小程序：彩票机选神器 ！

  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 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
 2     xmlns:tools="http://schemas.android.com/tools"
 3     android:id="@+id/RelativeLayout1"
 4     android:layout_width="match_parent"
 5     android:layout_height="match_parent"
 6     android:orientation="vertical"
 7     tools:context="com.lixu.caipiao.MainActivity" >
 8 
 9     <EditText
10         android:id="@+id/et1"
11         android:layout_width="210dp"
12         android:layout_height="50dp"
13         android:hint="等待输入" 
14         android:background="@drawable/round"/>
15 
16     <EditText
17         android:id="@+id/et2"
18         android:layout_width="210dp"
19         android:layout_height="50dp"
20         android:layout_below="@id/et1"
21         android:hint="等待输入" 
22         android:background="@drawable/round"
23         />
24 
25     <EditText
26         android:id="@+id/et3"
27         android:layout_width="210dp"
28         android:layout_height="50dp"
29         android:layout_below="@id/et2"
30         android:hint="等待输入" 
31         android:background="@drawable/round"/>
32 
33 
34     <Button
35         android:id="@+id/btn1"
36         android:layout_width="wrap_content"
37         android:layout_height="wrap_content"
38         android:layout_alignParentRight="true"
39         android:layout_alignParentTop="true"
40         android:text="双色球机选" 
41         android:background="@drawable/round"/>
42 
43     <Button
44         android:id="@+id/btn2"
45         android:layout_width="wrap_content"
46         android:layout_height="wrap_content"
47         android:layout_alignBaseline="@+id/et2"
48         android:layout_alignBottom="@+id/et2"
49         android:layout_alignParentRight="true"
50         android:text="大乐透机选" 
51         android:background="@drawable/round"/>
52 
53     <Button
54         android:id="@+id/btn3"
55         android:layout_width="wrap_content"
56         android:layout_height="wrap_content"
57         android:layout_alignParentRight="true"
58         android:layout_below="@+id/btn2"
59         android:text="七星彩机选" 
60         android:background="@drawable/round"/>
61 RelativeLayout>

运行效果图：

转载于:https://www.cnblogs.com/labixiaoxin/p/4975922.html