使用指紋如何激活比較功能？

Question

我試圖做一些比較手指塗料應用程序中的2位圖。我首先將第一個位圖加載到一個2d數組中，然後我想從另一個數組中加載另一個輸出位圖並比較兩個位圖。我的代碼不起作用，我不知道應該在哪裏編輯。比較功能在用戶按下選項菜單中的「比較」選項後立即啓動。請幫幫我。

public class MainActivity extends GraphicsActivity 
    { 

boolean check = false; 


@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(new MyView(this)); 

    mPaint = new Paint();                  
    mPaint.setAntiAlias(true);           
    mPaint.setDither(true);            
    mPaint.setColor(Color.RED);           
    mPaint.setStyle(Paint.Style.STROKE);         
    mPaint.setStrokeJoin(Paint.Join.ROUND);        
    mPaint.setStrokeCap(Paint.Cap.ROUND);        
    mPaint.setStrokeWidth(20); 
} 

private Paint mPaint; 

public class MyView extends View { 
    Bitmap mBitmap; 
    Bitmap bitmap = BitmapFactory.decodeResource(getResources(), R.drawable.c_1); 
    Bitmap bitmap2; 
    private Canvas mCanvas; 
    private Path mPath; 
    private Paint mBitmapPaint; 

    int w1 = bitmap.getWidth(); 
    int h1 = bitmap.getHeight(); 

    int [][] array = new int [w1][h1]; 
    int b=0; 
    int c=0; 
    int k=0; 
    int i, j; 
    int l=0; 
    View content = this; 


    { 
     for(int j = 0;j< w1; j++){ 
      for(int i = 0;i< h1; i++,k++){ 
       array[j][i]= bitmap.getPixel(j, i); 
       if(bitmap.getPixel(j, i)== 100); 
       { 
        b++; 
       } 

      } 
     } 
     System.out.println("numbers of gray:" + b);  

    } 


    public MyView(Context c) {            
     super(c); 

     mPath = new Path(); 
     mBitmapPaint = new Paint(Paint.DITHER_FLAG); 
     content.setDrawingCacheEnabled(true); 
     content.setDrawingCacheQuality(View.DRAWING_CACHE_QUALITY_HIGH); 

} 

    @Override 
    public void onSizeChanged(int w, int h, int oldw, int oldh){ 
     super.onSizeChanged(w, h, oldw, oldh); 
     mBitmap = Bitmap.createBitmap(w, h, Bitmap.Config.ARGB_8888); 
     mCanvas = new Canvas(mBitmap); 
    } 


    @Override 
    protected void onDraw(Canvas canvas) { 

     canvas.drawColor(Color.WHITE); 

     canvas.drawBitmap(bitmap, 0, 0, null); 

     canvas.drawBitmap(mBitmap, 0, 0, mBitmapPaint); 

     canvas.drawPath(mPath, mPaint); 

     bitmap2 = content.getDrawingCache(); 
    } 




    private float mX, mY; 
    private static final float TOUCH_TOLERANCE = 4; 

    private void touch_start(float x, float y) { 
      mPath.reset(); 
      mPath.moveTo(x, y); 
      mX = x; 
      mY = y; 

     } 
    private void touch_move(float x, float y) { 
     float dx = Math.abs(x - mX); 
     float dy = Math.abs(y - mY); 
     if (dx >= TOUCH_TOLERANCE || dy >= TOUCH_TOLERANCE) { 
      mPath.quadTo(mX, mY, (x + mX)/2, (y + mY)/2); 
      mX = x; 
      mY = y; 
      } 
    } 
    private void touch_up() { 
     mPath.lineTo(mX, mY); 
     mCanvas.drawPath(mPath, mPaint); 
     mPath.reset(); 
    } 

    @Override 
    public boolean onTouchEvent(MotionEvent event) { 
     float x = event.getX(); 
     float y = event.getY();   

     System.out.println("Coordinates:" + x + "," + y); 

    switch (event.getAction()) { 
      case MotionEvent.ACTION_DOWN: 
       touch_start(x, y); 
       invalidate(); 
       break; 
      case MotionEvent.ACTION_MOVE: 
       touch_move(x, y); 
       invalidate(); 
       break; 
      case MotionEvent.ACTION_UP: 
       touch_up(); 
       invalidate(); 
       break; 
    }        

    return true;  

    } 

    private void compare(Boolean check){ 
    if(check == true) 
     { 

      int w2 = bitmap2.getWidth(); 
      int h2 = bitmap2.getHeight(); 
      System.out.println("Width and Height of the product:" + w2 + "," + h2); 

      int [][] array1 = new int [w2][h2];    
      {    
       for(int j1 = 0;j1< w2; j1++){ 
        for(int i1 = 0;i1< h2; i1++,l++){ 
         array1[j1][i1]= bitmap2.getPixel(j1, i1); 
         if(array[j1][i1]== 100 && array1[j1][i1] == Color.RED); 
         { 
          c++; 
         } 

        } 
       } 
       System.out.println("numbers pixels touched:" + c);  
      } 
      int d=(b-c)/b*100; 

      Toast t = Toast.makeText(getBaseContext(), "Completion :" + d + "%", Toast.LENGTH_SHORT); 
      t.show(); 

     } 
    } 
} 

private static final int CLEAR_MENU_ID = Menu.FIRST; 
private static final int COMPARE_ID = Menu.FIRST + 1; 

public boolean onCreateOptionsMenu(Menu menu) { 
    super.onCreateOptionsMenu(menu); 

    menu.add(0, CLEAR_MENU_ID, 0, "Clear ALL"); 
    menu.add(0, COMPARE_ID, 0, "Compare"); 

return true; 
    } 

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 

    switch (item.getItemId()) { 
     case CLEAR_MENU_ID: 
      setContentView(new MyView(this)); 
      check = false; 
      return true; 
     case COMPARE_ID: 
      check = true; 
      return true; 
    } 
      return super.onOptionsItemSelected(item); 
    } 
} 

Answer 1

你不打電話比較（）的任何地方。

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 

    switch (item.getItemId()) { 
     case CLEAR_MENU_ID: 
      setContentView(new MyView(this)); 
      check = false; 
      return true; 
     case COMPARE_ID: 
      check = true; 
      compare(check); 
      return true; 
     default: 
      break; 
    } 

    return super.onOptionsItemSelected(item); 

} 

我看不到「check」變量的用途，但我認爲你在其他地方使用它。