//等比縮放
- (UIImage*)scaleImage:(UIImage*)imagetoScale:(float)scaleSize {
? ? UIGraphicsBeginImageContext(CGSizeMake(image.size.width * scaleSize, image.size.height * scaleSize));
? ? [imagedrawInRect:CGRectMake(0,0, image.size.width* scaleSize, image.size.height* scaleSize)];
? ? UIImage *scaledImage = UIGraphicsGetImageFromCurrentImageContext();
? ? UIGraphicsEndImageContext();
? ? returnscaledImage;
}
//自定義大小
- (UIImage*)reSizeImage:(UIImage*)imagetoSize:(CGSize)reSize {
? ? UIGraphicsBeginImageContext(CGSizeMake(reSize.width, reSize.height));
? ? [imagedrawInRect:CGRectMake(0,0, reSize.width, reSize.height)];
? ? UIImage *reSizeImage = UIGraphicsGetImageFromCurrentImageContext();
? ? UIGraphicsEndImageContext();
? ? returnreSizeImage;
}
//UIView轉(zhuǎn)image
-(UIImage*)captureView:(UIView*)theView {
? ? CGRectrect = theView.frame;
? ? UIGraphicsBeginImageContext(rect.size);
? ? CGContextRef context = UIGraphicsGetCurrentContext();
? ? [theView.layerrenderInContext:context];
? ? UIImage *img = UIGraphicsGetImageFromCurrentImageContext();
? ? UIGraphicsEndImageContext();
? ? returnimg;
}
//合并圖片
- (UIImage*)addImage:(UIImage*)image1toImage:(UIImage*)image2{
? ? UIGraphicsBeginImageContext(CGSizeMake(image2.size.width, image2.size.height));
? ? [image2drawInRect:CGRectMake(0,0, image2.size.width, image2.size.height)];
? ? [image1drawInRect:CGRectMake(0,image2.size.height-100, image1.size.width, image1.size.height)];
? ? UIImage *resultingImage = UIGraphicsGetImageFromCurrentImageContext();
? ? UIGraphicsEndImageContext();
? ? return? resultingImage;
}
// ?http://www.reibang.com/p/6874e6c4fec6
