ios 中长按图片或者二维码，保存图片到手机的方法
Posted 雅尘恋
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self.imageView = [[UIImageView alloc]init];
self.imageView.frame = CGRectMake(30, titleLabel.height+30, self.neirongView.width-60, 170);
self.imageView.contentMode=UIViewContentModeScaleAspectFit;
[self.imageView setImageWithURL:[NSURL URLWithString:_ImageUrl]];
[self.neirongView addSubview:self.imageView];
self.imageView.tag = 1234;
// self.imageView.backgroundColor =Table_BGColor;
self.imageView.userInteractionEnabled =YES;
UILongPressGestureRecognizer*longpress=[[UILongPressGestureRecognizer alloc]initWithTarget:self action:@selector(imageClick)];
//判定为长按手势 需要的时间
longpress.minimumPressDuration = 1;
[self.imageView addGestureRecognizer:longpress];
-（void）imageClick{
UIImageView *myImageView = (UIImageView *)[self viewWithTag:1234];
UIImageWriteToSavedPhotosAlbum(myImageView.image, self, @selector(image:didFinshSavingWithError:contextInfo:), nil);
}
// 保存图片错误提示方法
- (void)image:(UIImage *)image didFinshSavingWithError:(NSError *)error contextInfo:(void *)contextInfo
{
NSString *mes = nil;
if (error != nil) {
mes = @"保存图片失败";
} else {
mes = @"保存图片成功";
}
[self makeToast:mes];
[NSTimer scheduledTimerWithTimeInterval:0.8f target:self selector:@selector(fadeOut) userInfo:nil repeats:NO];
}
- (void)fadeOut{
[UIView animateWithDuration:.35 animations:^{
self.alpha = 0.0;
}completion:^(BOOL finished) {
if (finished){
[self removeFromSuperview];
}
}];
}
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