[英]Broadcast receiver and memory leaks
在我的应用中; 我想在所有服务中接收网络连接更改,因为我必须同时在本地和服务器上管理数据库。
我已经制作了BaseConnectivityService
,它具有如下接收器,用于进行连接更改:
public abstract class BaseConnectivityService extends IntentService {
private ConnectivityManager mConnectivityManager;
public BaseConnectivityService(String name) {
super(name);
}
@Override
public void onCreate() {
super.onCreate();
mConnectivityManager = (ConnectivityManager) getSystemService(CONNECTIVITY_SERVICE);
registerReceivers();
}
@Override
public void onDestroy() {
unregisterReceivers();
mConnectivityManager = null;
super.onDestroy();
}
private void registerReceivers() {
IntentFilter connectivityIntentFilter = new IntentFilter(ConnectivityManager.CONNECTIVITY_ACTION);
registerReceiver(mConnectivityChangeReceiver, connectivityIntentFilter);
}
private void unregisterReceivers() {
unregisterReceiver(mConnectivityChangeReceiver);
}
/**
* will be invoked when network connectivity has been changed and network is in connected state
*/
protected abstract void onNetworkConnected();
/**
* will be invoked when network connectivity has been changed and network is NOT in connected state
*/
protected abstract void onNetworkDisconnected();
/**
* checks whether network is available and is in connected state
*
* @return true if network is connected; false otherwise
*/
protected final boolean isNetworkConnected() {
NetworkInfo activeNetworkInfo = mConnectivityManager.getActiveNetworkInfo();
return activeNetworkInfo != null && activeNetworkInfo.isAvailable() && activeNetworkInfo.isConnected();
}
private final BroadcastReceiver mConnectivityChangeReceiver = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (isNetworkConnected()) {
onNetworkConnected();
} else {
onNetworkDisconnected();
}
}
};
}
现在,如果我使用BaseConnectivityService
扩展所有服务; 它会导致内存泄漏,因为该系统会将服务保留在内存中以通知连接更改吗?
我已经阅读了这个主题 ; 这有点类似的问题。 正如马克·墨菲(Mark Murphy)在那写的那样:
您将泄漏内存,因为BroadcastReceiver会将组件保留在RAM中(即使它已销毁),直到Android终止进程为止。
它适用于我的情况吗? 如果是,那么什么是避免内存泄漏并获得网络连接更改通知的好的解决方案?
查看同一线程中的最后一个响应。 您可以从Service类注册和注销广播接收器。 如果它与服务生命周期绑定在一起,则没有泄漏的机会。
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