java.lang.RuntimeException: Невозможно создать экземпляр активности

Question

Я начинаю проект игры для android, у меня есть 2 действия (mainactivity и Pvsp), а затем все действия, которые я описал ранее, я добавляю в манифест. но LogCat дать мне ошибку как этот

11-08 15:50:10.339: E/Trace(6221): error opening trace file: No such file or directory (2) 
11-08 15:50:10.339: V/ActivityThread(6221): com.rhas.skripsiletsgo white listed for hwui 
11-08 15:50:14.339: D/dalvikvm(6221): newInstance failed: no <init>() 
11-08 15:50:14.349: D/AndroidRuntime(6221): Shutting down VM 
11-08 15:50:14.359: W/dalvikvm(6221): threadid=1: thread exiting with uncaught exception (group=0x40a8e930) 
11-08 15:50:14.389: E/AndroidRuntime(6221): FATAL EXCEPTION: main 
11-08 15:50:14.389: E/AndroidRuntime(6221): java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{com.rhas.skripsiletsgo/com.rhas.skripsiletsgo.Pvsp}: java.lang.InstantiationException: can't instantiate class com.rhas.skripsiletsgo.Pvsp; no empty constructor 
11-08 15:50:14.389: E/AndroidRuntime(6221):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2223) 
11-08 15:50:14.389: E/AndroidRuntime(6221):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2357) 
11-08 15:50:14.389: E/AndroidRuntime(6221):  at android.app.ActivityThread.access$600(ActivityThread.java:153) 
11-08 15:50:14.389: E/AndroidRuntime(6221):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1247) 
11-08 15:50:14.389: E/AndroidRuntime(6221):  at android.os.Handler.dispatchMessage(Handler.java:99) 
11-08 15:50:14.389: E/AndroidRuntime(6221):  at android.os.Looper.loop(Looper.java:137) 
11-08 15:50:14.389: E/AndroidRuntime(6221):  at android.app.ActivityThread.main(ActivityThread.java:5259) 
11-08 15:50:14.389: E/AndroidRuntime(6221):  at java.lang.reflect.Method.invokeNative(Native Method) 
11-08 15:50:14.389: E/AndroidRuntime(6221):  at java.lang.reflect.Method.invoke(Method.java:511) 
11-08 15:50:14.389: E/AndroidRuntime(6221):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795) 
11-08 15:50:14.389: E/AndroidRuntime(6221):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562) 
11-08 15:50:14.389: E/AndroidRuntime(6221):  at dalvik.system.NativeStart.main(Native Method) 
11-08 15:50:14.389: E/AndroidRuntime(6221): Caused by: java.lang.InstantiationException: can't instantiate class com.rhas.skripsiletsgo.Pvsp; no empty constructor 
11-08 15:50:14.389: E/AndroidRuntime(6221):  at java.lang.Class.newInstanceImpl(Native Method) 
11-08 15:50:14.389: E/AndroidRuntime(6221):  at java.lang.Class.newInstance(Class.java:1319) 
11-08 15:50:14.389: E/AndroidRuntime(6221):  at android.app.Instrumentation.newActivity(Instrumentation.java:1054) 
11-08 15:50:14.389: E/AndroidRuntime(6221):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2214) 
11-08 15:50:14.389: E/AndroidRuntime(6221):  ... 11 more 
11-08 15:50:16.099: I/Process(6221): Sending signal. PID: 6221 SIG: 9 

тогда вот мой манифест

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.rhas.skripsiletsgo" 
    android:versionCode="1" 
    android:versionName="1.0" > 

    <uses-sdk 
     android:minSdkVersion="8" 
     android:targetSdkVersion="10" /> 

    <application 
     android:allowBackup="true" 
     android:icon="@drawable/ic_launcher" 
     android:label="@string/app_name" 
     android:theme="@style/AppTheme" > 

     <activity 
      android:name="com.rhas.skripsiletsgo.MainActivity" 
      android:label="@string/app_name" > 
      <intent-filter> 
       <action android:name="android.intent.action.MAIN" /> 

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

     <activity 
      android:name="com.rhas.skripsiletsgo.Pvsp" 
      android:label="@string/app_name">   
     </activity> 

    </application> 

</manifest> 

вот мой Project, не стесняйтесь для редактирования, анализа и т.д. извините за мой плохой английский. вся помощь/комментарии оценены.

EDIT: Вот класс Pvsp

package com.rhas.skripsiletsgo; 

import static com.rhas.skripsiletsgo.core.StoneColor.BLACK; 

import java.util.HashSet; 
import java.util.Set; 
import java.util.Timer; 
import java.util.TimerTask; 

import com.rhas.skripsiletsgo.StoneDrawable; 
import com.rhas.skripsiletsgo.core.KoRuleException; 
import com.rhas.skripsiletsgo.core.NoLibertiesException; 
import com.rhas.skripsiletsgo.core.SpaceTakenException; 
import com.rhas.skripsiletsgo.core.Game; 
import com.rhas.skripsiletsgo.core.GameState; 
import com.rhas.skripsiletsgo.core.Stone; 

import android.content.Context; 
import android.graphics.Canvas; 
import android.graphics.Rect; 
import android.util.AttributeSet; 
import android.view.MotionEvent; 
import android.view.ViewGroup; 
import android.widget.Toast; 

public class Pvsp extends ViewGroup{ 

    public Pvsp(Context context, AttributeSet attrs) { 
     super(context, attrs); 
     setKeepScreenOn(true); 

     stones = new Stone[game.getTableSize()][game.getTableSize()]; 
     blackStoneDrawable = new StoneDrawable.Black(); 
     whiteStoneDrawable = new StoneDrawable.White(); 
     gridDrawable = new GridDrawable(game.getTableSize()); 

     setGameState(game.getLastState()); 
     game.addListener(new GameListener()); 
    } 

    static final int MAX_DRAWN_CAPTURED_STONES = 16; 

    final static int PADDING = 3; 

    final GridDrawable gridDrawable; 

    final Rect rect = new Rect(); 

    final Stone[][] stones; 
    StoneDrawable blackStoneDrawable; 
    StoneDrawable whiteStoneDrawable; 

    long lastTouchMove = -1; 

    Game game; 

    GameState gameState; 

    int cellSize; 

    private boolean skipNextTouchUp; 

    void setGameState(GameState state){ 
     if(gameState != null){ 
      Set<Stone> prevStones = gameState.getStones(); 
      Set<Stone> newStones = state.getStones(); 
      Set<Stone> prevStonesM = new HashSet<Stone>(prevStones); 
      Set<Stone> newStonesM = new HashSet<Stone>(newStones); 

      prevStonesM.removeAll(newStones); 
      for(Stone stone : prevStonesM){ 
       stones[stone.getRow()][stone.getCol()] = null; 
      } 

      newStonesM.removeAll(prevStones); 
      for(Stone stone : newStonesM){ 
       stones[stone.getRow()][stone.getCol()] = stone; 
      } 
      invalidate(); 
     } 
     gameState = state; 
    } 

    private int getX(int row){ 
     int l = rect.left + cellSize/2 + PADDING; 
     int r = rect.right - cellSize/2 - PADDING; 
     return getCoord(row, l, r); 
    } 

    private int getY(int col){ 
     int t = rect.top + cellSize/2 + PADDING; 
     int b = rect.bottom + cellSize/2 - PADDING; 
     return getCoord(col, t, b); 
    } 

    private int getCoord(int i, int min, int max){ 
     return min + (max - min) * i/(game.getTableSize() - 1); 
    } 

    private int getRow(float y){ 
     return Math.round(0.5f + (y - PADDING)/(rect.bottom - rect.top - 2*PADDING) * game.getTableSize() - 1); 
    } 

    private int getCol(float x){ 
     return Math.round(0.5f + (x - PADDING)/(rect.right - rect.left - 2*PADDING) * game.getTableSize() - 1); 
    } 

    protected void onDraw(Canvas canvas){ 
     super.onDraw(canvas); 

     canvas.save(); 
     int p = PADDING + cellSize/2; 
     canvas.clipRect(p, p, rect.width() - p, rect.height() - p); 
     gridDrawable.draw(canvas); 
     canvas.restore(); 
     drawStones(canvas); 
     drawCapturedStones(canvas); 
     drawWhoseTurn(canvas); 
    } 

    private void drawStones(Canvas canvas) { 
     // TODO Auto-generated method stub 
     for(int i = 0; i < stones.length; i++){ 
      for(int j = 0; j < stones[i].length; j++){ 
       Stone stone = stones[i][j]; 
       if(stone == null) continue; 
       int x = getX(stone.getCol()); 
       int y = getY(stone.getRow()); 
       canvas.save(); 
       canvas.translate(x - cellSize/2, y - cellSize/2); 
       if(stone.getColor() == BLACK){ 
        blackStoneDrawable.draw(canvas); 
       }else{ 
        whiteStoneDrawable.draw(canvas); 
       } 
       canvas.restore(); 
      } 
     } 
    } 

    private void drawCapturedStones(Canvas canvas) { 
     // TODO Auto-generated method stub 
     int dx = PADDING + cellSize/2; 
     int dy = rect.height() + cellSize; 

     canvas.save(); 
     canvas.translate(dx, dy); 
     drawCapturedStones(canvas, gameState.getBlacksCaptured(), blackStoneDrawable, false); 
     canvas.restore(); 

     canvas.save(); 
     canvas.translate(canvas.getWidth() - dx - cellSize, dy); 
     drawCapturedStones(canvas, gameState.getWhitesCaptured(), whiteStoneDrawable, true); 
     canvas.restore(); 
    } 

    private void drawCapturedStones(Canvas canvas, int count, StoneDrawable drawable, boolean flip){ 
     if(count > MAX_DRAWN_CAPTURED_STONES){ 
      count = MAX_DRAWN_CAPTURED_STONES; 
     } 
     for(int i = 0; i < count; i++){ 
      int rowCol = Util.getCapturedRowCol(i); 
      int row = (rowCol/1000); 
      int col = rowCol % 1000; 

      if(flip){ 
       col = -col; 
      } 

      canvas.save(); 
      int x = col * cellSize; 
      int y = row * cellSize; 
      canvas.translate(x, y); 
      drawable.draw(canvas); 
      canvas.restore(); 
     } 
    } 

    private void drawWhoseTurn(Canvas canvas) { 
     // TODO Auto-generated method stub 
     int dx = 5 * cellSize + cellSize/2 + PADDING; 
     int dy = rect.height(); 
     canvas.save(); 
     StoneDrawable drawable; 
     if (gameState.getWhoseTurn() == BLACK) { 
      // Flip horizontally. 
      canvas.translate(rect.width() - dx - 2 * cellSize, dy); 
      drawable = blackStoneDrawable; 
     } else { 
      canvas.translate(dx, dy); 
      drawable = whiteStoneDrawable; 
     } 
     int oldSize = drawable.getSize(); 
     drawable.setSize(2 * cellSize); 
     drawable.draw(canvas); 
     drawable.setSize(oldSize); 
     canvas.restore(); 
    } 

    @Override 
    protected void onLayout(boolean changed, int l, int t, int r, int b) { 
     // TODO Auto-generated method stub 
     if (!changed) return; 
     rect.left = l; 
     rect.top = t; 
     rect.right = Math.min(r, b); 
     rect.bottom = Math.min(r, b); 

     cellSize = (rect.width() - 2 * PADDING)/game.getTableSize(); 
     blackStoneDrawable.setSize(cellSize); 
     whiteStoneDrawable.setSize(cellSize); 
    } 

    void skipNextTouchUp() { 
     this.skipNextTouchUp = true; 
    } 

    class PlaceStoneTimer extends Timer { 
    } 

    PlaceStoneTimer placeStoneTimer = new PlaceStoneTimer(); 

    class PlaceStoneTimerTask extends TimerTask { 
     @Override 
     public void run() { 
     gridDrawable.highlight(); 
     postInvalidate(); 
     } 
    } 

    @Override 
     public boolean onTouchEvent(MotionEvent event) { 
     int row = getRow(event.getY()); 
     int col = getCol(event.getX()); 
     gridDrawable.unhighlight(); 
     invalidate(); 
     if (row < 0 || row >= game.getTableSize() || col < 0 || col >= game.getTableSize()) { 
      return true; 
     } 
     switch (event.getAction()) { 
      case MotionEvent.ACTION_DOWN: 
      case MotionEvent.ACTION_MOVE: 
      if (gridDrawable.getHighlightedRow() == null) { 
       gridDrawable.prehighlight(row, col); 
       placeStoneTimer.schedule(new PlaceStoneTimerTask(), 50000); 
      } else if (gridDrawable.getHighlightedRow() != row 
       || gridDrawable.getHighlightedCol() != col) { 
       gridDrawable.prehighlight(row, col); 
       placeStoneTimer.cancel(); 
       placeStoneTimer.schedule(new PlaceStoneTimerTask(), 50000); 
      } 
      return true; 
      case MotionEvent.ACTION_UP: 
      if (skipNextTouchUp) { 
       skipNextTouchUp = false; 
       return true; 
      } 
      try { 
       game.makeTurnAt(row, col); 
      } catch (SpaceTakenException e) { 
       // Toast.makeText(getContext(), "This space is taken", 
       // Toast.LENGTH_SHORT).show(); 
      } catch (NoLibertiesException e) { 
       Toast.makeText(getContext(), "No liberty", Toast.LENGTH_SHORT).show(); 
      } catch (KoRuleException e) { 
       String msg = "Ko rule violation"; 
       if (e.getTurnsAgo() > 2) { 
       msg = "Super ko rule violation " + e.getTurnsAgo() + " turns ago"; 
       } 
       Toast.makeText(getContext(), msg, Toast.LENGTH_SHORT).show(); 
      } 
     } 
     return true; 
     } 

    private class GameListener implements com.rhas.skripsiletsgo.core.GameListener { 

     public void onStateAdvanced(GameState newState) { 
      setGameState(newState); 
     } 

     public void onGameReset() { 
      for (int row = 0; row < game.getTableSize(); row++) { 
      for (int col = 0; col < game.getTableSize(); col++) { 
       stones[row][col] = null; 
      } 
      } 
      removeAllViews(); 
     } 
     } 
} 

Answer 1

Эта ошибка приходит потому, что ваш класс Pvsp не является классом активности. вы сделали класс Pvsp индивидуальным макетом, поэтому теперь вам нужно сделать этот код:

1. Сделайте ставку Pvsp и настройте свой собственный pvsp. например.

class PvspActivity extends Activity{ 
onCreate(Bundle savedInstanceState){ 
setContentView(new Pvsp()); 
} 

} 

, а также не забудьте добавить эту деятельность в манифесте: -

<activity 
     android:name="com.rhas.skripsiletsgo.PvspActivity" 
     android:label="@string/app_name">   
    </activity> 

и удалить pvsp как активность в манифесте, потому что это не activity.let мне знать, если какой-либо вопрос arise.thanks

Answer 2

удалить

<activity 
     android:name="com.rhas.skripsiletsgo.Pvsp" 
     android:label="@string/app_name">   
</activity> 

с вашего манифеста. Pvsp не является активным пользователем