Unable to add window token null is not valid is your activity running

莫名其妙的报错

 

错误原因是不在主线程调用了弹窗方法

 

解决方法很简单

 

创建Handler

    private Handler mHandler = new Handler() {
        public void handleMessage(android.os.Message msg) {
            switch (msg.what) {
                case REFRESH_COMPLETE:
                    ObServernotice.getInstance().notifyObserver(211,1,"",null);
//todo...在这里调用弹窗
                    break;
            }
        }
    };

子线程调用mHandler

mHandler.sendEmptyMessageDelayed(REFRESH_COMPLETE, 1000);