只修改MainActivity.java部分的代码:
package com.ming.puke; import java.util.ArrayList; import java.util.Random; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.ImageView; import android.widget.Toast; public class MainActivity extends Activity { private Button btnplayagian;// 再玩一次 private boolean isopened = false;// 判断是否已开牌 private int[] pks = { R.drawable.p01, R.drawable.p02, R.drawable.p03 };// 存放3张扑克的值 private ArrayList<ImageView> pkimages = new ArrayList<ImageView>();// 存放3张扑克的体 protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); pkimages.add((ImageView) findViewById(R.id.puke1)); pkimages.add((ImageView) findViewById(R.id.puke2)); pkimages.add((ImageView) findViewById(R.id.puke3)); for (int i = 0; i < pkimages.size(); i++) { pkimages.get(i).setOnClickListener(l); } btnplayagian = (Button) findViewById(R.id.btnplayagian); btnplayagian.setOnClickListener(l); randomPuke(); } OnClickListener l = new OnClickListener() { public void onClick(View v) { if (v.getId() == R.id.btnplayagian) { randomPuke(); } else { if (!isopened) {// 如果牌还没开才能开牌 for (int i = 0; i < pkimages.size(); i++) { pkimages.get(i).setImageResource(pks[i]); if (i != pkimages.indexOf(v)) {// 将玩家没选择的牌面以灰暗效果处理 pkimages.get(i).setAlpha(100);// 设置透明度,取值范围为0~255,数值越小越透明。 } } Toast.makeText( // 显示开牌结果 MainActivity.this, R.drawable.p01 == pks[pkimages.indexOf(v)] ? "恭喜你猜对了" : "遗憾你猜错了", Toast.LENGTH_SHORT).show(); isopened = true; } } } }; /** 洗牌 */ public void randomPuke() { for (int i = 0; i < pkimages.size(); i++) {// 随机替换牌的顺序(并将洗好的牌翻到背面) pkimages.get(i).setImageResource(R.drawable.p04); int item = new Random().nextInt(3);// 抽出第item张牌 pkimages.get(i).setAlpha(255);// 初始化选中状态 pks[item] = pks[0] + 0 * (pks[0] = pks[item]);// 将第item张牌与第1张牌替换 } isopened = false; } }