關於android中PendingIntent.getBroadcase的註冊廣播

使用語句

[java] view plaincopyprint?PendingIntent intent= PendingIntent.getBroadcast(Context context, int requestCode, Intent intent, int flags)

PendingIntent intent= PendingIntent.getBroadcast(Context context, int requestCode, Intent intent, int flags)

得到PendingIntent，瀏覽了各種文章，大多數說了這種方法，可是基本上也就是止步於此，但是還有最重要的沒有談及，如何區別多個已註冊的PendingIntent呢，看了一下PendingIntent.getBroadcast的javadoc，第四個參數flags意爲標記，初步認爲flags是標識各個PendingIntent的，因而在測試中設置了個全局變量

[java] view plaincopyprint?public static int currentIntent=0;

public static int currentIntent=0; 而後用currentIntent++做爲第四個參數傳遞進去，測試，註冊了兩個監聽，等待時間的到來，bingo，竟然能夠了，目測已經能夠。但是繼續深刻時問題來了，我要傳遞參數怎樣？正解作法就是在第三個參數中設置

[java] view plaincopyprint?intent.setExtra(String key,String value); //設置傳遞的參數

intent.setExtra(String key,String value); //設置傳遞的參數 而後在本身實現的Receiver裏用傳進來的參數Intent intent實現

[java] view plaincopyprint?intent.getIntegerExtra(String key);

intent.getIntegerExtra(String key); 就能夠得到參數，能夠真正在實現的時候發現，在receiver裏始終取不到參數，再通過一番查找，發現要把PendingIntent.getBroadcast的第四個參數設置於PendingIntent.FLAG_UPDATE_CURRENT，設置後測試，果真能夠，但是這樣問題又出來了，又要如何區別註冊的intent呢？再次查看getBroadcast的javadoc，幾個參數都沒有說明如何區別要註冊的PendingIntent，反而看到第二個參數的說明很神奇，就是這個參數目前爲保留狀態，仍未用到，無奈中，繼續search各類說法，才發現，用requestCode來區別竟然是能夠的（但是爲何javadoc要說該參數未被使用呢？不解；估計用於區分PendingIntent的方法就是其中任意一個參數不一樣即可以區分了）代碼以下：

設置監聽

[java] view plaincopyprint?Intent setAlertIntent=new Intent(this,AlertReceiver.class);
setAlertIntent.putExtra("try", "i'm just have a try");
PendingIntent pendingIntent=PendingIntent.getBroadcast(this, alarmCount++, setAlertIntent,PendingIntent.FLAG_UPDATE_CURRENT);

AlarmManager alarmManager=(AlarmManager)getSystemService(ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pendingIntent);

Intent setAlertIntent=new Intent(this,AlertReceiver.class);
	setAlertIntent.putExtra("try", "i'm just have a try");
	PendingIntent pendingIntent=PendingIntent.getBroadcast(this, alarmCount++, setAlertIntent,PendingIntent.FLAG_UPDATE_CURRENT);

	AlarmManager alarmManager=(AlarmManager)getSystemService(ALARM_SERVICE);
	alarmManager.set(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pendingIntent);

Receiver中獲取傳遞的數據：

[java] view plaincopyprint?public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
Bundle bundle= intent.getExtras();
if(bundle==null){
Toast.makeText(context,"nothing", Toast.LENGTH_LONG).show();
}else{
Set<String> set=bundle.keySet();
for(String item:set){
System.out.println(item);
System.out.println(".............");
}
Toast.makeText(context,bundle.getCharSequence("try"), Toast.LENGTH_LONG).show();
}

}

public void onReceive(Context context, Intent intent) {
	// TODO Auto-generated method stub
	Bundle bundle= intent.getExtras();
	if(bundle==null){
		Toast.makeText(context,"nothing", Toast.LENGTH_LONG).show();
	}else{
		Set<String> set=bundle.keySet();
		for(String item:set){
			System.out.println(item);
			System.out.println(".............");
		}
		Toast.makeText(context,bundle.getCharSequence("try"), Toast.LENGTH_LONG).show();
	}
	
}