UITextView的變化高度從縱向去到風景

Question

我有一個TextView作爲UIView的子視圖，這是本方案的一個滾動視圖的子視圖：

-UIScrollView *scrollView 
    -UIView *containerView 
     -UITextView *textView 
     -MKMapView *mapView 
     -UIImageView *imageView 

我有旋轉過程中出現問題，在從縱向到橫向的過渡將縮短TextView，並且不再顯示在旋轉之前可見的文本的一部分。相反，從風景到肖像作品。科莎可以嗎？ textView完全用代碼創建，沒有IBOutlet。

的UITextView是可變的高度，以viewDidLoad的contentSize被設置如下：

- (void)viewDidLoad 
{ 
     [super viewDidLoad]; 
     //.... 
     self.textView = [[UITextView alloc]init]; 
     self.textView.backgroundColor =[UIColor clearColor]; 

     CGRect frame; 
     frame = self.textView.frame; 
     frame.size.height= [self.textView contentSize].height; 
     [self.textView setContentSize:self.textView.contentSize]; 
     self.textView.frame = frame; 
     NSLog(@"The contentSize of TextView is %@",NSStringFromCGSize 
               (self.textView.contentSize)); 

     //The contentSize of TextView is {0, 161032} 
     //........ 


    } 

的willRotateToInterfaceOrientation:duration看起來像：

-(void) willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration { 

    if(deviceOrientation == UIInterfaceOrientationPortrait || deviceOrientation== UIInterfaceOrientationPortraitUpsideDown) { 
     CGSize containerSize = CGSizeMake(768, 5000); 

     self.scrollView.contentSize = containerSize; 
     self.containerView.frame = CGRectMake(0, 0, 768, 5000); 

     [self layoutPortrait]; 
    } 
    else if (deviceOrientation== UIInterfaceOrientationLandscapeRight){ 
     CGSize containerSize = CGSizeMake(1004, 5000); 

     self.scrollView.contentSize = containerSize; 
     self.containerView.frame = CGRectMake(0, 0, 1024, 5000); 

     [self layoutLandscape]; 
    } 
    else if (deviceOrientation==UIInterfaceOrientationLandscapeLeft){ 
     CGSize containerSize = CGSizeMake(1004, 5000); 

     self.scrollView.contentSize = containerSize; 
     self.containerView.frame = CGRectMake(0, 0, 1024, 5000); 

     [self layoutLandscape]; 
    } 
} 

這處理幀的旋轉的兩種方法是：

-(void) layoutPortrait{ 
     //... 
     NSLog(@"the height of textView è %f", self.textView.contentSize.height); 
     //the height of textView è 161032.000000 

     self.textView.frame =CGRectMake(56, 490, self.viewImages.frame.size.width, self.textView.contentSize.height); 
     //..... 
} 
-(void) layoutLandscape{ 
     //...... 
     NSLog(@"The height of textView è %f", self.textView.contentSize.height); 
     /*The height of textView è 2872.000000 
     (This after rotation from portrait to landscape)*/ 

     self.textView.frame = CGRectMake(170, 495, self.viewImages.frame.size.width, self.textView.contentSize.height); 
     //...... 
} 

我想說的是旋轉過程中textView的高度保持不變。隨着UIImageView和MKMapView的工作。

Answer 1

嘗試這種情況：

• 在viewDidLoad中的初始化後，添加以下行：

  self.textView.autoresizingMask = UIViewAutoresizingFlexibleBottomMargin | UIViewAutoresizingFlexibleWidth;

• 在把手框架旋轉的方法，改變contentSize到幀：

  -(void) layoutPortrait{ 
      //... 
      NSLog(@"the height of textView è %f", self.textView.contentSize.height); 
      //the height of textView è 161032.000000 
  
      self.textView.frame =CGRectMake(56, 490, self.viewImages.frame.size.width, self.textView.frame.height); 
      //..... 
  } 
  -(void) layoutLandscape{ 
      //...... 
      NSLog(@"The height of textView è %f", self.textView.contentSize.height); 
      /*The height of textView è 2872.000000 
      (This after rotation from portrait to landscape)*/ 
  
      self.textView.frame = CGRectMake(170, 495, self.viewImages.frame.size.width, self.textView.frame.height); 
      //...... 
  } 
  

這應該做的伎倆（我在Windows中，所以我不能嘗試它）