如何更改位圖的像素顏色？

我有一個位圖對象。當我使用getpixel（）作爲位圖，並在setPixel之後爲該位圖對象使用時，像素值（顏色）不會改變。我使用imageview在背景圖像上填充顏色。主要問題是，我不能在同一區域的imageview上爲顏色填充顏色。當我在imageview上填充顏色時，那些區域不能用於填充另一種顏色。意思是我不更新imageview的填充顏色區域。下面是我的源代碼：如何更改位圖的像素顏色？

enter image description here

public static int DARK_PINK = Color.argb(255, 255, 51, 255); 
    public static int LIGHT_YELLOW = Color.argb(255, 255, 230, 102); 
    public static int DARK_MARUN = Color.argb(255, 148, 66, 50); 
    public static int LIGHT_MARUN = Color.argb(255, 186, 123, 68); 
    public static int RED = Color.argb(255, 252, 20, 20); 
    public static int LIGHT_BLUE = Color.argb(255, 102, 255, 255); 
    public static int DARK_BLUE = Color.argb(255, 70, 78, 202); 
    public static int LIGHT_GREEN = Color.argb(255, 190, 255, 91); 
    public static int DARK_GREEN = Color.argb(255, 15, 230, 0); 
    public static int JAMBLI = Color.argb(255, 123, 0, 230); 
    public static int ORANGE = Color.argb(255, 255, 187, 50); 
    public static int BLACK = Color.argb(255, 7, 5, 0); 
    public static int GRAY = Color.argb(255, 129, 128, 127); 
    public static int PINK_RED = Color.argb(255, 255, 4, 139); 
    public static int NEAVYBLUE = Color.argb(255, 51, 204, 255); 
    public static int ADVANCE_GREEN = Color.argb(255, 102, 255, 204); 

@Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 

     requestWindowFeature(Window.FEATURE_NO_TITLE); 
     getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, 
       WindowManager.LayoutParams.FLAG_FULLSCREEN); 
     getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 

     setContentView(R.layout.activity_main); 

Bundle extras = getIntent().getExtras(); 
     byte[] byteArray = extras.getByteArray("picture"); 

     bmp = BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length); 


     bitmap = bmp.copy(Bitmap.Config.ARGB_8888, true); 
     canvas = new Canvas(bitmap); 
     paint = new Paint(); 
     paint.setColor(DARK_PINK); 
     paint.setAntiAlias(true); 
     paint.setDither(true); 
     paint.setStrokeWidth(30); 
     paint.setStyle(Paint.Style.STROKE); 
     paint.setStrokeJoin(Paint.Join.ROUND); 
     paint.setStrokeCap(Paint.Cap.ROUND); 
     paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_OVER)); 
     // paint = new Paint(Paint.DITHER_FLAG); 
     paths.add(path); 
     path = new Path(); 

     image.setImageBitmap(bitmap); 

     image.setOnTouchListener(this); 


@Override 
    public void onClick(View v) { 
    switch (v.getId()) { 

     case R.id.btn_color_one: { 
    int pixel = DARK_PINK; 

       bitmap.setPixel(x, y, pixel); 
       if(pixel==DARK_PINK){ 
        pixel = LIGHT_YELLOW; 
        bitmap.setPixel(x, y, pixel); 
        canvas = new Canvas(bitmap); 

       } 

       else{ 

        Toast.makeText(getApplicationContext(), "Not Changed", 2).show(); 

       } 
} 
} 
}); 
}

來源

2014-09-13 jack

嘗試給它一個RGB色號這樣

myBitmap.setPixel(x, y, Color.rgb(45, 127, 0));

來源

2014-09-13 11:35:15

無我不是這一行的代碼的成功。 – jack 2014-09-13 11:44:43

我不能改變以前的像素的顏色，我不知道如何做到這一點。因爲我嘗試了很多方法來改變像素值而不是成功。 – jack 2014-09-13 11:46:20

你可以添加你所有的代碼嗎？ – 2014-09-13 11:51:11

如何更改位圖的像素顏色？

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