android中handler使用应该注意的问题（解决由handler引起的OOM内存泄漏）

 /**********************************以下代码解决了handler有可能造成的内存泄漏***************************************************/
    /**
     * 创建静态内部类
     */
    private class MyHandler extends Handler{
        //持有弱引用HandlerActivity,GC回收时会被回收掉.
        private final WeakReference<ReplyDetailsActivity> mActivty;
        public MyHandler(ReplyDetailsActivity activity){
            mActivty =new WeakReference<ReplyDetailsActivity>(activity);
        }
        @Override
        public void handleMessage(Message msg) {
            ReplyDetailsActivity activity=mActivty.get();
            super.handleMessage(msg);
            if(activity!=null){
            }
        }
    }
    //执行相应的业务逻辑
    private final Runnable myRunnable = new Runnable() {
        @Override
        public void run() {
            //执行我们的业务逻辑
            if (sumPages>1){
                for (int i = 2; i <=sumPages ; i++) {
                    getReplyDetails(String.valueOf(i));
                }
            }
        }
    };