這個Handler類應(yīng)該是靜態(tài)的，否則可能會發(fā)生泄漏：IncomingHandler我正在用服務(wù)開發(fā)一個Android2.3.3應(yīng)用程序。我在該服務(wù)中有一個與主要活動進行溝通的方法：public class UDPListenerService extends Service{
private static final String TAG = "UDPListenerService";
//private ThreadGroup myThreads = new ThreadGroup("UDPListenerServiceWorker");
private UDPListenerThread myThread;
/**
* Handler to communicate from WorkerThread to service.
*/
private Handler mServiceHandler;
// Used to receive messages from the Activity
final Messenger inMessenger = new Messenger(new IncomingHandler());
// Use to send message to the Activity
private Messenger outMessenger;
class IncomingHandler extends Handler
{
@Override
public void handleMessage(Message msg)
{
}
}
/**
* Target we publish for clients to send messages to Incoming Handler.
*/
final Messenger mMessenger = new Messenger(new IncomingHandler());
[ ... ]}在這里，final Messenger mMessenger = new Messenger(new IncomingHandler());，我收到以下林特警告：This Handler class should be static or leaks might occur: IncomingHandler什么意思？
3 回答
慕田峪7331174
TA貢獻1828條經(jīng)驗 獲得超13個贊
public class MyClass{
//static inner class doesn't hold an implicit reference to the outer class
private static class MyHandler extends Handler {
//Using a weak reference means you won't prevent garbage collection
private final WeakReference<MyClass> myClassWeakReference;
public MyHandler(MyClass myClassInstance) {
myClassWeakReference = new WeakReference<MyClass>(myClassInstance);
}
@Override
public void handleMessage(Message msg) {
MyClass myClass = myClassWeakReference.get();
if (myClass != null) {
...do work here...
}
}
}
/**
* An example getter to provide it to some external class
* or just use 'new MyHandler(this)' if you are using it internally.
* If you only use it internally you might even want it as final member:
* private final MyHandler mHandler = new MyHandler(this);
*/
public Handler getHandler() {
return new MyHandler(this);
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