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876天前public static Bitmap getBitmapBySimpleSize(Object object, float width, |
float height) { |
if (null == object) { |
return null; |
} |
BitmapFactory.Options options = new BitmapFactory.Options(); |
options.inJustDecodeBounds = true; |
// 通过这个bitmap获取图片的宽和高 |
Bitmap bitmap = BitmapFactory.decodeFile(object.toString(), options); |
if (options.outWidth > width) { |
int scale = (int) (options.outWidth / width); |
// 如果按照宽度缩放比例导致高度小于原定高度，则按照高度的缩放比例来缩放 |
if (options.outHeight / scale < height) { |
scale = (int) (options.outHeight / height); |
} |
// Logger.e( "HongLi" , "options.outWidth1:" + options.outWidth + |
// ";options.outHeight:" + options.outHeight ); |
scale = scale <= 0 ? 1 : scale; |
options.inSampleSize = scale; |
options.outWidth = options.outWidth / options.inSampleSize; |
options.outHeight = options.outHeight / options.inSampleSize; |
// Logger.e( "HongLi" , "options.outWidth2:" + options.outWidth + |
// ";options.outHeight:" + options.outHeight ); |
} |
setBitmapNormalOptions(options); |
// 注意这次要把options.inJustDecodeBounds 设为 false,这次图片是要读取出来的。 |
bitmap = BitmapFactory.decodeFile(object.toString(), options); |
return bitmap; |
} |
private static void setBitmapNormalOptions(Options options) { |
if (null == options) { |
return; |
} |
options.inJustDecodeBounds = false; |
options.inPurgeable = true; |
options.inInputShareable = true; |
options.inPreferredConfig = Bitmap.Config.ARGB_8888; |
} |
by: 发表于：2018-01-02 10:00:13 顶(1) | 踩(1) 回复
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