拋出：IllegalArgumentException在Bitmap.getPixels（）

Question

我想將數據從一個位圖複製到使用getPixels()的int[]，這是我當前的代碼：

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]); 
} 

但它拋出一個異常：

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) 

有沒有想法？我只是指定y參數爲0.

Answer 1

你有你的寬度和高切換。

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

我認爲在這段代碼中存在拼寫錯誤。試試這個：

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