[英]How can I convert FBProfilePictureView to an UIImage?
FBProfilePictureView一切正常,但是我需要從FBProfilePictureView獲取該圖片並將其轉換為UIImage。
我該怎么辦?
我嘗試使用此:
UIGraphicsBeginImageContext(self.profilePictureView.frame.size);
[self.view.layer renderInContext:UIGraphicsGetCurrentContext()];
UIImage *viewImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
self.TestPictureOutlet.image = viewImage;
但這不適用於我的解決方案。
FBProfilePictureView是一個UIView,此UIView包含一個UIImageView,即您的圖像,您可以從該UIImageView獲取UIImage:
profilePictureView是FBProfilePictureView
UIImage *image = nil;
for (NSObject *obj in [profilePictureView subviews]) {
if ([obj isMemberOfClass:[UIImageView class]]) {
UIImageView *objImg = (UIImageView *)obj;
image = objImg.image;
break;
}
}
編輯:更快地添加另一種方法,但做同樣的事情
__block UIImage *image = nil;
[self.view.subviews enumerateObjectsUsingBlock:^(NSObject *obj, NSUInteger idx, BOOL *stop) {
if ([obj isMemberOfClass:[UIImageView class]]) {
UIImageView *objImg = (UIImageView *)obj;
image = objImg.image;
*stop = YES;
}
}];
上面提到的兩個解決方案都能很好地從FBProfilePictureView中獲取UIImage對象。 唯一的事情是,您需要花點時間才能從FBProfilePictureView獲取圖像。 喜歡:
[FBRequest requestForMe] startWithCompletionHandler:
^(FBRequestConnection *connection, NSDictionary<FBGraphUser> *user, NSError *error) {
if (!error) {
myNameLbl.text = user.name;
profileDP.profileID = user.id;
//NOTE THIS LINE WHICH DOES THE MAGIC
[self performSelector:@selector(getUserImageFromFBView) withObject:nil afterDelay:1.0];
}];
- (void)getUserImageFromFBView{
UIImage *img = nil;
//1 - Solution to get UIImage obj
for (NSObject *obj in [profileDP subviews]) {
if ([obj isMemberOfClass:[UIImageView class]]) {
UIImageView *objImg = (UIImageView *)obj;
img = objImg.image;
break;
}
}
//2 - Solution to get UIImage obj
// UIGraphicsBeginImageContext(profileDP.frame.size);
// [profileDP.layer renderInContext:UIGraphicsGetCurrentContext()];
// img = UIGraphicsGetImageFromCurrentImageContext();
// UIGraphicsEndImageContext();
//Here I'm setting image and it works 100% for me.
testImgv.image = img;
}
問候!
Aamir Ali-iOS應用開發人員
@時間組(TGD)
這里解決。
腳步:
確保您已將FB用戶ID分配給類“ FBProfilePictureView”的對象,在本例中,該類對象是“ userPictureImageView”
-(void)saveFBUserImage
{
CGSize imageSize = self.userPictureImageView.frame.size;
UIGraphicsBeginImageContext(imageSize);
CGContextRef imageContext = UIGraphicsGetCurrentContext();
[self.userPictureImageView.layer renderInContext: imageContext];
UIImage* viewImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
NSData *imageData = UIImageJPEGRepresentation(viewImage,1);
UIImage * img = [UIImage imageWithData:imageData];
NSString *filePath = <specify your path here>;
CGSize size = img.size;
if(size.height > 50)
size.height = 50;
if(size.width > 50)
size.width = 50;
CGRect rect = CGRectMake(0.0f, 0.0f, size.width, size.height);
CGSize size2 = rect.size;
UIGraphicsBeginImageContext(size2);
[img drawInRect:rect];
img = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
NSData *newImageData = UIImageJPEGRepresentation(img, 1.0);
[newImageData writeToFile:filePath atomically:YES];
}
而已。 :-)
我發現上面的解決方案很有效,但是這里有更新的代碼,我發現它更容易上手。
@property FBSDKProfilePictureView *pictureView;
if ([FBSDKAccessToken currentAccessToken]) {
self.pictureView=[[FBSDKProfilePictureView alloc]init];
[self.pictureView setProfileID:@"me"];
[self.pictureView setPreservesSuperviewLayoutMargins:YES];
[self.pictureView setPictureMode:FBSDKProfilePictureModeNormal];
[self.pictureView setNeedsImageUpdate];
[self performSelector:@selector(getUserImageFromFBView) withObject:nil afterDelay:1.0];
}
-(void) getUserImageFromFBView
{
UIImage *image = nil;
for (NSObject *obj in [self.pictureView subviews]) {
if ([obj isMemberOfClass:[UIImageView class]]) {
UIImageView *objImg = (UIImageView *)obj;
image = objImg.image;
break;
}
}
[self.profilePic setImage:image forState:UIControlStateNormal];
}
希望這可以幫助。 在這里,我已經放置了1秒的延遲來等待頭像加載。
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