Android笔记之——线程

Java：

package com.example.test_ui_thread01;

import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.view.View;import android.view.animation.TranslateAnimation;import android.widget.Button;

public class MainActivity extends AppCompatActivity {

@Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        //为button1添加一个动画操作        Button button1 = (Button)findViewById(R.id.button1);        TranslateAnimation animation = new TranslateAnimation(0,150,0,0);        animation.setRepeatCount(30);        animation.setDuration(2000);        button1.setAnimation(animation);

Button button2 = (Button)findViewById(R.id.button2);        button2.setOnClickListener(new View.OnClickListener() {            @Override            public void onClick(View view) {                new Thread(new Runnable() {                    @Override                    public void run() {                        try {                            Thread.sleep(5000);                        } catch (InterruptedException e) {                            e.printStackTrace();                        }                    }                }).start();

}        });    }}XML：

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:id="@+id/activity_main"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context="com.example.test_ui_thread01.MainActivity">

<TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="Hello World!"        android:id="@+id/textView" />

<Button        android:text="Button"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_below="@+id/textView"        android:layout_alignParentLeft="true"        android:layout_alignParentStart="true"        android:layout_marginLeft="29dp"        android:layout_marginStart="29dp"        android:layout_marginTop="97dp"        android:id="@+id/button1" />

<Button        android:text="Button"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_below="@+id/button"        android:layout_alignLeft="@+id/button"        android:layout_alignStart="@+id/button"        android:layout_marginLeft="18dp"        android:layout_marginStart="18dp"        android:layout_marginTop="81dp"        android:id="@+id/button2" /></RelativeLayout>