iOS share extension dismiss keyboard

问题

I'm implementing a share extension for my app, so far everything is going good except I can't seem to dismiss the keyboard that automatically opens using the default layout/storyboard.

I'm keeping the default design/layout (SLComposeServiceViewController) which includes the preview image and UITextview, the UITextview automatically gets in focus which opens the keyboard.

Normally this is fine, but if you're not logged in my app I display an UIAlertController saying you need to login to share. The problem is the keyboard opens at the same time as the alert.

I've tried [self.view endEditing:YES]; and [self.textView resignFirstResponder]; in both viewDidLoad, viewDidAppear and viewWillAppear with no luck.

回答1:

Found the answer! I didn't read the docs very carefully...

I had to do [self.textView resignFirstResponder]; in -(void)presentationAnimationDidFinish

回答2:

my way is to use UITextViewDelegate

- (void)viewDidLoad {
     [super viewDidLoad];
     self.textView.delegate = self;
     self.canShare = NO;
     [self.view setAlpha:0.0];
}

change canShare to YES in your check login logic

- (void)checkLoggedIn {
    if ([[ShareAccountManager checkLoggedIn]) {
        self.canShare = YES;
        [self.view setAlpha:1.0];
    }
}

and implement method textViewShouldBeginEditing

- (BOOL)textViewShouldBeginEditing:(UITextView *)textView {
    if (self.canShare) {
        return YES;
    }
    return NO;
}

来源：https://stackoverflow.com/questions/28114572/ios-share-extension-dismiss-keyboard