android – Pushwoosh漏掉了我的活动

我在我的应用程序中使用Pushwoosh来接收推送通知.我正在使用最新版本的Pushwoosh库3.1.14.

我有这样的屏幕结构.

Login Activity -> Main Activity with multiple tabs.

所以我在MainActivity中实现了与pushwoosh相关的逻辑.我想从注销logout取消注册,然后返回Login Activity.

我的代码如下.我已经过滤掉了与Pushwoosh无关的所有其他部分.坦率地说,这段代码与Pushwoosh文档here中的代码完全相似.唯一的区别在于onlogout()方法,我尝试从pushwoosh取消注册并返回LoginActivity.

Tabbaractivity.java

@Override
protected void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);

   //Pushwoosh Registration
   registerReceivers();
   PushManager pushManager = PushManager.getInstance(this);
   pushManager.setNotificationFactory(new PushNotificationFactory());
   try {
       pushManager.onStartup(this);
   } catch(Exception e) {}

   //Register for push!
   pushManager.registerForPushNotifications();
   checkMessage(getIntent());
} 


@Override 
protected void onNewIntent(Intent intent) {
    super.onNewIntent(intent);    
    setIntent(intent);    
    checkMessage(intent);
}

@Override
protected void onResume() {    
    super.onResume();    
    registerReceivers();
}

@Override
protected void onPause() {    
    super.onPause();    
    unregisterReceivers();
}

broadcastReceiver mbroadcastReceiver = new BaseRegistrationReceiver() {    
   @Override    
   public void onRegisteractionReceive(Context context,Intent intent) {        
       checkMessage(intent);    
   }
};

private broadcastReceiver mReceiver = new BasePushMessageReceiver() {
   @Override    protected void onMessageReceive(Intent intent) {
     //JSON_DATA_KEY contains JSON payload of push notification.    
   }
};

public void registerReceivers() {
  IntentFilter intentFilter = new IntentFilter(
    getPackageName() + ".action.PUSH_MESSAGE_RECEIVE");
  registerReceiver(mReceiver,intentFilter,getPackageName() +".permission.C2D_MESSAGE",null);    
  registerReceiver(mbroadcastReceiver,new IntentFilter(
    getPackageName() + "." + PushManager.REGISTER_broAD_CAST_ACTION));
}

public void unregisterReceivers() {
  try {
    unregisterReceiver(mReceiver);    
  } catch (Exception e) {
    e.printstacktrace();    
  }

  try {        
    unregisterReceiver(mbroadcastReceiver);
  } catch (Exception e) {
    e.printstacktrace();   
  }
}

private void checkMessage(Intent intent) {
  if (null != intent) {
    if (intent.hasExtra(PushManager.REGISTER_EVENT)) {
       uploadPushTokenToServer(PushManager.getPushToken(this));
    }
   resetIntentValues();    
  }
}

private void resetIntentValues() {
  Intent mainAppIntent = getIntent();
  if (mainAppIntent.hasExtra(PushManager.PUSH_RECEIVE_EVENT)) {
    mainAppIntent.removeExtra(PushManager.PUSH_RECEIVE_EVENT);    
  } else if (mainAppIntent.hasExtra(PushManager.REGISTER_EVENT)) {
    mainAppIntent.removeExtra(PushManager.REGISTER_EVENT);
  } else if (mainAppIntent.hasExtra(PushManager.UNREGISTER_EVENT)) {
    mainAppIntent.removeExtra(PushManager.UNREGISTER_EVENT);
  } else if (mainAppIntent.hasExtra(PushManager.REGISTER_ERROR_EVENT)) {
    mainAppIntent.removeExtra(PushManager.REGISTER_ERROR_EVENT);
  } else if (mainAppIntent.hasExtra(PushManager.UNREGISTER_ERROR_EVENT)) {
    mainAppIntent.removeExtra(PushManager.UNREGISTER_ERROR_EVENT);
  }
  setIntent(mainAppIntent);
}

//Finally on logout
private void onlogout() {
   //other cleanup

   //pushwoosh
   PushManager.getInstance(this).unregisterForPushNotifications();

   //goback to login activity
}

我正在从服务器推送没有任何问题.我面临的唯一问题是在我注销并返回LoginActivity之后,Tabbaractivity仍保留在内存中,而后者又保留了许多其他片段和视图.我尝试使用MAT进行调试,这就是它所显示的内容.

Class Name                                                                      | Ref. Objects | Shallow Heap | Ref. Shallow Heap | Retained Heap
--------------------------------------------------------------------------------------------------------------------------------------------------
com.pushwoosh.internal.request.RequestManager$1 @ 0x12f89ce0  Thread-1737 Thread|            1 |           88 |               360 |           536
'- val$context in.myproject.activities.Tabbaractivity         @ 0x12d8ac40      |            1 |          360 |               360 |        18,520
--------------------------------------------------------------------------------------------------------------------------------------------------

我还使用LeakCanary工具交叉检查相同,这也表明Pushwoosh正在坚持我的活动.

所以我的问题是,如何清理pushwoosh以避免我的活动泄露？

解决方法

通过简要地查看它们,您引用的文档就是一个示例,这些示例并不总是将api实现为具有其他活动的功能齐全的应用程序的最佳方式.我理解通过使用getInstance,你试图使用单例,但怀疑这不是很好管理.

我将控制在您的应用程序持续时间内使用的PushManager实例.

问题可能是从作用域创建了多个PushManager实例,并在类中创建了多个pushManager实例,并且可能在程序的生命周期内.这会导致泄漏.

我将pushManager作为一个类变量,而不是使用PushManager.getInstance两次,并考虑创建一个静态的PushManager实例,用于应用程序的持续时间,就像在整个应用程序中使用单个数据库实例一样.

在班级：

PushManager pushManager;

并在oncreate中初始化

pushManager = PushManager.getInstance(this);


//Finally on logout
private void onlogout() {
    //other cleanup

    //pushwoosh
    // Here the first instance is left dangling.
    // PushManager.getInstance(this).unregisterForPushNotifications();

    pushManager..unregisterForPushNotifications();

    //goback to login activity
}

这样你就可以清理pushmanager的一个实例的资源.

要使用app wide静态PushManager：

static PushManager pushManager;

初始化为：

pushManager = new PushManager(this.getApplicationContext());

When is a Singleton not a Singleton?

android – Pushwoosh漏掉了我的活动

解决方法

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