1 package com.lixu.caipiao;  2   3 import android.app.Activity;  4 import android.os.Bundle;  5 import android.view.View;  6 import android.view.View.OnClickListener;  7 import android.widget.Button;  8 import android.widget.EditText;  9  10 public class MainActivity extends Activity implements OnClickListener { 11     Button btn1; 12     Button btn2; 13     Button btn3; 14     EditText et1; 15     EditText et2; 16     EditText et3; 17     StringBuffer sb; 18     StringBuffer sb2; 19     StringBuffer sb3; 20  21     @Override 22     protected void onCreate(Bundle savedInstanceState) { 23         super.onCreate(savedInstanceState); 24         setContentView(R.layout.activity_main); 25  26         btn1 = (Button) findViewById(R.id.btn1); 27         btn2 = (Button) findViewById(R.id.btn2); 28         btn3 = (Button) findViewById(R.id.btn3); 29         et1 = (EditText) findViewById(R.id.et1); 30         et2 = (EditText) findViewById(R.id.et2); 31         et3 = (EditText) findViewById(R.id.et3); 32         btn1.setOnClickListener(this); 33         btn2.setOnClickListener(this); 34         btn3.setOnClickListener(this); 35     } 36  37     @Override 38     public void onClick(View v) { 39         switch (v.getId()) { 40         case R.id.btn1: 41             sb = new StringBuffer(); 42             shuang(); 43             et1.setText(sb); 44             break; 45         case R.id.btn2: 46             sb2 = new StringBuffer(); 47             daletou(); 48             et2.setText(sb2); 49             break; 50         case R.id.btn3: 51             sb3 = new StringBuffer(); 52             qixing(); 53             et3.setText(sb3); 54             break; 55  56         default: 57             break; 58         } 59  60     } 61  62     public void shuang() { 63         int[] a = new int[7]; 64         int i = 0; 65         while (i < 6) { 66             int b = (int) (Math.random() * 33) + 1; 67             boolean temp = true; 68             for (int m = 0; m < a.length - 1; m++) { 69                 if (a[m] == b) { 70                     temp = false; 71                 } 72             } 73  74             if (!temp) { 75                 continue; 76             } 77             a[i] = b; 78             i++; 79         } 80         for (int l = 0; l < a.length - 1; l++) { 81             for (int h = 0; h < a.length - 1; h++) { 82                 if (a[l] < a[h]) { 83                     int temp = a[l]; 84                     a[l] = a[h]; 85                     a[h] = temp; 86                 } 87             } 88         } 89         int k = (int) (Math.random() * 16) + 1; 90         a[6] = k; 91         for (int n : a) { 92             sb.append(n + ","); 93         } 94     } 95  96     public void daletou() { 97         int[] a = new int[7]; 98         int i = 0; 99         while (i < 5) {100             int b = (int) (Math.random() * 35) + 1;101             boolean temp = true;102             for (int e = 0; e < a.length - 2; e++) {103                 if (a[e] == b) {104                     temp = false;105                 }106             }107             if (!temp) {108                 continue;109             }110             a[i] = b;111             i++;112         }113         for (int m = 0; m < a.length - 2; m++) {114             for (int n = m + 1; n < a.length - 2; n++) {115                 if (a[m] > a[n]) {116                     int temp1 = a[m];117                     a[m] = a[n];118                     a[n] = temp1;119                 }120             }121         }122         while (i > 4 && i < 7) {123             int k = (int) (Math.random() * 12) + 1;124             boolean temp2 = true;125             for (int e = 5; e < 7; e++) {126                 if (a[e] == k) {127                     temp2 = false;128                 }129             }130             if (!temp2) {131                 continue;132             }133             a[i] = k;134             i++;135         }136         for (int m = 5; m < 7; m++) {137             for (int n = m + 1; n < 7; n++) {138                 if (a[m] > a[n]) {139                     int temp1 = a[m];140                     a[m] = a[n];141                     a[n] = temp1;142                 }143             }144         }145         for (int n : a) {146             sb2.append(n + ",");147         }148     }149 150     public void qixing() {151         int[] a = new int[7];152         for (int j = 0; j < 7; j++) {153             int b = (int) (Math.random() * 10);154             a[j] = b;155         }156         for (int n : a) {157             sb3.append(n + ",");158         }159 160     }161 }

xml文件：

1 
     
       8  9     
      15 16     
      24 25     
      32 33 34     
      42 43     
      52 53     
      61 
     

运行效果图：