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安卓小游戏 2048 新手练手项目 完整代码（含注释）

最编程 2024-08-15 10:14:04
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看了极客的安卓2048的开发教程，大概了解了一下思路，然后自己就开始写了。后来发现这个设计思路不是太好，不方便加移动动画，就只加了创建卡片和合并的动画，不过用来练手还可以。

游戏截图如下：
在这里插入图片描述
如果想拷贝到本地运行的话，注意修改和包名相关的地方
或者在创建工程的时候按照以下命名：

项目名： Game2048
包名： pers.hurric.game2048

AndroidManifest.xml

仅需设置screenOrientation

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="pers.hurric.game2048">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity"
            android:screenOrientation="portrait">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

activity_main.xml

<?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">
    
    <TextView
        android:id="@+id/textScore"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/score"
        android:textColor="@color/colorPrimary"
        android:textSize="24sp"
        android:textStyle="bold"
        app:layout_constraintBottom_toTopOf="@+id/guideline4"
        app:layout_constraintEnd_toStartOf="@+id/guideline2"
        app:layout_constraintStart_toStartOf="@+id/guideline6"
        app:layout_constraintTop_toTopOf="@+id/guideline3" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/guideline2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        app:layout_constraintGuide_percent="0.5" />

    <Button
        android:id="@+id/buttonReplay"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/button_replay"
        android:textColor="@android:color/holo_blue_light"
        app:layout_constraintBottom_toTopOf="@+id/guideline4"
        app:layout_constraintEnd_toStartOf="@+id/guideline7"
        app:layout_constraintStart_toStartOf="@+id/guideline2"
        app:layout_constraintTop_toTopOf="@+id/guideline3" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/guideline3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintGuide_percent="0.12" />

    <TextView
        android:id="@+id/textHighestScore"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="@string/highest_score"
        android:textColor="@android:color/holo_purple"
        android:textSize="18sp"
        android:textStyle="italic"
        app:layout_constraintBottom_toTopOf="@+id/guideline3"
        app:layout_constraintEnd_toStartOf="@+id/guideline7"
        app:layout_constraintStart_toStartOf="@+id/guideline2"
        app:layout_constraintTop_toTopOf="parent" />

    <pers.hurric.game2048.GameView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        app:layout_constraintBottom_toTopOf="@+id/guideline5"
        app:layout_constraintEnd_toStartOf="@+id/guideline7"
        app:layout_constraintStart_toStartOf="@+id/guideline6"
        app:layout_constraintTop_toTopOf="@+id/guideline4" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/guideline4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintGuide_percent="0.26" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/guideline5"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintGuide_percent="0.9" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/guideline6"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        app:layout_constraintGuide_percent="0.05109489" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/guideline7"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        app:layout_constraintGuide_percent="0.95" />
</androidx.constraintlayout.widget.ConstraintLayout>

string.xml

<resources>
    <string name="app_name">Game2048</string>
    <string name="score">Score : 0</string>
    <string name="highest_score">Highest Score : 0</string>
    <string name="button_replay">Restart</string>
</resources>

color.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <color name="colorPrimary">#008577</color>
    <color name="colorPrimaryDark">#00574B</color>
    <color name="colorAccent">#D81B60</color>
    <color name="gameViewBackgroundColor">#D2B48C</color>
    <color name="backgroundColor0">#DEB887</color>
    <color name="textColor0">#00000000</color>
    <color name="textColor2">#333300</color>
    <color name="textColor4">#333300</color>
    <color name="textColorCommon">#FFFAFA</color>
    <color name="backgroundColor2">#FDF5E6</color>
    <color name="backgroundColor4">#FFE4B5</color>
    <color name="backgroundColor8">#FFE4C4</color>
    <color name="backgroundColor16">#FFDAB9</color>
    <color name="backgroundColor32">#FF7F50</color>
    <color name="backgroundColor64">#FF4500</color>
    <color name="backgroundColor128">#FF8C00</color>
    <color name="backgroundColor256">#FFD700</color>
    <color name="backgroundColor512">#9ACD32</color>
    <color name="backgroundColor1024">#483D8B</color>
    <color name="backgroundColor2048">#4B0082</color>
    <color name="backgroundColorBiggerThan2048">#000000</color>
</resources>

MainActivity.java

package pers.hurric.game2048;

import androidx.appcompat.app.AppCompatActivity;

import android.content.SharedPreferences;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.KeyEvent;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    private final String FILE_NAME = "MyData";
    private final String HIGHEST_SCORE = "highest_score";

    private TextView textScore;
    private TextView textHighestScore;
    private Button buttonReplay;

    private int score = 0;
    private int highestScore = 0;

    public static MainActivity mainActivity;

    public MainActivity(){
        mainActivity = this;
    }

    public void addScore(int score) {
        this.score += score;
        textScore.setText("Score : " + this.score);
        //更新最高分
        updateHighestScore(this.score);
    }

    private void updateHighestScore(int score){
        if(score > highestScore){
            highestScore = score;
            textHighestScore.setText("HighestScore : " + score);
			//存储最高分
            SharedPreferences shp = getSharedPreferences(FILE_NAME, MODE_PRIVATE);
            SharedPreferences.Editor editor = shp.edit();

            editor.putInt(HIGHEST_SCORE, highestScore);
            editor.apply();
        }
    }

    public void clearScore(){
        score = 0;
        textScore.setText("Score : " + 0);
    }

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        textScore = findViewById(R.id.textScore);
        textHighestScore = findViewById(R.id.textHighestScore);
        buttonReplay = findViewById(R.id.buttonReplay);

		//读取最高分
        SharedPreferences shp = getSharedPreferences(FILE_NAME, MODE_PRIVATE);
        highestScore = shp.getInt(HIGHEST_SCORE, 0);
        textHighestScore.setText("HighestScore : " + highestScore);

        buttonReplay.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                GameView.gameView.replayGame();
            }
        });
    }

    private boolean isExit = false;

    class ExitHandler extends Handler{
        @Override
        public void handleMessage(Message msg) {
            super.handleMessage(msg);
            if(msg.what == 0){
                isExit = false;//修改状态为退出
            }
        }

    };

    ExitHandler mHandler = new ExitHandler();

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if(keyCode == KeyEvent.KEYCODE_BACK){
            if(!isExit){
                isExit = true;
                Toast.makeText(this, "再按一次退出游戏", Toast.LENGTH_SHORT).show();
                //延迟更改状态信息
                mHandler.sendEmptyMessageDelayed(0, 2000);
            }
            else{
                finish();
            }
        }
        return false;
    }
}

GameView.java

自定义游戏面板

package pers.hurric.game2048;

import android.content.Context;
import android.util.AttributeSet;
import android.util.DisplayMetrics;
import android.view.MotionEvent;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.
						

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