上一篇：iOS分割視圖(Split View) 下一篇：iOS視圖切換(View Transitions)

iOS文本視圖（Text View）

IOS文本視圖的使用

文本視圖用于顯示多行滾動(dòng)的文本。

重要屬性

dataDetectorTypes
delegate
editable
inputAccessoryView
inputView
text
textAlignment
textColor

重要的委托方法

-(void)textViewDidBeginEditing:(UITextView *)textView

-(void)textViewDidEndEditing:(UITextView *)textView

-(void)textViewDidChange:(UITextView *)textView

-(BOOL)textViewShouldEndEditing:(UITextView *)textView

添加自定義方法 addTextView

-(void)addTextView{
    myTextView = [[UITextView alloc]initWithFrame:
    CGRectMake(10, 50, 300, 200)];
    [myTextView setText:@"Lorem ipsum dolor sit er elit lamet, consectetaur
    cillium adipisicing pecu, sed do eiusmod tempor incididunt ut labore et 
    dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation 
    ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure
    dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat 
    nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in 
    culpa qui officia deserunt mollit anim id est laborum. Nam liber te 
    conscient to factor tum poen legum odioque civiuda.
    Lorem ipsum dolor sit er elit lamet, consectetaur cillium adipisicing
    pecu, sed do eiusmod tempor incididunt ut labore et dolore magna aiqua. 
    Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi 
    aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit 
    in voluptate velit esse cillum dolore eu fugiat nulla pariatur.
    Excepteur sint occaecat cupidatat non proident, sunt in culpa
    qui officia deserunt mollit anim id est laborum. Nam liber te conscient
    to factor tum poen legum odioque civiuda."];
    myTextView.delegate = self;
    [self.view addSubview:myTextView];

}

在 ViewController.m 中執(zhí)行 textView 委托

#pragma mark - Text View delegates

-(BOOL)textView:(UITextView *)textView shouldChangeTextInRange:
 (NSRange)range replacementText:(NSString *)text{
    if ([text isEqualToString:@"n"]) {
        [textView resignFirstResponder];
    }
    return YES;
}
-(void)textViewDidBeginEditing:(UITextView *)textView{
    NSLog(@"Did begin editing");
}
-(void)textViewDidChange:(UITextView *)textView{
    NSLog(@"Did Change");

}
-(void)textViewDidEndEditing:(UITextView *)textView{
    NSLog(@"Did End editing");

}
-(BOOL)textViewShouldEndEditing:(UITextView *)textView{
    [textView resignFirstResponder];
    return YES;
}

修改 ViewController.m 中的 viewDidLoad方法，如下所示

(void)viewDidLoad
{
   [super viewDidLoad];
   [self addTextView];
}

結(jié)果輸出

現(xiàn)在當(dāng)我們運(yùn)行該應(yīng)用程序我們會(huì)看到下面的輸出

textViewOutput

其他擴(kuò)展