Android-掷骰子

本文主要是介绍Android-掷骰子，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！

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;@Overrideprotected 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() {@Overridepublic void onClick(View v) {//判断线程是否存在if (thread != null&&isStop == true){isStop = false;}handler = new Handler(){@Overridepublic 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() {@Overridepublic 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() {@Overridepublic 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() {@Overridepublic 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"><ImageViewandroid: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" /><ImageViewandroid: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" /><Buttonandroid: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" /><Buttonandroid: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" /><Buttonandroid: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" /><ImageViewandroid: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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