SDWebImage, setImageWithUrl не может показывать изображение на изображении View

Question

- (void)xuanquButtonClicked:(JohnButtonLong*)button 
{ 
    _picker = [[UIImagePickerController alloc] init]; 
    if (![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) { 
     JLActionManager * manager = [JLActionManager sharedInstance]; 
     [manager showAndHideHUDWithTitle:nil detailText:@"亲，您的相册无法打开" inView:self.view]; 
     return; 

    } 
    _picker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary; 
    _picker.allowsEditing = YES; 
    _picker.delegate = self; 
    [self presentViewController:_picker animated:YES completion:^{ 

    }]; 
} 

#pragma mark - UIIMagePickerController delegate Methods 
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker 
{ 

    [picker dismissViewControllerAnimated:YES completion:^{ 

    }]; 
    // 如果没有选取 使用默认头像 
    _strHeadPic = @""; 
} 

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info 
{ 
    [picker dismissViewControllerAnimated:YES completion:^{ 

    }]; 
    // 选取了某个头像 
    UIImage * image = [info objectForKey:UIImagePickerControllerOriginalImage]; 
    _img_touxiang.image = image; 
    //压缩图像 
    image = [self OriginImage:image scaleToSize:CGSizeMake(160, 160)]; 
    NSData * img_data = UIImageJPEGRepresentation(image, 0.5); 

    //进行base64编码 
    NSData * data = [GTMBase64 encodeData:img_data]; 
    _strHeadPic = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding]; 

} 

// 压缩成指定大小 
-(UIImage*) OriginImage:(UIImage *)image scaleToSize:(CGSize)size{ 

    UIGraphicsBeginImageContext(size); 

    // 绘制改变大小的图片 
    [image drawInRect:CGRectMake(0, 0, size.width, size.height)]; 
    // 从当前context中创建一个改变大小后的图片 
    UIImage* scaledImage = UIGraphicsGetImageFromCurrentImageContext(); 
    UIGraphicsEndImageContext();// 是当前的context出对战 

    // 返回新的改变大小后的图片 
    return scaledImage; 

} 

UnitMyInfo * myInfo = GetMyInfo; 
[_img_touxiang setImageWithURL:[NSURL URLWithString:BaseImgURL(myInfo.umi_URL)] placeholderImage:[UIImage imageNamed:@"default_headImg.jpg"]]; 

Answer 1

// First You have to get Url from Image then set url On SDWebImages. 

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingImage:(UIImage *)img editingInfo:(NSDictionary *)editingInfo 
{ 
    [picker dismissModalViewControllerAnimated:YES]; 
    NSURL *imagePath = [editingInfo objectForKey:@"UIImagePickerControllerReferenceURL"]; 
    NSString *imageName = [imagePath lastPathComponent]; 
    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); 
    NSString *documentsDirectory = [paths objectAtIndex:0]; 
    NSString *localFilePath = [documentsDirectory stringByAppendingPathComponent:imageName]; 
    NSLog(@"localFilePath.%@",localFilePath); 
} 

//Set Image On SDWebView. 
[imageView setImageWithURL:[NSURL URLWithString:localFilePath] placeholderImage:[UIImage imageNamed:@"default_headImg.jpg"]];