据我所知,处理程序可以在Android的内存泄漏,但我不是很确定我所做的是正确的:Android处理程序,内存泄漏?
public class MyActivity extends Activity
{
Handler handler;
HashMap<String, String> bigData = new HashMap<String, String>();
protected void onCreate(undle savedInstanceState) {
super.onCreate(savedInstanceState);
handler = new WeakHandler(){
public void handlerMessage(Message msg, Context conetxt)
{
// i think this usage is wrong, still leak, am I right?
Log.v("MyActivity", bigData.get("abc"))
}
}
};
static class WeakHandler extends Handler {
private final WeakReference<Context> ref;
public WeakHandler(Context t) {
super();
ref = new WeakReference<Context>(t);
}
@Override
public final void handleMessage(Message msg) {
final Context context = ref.get();
if (context != null) {
handleMessage(msg, context);
}
}
public void handlerMessage(Message msg, Context conetxt)
{
}
}
而且,如果我只想用一个处理程序“后”,“postDelayed” “removeCallbacks”,我不关心的handleMessage,是安全的,只需要创建一个新的处理程序实例要做到这一点,就像这样:
new Handler().postDelayed(some Runnable);
参考[这里](http://v4all123.blogspot.com/2012/12/handler.html)处理器帮助在android – Gunaseelan 2013-03-26 06:01:12