我如何更改顏色調色板上的按鈕單擊顏色畫筆android

我正在使用具有調色板的基本顏料應用程序。每當我選擇一種顏色時，畫筆顏色應該改變。目前我的程序存在的問題是，在改變顏色時，我現有的繪圖顏色也會變爲現在的顏色。因此，我不能用不同的顏色繪製圖畫。我終於得到了最後一種顏色的圖像。我已經在下面給出了我的代碼。我如何更改顏色調色板上的按鈕單擊顏色畫筆android

Drawing.java

public class Drawing extends Activity { 
Paint fgPaintSel; 
public int height,width,i=0,counter=0; 
boolean flag=true; 
String image; 
Button bClear,bErase,bSave,b1,b2,b3,b4,b5,b6,b7,b8,b9,b10; 
//int check=0; 
Canvas c; 
TextView tvAlpha; 
LinearLayout draw; 
//private DrawingManager mDrawingManager=null; 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.drawing); 

    LinearLayout ll = (LinearLayout)findViewById(R.id.draw); 
    final DrawPanel drawingPanel = new DrawPanel(getApplicationContext()); 
    ll.addView(drawingPanel); 

    bClear=(Button) findViewById(R.id.bCLear1); 
    bErase=(Button) findViewById(R.id.bErase); 
    bSave=(Button) findViewById(R.id.bSave); 
    b1=(Button) findViewById(R.id.b1); 
    b2=(Button) findViewById(R.id.b2); 
    b3=(Button) findViewById(R.id.b3); 
    b4=(Button) findViewById(R.id.b4); 
    b5=(Button) findViewById(R.id.b5); 
    b6=(Button) findViewById(R.id.b6); 
    b7=(Button) findViewById(R.id.b7); 
    b8=(Button) findViewById(R.id.b8); 
    b9=(Button) findViewById(R.id.b9); 
    b10=(Button) findViewById(R.id.b10); 

b1.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View arg0) { 
      // TODO Auto-generated method stub 
      drawingPanel.paint.setColor(Color.BLACK); 
     } 
    }); 

b2.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View arg0) { 
      // TODO Auto-generated method stub 

     drawingPanel.paint.setColor(Color.rgb(51,181,229)); 
     } 
    }); 

b3.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View arg0) { 
      // TODO Auto-generated method stub 
      drawingPanel.paint.setColor(Color.rgb(153,51,204)); 
     } 
    }); 

b4.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View arg0) { 
      drawingPanel.paint.setColor(Color.rgb(204, 255, 0)); 
     } 
    }); 

b5.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View arg0) { 
      // TODO Auto-generated method stub 
      drawingPanel.paint.setColor(Color.rgb(255, 68, 68)); 
     } 
    }); 

b6.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View arg0) { 
      // TODO Auto-generated method stub 
      drawingPanel.paint.setColor(Color.rgb(204, 0, 0)); 
     } 
    }); 

b7.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View arg0) { 
      // TODO Auto-generated method stub 
      drawingPanel.paint.setColor(Color.rgb(153, 204, 0)); 
     } 
    }); 

b8.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View arg0) { 
      // TODO Auto-generated method stub 

      drawingPanel.paint.setColor(Color.rgb(253, 238, 0)); 
     } 
    }); 

b9.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View arg0) { 
      // TODO Auto-generated method stub 
      drawingPanel.paint.setColor(Color.rgb(255, 145, 175)); 
     } 
    }); 

b10.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View arg0) { 
      // TODO Auto-generated method stub 
      drawingPanel.paint.setColor(Color.rgb(139, 0, 139)); 
     } 
    }); 


    bErase.setOnClickListener(new View.OnClickListener() { 

     @Override 
     public void onClick(View arg0) { 
      // TODO Auto-generated method stub 

      drawingPanel.paint.setColor(Color.WHITE); 
     } 
    }); 


} 


public class DrawPanel extends View { 

public DrawPanel(Context context) { 
    super(context); 
    points = new ArrayList(); 
    strokes = new ArrayList(); 
    paint = createPaint(Color.BLACK, 8); 

} 

@Override 
public void onDraw(Canvas c){ 
    super.onDraw(c); 


    this.setBackgroundColor(Color.WHITE); 
    for(Object obj: strokes){ 
    drawStroke((ArrayList)obj, c); 
    } 

    drawStroke(points, c); 


    //c.drawLine((width/2),height,(width/2),0,fgPaintSel); 
} 

@Override 
public boolean onTouchEvent(MotionEvent event){ 
    if(event.getActionMasked() == MotionEvent.ACTION_MOVE){ 
    points.add(new Point((int)event.getX(), (int)event.getY())); 
    invalidate(); 
    } 

    if(event.getActionMasked() == MotionEvent.ACTION_UP){ 
    this.strokes.add(points); 
    points = new ArrayList(); 
    } 

    return true; 
} 

private void drawStroke(ArrayList stroke, Canvas c){ 

    /**/ 

    if (stroke.size() > 0) { 
    Point p0 = (Point)stroke.get(0); 
    for (int i = 1; i < stroke.size(); i++) { 
    Point p1 = (Point)stroke.get(i); 
    c.drawLine(p0.x, p0.y, p1.x, p1.y, paint); 
    p0 = p1; 
    } 
    } 
} 

private Paint createPaint(int color, float width){ 
    Paint temp = new Paint(); 
    temp.setStyle(Paint.Style.STROKE); 
    temp.setAntiAlias(true); 
    temp.setColor(color); 
    temp.setStrokeWidth(width); 
    temp.setStrokeCap(Cap.ROUND); 

    return temp; 
} 

private Paint paint; 
private ArrayList points; 
private ArrayList strokes; 
} 


}

drawing.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:orientation="vertical" 
    android:id="@+id/drawPanel1">" 

    <LinearLayout 
     android:layout_width="fill_parent" 
     android:layout_height="30sp" 
     android:orientation="horizontal" 
     android:weightSum="100"> 

    <Button 
     android:id="@+id/b1" 
     android:layout_width="fill_parent" 
     android:layout_height="30sp" 
     android:layout_weight="10" 
     android:background="#000000" /> 

    <Button 
     android:id="@+id/b2" 
     android:layout_width="fill_parent" 
     android:layout_height="30sp" 
     android:layout_weight="10" 
     android:background="#33B5E5" /> 

    <Button 
     android:id="@+id/b3" 
     android:layout_width="fill_parent" 
     android:layout_height="30sp" 
     android:layout_weight="10" 
     android:background="#9933CC" /> 

    <Button 
     android:id="@+id/b4" 
     android:layout_width="fill_parent" 
     android:layout_height="30sp" 
     android:layout_weight="10" 
     android:background="#CCFF00" /> 

    <Button 
     android:id="@+id/b5" 
     android:layout_width="fill_parent" 
     android:layout_height="30sp" 
     android:layout_weight="10" 
     android:background="#FF4444" /> 

    <Button 
     android:id="@+id/b6" 
     android:layout_width="fill_parent" 
     android:layout_height="30sp" 
     android:layout_weight="10" 
     android:background="#CC0000" /> 

    <Button 
     android:id="@+id/b7" 
     android:layout_width="fill_parent" 
     android:layout_height="30sp" 
     android:layout_weight="10" 
     android:background="#99CC00" /> 

    <Button 
     android:id="@+id/b8" 
     android:layout_width="fill_parent" 
     android:layout_height="30sp" 
     android:layout_weight="10" 
     android:background="#FDEE00" /> 

    <Button 
     android:id="@+id/b9" 
     android:layout_width="fill_parent" 
     android:layout_height="30sp" 
     android:layout_weight="10" 
     android:background="#FF91AF" /> 

    <Button 
     android:id="@+id/b10" 
     android:layout_width="fill_parent" 
     android:layout_height="30sp" 
     android:layout_weight="10" 
     android:background="#8B008B" /> 
</LinearLayout> 
<LinearLayout 
    android:layout_width="fill_parent" 
     android:layout_height="35sp" 
     android:orientation="horizontal" 
     android:weightSum="100" 
     > 

    <Button 
     android:id="@+id/bErase" 
     android:layout_width="fill_parent" 
     android:layout_height="30sp" 
     android:layout_weight="33" 
     android:text="ERASE" 
     android:layout_gravity="center" 
     android:gravity="center" 
     android:textSize="10sp" /> 

     <Button 
     android:id="@+id/bCLear1" 
     android:layout_width="fill_parent" 
     android:layout_height="30sp" 
     android:layout_weight="33" 
     android:text="CLEAR" 
     android:layout_gravity="center" 
     android:gravity="center" 
     android:textSize="10sp" /> 

     <Button 
     android:id="@+id/bSave" 
     android:layout_width="fill_parent" 
     android:layout_height="30sp" 
     android:layout_weight="33" 
     android:text="SAVE" 
     android:layout_gravity="center" 
     android:gravity="center" 
     android:textSize="10sp" 
     android:layout_marginRight="10sp" /> 

</LinearLayout> 
<LinearLayout android:layout_width="fill_parent" 
     android:layout_height="fill_parent" 
     android:orientation="horizontal" 
     android:id="@+id/draw"></LinearLayout> 
</LinearLayout>

來源

2013-11-21 Nikita Fernandes

我可以知道製作@rohit的編輯？ –

沒有硬編碼按鈕列表，考慮GridView（或自定義ViewGroup）+ Adapter + View.setTag
使用Bitmap用於存放塗漆，不要重漆一切，而onDraw，如果你w螞蟻支持「恢復」行動，拯救色彩搭配strokes

這裏：

public void onDraw(Canvas c) { 
    super.onDraw(c); 

    this.setBackgroundColor(Color.WHITE); 
    for(Object obj: strokes){ 
     drawStroke((ArrayList)obj, c); 
    } 

    drawStroke(points, c); 

    //c.drawLine((width/2),height,(width/2),0,fgPaintSel); 
}

您drawStroke再次提請一切

考慮使用Bitmap類，並在onTouchEvent上畫，如果你將不支持恢復。

或創建類似：

class DrawStep { 
    public int color; 
    public int width; 
    public ArrayList points; 
}

並保存List<DrawStep>代替ArrayList strokes

來源

2013-11-21 08:57:17 afpro

我很抱歉，但我是新來的android，並不理解你的變化。請幫忙。我得到了網格視圖的東西，但重新繪製的東西呢。提前致謝。 –

我如何更改顏色調色板上的按鈕單擊顏色畫筆android

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