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Android实现掷骰子效果

2020年06月23日  | 移动技术网IT编程  | 我要评论

本文实例为大家分享了android实现掷骰子效果的具体代码，供大家参考，具体内容如下

利用handler接受子线程的消息完成骰子点数的不断更替

演示

start:开始游戏
stop:停止游戏
recover:重置色子到初始状态

代码

package com.example.homeworkten;

import androidx.annotation.nonnull;
import androidx.appcompat.app.appcompatactivity;

import android.os.bundle;
import android.os.handler;
import android.os.message;
import android.view.view;
import android.widget.button;
import android.widget.imageview;
import android.widget.toast;

public class mainactivity extends appcompatactivity {
 private imageview imageview1,imageview2,imageview3;
 private button button1,button2,button3;
 private imageview[] imageviews;
 private handler handler;
 //子线程
 private thread thread;
 //记录每个色子的点数
 private int number[];
 //色子的总点数
 private int count;
 //volatile修饰符用来保证其它线程读取的总是该变量的最新的值
 public volatile boolean isstop = false;
 @override
 protected void oncreate(bundle savedinstancestate) {
 super.oncreate(savedinstancestate);
 setcontentview(r.layout.activity_main);
 number = new int[3];
 imageview1 = findviewbyid(r.id.imageview1);
 imageview2 = findviewbyid(r.id.imageview2);
 imageview3 = findviewbyid(r.id.imageview3);
 button1 = findviewbyid(r.id.button1);
 button2 = findviewbyid(r.id.button2);
 button3 = findviewbyid(r.id.button3);
 imageviews = new imageview[]{imageview1,imageview2,imageview3};
 button1.setonclicklistener(new view.onclicklistener() {
  @override
  public void onclick(view v) {
  //判断线程是否存在
  if (thread != null&&isstop == true){
   isstop = false;
  }
  handler = new handler(){
   @override
   public void handlemessage(@nonnull message msg) {
   super.handlemessage(msg);
   for(int i = 0;i < 3;i++) {
    switch (number[i]) {
    case 1:
     imageviews[i].setimageresource(r.drawable.t1);
     break;
    case 2:
     imageviews[i].setimageresource(r.drawable.t2);
     break;
    case 3:
     imageviews[i].setimageresource(r.drawable.t3);
     break;
    case 4:
     imageviews[i].setimageresource(r.drawable.t4);
     break;
    case 5:
     imageviews[i].setimageresource(r.drawable.t5);
     break;
    case 6:
     imageviews[i].setimageresource(r.drawable.t6);
     break;
    }
   }
   }
  };
  thread = new thread(new runnable() {
   @override
   public void run() {
   while (!isstop) {
    message message = handler.obtainmessage();
    //总点数归零
    count = 0;
    for (int i = 0; i < 3; i++) {
    try {
     thread.sleep(50);
    } catch (interruptedexception e) {
     e.printstacktrace();
    }
    //生成随机数
    int random = (int) (math.random() * 6 + 1);
    number[i] = random;
    count += random;
    }
    handler.sendmessage(message);
   }
   }
  });
  thread.start();
  }
 });
 //停止掷筛子
 button2.setonclicklistener(new view.onclicklistener() {
  @override
  public void onclick(view v) {
  if(isstop == false) {
   isstop = true;
   try {
   //当子线程执行完以后才继续执行主线程
   thread.join();
   } catch (interruptedexception e) {
   e.printstacktrace();
   }
   //显示掷出的点数
   toast.maketext(mainactivity.this, "你掷的点数为" + count, toast.length_short).show();
  }else {
   toast.maketext(mainactivity.this, "请点击开始键进行掷色子", toast.length_short).show();
  }
  }
 });
 //将色子还原到初始状态
 button3.setonclicklistener(new view.onclicklistener() {
  @override
  public void onclick(view v) {
  if(isstop == true) {
   for (int i = 0; i < 3; i++) {
   imageviews[i].setimageresource(r.drawable.t1);
   }
  }else {
   toast.maketext(mainactivity.this, "请先停止游戏，再重新开始", toast.length_short).show();
  }
  }
 });
 }
}
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.constraintlayout 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"
 tools:context=".mainactivity">

 <imageview
 android:id="@+id/imageview1"
 android:layout_width="100dp"
 android:layout_height="80dp"
 android:layout_marginstart="10dp"
 android:layout_marginleft="10dp"
 android:layout_margintop="40dp"
 android:layout_marginend="10dp"
 android:layout_marginright="10dp"
 app:layout_constraintend_tostartof="@+id/imageview2"
 app:layout_constrainthorizontal_bias="0.482"
 app:layout_constraintstart_tostartof="parent"
 app:layout_constrainttop_totopof="parent"
 app:srccompat="@drawable/t1" />

 <imageview
 android:id="@+id/imageview2"
 android:layout_width="100dp"
 android:layout_height="80dp"
 android:layout_marginstart="10dp"
 android:layout_marginleft="10dp"
 android:layout_margintop="40dp"
 android:layout_marginend="10dp"
 android:layout_marginright="10dp"
 app:layout_constraintend_tostartof="@+id/imageview3"
 app:layout_constraintstart_toendof="@+id/imageview1"
 app:layout_constrainttop_totopof="parent"
 app:srccompat="@drawable/t1" />

 <button
 android:id="@+id/button1"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_marginstart="10dp"
 android:layout_marginleft="10dp"
 android:layout_margintop="40dp"
 android:layout_marginend="10dp"
 android:layout_marginright="10dp"
 android:text="start"
 app:layout_constraintend_tostartof="@+id/button2"
 app:layout_constraintstart_tostartof="parent"
 app:layout_constrainttop_tobottomof="@+id/imageview1" />

 <button
 android:id="@+id/button2"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_marginstart="10dp"
 android:layout_marginleft="10dp"
 android:layout_margintop="40dp"
 android:layout_marginend="10dp"
 android:layout_marginright="10dp"
 android:text="stop"
 app:layout_constraintend_tostartof="@+id/button3"
 app:layout_constraintstart_toendof="@+id/button1"
 app:layout_constrainttop_tobottomof="@+id/imageview2" />

 <button
 android:id="@+id/button3"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_marginstart="10dp"
 android:layout_marginleft="10dp"
 android:layout_margintop="40dp"
 android:layout_marginend="10dp"
 android:layout_marginright="10dp"
 android:text="recover"
 app:layout_constraintend_toendof="parent"
 app:layout_constraintstart_toendof="@+id/button2"
 app:layout_constrainttop_tobottomof="@+id/imageview3" />

 <imageview
 android:id="@+id/imageview3"
 android:layout_width="100dp"
 android:layout_height="80dp"
 android:layout_marginstart="10dp"
 android:layout_marginleft="10dp"
 android:layout_margintop="40dp"
 android:layout_marginend="10dp"
 android:layout_marginright="10dp"
 app:layout_constraintend_toendof="parent"
 app:layout_constraintstart_toendof="@+id/imageview2"
 app:layout_constrainttop_totopof="parent"
 app:srccompat="@drawable/t1" />

</androidx.constraintlayout.widget.constraintlayout>

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