猜拳小游戏

阶段1：进行猜拳小游戏的布局

               

其代码如下：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:background="@drawable/ba" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:padding="@dimen/padding_medium"
        android:text="@string/choose"
        tools:context=".MainActivity" />
    <RadioGroup
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal">
        <RadioButton 
            android:text="石头"
            android:id="@+id/stone"
            android:checked="true"/>
        <RadioButton 
            android:text="剪刀"
            android:id="@+id/scissors"/>
        <RadioButton 
            android:text="布"
            android:id="@+id/cloth"/>
    </RadioGroup>
    <Button 
        android:id="@+id/click"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="出拳" />
</LinearLayout>

阶段2：编写电脑类和玩家类

电脑类：

package com.lks.model;

public class Computer {

	public int show(){
		int quan;
		quan=(int) (Math.random()*10);
		if(quan<=2){
			quan=1;
		}else if(quan<=5){
			quan=2;
		}else{
			quan=3;
		}
		switch(quan){
		case 1:System.out.println("电脑出拳：石头");break;
		case 2:System.out.println("电脑出拳：剪刀");break;
		case 3:System.out.println("电脑出拳：布");break;
		}
		return quan;
	}
}

玩家类：

package com.lks.model;

public class Player {
	public int guess(String quan){
		int num=0;
		if(quan=="石头"){
			num=1;
		}else if(quan=="剪刀"){
			num=2;
		}else if(quan=="布"){
			num=3;
		}
		return num;
	}
}

阶段3：编写猜拳游戏类，判定输赢

package com.lks.littlegame;

import com.lks.model.Computer;
import com.lks.model.Player;

import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RadioButton;

public class MainActivity extends Activity {

	private RadioButton stone;
	private RadioButton scissors;
	private RadioButton cloth;
	private Button clickButton;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        stone=(RadioButton) findViewById(R.id.stone);
        scissors=(RadioButton) findViewById(R.id.scissors);
        cloth= (RadioButton) findViewById(R.id.cloth);
        clickButton=(Button) findViewById(R.id.click);
        
        clickButton.setOnClickListener(new OnClickListener() {
			@Override
			public void onClick(View v) {
				String choose="";
				if(stone.isChecked()){
					choose="石头";
				}
				if(scissors.isChecked()){
					choose="剪刀";
				}
				if(cloth.isChecked()){
					choose="布";
				}
				Computer computer=new Computer();
				Player player=new Player();
				int a=computer.show();
				int b=player.guess(choose);
				String show="";
				if(a==1&&b==3||a==2&&b==1||a==3&&b==2){
					show="玩家 赢";
				}else if(a==1&&b==1||a==2&&b==2||a==3&&b==3){
					show="平局";
				}else if(a==3&&b==1||a==1&&b==2||a==2&&b==3){
					show="电脑 赢";
				}
							}
		});
    }

阶段4：页面跳转传值

新建一个Activity,命名为GuessActivity.在layout中自动生成activity_guess.xml.其代码为：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent" 
    android:background="@drawable/ba">

    <TextView
        android:id="@+id/result"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:padding="@dimen/padding_medium"
        tools:context=".GuessActivity" />
</RelativeLayout>

在MainActivity中嵌入代码：

Intent intent=new Intent();
				intent.setClass(MainActivity.this, GuessActivity.class);
				Bundle bundle=new Bundle();
				bundle.putString("choose", choose);
				bundle.putInt("a",a);
				bundle.putString("show", show);
				intent.putExtras(bundle);
				startActivity(intent);

在GuessActivity中接收MainActivity所传的值：

package com.lks.littlegame;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.widget.TextView;

public class GuessActivity extends Activity {
	
    private TextView result;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_guess);
        result=(TextView) findViewById(R.id.result);
        Bundle bundle = this.getIntent().getExtras();
        String choose = bundle.getString("choose");
        int a=bundle.getInt("a");
        String show=bundle.getString("show");
        String fist="";
        if(a==1){
			fist="石头";
		}else if(a==2){
			fist="剪刀";
		}else if(a==3){
			fist="布";
		}
        result.setText("玩家："+choose+"\tVS\t"+"电脑："+fist+"\n"+show);
    }

结果显示：