Andriod使用多线程实现轮播图片的代码实现

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" tools:context="com.example.administrator.chinesezodiacapplication.MainActivity"> <ImageView  android:id="@+id/imgNet"  android:layout_width="match_parent"  android:layout_height="0dp"  android:layout_weight="1"  android:src="@drawable/zi"  /> <LinearLayout  android:layout_width="match_parent"  android:layout_height="wrap_content"  android:orientation="horizontal">  <Button   android:id="@+id/btnStart"   android:layout_width="0dp"   android:layout_weight="1"   android:layout_height="wrap_content"   android:text="开始播放"   android:textSize="16dp"   />  <Button   android:id="@+id/btnPause"   android:layout_width="0dp"   android:layout_weight="1"   android:layout_height="wrap_content"   android:text="暂停播放"   android:textSize="16dp"   /> </LinearLayout></LinearLayout>

public class MainActivity extends AppCompatActivity { private Button btnStart; private Button btnPause; private ImageView imageView; private Thread thread; private Handler handler; private int MSG_IMG_CHANGE = 1001; private boolean isPause = true; private String url1 ="https://qqpublic.qpic.cn/qq_public/0/0-2366261503-87FFA35D0792FEC1048083429D12687E/900"; private String url2 ="https://qqpublic.qpic.cn/qq_public/0/0-3097962509-F7CFDDBDE07DAFAC9568FE9ABFE7153F/900"; private String url3 ="https://qqpublic.qpic.cn/qq_public/0/0-2851260680-186F3C52C3DDCB6BBAEE05AEF83D89DA/900?tp=webp"; private String url4 ="https://qqpublic.qpic.cn/qq_public/0/0-2738303735-B0FD9ABA222886FCFA325D1AD4DB6156/900?tp=webp"; private String url5 ="https://qqpublic.qpic.cn/qq_public/0/0-2776144047-CD42FE909EDD232753D51C54329D7BA6/900?tp=webp"; private String url6 ="https://qqpublic.qpic.cn/qq_public/0/0-2628537209-CFBA5C4C446CC492775303478F5825A2/900?tp=webp"; private String url7 ="https://qqpublic.qpic.cn/qq_public/0/0-3079871717-6B0B52BDE99EB32E481F049C077A3E6D/900?tp=webp"; private String url8 ="https://qqpublic.qpic.cn/qq_public/0/0-2906573180-BB6E88099D4DB7C27354591D8620A6BB/900?tp=webp"; private String url9 ="https://qqpublic.qpic.cn/qq_public/0/0-2365621724-14715472ACEA17237F988207A7EA862F/900?tp=webp"; private String url10 ="https://qqpublic.qpic.cn/qq_public/0/0-2362096419-A1371DB9F39E23B07061E1E4D5E4B995/900?tp=webp"; private String url11 ="https://qqpublic.qpic.cn/qq_public/0/0-2473426908-4C9010D824EF29E08BF20C6E32D3502A/900?tp=webp"; private String url12="https://qqpublic.qpic.cn/qq_public/0/0-3067218096-F5A001F06E9D0C9B91E15DB4DFF5FB7B/900?tp=webp"; private String[] imgUrls ={url1,url2,url3,url4,url5,url6,url7,url8,url9,url10,url11,url12}; private int index = 0; @Override protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.activity_main);  initViews();  initThread();  initHandler(); } private void initHandler() {  handler = new Handler(new Handler.Callback() {   @Override   public boolean handleMessage(Message message) {    if(message.what ==MSG_IMG_CHANGE){     Glide.with(MainActivity.this).load(imgUrls[message.arg1]).into(imageView);     return true;    }    return false;   }  }); } private void initThread() {  new Thread(new Runnable(){   @Override   public void run() {    while (true){     if(!isPause){      index =(index+1)%imgUrls.length;      Message msg = Message.obtain();      msg.what = MSG_IMG_CHANGE;      msg.arg1 =index;      handler.sendMessage(msg);     }     try {      Thread.sleep(2000);     } catch (InterruptedException e) {      e.printStackTrace();     }    }   }  }).start(); } private void initViews() {  initImageView();  initButton(); } private void initButton() {  btnStart = (Button) findViewById(R.id.btnStart);  btnStart.setOnClickListener(new View.OnClickListener() {   @Override   public void onClick(View view) {    isPause = false;   }  });  btnPause = (Button) findViewById(R.id.btnPause);  btnPause.setOnClickListener(new View.OnClickListener() {   @Override   public void onClick(View view) {    isPause = true;   }  }); } private void initImageView() {  imageView = (ImageView) findViewById(R.id.imgNet); }}