calendar.SECOND, 0); cal.set(Calendar.MILLISECOND, 0); alarmManager.setRepeating(AlarmManager.RTC_WAKEUP, cal.getTimeInMillis(), 3600000 * 7, getPendingIntent(0, "RINGER_OFF")); } } }

When this triggers, message is empty:

public class ActionReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { Bundle extras = intent.getExtras(); String message = extras.getString("EXTRA"); //empty if(message == "RINGER_OFF") { AudioManager am = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE); am.setRingerMode(AudioManager.RINGER_MODE_SILENT); } else if(message == "RINGER_ON") { AudioManager am = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE); am.setRingerMode(AudioManager.RINGER_MODE_NORMAL); } } }

解决方案

// before replace code Bundle extras = intent.getExtras(); String message = extras.getString("EXTRA"); // after replace code String message = intent.getStringExtra("EXTRA"); OR // before replace code Intent intent = new Intent(this, ActionReceiver.class); intent.putExtra("EXTRA", extra); // after replace code Intent intent = new Intent(this, ActionReceiver.class); Bundle bundle = new Bundle(); bundle.putString("EXTRA", extra); intent.putExtras(bundle);