图片相关

需要引两个第三方文件

#import"UIImageView+WebCache.h"

#import"UIImage+GIF.h"

//    [self.imageView sd_setImageWithURL:[NSURL URLWithString:@"http://v.juhe.cn/movie/picurl?2583181"]];

//    self.imageView.image = [UIImage sd_animatedGIFNamed:@"动态图"];//可以显示动态图

//创建一个

UIActionSheet*sheet = [[UIActionSheetalloc]initWithTitle:@"选择图像"delegate:selfcancelButtonTitle:@"取消"destructiveButtonTitle:nilotherButtonTitles:@"从相册选取",nil];

[sheetshowInView:self.view];

self.imageView.userInteractionEnabled=YES;

UILongPressGestureRecognizer*longPress = [[UILongPressGestureRecognizeralloc]initWithTarget:selfaction:@selector(longPress:)];

[self.imageViewaddGestureRecognizer:longPress];

}

- (void)longPress:(UILongPressGestureRecognizer*)longPress{

//    NSLog(@"测试");

//判断手势刚开始

if(longPress.state==UIGestureRecognizerStateBegan) {

UIImageWriteToSavedPhotosAlbum(self.imageView.image,nil,nil,nil);//将图片吸入本地相册中

}

}

- (void)actionSheet:(UIActionSheet*)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex{

if(buttonIndex ==0) {

UIImagePickerController*picker = [[UIImagePickerControlleralloc]init];

//设置代理人

//这个地方很特殊,这个代理人执行两套协议,需要签订两个协议

picker.delegate=self;

picker.allowsEditing=YES;

//让他显示出来,用模态

[selfpresentViewController:pickeranimated:YEScompletion:^{

}];

}

}

#pragma mark -点击choose之后,可以选中当前的图片,并且返回让图片显示在imageView上

- (void)imagePickerController:(UIImagePickerController*)picker didFinishPickingMediaWithInfo:(NSDictionary*)info{

//隐藏的效果就取消了,所以,我们需要手动添加dismiss的方法

[selfdismissViewControllerAnimated:YEScompletion:^{

} ];

NSLog(@"%@", info);

//从返回的字典对象info中提取image

UIImage*image = info[UIImagePickerControllerEditedImage];

self.imageView.image= image;

}