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>

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。