view.post使用说明

  new Thread(new Runnable() {
            int i;
            @Override
            public void run() {
                //mTextView.setText("A change in text, thank you very much");
                while (true){
                    i++;
                    try {
                        sleep(1000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    //System.out.println(Thread.currentThread().getName());

                    //mTextView.setText(String.valueOf(i));
                    mTextView.post(new Runnable(){
                        @Override
                        public void run() {
                            mTextView.setText(String.valueOf(i));
                        }
                    });
                }

            }
        }).start();