[GitHub] cvanem commented on issue #417: Keyboard Dismissal Leaves Viewport Shifted in iOS 12 / XCode 10

[GitBox <gi...@apache.org>]

cvanem commented on issue #417: Keyboard Dismissal Leaves Viewport Shifted in iOS 12 / XCode 10
URL: https://github.com/apache/cordova-ios/issues/417#issuecomment-451736105
 
 
   For anyone using cordova [inappbrowser](https://github.com/apache/cordova-plugin-inappbrowser), here is a slightly modified fix of mlynch's post above that works nicely for inappbrowser:
   
   Make the following changes to file: **CDVWKInAppBrowser.m**
   
   **1. Add this directly before the pluginInitialize function:**
       
       NSTimer *timer;
   
   **2. Add this to the bottom of the pluginInitialize function:**
   
        [[NSNotificationCenter defaultCenter]
        addObserver:self
        selector:@selector(keyboardWillHide)
        name:UIKeyboardWillHideNotification object:nil];
   
       [[NSNotificationCenter defaultCenter]
        addObserver:self
        selector:@selector(keyboardWillShow)
        name:UIKeyboardWillShowNotification object:nil];   
   
   **3. Add these directly below the pluginInitialize function:**
   
   ```
    -(void)keyboardWillHide
   {       
       if (@available(iOS 12.0, *)) {
           timer = [NSTimer scheduledTimerWithTimeInterval:0 target:self selector:@selector(keyboardDisplacementFix) userInfo:nil repeats:false];
           [[NSRunLoop mainRunLoop] addTimer:timer forMode:NSRunLoopCommonModes];
       }
   }
   
    -(void)keyboardWillShow
   {    
       if (timer != nil) {
           [timer invalidate];
       }
   }
   
    -(void)keyboardDisplacementFix
   {    
       if ([self.inAppBrowserViewController.webView respondsToSelector:@selector(scrollView)]) { 
           [UIView animateWithDuration:.25 animations:^{
               ((UIScrollView*)[self.inAppBrowserViewController.webView scrollView]).contentOffset = CGPointMake(0, 0);
           }];        
       } 
    }
   ```

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