抛出：IllegalArgumentException在Bitmap.getPixels（）

Question

我想将数据从一个位图复制到使用getPixels()的int[]，这是我当前的代码：

int[] pixels = new int[myBitmap.getHeight() * myBitmap.getWidth()]; 
myBitmap.getPixels(pixels, 0, myBitmap.getWidth(), 0, 0, 
     myBitmap.getHeight(), myBitmap.getWidth()); 

for(int i = 0; i < myBitmap.getHeight() * myBitmap.getWidth(); i++) { 
    Log.e(TAG, "pixel"+i+"" +pixels[i]); 
} 

但它抛出一个异常：

05-04 20:24:08.281: ERROR/AndroidRuntime(5700): Uncaught handler: thread main exiting due to uncaught exception 
05-04 20:24:08.296: ERROR/AndroidRuntime(5700): java.lang.IllegalArgumentException: y + height must be <= bitmap.height() 
05-04 20:24:08.296: ERROR/AndroidRuntime(5700):  at android.graphics.Bitmap.checkPixelsAccess(Bitmap.java:818) 
05-04 20:24:08.296: ERROR/AndroidRuntime(5700):  at android.graphics.Bitmap.getPixels(Bitmap.java:771) 
05-04 20:24:08.296: ERROR/AndroidRuntime(5700):  at com.tecmark.Jjilapp$TouchView.onDraw(Jjilapp.java:206) 

有没有想法？我只是指定y参数为0.

Answer 1

你有你的宽度和高切换。

myBitmap.getPixels(pixels, 0, myBitmap.getWidth(), 0, 0, myBitmap.getHeight(), myBitmap.getWidth());

VS

public void getPixels (int[] pixels, int offset, int stride, int x, int y, int width, int height) http://developer.android.com/reference/android/graphics/Bitmap.html#getPixels(int[], int, int, int, int, int, int)

Answer 2

我认为在这段代码中存在拼写错误。试试这个：

myBitmap.getPixels(pixels, 0, myBitmap.getWidth(), 0, 0, 
    myBitmap.getWidth(), myBitmap.getHeight());