/**
*? 壓縮圖片到指定文件大小
*
*? @param image 目標(biāo)圖片
*? @param size? 目標(biāo)大?。ㄗ畲笾担?/p>
*
*? @return 返回的圖片文件
*/
- (NSData *)compressOriginalImage:(UIImage *)image toMaxDataSizeKBytes:(CGFloat)size{
NSData * data = UIImageJPEGRepresentation(image, 1.0);
CGFloat dataKBytes = data.length/1000.0;
CGFloat maxQuality = 0.9f;
CGFloat lastData = dataKBytes;
while (dataKBytes > size && maxQuality > 0.01f) {
maxQuality = maxQuality - 0.01f;
data = UIImageJPEGRepresentation(image, maxQuality);
dataKBytes = data.length / 1000.0;
if (lastData == dataKBytes) {
break;
}else{
lastData = dataKBytes;
}
}
