Tic Tac Toe Spiel App funktioniert nicht

Question

Ich möchte einfach Tic Tac Toe machen.
Jetzt habe ich diesen Code.
Hier klicke ich einfach auf einen Knopf und es wird X, und wenn ich 3 X in einer Reihe habe, kommt ein Toast, der "Game over" anzeigt.
Ich habe Os noch nicht eingestellt.

public class MainActivity extends AppCompatActivity { 
ImageButton[] imageButton = new ImageButton[8]; 
boolean[] isIt = new boolean[8]; 


@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
    imageButton [0] = (ImageButton) findViewById(R.id.imageButton7) ; 
    imageButton [1] = (ImageButton) findViewById(R.id.imageButton2) ; 
    imageButton [2] = (ImageButton) findViewById(R.id.imageButton3) ; 
    imageButton [3] = (ImageButton) findViewById(R.id.imageButton4) ; 
    imageButton [4] = (ImageButton) findViewById(R.id.imageButton5) ; 
    imageButton [5] = (ImageButton) findViewById(R.id.imageButton6) ; 
    imageButton [6] = (ImageButton) findViewById(R.id.imageButton10) ; 
    imageButton [7] = (ImageButton) findViewById(R.id.imageButton8) ; 
    imageButton [8] = (ImageButton) findViewById(R.id.imageButton9) ; 
    imageButton[0].setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      gunwo(0); 
      checkIt(); 
     } 
    }); 
    imageButton[1].setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      gunwo(1); 
      checkIt(); 
     } 
    }); 
    imageButton[2].setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      gunwo(2); 
      checkIt(); 
     } 
    }); 
    imageButton[3].setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      gunwo(3); 
      checkIt(); 
     } 
    }); 
    imageButton[4].setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      gunwo(4); 
      checkIt(); 
     } 
    }); 
    imageButton[5].setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      gunwo(5); 
      checkIt(); 
     } 
    }); 
    imageButton[6].setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      gunwo(6); 
      checkIt(); 
     } 
    }); 
    imageButton[7].setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      gunwo(7); 
      checkIt(); 
     } 
    }); 
    imageButton[8].setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      gunwo(8); 
      checkIt(); 
     } 
    }); 
} 
public void gunwo(int y) 
{ 
    if(!isIt[y]) 
    { 
     isIt[y] = true; 
     imageButton[y].setImageResource(R.drawable.trasfasd); 
    } 
} 

public void checkIt() 
{ 
    if (isIt[0] && isIt[1]&&isIt[2]){ 
     Toast.makeText(getApplicationContext(), "Game Over", Toast.LENGTH_LONG).show(); 
    } 
    else if(isIt[3]&&isIt[4]&&isIt[5]) 
    { 
     Toast.makeText(getApplicationContext(), "Game Over", Toast.LENGTH_LONG).show(); 
    } 
    else if(isIt[6]&&isIt[7]&&isIt[8]) 
    { 
     Toast.makeText(getApplicationContext(), "Game Over", Toast.LENGTH_LONG).show(); 
    } 
    else if(isIt[0]&&isIt[3]&&isIt[6]) 
    { 
     Toast.makeText(getApplicationContext(), "Game Over", Toast.LENGTH_LONG).show(); 
    } 
    else if(isIt[1]&&isIt[4]&&isIt[7]) 
    { 
     Toast.makeText(getApplicationContext(), "Game Over", Toast.LENGTH_LONG).show(); 
    } 
    else if(isIt[2]&&isIt[5]&&isIt[8]) 
    { 
     Toast.makeText(getApplicationContext(), "Game Over", Toast.LENGTH_LONG).show(); 
    } 
    else if(isIt[6]&&isIt[4]&&isIt[2]) 
    { 
     Toast.makeText(getApplicationContext(), "Game Over", Toast.LENGTH_LONG).show(); 
    } 
    else if(isIt[0]&&isIt[4]&&isIt[8]) 
    { 
     Toast.makeText(getApplicationContext(), "Game Over", Toast.LENGTH_LONG).show(); 
    } 
} 
} 

Compiler findet keinen Bug, aber wenn ich die App in der Emulator App öffne funktioniert nicht.

Hier ist meine LogCat:

09-24 14:56:27.899 2781-2781/com.holland.tictactoe E/AndroidRuntime: FATAL EXCEPTION: main 
                   Process: com.holland.tictactoe, PID: 2781 
                   java.lang.RuntimeException: Unable to start activity ComponentInfo{com.holland.tictactoe/com.holland.tictactoe.MainActivity}: java.lang.ArrayIndexOutOfBoundsException: length=8; index=8 
                    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2665) 
                    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726) 
                    at android.app.ActivityThread.-wrap12(ActivityThread.java) 
                    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477) 
                    at android.os.Handler.dispatchMessage(Handler.java:102) 
                    at android.os.Looper.loop(Looper.java:154) 
                    at android.app.ActivityThread.main(ActivityThread.java:6119) 
                    at java.lang.reflect.Method.invoke(Native Method) 
                    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886) 
                    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776) 
                    Caused by: java.lang.ArrayIndexOutOfBoundsException: length=8; index=8 
                    at com.holland.tictactoe.MainActivity.onCreate(MainActivity.java:28) 
                    at android.app.Activity.performCreate(Activity.java:6679) 
                    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118) 
                    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2618) 
                    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726)  
                    at android.app.ActivityThread.-wrap12(ActivityThread.java)  
                    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477)  
                    at android.os.Handler.dispatchMessage(Handler.java:102)  
                    at android.os.Looper.loop(Looper.java:154)  
                    at android.app.ActivityThread.main(ActivityThread.java:6119)  
                    at java.lang.reflect.Method.invoke(Native Method)  
                    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)  
                    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)  

.

Answer 1

Wenn Sie lernen, die logcat zu lesen, werden Sie

Caused by: java.lang.ArrayIndexOutOfBoundsException: length=8; index=8 
    at com.holland.tictactoe.MainActivity.onCreate(MainActivity.java:28) 

Hier erfahren Sie alle notwendigen Informationen, wirklich

Da Arrays Null indiziert imageButton [8] ist das neunte Element der sehen Array.

Sie nur mit 8

ImageButton[] imageButton = new ImageButton[8]; 
boolean[] isIt = new boolean[8]; 

initialisiert Es ist schwer, eine 3x3-Brett mit 8 Stück

ändern diese zu [9] zu erstellen, und Sie sollten wirklich eine Schleife hier

for (int i = 0; i < imageButton.length; i++) { 
    final int position = i; 
    imageButton[i].setOnClickListener(new View.OnClickListener() { 
     @Override 
     public void onClick(View v) { 
      gunwo(position); 
      checkIt(); 
     } 
    }); 
}