1. 在MessagelistActivity中出現has leaked IntentReceiver的異常。異常日志如下。
07-15 08:09:53.211: E/ActivityThread(15491): Activity com.txrj.sms.activity.MessageListActivity has leaked IntentReceiver com.txrj.sms.activity.MessageListActivity$6@41e189d0 that was originally registered here. Are you missing a call to unregisterReceiver()?
07-15 08:09:53.211: E/ActivityThread(15491): android.app.IntentReceiverLeaked: Activity com.txrj.sms.activity.MessageListActivity has leaked IntentReceiver com.txrj.sms.activity.MessageListActivity$6@41e189d0 that was originally registered here. Are you missing a call to unregisterReceiver()?
07-15 08:09:53.211: E/ActivityThread(15491): at android.app.LoadedApk$ReceiverDispatcher.<init>(LoadedApk.java:763)
07-15 08:09:53.211: E/ActivityThread(15491): at android.app.LoadedApk.getReceiverDispatcher(LoadedApk.java:567)
07-15 08:09:53.211: E/ActivityThread(15491): at android.app.ContextImpl.registerReceiverInternal(ContextImpl.java:1167)
07-15 08:09:53.211: E/ActivityThread(15491): at android.app.ContextImpl.registerReceiver(ContextImpl.java:1154)
07-15 08:09:53.211: E/ActivityThread(15491): at android.app.ContextImpl.registerReceiver(ContextImpl.java:1148)
07-15 08:09:53.211: E/ActivityThread(15491): at android.content.ContextWrapper.registerReceiver(ContextWrapper.java:348)
07-15 08:09:53.211: E/ActivityThread(15491): at com.txrj.sms.activity.MessageListActivity.getDeliveryIntent(MessageListActivity.java:247)
07-15 08:09:53.211: E/ActivityThread(15491): at com.txrj.sms.activity.MessageListActivity.sendMessage(MessageListActivity.java:196)
07-15 08:09:53.211: E/ActivityThread(15491): at com.txrj.sms.activity.MessageListActivity.access$14(MessageListActivity.java:190)
07-15 08:09:53.211: E/ActivityThread(15491): at com.txrj.sms.activity.MessageListActivity$2.onClick(MessageListActivity.java:120)
07-15 08:09:53.211: E/ActivityThread(15491): at android.view.View.performClick(View.java:3567)
07-15 08:09:53.211: E/ActivityThread(15491): at android.view.View$PerformClick.run(View.java:14224)
07-15 08:09:53.211: E/ActivityThread(15491): at android.os.Handler.handleCallback(Handler.java:605)
07-15 08:09:53.211: E/ActivityThread(15491): at android.os.Handler.dispatchMessage(Handler.java:92)
07-15 08:09:53.211: E/ActivityThread(15491): at android.os.Looper.loop(Looper.java:137)
07-15 08:09:53.211: E/ActivityThread(15491): at android.app.ActivityThread.main(ActivityThread.java:4517)
07-15 08:09:53.211: E/ActivityThread(15491): at java.lang.reflect.Method.invokeNative(Native Method)
07-15 08:09:53.211: E/ActivityThread(15491): at java.lang.reflect.Method.invoke(Method.java:511)
07-15 08:09:53.211: E/ActivityThread(15491): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:993)
07-15 08:09:53.211: E/ActivityThread(15491): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:760)
07-15 08:09:53.211: E/ActivityThread(15491): at dalvik.system.NativeStart.main(Native Method)
07-15 08:09:53.221: E/ActivityThread(15491): Activity com.txrj.sms.activity.MessageListActivity has leaked IntentReceiver com.txrj.sms.activity.MessageListActivity$5@41df9b80 that was originally registered here. Are you missing a call to unregisterReceiver()?
07-15 08:09:53.221: E/ActivityThread(15491): android.app.IntentReceiverLeaked: Activity com.txrj.sms.activity.MessageListActivity has leaked IntentReceiver com.txrj.sms.activity.MessageListActivity$5@41df9b80 that was originally registered here. Are you missing a call to unregisterReceiver()?
07-15 08:09:53.221: E/ActivityThread(15491): at android.app.LoadedApk$ReceiverDispatcher.<init>(LoadedApk.java:763)
07-15 08:09:53.221: E/ActivityThread(15491): at android.app.LoadedApk.getReceiverDispatcher(LoadedApk.java:567)
07-15 08:09:53.221: E/ActivityThread(15491): at android.app.ContextImpl.registerReceiverInternal(ContextImpl.java:1167)
07-15 08:09:53.221: E/ActivityThread(15491): at android.app.ContextImpl.registerReceiver(ContextImpl.java:1154)
07-15 08:09:53.221: E/ActivityThread(15491): at android.app.ContextImpl.registerReceiver(ContextImpl.java:1148)
07-15 08:09:53.221: E/ActivityThread(15491): at android.content.ContextWrapper.registerReceiver(ContextWrapper.java:348)
07-15 08:09:53.221: E/ActivityThread(15491): at com.txrj.sms.activity.MessageListActivity.getSentIntent(MessageListActivity.java:232)
07-15 08:09:53.221: E/ActivityThread(15491): at com.txrj.sms.activity.MessageListActivity.sendMessage(MessageListActivity.java:195)
07-15 08:09:53.221: E/ActivityThread(15491): at com.txrj.sms.activity.MessageListActivity.access$14(MessageListActivity.java:190)
07-15 08:09:53.221: E/ActivityThread(15491): at com.txrj.sms.activity.MessageListActivity$2.onClick(MessageListActivity.java:120)
07-15 08:09:53.221: E/ActivityThread(15491): at android.view.View.performClick(View.java:3567)
07-15 08:09:53.221: E/ActivityThread(15491): at android.view.View$PerformClick.run(View.java:14224)
07-15 08:09:53.221: E/ActivityThread(15491): at android.os.Handler.handleCallback(Handler.java:605)
07-15 08:09:53.221: E/ActivityThread(15491): at android.os.Handler.dispatchMessage(Handler.java:92)
07-15 08:09:53.221: E/ActivityThread(15491): at android.os.Looper.loop(Looper.java:137)
07-15 08:09:53.221: E/ActivityThread(15491): at android.app.ActivityThread.main(ActivityThread.java:4517)
07-15 08:09:53.221: E/ActivityThread(15491): at java.lang.reflect.Method.invokeNative(Native Method)
07-15 08:09:53.221: E/ActivityThread(15491): at java.lang.reflect.Method.invoke(Method.java:511)
07-15 08:09:53.221: E/ActivityThread(15491): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:993)
07-15 08:09:53.221: E/ActivityThread(15491): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:760)
07-15 08:09:53.221: E/ActivityThread(15491): at dalvik.system.NativeStart.main(Native Method)
2. 出現異常原因分析。在發送信息時，創建了兩個PendingIntent，它們是調用方法getBroadcast來發送廣播。在此之前調用registerBroadcast注冊廣播，查看代碼找不到注銷廣播的語句，所以導致出現leaked IntentReceiver的異常。以下是改正之后的代碼。
private PendingIntent getSentIntent(final Uri uri) {
BroadcastReceiver receiver = new BroadcastReceiver(){
@Override
public void onReceive(Context context, Intent intent) {
mContext.unregisterReceiver(this);
int resultCode = getResultCode();
if(resultCode == RESULT_OK) {
Toast.makeText(context, "send message success.", Toast.LENGTH_SHORT).show();
//Log.i("txrjsms", "send message success.");
updateMsgType(uri, Sms.MESSAGE_TYPE_SENT);
} else if(resultCode == SmsManager.RESULT_ERROR_GENERIC_FAILURE) {
Toast.makeText(context, "Generic failure.", Toast.LENGTH_SHORT).show();
updateMsgType(uri, Sms.MESSAGE_TYPE_FAILED);
} else if(resultCode == SmsManager.RESULT_ERROR_NO_SERVICE) {
Toast.makeText(context, "service is currently unavailable.", Toast.LENGTH_SHORT).show();
updateMsgType(uri, Sms.MESSAGE_TYPE_FAILED);
} else if(resultCode == SmsManager.RESULT_ERROR_NULL_PDU) {
Toast.makeText(context, "no pdu provided.", Toast.LENGTH_SHORT).show();
updateMsgType(uri, Sms.MESSAGE_TYPE_FAILED);
} else if(resultCode == SmsManager.RESULT_ERROR_RADIO_OFF) {
Toast.makeText(context, "radio was explicitly turned off.", Toast.LENGTH_SHORT).show();
updateMsgType(uri, Sms.MESSAGE_TYPE_FAILED);
}
}
};
IntentFilter filter = new IntentFilter(TxrjConstant.ACTION_SEND_SMS);
mContext.registerReceiver(receiver, filter);
Intent sentIntent = new Intent(TxrjConstant.ACTION_SEND_SMS);
return PendingIntent.getBroadcast(mContext, 0, sentIntent, 0);
}
private PendingIntent getDeliveryIntent() {
BroadcastReceiver receiver = new BroadcastReceiver(){
@Override
public void onReceive(Context context, Intent intent) {
mContext.unregisterReceiver(this);
Toast.makeText(context, "message arrived.", Toast.LENGTH_SHORT).show();
//Log.i("txrjsms", "message arrived.");
}
};
IntentFilter filter = new IntentFilter(TxrjConstant.ACTION_DELIVERY_SMS);
mContext.registerReceiver(receiver, filter);
Intent deliveryIntent = new Intent(TxrjConstant.ACTION_DELIVERY_SMS);
return PendingIntent.getBroadcast(mContext, 0, deliveryIntent, 0);
}
3. 添加了注銷廣播接收器的語句之后還會有問題。比如，發出信息之后，對方有信息回復時，在MessageListActivity界面中無法將剛收到的信息顯示出來。優化注冊和注銷Receiver的代碼。以下是優化過的代碼，將receiver作為實例變量來定義，在第一次獲取sentIntert和deliveryIntent時創建並注冊它們。在onDestroy方法中注銷它們。
在sentReceiver中需要傳遞表示發送信息的uri。在調用getBroadcast時通過intent.putExtra放入Uri。在onReceive方法中通過intent.getParcelableExtra取出Uri。
private void createAndRegisterSentReceiver() {
sentReceiver = new BroadcastReceiver(){
@Override
public void onReceive(Context context, Intent intent) {
Uri uri = intent.getParcelableExtra(TxrjConstant.EXTRA_SENT_URI);
int resultCode = getResultCode();
if(resultCode == RESULT_OK) {
Toast.makeText(context, "send message success.", Toast.LENGTH_SHORT).show();
updateMsgType(uri, Sms.MESSAGE_TYPE_SENT);
} else if(resultCode == SmsManager.RESULT_ERROR_GENERIC_FAILURE) {
Toast.makeText(context, "Generic failure.", Toast.LENGTH_SHORT).show();
updateMsgType(uri, Sms.MESSAGE_TYPE_FAILED);
} else if(resultCode == SmsManager.RESULT_ERROR_NO_SERVICE) {
Toast.makeText(context, "service is currently unavailable.", Toast.LENGTH_SHORT).show();
updateMsgType(uri, Sms.MESSAGE_TYPE_FAILED);
} else if(resultCode == SmsManager.RESULT_ERROR_NULL_PDU) {
Toast.makeText(context, "no pdu provided.", Toast.LENGTH_SHORT).show();
updateMsgType(uri, Sms.MESSAGE_TYPE_FAILED);
} else if(resultCode == SmsManager.RESULT_ERROR_RADIO_OFF) {
Toast.makeText(context, "radio was explicitly turned off.", Toast.LENGTH_SHORT).show();
updateMsgType(uri, Sms.MESSAGE_TYPE_FAILED);
}
}
};
IntentFilter filter = new IntentFilter(TxrjConstant.ACTION_SEND_SMS);
mContext.registerReceiver(sentReceiver, filter);
}
private PendingIntent getSentIntent(final Uri uri) {
if(sentReceiver == null) {
createAndRegisterSentReceiver();
}
Intent sentIntent = new Intent(TxrjConstant.ACTION_SEND_SMS);
sentIntent.putExtra(TxrjConstant.EXTRA_SENT_URI, uri);
return PendingIntent.getBroadcast(mContext, 0, sentIntent, 0);
}
deliveryReceiver使用類似的處理方法。代碼如下所示。
private void createAndRegisterDeliveryIntent() {
deliveryReceiver = new BroadcastReceiver(){
@Override
public void onReceive(Context context, Intent intent) {
mContext.unregisterReceiver(this);
Toast.makeText(context, "message arrived.", Toast.LENGTH_SHORT).show();
}
};
IntentFilter filter = new IntentFilter(TxrjConstant.ACTION_DELIVERY_SMS);
mContext.registerReceiver(deliveryReceiver, filter);
}
private PendingIntent getDeliveryIntent() {
if(deliveryReceiver == null) {
createAndRegisterDeliveryIntent();
}
Intent deliveryIntent = new Intent(TxrjConstant.ACTION_DELIVERY_SMS);
return PendingIntent.getBroadcast(mContext, 0, deliveryIntent, 0);
}
在onDestroy()方法中注銷sentReceiver和deliveryReceiver。
protected void onDestroy() {
super.onDestroy();
getContentResolver().unregisterContentObserver(mInboxObserver);
if(sentReceiver != null) {
unregisterReceiver(sentReceiver);
}
if(deliveryReceiver != null) {
unregisterReceiver(deliveryReceiver);
}
}