UI笔记2

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/**

 *  用户名

 */

@property(strong,nonatomic) UITextField *txtName;

@property(strong,nonatomic)  UITextView *txtView;

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

//    初始化

    self.txtName=[[UITextField alloc] initWithFrame:CGRectMake(100, 50, 200, 44)];

//    添加背景色

    //self.txtName.backgroundColor=[UIColor redColor];

//    键盘

    self.txtName.borderStyle=UITextBorderStyleLine;

    self.txtName.placeholder=@"请输入姓名";

    [self.view addSubview:self.txtName];

//    不用占位符赋的字符实的存在。

    self.txtName.text=@"asdf";

    self.txtName.delegate=self;

    NSMutableAttributedString *str=[[NSMutableAttributedString alloc] initWithString:@"lamco" attributes:@{NSBackgroundColorAttributeName:[UIColor redColor]

                                                                                        }];

    [str addAttributes:@{NSBackgroundColorAttributeName:[UIColor greenColor],NSFontAttributeName:[UIFont systemFontOfSize:40]} range:NSMakeRange(2, 1)];

    [str addAttributes:@{NSForegroundColorAttributeName:[UIColor yellowColor]} range:NSMakeRange(1, 3)];

//

//

    self.txtName.attributedText=str;

//

//    self.txtName.returnKeyType=UIReturnKeySend;

//    

//    self.txtName.keyboardType=UIKeyboardTypePhonePad;

//

//    self.txtView=[[UITextView alloc]

//    initWithFrame:self.view.frame];

//    self.txtView.text=@"新华网北京3月7日电 3月7日上午，来到十二届全国人大四次会议黑龙江代表团参加审议。";

   // [self.view addSubview:self.txtView];

}

- (BOOL)textFieldShouldReturn:(UITextField *)textField

{

    if ([textField isFirstResponder]) {

        [textField resignFirstResponder];

    }

    return YES;

}

@property(strong,nonatomic) UIButton *btnTest;

@property(strong,nonatomic) UITextField *txtName;

#import "ViewController.h"

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    self.btnTest=[UIButton buttonWithType:UIButtonTypeRoundedRect];

    self.btnTest.frame=CGRectMake(100, 100, 150, 44);

    [self.btnTest setTitle:@"按钮" forState:UIControlStateNormal];

    [self.btnTest setBackgroundColor:[UIColor yellowColor]];

    [self.btnTest addTarget:self action:@selector(testBtn) forControlEvents:UIControlEventTouchUpInside];

    [self.view addSubview:self.btnTest];

    self.txtName=[[UITextField alloc] initWithFrame:CGRectMake(100, 200, 200, 44)];

    self.txtName.borderStyle=1;

    [self.view addSubview:self.txtName];

}

-(void)testBtn

{

    NSString *name=self.txtName.text;

    NSLog(@"%@",name);

    int len=(int)self.txtName.text.length;

    if (len==0) {

        NSLog(@"用户名不能为空");

    }

    else if (len>0&&len<8)

    {

        NSLog(@"长度不够");

    }

    else {

        NSLog(@"继续");

    }

}

UI笔记2

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原文地址：http://www.cnblogs.com/tianlianghong/p/5256199.html