UIButton和UITextField

UIButton和UITextField

import “AppDelegate.h”

@interface AppDelegate ()

@property(nonatomic,retain)UITextField *textField;
@property(nonatomic,assign)BOOL isSelect;
@property(nonatomic,retain)UILabel *label;

@end

@implementation AppDelegate

• (void)dealloc
  {
  [_label release];
  [_textField release];
  [_window release];
  [super dealloc];
  }

• (BOOL)application:(UIApplication )application didFinishLaunchingWithOptions:(NSDictionary )launchOptions {
  self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
  // Override point for customization after application launch.
  self.window.backgroundColor = [UIColor whiteColor];
  [self.window makeKeyAndVisible];
  [_window release];

  // 新建一个button
  UIButton *button=[UIButton buttonWithType:UIButtonTypeSystem];
  button.frame=CGRectMake(200, 300, 100, 50);
  button.backgroundColor=[UIColor redColor];
  [self.window addSubview:button];
  button.layer.borderWidth=1;
  button.layer.cornerRadius=20;
  [button setTitle:@”测试” forState:UIControlStateNormal];
  [button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
  button.titleLabel.font=[UIFont systemFontOfSize:20];
  [button addTarget:self action:@selector(click:) forControlEvents:UIControlEventTouchUpInside];

  // 创建一个textField
  self.textField=[[UITextField alloc] initWithFrame:CGRectMake(50, 100, 150, 50)];
  self.textField.backgroundColor=[UIColor yellowColor];
  [self.window addSubview:self.textField];
  [self.textField release];
  self.textField.layer.borderWidth=1;
  self.textField.layer.cornerRadius=20;
  self.textField.tag=1000;

  // 给textField添加addTarget-action方法
  [self.textField addTarget:self action:@selector(changeValue:) forControlEvents:UIControlEventEditingChanged];

  // 创建一个按钮,用来textField切换状态
  UIButton *button1=[UIButton buttonWithType:UIButtonTypeCustom];
  button1.frame=CGRectMake(50, 160, 30, 30);
  [button1 setBackgroundImage:[UIImage imageNamed:@”check.png”] forState:UIControlStateNormal];
  [self.window addSubview:button1];

  [button1 addTarget:self action:@selector(check:) forControlEvents:UIControlEventTouchUpInside];
  self.isSelect=YES;

  // 给textField输入进去之后是圆点
  self.textField.secureTextEntry=YES;

  // label显示
  UILabel *label=[[UILabel alloc] initWithFrame:CGRectMake(90, 160, 150, 30)];
  label.backgroundColor=[UIColor whiteColor];
  [self.window addSubview:label];
  [label release];
  label.text=@”是否显示文本”;
  label.textColor=[UIColor redColor];
  label.textAlignment=NSTextAlignmentLeft;

  // 创建一个label
  self.label=[[UILabel alloc] initWithFrame:CGRectMake(210, 100, 150, 50)];
  self.label.backgroundColor=[UIColor whiteColor];
  [self.window addSubview:self.label];
  [self.label release];
  self.label.textColor=[UIColor greenColor];
  self.label.font=[UIFont systemFontOfSize:20];

  MyButton *muButton=[MyButton buttonWithType:UIButtonTypeSystem];
  muButton.frame=CGRectMake(50, 300, 100, 50);
  muButton.buttonName=@”张三”;
  [self.window addSubview:muButton];
  [muButton setTitle:@”MyButton” forState:UIControlStateNormal];
  muButton.titleLabel.font=[UIFont systemFontOfSize:20];

  return YES;
  }

-(void)click:(UIButton *)button{
// 先找到textField,然后再找到里面对应的内容
UITextField textField=(UITextField )[self.window viewWithTag:1000];
NSLog(@”%@”,textField.text);
NSLog(@”%@”,self.textField.text);
}

-(void)check:(UIButton *)button1{
if (self.isSelect) {
[button1 setBackgroundImage:[UIImage imageNamed:@”checked.png”] forState:UIControlStateNormal];
}else{
[button1 setBackgroundImage:[UIImage imageNamed:@”check.png”] forState:UIControlStateNormal];
}
self.isSelect=!self.isSelect;

self.textField.secureTextEntry=!self.textField.secureTextEntry;

}

-(void)changeValue:(UITextField *)textField{
NSLog(@”%@”,textField.text);
if (textField.text.length>5) {
self.label.text=@”密码长度符合”;
}else{
self.label.text=@”密码长度太短”;
}
}