Android实现九宫格拼图游戏

import android.app.Activity;
import android.app.AlertDialog;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.View;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.TextView;
public class MainActivity extends Activity{
 private ImageButton button00,button01,button02,button10,button11,button12,button20,button21,button22;
 private Button buttonrestart;
 private TextView textView;
 private int Imagex = 3;
 private int Imagey = 3;
 private int imgCount = Imagex * Imagey;
 private int length = imgCount;
 private int blankSwap = length - 1;
 private int blankImgid = R.id.btn_02x02;// 初始化时候空白区域的按钮id
 private int time;
 private boolean timeswitch = true;
 // 声明一个图片数组的下标数组，随机排列这个数组
 private int[] imageIndex = new int[length];
 private int[] image = { R.mipmap.img_xiaoxiong_00x00, R.mipmap.img_xiaoxiong_00x01, R.mipmap.img_xiaoxiong_00x02, R.mipmap.img_xiaoxiong_01x00,
   R.mipmap.img_xiaoxiong_01x01, R.mipmap.img_xiaoxiong_01x02, R.mipmap.img_xiaoxiong_02x00, R.mipmap.img_xiaoxiong_02x01,
   R.mipmap.img_xiaoxiong_02x02, };
 Handler handler = new Handler() {
  // 为了更新时间用handler更新,其实就是textView.settext(时间)
  public void handleMessage(Message msg){
   if (msg.what == 1) {
    textView.setText("时间：" + time);
    if (timeswitch){
     time++;
     handler.sendEmptyMessageDelayed(1,1000);
    }
   }
  };
 };
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  // 初始化这些控件
  button00 = (ImageButton) findViewById(R.id.btn_00x00);
  button01 = (ImageButton) findViewById(R.id.btn_00x01);
  button02 = (ImageButton) findViewById(R.id.btn_00x02);
  button10 = (ImageButton) findViewById(R.id.btn_01x00);
  button11 = (ImageButton) findViewById(R.id.btn_01x01);
  button12 = (ImageButton) findViewById(R.id.btn_01x02);
  button20 = (ImageButton) findViewById(R.id.btn_02x00);
  button21 = (ImageButton) findViewById(R.id.btn_02x01);
  button22 = (ImageButton) findViewById(R.id.btn_02x02);
  textView = (TextView) findViewById(R.id.text_time);
  buttOnrestart= (Button) findViewById(R.id.btn_restart);
  handler.sendEmptyMessageDelayed(1,1000);
  random();
 }
 // 监听方法
 private void random() {
  timeswitch = true;
  for (int i = 0; i