Question

我有一个用于管理UITextview的简单视图控制器（SecondViewController）（我正在构建一个简单的编辑器）这是SecondViewController.h的代码


    @interface SecondViewController : UIViewController {
 IBOutlet UITextView *textView;
}
@property (nonatomic,retain) IBOutlet UITextView *textView;
@end

这是SecondViewController.m



//
//  EditorViewController.m
//  Editor
//
//  Created by elio d'antoni on 13/01/11.
//  Copyright 2011 none. All rights reserved.
//
@implementation SecondViewController
@synthesize textView;

/*
 // Implement loadView to create a view hierarchy programmatically, without using a nib.
 - (void)loadView {
 }
 */

// Implement viewDidLoad to do additional setup after loading the view, typically from a nib.
- (void)viewDidLoad {
    [super viewDidLoad];
 self.view.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"uiViewBg.png"]];
 textView.layer.borderWidth=1;
 textView.layer.cornerRadius=5;
 textView.layer.borderColor=[[UIColor darkGrayColor] CGColor];
 [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillAppear:) name:UIKeyboardWillShowNotification object:nil];
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(keyboardWillDisappear:) name:UIKeyboardWillHideNotification object:nil];

}

-(void) matchAnimationTo:(NSDictionary *) userInfo {
 NSLog(@"match animation method");
    [UIView setAnimationDuration:[[userInfo objectForKey:UIKeyboardAnimationDurationUserInfoKey] doubleValue]];
    [UIView setAnimationCurve:[[userInfo objectForKey:UIKeyboardAnimationCurveUserInfoKey] intValue]];
}

-(CGFloat) keyboardEndingFrameHeight:(NSDictionary *) userInfo {
 NSLog(@"keyboardEndingFrameHeight method");

CGRect keyboardEndingUncorrectedFrame = 


[[ userInfo objectForKey:UIKeyboardFrameEndUserInfoKey ] 
  CGRectValue];
    CGRect keyboardEndingFrame = 
 [self.view convertRect:keyboardEndingUncorrectedFrame 
                  fromView:nil];
    return keyboardEndingFrame.size.height;
}

-(CGRect) adjustFrameHeightBy:(CGFloat) change 
                 multipliedBy:(NSInteger) direction {
 NSLog(@"adjust method");

return CGRectMake(20, 
                  57, 
                  self.textView.frame.size.width, 
                  self.textView.frame.size.height + change * direction);


}
-(void)keyboardWillAppear:(NSNotification *)notification {
 NSLog(@"keyboard appear");
    [UIView beginAnimations:nil context:NULL];
    [self matchAnimationTo:[notification userInfo]];
    self.textView.frame = 
 [self adjustFrameHeightBy:[self keyboardEndingFrameHeight:
          [notification userInfo]] 
     multipliedBy:-1];
    [UIView commitAnimations];
}
-(void)keyboardWillDisappear:(NSNotification *) notification {
 NSLog(@"keyboard disappear");
    [UIView beginAnimations:nil context:NULL];
    [self matchAnimationTo:[notification userInfo]];
    self.textView.frame = 
 [self adjustFrameHeightBy:[self keyboardEndingFrameHeight:
          [notification userInfo]] 
     multipliedBy:1];
    [UIView commitAnimations];
}

// Override to allow orientations other than the default portrait orientation.
- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation {
    return YES;
}


(void)didReceiveMemoryWarning {
// Releases the view if it doesn't have a superview.
[super didReceiveMemoryWarning];

// Release any cached data, images, etc that aren't in use.
}
(void)viewDidUnload {
// Release any retained subviews of the main view.
// e.g. self.myOutlet = nil;
}
(void)dealloc {
[super dealloc];
}


@end

问题是，如果从标签栏控制器加载视图控制器，则当键盘出现时，textView不会调整大小，但如果作为基于单个视图的应用程序加载，则SAME代码可以正常工作。我希望我很清楚。我使用xcode提供的tabBar模板没有修改。

Answer 1

您的代码看起来正确，注意到您没有在dealloc和“viewDidUnload”中发布“textView”，但这应该会有所不同。

我正在检查收到的通知并且已连线，即textView不是零

如果从标签栏控制器加载键盘，则UITextView不会调整大小

1 个答案: