本文介绍了Bitmap.getPixels()中的IllegalArgumentException的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我想使用getPixels()将数据从位图复制到int[]，这是我当前的代码:
I'd like to copy the data from a Bitmap into an int[] using getPixels(), this is my current code:
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]);
}
但是它引发了异常:
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)
有什么想法吗?我只是将y参数指定为0.
Any ideas? I just specified the y param as 0.
推荐答案
您已经改变了宽度和高度.
You have your width and hight switched.
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，int)
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