旋转图像，但图像颜色较暗且图像变形
旋转图像，但图像颜色较暗且图像变形
提问于 2011-08-12 16:16:25
我想旋转图像更多的时间，但我不能在onDraw方法中做到这一点，我的代码是：
options = new BitmapFactory.Options();
options.inScaled = false;
options.inJustDecodeBounds = false;
options.inDither = false;
options.inScaled = false;
options.inPreferredConfig = Bitmap.Config.ARGB_8888;
public void setAddBmpImage(int rotate) {
byte[] by = getBitmapByte(rotatedBitmap);
Bitmap source = BitmapFactory.decodeByteArray(by, 0, by.length, options);
Bitmap bmpSephia = Bitmap.createBitmap(rotatedBitmap.getWidth(), rotatedBitmap.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bmpSephia);
canvas.rotate(rotate);
canvas.drawBitmap(source, 0, 0, null);
rotatedBitmap= bmpSephia;
imageStartX = (screenWidth / 2 - rotatedBitmap.getWidth() / 2);
imageStartY = (screenHeight / 2 - rotatedBitmap.getHeight() / 2);
invalidate();
}通过图像旋转得很好，但是图像是变形的，很难看，你能告诉我为什么吗，并给我一个好的方法，谢谢
回答 2
Stack Overflow用户
发布于 2011-08-12 17:31:13
尝试使用setAntiAlias(true)
Canvas canvas = new Canvas(bmpSephia);
canvas.rotate(rotate);
Paint paint = new Paint();
paint.setAntiAlias(true);
canvas.drawBitmap(source, 0, 0, paint);或
BitmapDrawable bmdraw = new BitmapDrawable(bmpSephia);
bmdraw.setAntiAlias(true);
Canvas canvas = new Canvas(bmdraw.getBitmap());
canvas.rotate(rotate);Stack Overflow用户
发布于 2011-08-13 10:59:03
我已经使用了@user7777方法，并修改了Paint paint = new Paint()；paint.setAntiAlias(真)；然后旋转图像的中心旋转，图像变形也发生了很小的变化，我看着rotate image in around its center point in canvas
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/7037321
复制相关文章
相似问题
腾讯云开发者
