Android——猜數字小游戲

                      實作功能：總共分三個模式

MainActivity.java代碼如下：

public class MainActivity extends AppCompatActivity {
    private Button General,Diffculty,Hell;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        InitView();
        Listener();
    }
    private void InitView(){
        General = findViewById(R.id.general);
        Diffculty = findViewById(R.id.difficulty);
        Hell = findViewById(R.id.hell);
    }
    private void Listener(){
        OnClick onClick = new OnClick();
        General.setOnClickListener(onClick);
        Diffculty.setOnClickListener(onClick);
        Hell.setOnClickListener(onClick);
    }

    private class OnClick implements View.OnClickListener{

        @Override
        public void onClick(View v) {
            Intent intent = null;
            switch (v.getId()){
                case R.id.general:
                    intent = new Intent(MainActivity.this,General.class);
                    break;
                case R.id.difficulty:
                    intent = new Intent(MainActivity.this,Difficulty.class);
                    break;
                case R.id.hell:
                    intent = new Intent(MainActivity.this,Hell.class);
                    break;
            }
            startActivity(intent);
        }
    }
}

activity_main.xml:效果圖如下：

activity_main.xml:代碼如下：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="模式選擇"
        android:textSize="20sp"
        android:gravity="center"
        android:textColor="#000"/>
    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="#000"
        android:layout_marginTop="40dp"/>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:layout_marginTop="70dp">
    <Button
        android:id="@+id/general"
        android:layout_width="100dp"
        android:layout_height="wrap_content"
        android:text="普通模式(1-100)" />
    <Button
        android:id="@+id/difficulty"
        android:layout_width="100dp"
        android:layout_height="wrap_content"
        android:text="困難模式(1-1000)"
        android:layout_gravity="center"
        android:layout_marginLeft="60dp"/>
    <Button
        android:id="@+id/hell"
        android:layout_width="100dp"
        android:layout_height="wrap_content"
        android:text="地獄模式(1-10000)"
        android:layout_marginLeft="50dp"/>
    </LinearLayout>


</RelativeLayout>

建立三個活動分別為General，Difficulty，Hell,由于代碼相似，只展示普通模式的代碼，其余倆只更改隨機函式中的數值范圍即可
General.java代碼如下:

public class General extends AppCompatActivity {
    private EditText Number;
    private Button Submit;
    private TextView GuessNumberResult, GuessNumberTimes;
    private int intGuessNumber = 0;
    private int NumberOfGuesses = 0;
    private int RandomNumber = 0;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_general);
        Number = findViewById(R.id.Number);
        Submit = findViewById(R.id.submit);
        GuessNumberResult = findViewById(R.id.GuessNumberResult);
        GuessNumberTimes = findViewById(R.id.GuessNumberTimes);
        RandomNumber = (int) (Math.random()*(100-1+1));

        Submit.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(final View v) {
                String StrGuessNumber = Number.getText().toString();
                try{
                    intGuessNumber = Integer.parseInt(StrGuessNumber);
                }catch (NumberFormatException e)
                {
                    e.printStackTrace();
                }
                if (intGuessNumber < RandomNumber )
                {
                    NumberOfGuesses++;
                    GuessNumberResult.setVisibility(View.VISIBLE);
                    GuessNumberTimes.setVisibility(View.VISIBLE);
                    GuessNumberResult.setText("猜的數字偏小");
                    GuessNumberTimes.setText("猜測次數："+NumberOfGuesses);
                }
                if (intGuessNumber > RandomNumber )
                {
                    NumberOfGuesses++;
                    GuessNumberResult.setVisibility(View.VISIBLE);
                    GuessNumberTimes.setVisibility(View.VISIBLE);
                    GuessNumberResult.setText("猜的數字偏大");
                    GuessNumberTimes.setText("猜測次數："+NumberOfGuesses);
                }
                if (intGuessNumber == RandomNumber )
                {
                    NumberOfGuesses++;
                    GuessNumberResult.setVisibility(View.VISIBLE);
                    GuessNumberTimes.setVisibility(View.VISIBLE);
                    GuessNumberResult.setText("恭喜你，猜對了");
                    GuessNumberTimes.setText("猜測次數："+NumberOfGuesses);
                }
            }
        });
    }
}

activity_general.xml代碼如下：

<?xml version="1.0" encoding="utf-8"?>
<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"
    tools:context=".General"
    android:orientation="vertical">

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="普通模式"
        android:textSize="20sp"
        android:gravity="center"
        android:layout_marginTop="10dp"
        android:textColor="#000"/>
    <View
        android:layout_width="match_parent"
        android:layout_height="1dp"
        android:background="#000"
        android:layout_marginTop="10dp"/>
    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content">
        <TextView
            android:id="@+id/Tips"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Please enter the number you selected:"
            android:layout_marginTop="100dp"/>

        <EditText
            android:id="@+id/Number"
            android:layout_width="100dp"
            android:layout_height="40dp"
            android:layout_marginTop="90dp"
            android:layout_alignRight="@+id/Tips"
            android:layout_marginRight="50dp"/>
    </RelativeLayout>
    <Button
        android:id="@+id/submit"
        android:layout_width="100dp"
        android:layout_height="50dp"
        android:text="Submit"
        android:textAllCaps="false"
        android:layout_marginTop="30dp"
        android:layout_gravity="center"/>
    <TextView
        android:id="@+id/GuessNumberResult"
        android:layout_height="wrap_content"
        android:layout_width="match_parent"
        android:visibility="invisible"
        android:layout_marginTop="10dp"
        android:layout_gravity="center"
        android:gravity="center"
        android:textColor="#ff0000"/>
    <TextView
        android:id="@+id/GuessNumberTimes"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:visibility="invisible"
        android:layout_marginTop="20dp"
        android:layout_gravity="center"
        android:gravity="center"
        android:textColor="#ff0000"/>

</LinearLayout>

效果圖展示：