handlerpost.java

package com.example.androidthreadtest;

import android.app.Activity;
import android.os.Bundle;
import android.os.Handler;
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Handler Post改变TextView的值");


    }

    @OnClick(R.id.change_text)
    public void onViewClicked() {

        Handler handler = new Handler();
        handler.post(new Runnable() {
            @Override
            public void run() {

                // 延迟500毫秒执行
                try {
                    Thread.sleep(500);
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
                
                text.setText("Handler Post");
            }
        });

    }


}