runOnUiThread.java

package com.example.androidthreadtest;

import android.app.Activity;
import android.os.Bundle;
import android.widget.Button;
import android.widget.TextView;

import butterknife.BindView;
import butterknife.ButterKnife;
import butterknife.OnClick;

/**
 * 作者： andli
 * 时间： 2017/11/1 18:17
 * 描述： 通过runOnUiThread改变TextView的值
 */
public class MainActivity extends Activity {

    @BindView(R.id.change_text)
    Button changeText;

    @BindView(R.id.text)
    TextView text;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        ButterKnife.bind(this);

        changeText.setText("通过runOnUiThread改变TextView的值");


    }

    @OnClick(R.id.change_text)
    public void onViewClicked() {
        new MyThread().start();
    }

    /**
     * 通过 runOnUiThread 线程，更新TextView
     */
    class MyThread extends Thread {
        @Override
        public void run() {

            runOnUiThread(new Runnable() {
                @Override
                public void run() {

                    // 延迟操作500毫秒
                    try {
                        Thread.sleep(500);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }

                    text.setText("runOnUiThread异步操作");
                }
            });
        }
    }

}