SDWebImage ,setImageWithUrl can't show the image on the imageView - ios

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"]];