一、代码图
二、代码
package com.example.administrator.myapplication;
import android.os.Handler;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toast.makeText(this, "延时3秒之前!", Toast.LENGTH_SHORT).show();
//测试延时执行Java
new Handler().postDelayed(new Runnable(){
public void run() {
//延时之后执行的任务
toast();
}
}, 3000);//延时3秒
}
//延时之后执行的任务
protected void toast(){
Toast.makeText(this, "延时3秒之后!", Toast.LENGTH_SHORT).show();
}
}