button label textfield对齐 textview UI样式
align和valign有什么区别?
ios 设置一个textField不可编辑
从此不再担心键盘遮住输入框OC(二)
如何设置UILabel的内边距？
10个HTML5美化版复选框和单选框
UITextField 监听数值变化的三种方法 good
UIButton 使用全面解析
UITextField 应用全面解析

align 水平对齐方式

align=center或left或right

valign 垂直对齐方式
valign=top或middle或bottom

ios 设置一个textField不可编辑

(BOOL)textFieldShouldBeginEditing:(UITextField *)textField {

return NO；

｝

从此不再担心键盘遮住输入框OC(二)

如何设置UILabel的内边距？

10个HTML5美化版复选框和单选框

UITextField 监听数值变化的三种方法 good

[self.textField1 addTarget:self action:@selector(textField1TextChange:) forControlEvents:UIControlEventEditingChanged];

iOS UIAppearance使用详解

UILabel设置多种字体、颜色

- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    self.view.backgroundColor = [UIColor blackColor];
    
    
    _upButton = [[UIButton alloc]init];
    _downButton = [[UIButton alloc]init];
//    [_upButton setContentHorizontalAlignment:UIControlContentHorizontalAlignmentLeft]; //ok
    [_upButton setContentHorizontalAlignment:UIControlContentHorizontalAlignmentCenter];
//    [_downButton setContentMode:UIViewContentModeBottomLeft]; //无效
    [_downButton setContentHorizontalAlignment:UIControlContentHorizontalAlignmentRight];
    
    _upButton.frame = CGRectMake(0, 20, 320, 40);
    _downButton.frame = CGRectMake(0, 60, 320, 25);
    
    [_upButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
    [_downButton setTitleColor:[UIColor whiteColor] forState:UIControlStateNormal];
    
    [_upButton setTitle:@"short" forState:UIControlStateNormal];
    [_downButton setTitle:@"longlonglonglonglonglong" forState:UIControlStateNormal];
    
    [self.view addSubview:_upButton];
    [self.view addSubview:_downButton];
    

    
    _textFieldA = [[UITextField alloc]init];
    _textFieldB = [[UITextField alloc]init];
    [_textFieldA setTextColor:[UIColor whiteColor]];
    [_textFieldB setTextColor:[UIColor whiteColor]];
    
    
    [_textFieldA setText:@"A"];
    [_textFieldB setText:@"B"];
    
    
    _textFieldA.textAlignment = UITextAlignmentCenter; //OK
    _textFieldB.textAlignment = UITextAlignmentRight; //OK
    
    _textFieldA.contentMode = UIViewContentModeCenter; //不行
    
     /*不能居中*/
    //    _textFieldA.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter; //垂直居中
//    _textFieldA.contentHorizontalAlignment = UIControlContentHorizontalAlignmentCenter; //水平居中
//
//
//    _textFieldB.contentVerticalAlignment = UIControlContentVerticalAlignmentCenter; //垂直居中
//    _textFieldB.contentHorizontalAlignment = UIControlContentHorizontalAlignmentCenter; //水平居中
    
    _textFieldA.frame = CGRectMake(0, 85, 320, 40);
    _textFieldB.frame = CGRectMake(0, 125, 320, 25);
    
    [self.view addSubview:_textFieldA];
    [self.view addSubview:_textFieldB];
    
    _labelA = [[UILabel alloc]init];
    _labelB = [[UILabel alloc]init];
    [_labelA setTextColor:[UIColor whiteColor]];
    [_labelB setTextColor:[UIColor whiteColor]];
    
    
    [_labelA setText:@"A"];
    [_labelB setText:@"B"];
    
    _labelA.textAlignment = UITextAlignmentCenter; // ok
    _labelB.textAlignment = UITextAlignmentRight; // ok
    
    _labelA.frame = CGRectMake(0, 150, 320, 40);
    _labelB.frame = CGRectMake(0, 190, 320, 25);
    
    [self.view addSubview:_labelA];
    [self.view addSubview:_labelB];
    
}

结果：

textview 不可编辑状态

_textview.editable = NO;

_textview.inputAccessoryView = nil;

UIButton 使用全面解析

UITextField 应用全面解析

//设置边框样式，只有设置了才会显示边框样式

text.borderStyle = UITextBorderStyleRoundedRect;

//输入框中是否有个叉号，在什么时候显示，用于一次性删除输入框中的内容

text.clearButtonMode = UITextFieldViewModeAlways;

//是否纠错

text.autocorrectionType = UITextAutocorrectionTypeNo;

/再次编辑就清空

text.clearsOnBeginEditing = YES;

//设置为YES时文本会自动缩小以适应文本窗口大小.默认是保持原来大小,而让长文本滚动

textFied.adjustsFontSizeToFitWidth = YES;

//首字母是否大写

text.autocapitalizationType = UITextAutocapitalizationTypeNone;

//return键变成什么键

text.returnKeyType =UIReturnKeyDone;

_mobileField.custfield.autocorrectionType = UITextAutocorrectionTypeNo;
autocorrectionType可以去掉键盘上面的一行提示文字