进击的UI---------------- UITextField&UIButton

1.UITextField

1⃣️:初始给值

UITextField *textfield1= [[UITextField alloc]initWithFrame:CGRectMake(100, 100, 150, 40)];

textfield1.backgroundColor = [UIColor colorWithRed:arc4random() % 256 / 255.0 green:arc4random() % 256 / 255.0 blue:arc4random() % 256 / 255.0 alpha:1.0];

[self.window addSubview:textfield1];

2⃣️:文本设置

①:继承UILabel

(1):textfield1.text = @"123";

(2):textfield1.font = [UIFont systemFontOfSize:30];

(3):textfield1.textColor = [UIColor greenColor];

(4):textfield1.textAlignment = NSTextAlignmentLeft;

②:站位字符串:textfield1.placeholder = @"请输入密码";

3⃣️:输入设置:

(1)打开键盘:textfield1.enabled  = YES;// 默认YES,打开键盘;

(2)清空输入框原有内容:textfield1.clearsOnBeginEditing = YES;// ;默认NO;

(3)安全输入:textfield1.secureTextEntry = YES;// 安全输入;(输入密码);默认是NO;

(4)键盘外貌:textfield1.keyboardAppearance = UIKeyboardAppearanceDefault;

(5)弹出键盘:textfield1.keyboardType = UIKeyboardTypeNumberPad;// 键盘类型;弹出数字键盘

                   textfield1.keyboardType = UIKeyboardTypeEmailAddress;// 弹出带@键盘

                   textfield1.keyboardType = UIKeyboardTypeDefault; // 默认

(6)return键类型:textfield1.returnKeyType = UIReturnKeyDone;// return键类型,done完成;

(7)自定义view代替默认键盘:

一.

    UIView *view = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 0, 200)];

    view.backgroundColor = [UIColor redColor];

    textfield1.inputView = view;// 键盘

二.

    UIView *view1 = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 0, 50)];    

    view1.backgroundColor = [UIColor blueColor];

    textfield1.inputAccessoryView = view1;// 键盘上方小键盘

4⃣️:外观设置:

①输入框类型

(1):textfield1.borderStyle = UITextBorderStyleRoundedRect;// 输入框:圆角矩形;

(2):textfield1.borderStyle = UITextBorderStyleNone;

(3):textfield1.borderStyle = UITextBorderStyleLine;

(4):textfield1.borderStyle = UITextBorderStyleBezel;

②显示清除按钮:

(1):textfield1.clearButtonMode = UITextFieldViewModeAlways;

(2):textfield1.clearButtonMode = UITextFieldViewModeNever;

③左右视图

(1):

UIView *view2 = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 50, 50)];

view2.backgroundColor = [UIColor blackColor];

textfield1.leftView = view2;

textfield1.leftViewMode = UITextFieldViewModeAlways;

(2):

    textfield1.rightView = view2;

    textfield1.rightViewMode = UITextFieldViewModeAlways;

    [textfield1 release];

    textfield1 = nil;

2.UIButton

1⃣️:初始化给大小:便利构造器:

 UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem];

//    button.frame = CGRectMake(100, 100, 100, 100);

//    button.backgroundColor = [UIColor redColor];

//    [self.window addSubview:button];

2⃣️:添加点击事件

(1):[button setTitle:@"你点我啊" forState:UIControlStateNormal];// 设置button标题

(2):

[button addTarget:self action:@selector(buttonAction)

forControlEvents:UIControlEventTouchUpInside];// 点击事件(添加方法)

 

 实现方法选择器里面的button响应事件

- (void)buttonAction{

    NSLog(@"你打我啊");

}

3⃣️:添加背景图片:

[button setBackgroundImage:[UIImage imageNamed:@"11.png"] forState:UIControlStateNormal];

 [button addTarget:self action:@selector(buttonAction:) forControlEvents:UIControlEventTouchUpInside];

 self.flag = YES;

(1):@property (nonatomic,assign)BOOL flag;

(2):

 添加点击事件的方法,传入一个参数,参数是这个事件的响应者,参数的类型,是响应者的类型;

- (void)buttonAction:(UIButton *)sender{

    if (self.flag == YES) {

        [sender setBackgroundImage:[UIImage imageNamed:@"22.png"] forState:UIControlStateNormal];

        self.flag = NO;

    }else{

        [sender setBackgroundImage:[UIImage imageNamed:@"11.png"] forState:UIControlStateNormal];

        self.flag = YES;}}

4⃣️:外观控制

①:前景色图片

 注意:1 覆盖标题 2 不会随着buttonframe进行拉伸 3 前景图片必须是镂空图(好像只有线条的图片)

(1):设置前景色图片:[button1 setImage:[UIImage imageNamed:@"55.png"] forState:UIControlStateNormal];

( 2 ):获取前景色图片:UIImage *image1 = [button1 imageForState:UIControlStateNormal];

②:背景色图片

(1):设置背景色图片:[button1 setBackgroundImage:[UIImage imageNamed:@"11.png"] forState:UIControlStateNormal];

( 2 ):获取背景色图片:UIImage *image2 = [button1 backgroundImageForState:UIControlStateNormal];

③:标题

(1):设置标题:[button1 setTitle:@"点我啊" forState:UIControlStateNormal];

( 2 ):获取标题: NSString *title = [button1 titleForState:UIControlStateNormal];

( 3 ):标题颜色:[button1 setTitleColor:[UIColor redColor] forState:UIControlStateNormal];

④:阴影:[button1 setTitleShadowColor:[UIColor orangeColor] forState:UIControlStateNormal];

⑤:获取颜色:UIColor *color1 = [button1 titleColorForState:UIControlStateNormal];

3.delegate

1⃣️:三部步骤

1,遵循协议,找到当前类(到AppDelegate.h文件中的尖括号+,UITextFieldDelegate)

2,设置代理 操作谁,谁.delegate = self;

3,实现代理方法

2⃣️:三部代码:

①:@interface AppDelegate : UIResponder <UIApplicationDelegate,UITextFieldDelegate>

②:

UITextField *text1 = [[UITextField alloc]initWithFrame:CGRectMake(100, 100, 200, 40)];

    text1.backgroundColor = [UIColor grayColor];

    [self.window addSubview:text1];

    text1.returnKeyType = UIReturnKeyDone;

text1.delegate = self;

[text1 release];

    text1 = nil;

③:

- (BOOL)textFieldShouldReturn:(UITextField *)textField{

    [textField resignFirstResponder];// 释放第一响应者

    return YES;}

    // 实现代理方法注意:

    //     1有返回值

    //     2释放第一响应者

4.程序启动流程

1⃣️:

程序的启动流程

// 首先 main函数(作为程序入口)

//  1 创建应⽤用程序(UIApplication)实例

//  2 创建应⽤用程序代理(Application)实例 不能够把所有的代码写在MAIN函数里 可以写代码在Application里 体现封装的特性

//  3 建⽴立事件循环（runloop：死循环，不断检测程序运⾏行状态，是否被触摸、晃动等）

2⃣️:

①:

- (void)applicationWillResignActive:(UIApplication *)application {

    NSLog(@"程序将要退出活跃状态");

}

②:

- (void)applicationDidEnterBackground:(UIApplication *)application {

    NSLog(@"程序已经进入后台");

}

③:

- (void)applicationWillEnterForeground:(UIApplication *)application {

    NSLog(@"程序将要进入前台");

}

④:

- (void)applicationDidBecomeActive:(UIApplication *)application {

    NSLog(@"程序已经变成活跃状态");

}

⑤:

- (void)applicationWillTerminate:(UIApplication *)application {

    NSLog(@"程序将要终结"); 

}

⑥:

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    NSLog(@"已经完成启动");

}