1、图片的压缩
封装类方法
- + (UIImage*)imageWithImageSimple:(UIImage*)image scaledToSize:(CGSize)newSize
- {
- // Create a graphics image context
- UIGraphicsBeginImageContext(newSize);
- // Tell the old image to draw in this new context, with the desired
- // new size
- [image drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];
- // Get the new image from the context
- UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();
- // End the context
- UIGraphicsEndImageContext();
- // Return the new image.
- return newImage;
- }
- //屏幕截图并压缩
- UIImage *snapshot = [UIImage imageWithCGImage:[AppDelegate screenShots].CGImage scale:1 orientation:UIImageOrientationLeft];
- _updataImg =[AppDelegate imageWithImageSimple:snapshot scaledToSize:CGSizeMake(snapshot.size.width/3, snapshot.size.height/3)];
- -(void)savetoLocal
- {
- _moreVC.hidden =YES;
- UIImage * saveimg=[self saveImage];
- UIImageWriteToSavedPhotosAlbum(saveimg, self, @selector(imageSavedToPhotosAlbum:didFinishSavingWithError:contextInfo:), nil);
- }
- -(UIImage*)saveImage{
- UIGraphicsBeginImageContext(CGSizeMake(self.view.bounds.size.width, self.view.bounds.size.height - 20));//保存self.view上的内容
- [self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
- UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
- UIGraphicsEndImageContext();
- return viewImage;
- }
- - (void)imageSavedToPhotosAlbum:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(voidvoid *)contextInfo
- {
- NSString *message = @"呵呵";
- if (!error) {
- message = @"成功保存到相册";
- }else
- {
- message = [error description];
- }
- NSLog(@"message is %@",message);
- }
来源: http://www.phpxs.com/code/1005574/