这个Handler会不会泄漏Context?

时间:2013-02-28 14:29:36

标签: android android-context android-handler

我知道,如果您直接初始化Handler并在Activity中使用它,则会泄漏Context(由Alex Lockwood提供),例如

public class SampleActivity extends Activity {

  private final Handler mLeakyHandler = new Handler() {
    @Override
    public void handleMessage(Message msg) {
      /* ... */
    }
  }
}

所以我使用了以下方法

private static class StaticHandler extends Handler {

    private final WeakReference<SampleActivity> mSampleAct;

    private StaticHandler(SampleActivity act) {
        mSampleAct = new WeakReference<SampleActivity>(
                act);
    }

}

然后我将其初始化为

 public class SampleActivity extends Activity {
    private Handler myHandler = new StaticHandler(this) {
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            processTask(msg.obj);
        }
    };
}

我想知道我的Handler即myHandler是否仍会泄漏Context,我怎么能确定它不会泄漏?

1 个答案:

答案 0 :(得分:2)

使用WeakReference绝对是避免内存泄漏的明智方法。代码在上下文中看起来不错,但确保它不会泄漏内存的最佳方法是使用DDMS内存分析器。阅读更多:Memory Analyzer Tool in android?