iOS 圖片大小壓縮 圖片尺寸處理

標籤：

#pragma mark- 縮放圖片 對大小壓縮
+(UIImage *)scaleImage:(UIImage *)image toScale:(float)scaleSize
{
    //設定圖片尺寸
    UIGraphicsBeginImageContext(CGSizeMake(image.size.width*scaleSize,image.size.height*scaleSize));
    [image drawInRect:CGRectMake(0, 0, image.size.width * scaleSize, image.size.height *scaleSize)];
    UIImage *scaledImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    
    //對圖片包得大小進行壓縮
    NSData *imageData = UIImageJPEGRepresentation(scaledImage,0.0001);
    UIImage *m_selectImage = [UIImage imageWithData:imageData];
    return m_selectImage;
}

 

//這樣調用即可

        UIImage* original = [info objectForKey:UIImagePickerControllerOriginalImage];
        original = [HZSInstances scaleImage:original toScale:0.4];

 

iOS 圖片大小壓縮 圖片尺寸處理