UITextField的属性与程序启动后一系列方法
// UITextField 文本输入框
// UITextField 继承与 UIControl
// UIContr 继承与 UIView
self.textField = [[UITextField alloc]initWithFrame:CGRectMake(100, 100, 200, 50)];
self.textField.backgroundColor = KMyColor;
// 设置代理
self.textField.delegate = self;
// 设置占位符
self.textField.placeholder = @"请输入";
// 字体大小
self.textField.font = [UIFont systemFontOfSize:25];
// 字体颜色
self.textField.textColor = [UIColor redColor];
// 对齐方式
self.textField.textAlignment = NSTextAlignmentLeft;
// 是否允许输入 也就是是否开启交互 默认是YES 支持交互
// textField.enabled = YES;
// 任何一个有交互行为的控件 交互默认都是打开的 但是我们也可以将其关闭
//self.textField.userInteractionEnabled = YES;
// 输入的时候 为密码模式(安全输入模式)
//self.textField.secureTextEntry = YES;
// 下一次输入的时候 是否清空上一次的内容
//self.textField.clearsOnBeginEditing = YES;
// 设置return键的样式 默认是换行
//self.textField.returnKeyType = UIReturnKeySearch;
// 设置键盘样式 默认的是英文
//self.textField.keyboardType = UIKeyboardTypeNumberPad;
// 是否显示 清除按钮 默认是不显示
self.textField.clearButtonMode = UITextFieldViewModeAlways;
// 给textField 添加左视图 和右视图
// 自定义左边视图
/*
UIView *leftView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 50, 50)];
leftView.backgroundColor = [UIColor greenColor];
self.textField.leftView = leftView;
self.textField.leftViewMode = UITextFieldViewModeAlways;
[leftView release];
// 自定义右边视图
UIView *rightView = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 50, 50)];
rightView.backgroundColor = [UIColor redColor];
self.textField.rightView = rightView;
self.textField.rightViewMode = UITextFieldViewModeAlways;
[rightView release];
*/
// 给textField 设置边框圆角 常用的样式 因为比较好看
self.textField.borderStyle = UITextBorderStyleRoundedRect;
// 自定义键盘
/*
UIView *view = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 200, 200)];
view.backgroundColor = [UIColor redColor];
self.textField.inputView = view;
[view release];
*/
// 自定义键盘上面的视图
/*
UIView *view = [[UIView alloc]initWithFrame:CGRectMake(0, 0, 200, 200)];
view.backgroundColor = [UIColor redColor];
self.textField.inputAccessoryView = view;
[view release];
*/
// 等号左边的是set方法 要用self. 等号右边的是 get方法 要用_
[self.window addSubview:_textField];
[self.textField release];
// UIButton 按钮
// UIButton 继承与 UIControl
// UIControl 继承与 UIView
// button 类方法创造出来 切记 不需要释放
// 给button 添加背景图片 图片的宽高 需要和button的宽高结合起来使用 button的宽高 = 图片的宽高 / 2
// 背景图片 button的类型必须是 UIButtonTypeSystem
// 前景图片 button的类型必须是 UIButtonTypeCustom
//UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem];
UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom];
button.frame = CGRectMake(100, 200, 290 / 2 , 92 / 2);
// button.backgroundColor = [UIColor redColor];
// 设置button标题
[button setTitle:@"按钮" forState:UIControlStateNormal];
button.tag = 100;
// 设置标题颜色
[button setTitleColor:[UIColor redColor] forState:UIControlStateNormal];
// 取出button标题
NSString *titleString = [button titleForState:UIControlStateNormal];
NSLog(@"%@",titleString);
[self.window addSubview:button];
UIButton *button2 = [UIButton buttonWithType:UIButtonTypeCustom];
button2.frame = CGRectMake(100, 300, 290 / 2, 92 / 2);
[button2 setTitleColor:[UIColor clearColor] forState:UIControlStateNormal];
[button2 setTitle:@"按钮2" forState:UIControlStateNormal];
[self.window addSubview:button2];
button2.tag = 200;
// 给button 添加点击事件
//[button addTarget:self action:@selector(buttonAction) forControlEvents:UIControlEventTouchDown];//点进去触发
// 点下去松开才会触发
[button addTarget:self action:@selector(buttonAction:) forControlEvents:UIControlEventTouchUpInside];
[button2 addTarget:self action:@selector(buttonAction:) forControlEvents:UIControlEventTouchUpInside];
// 给button设置背景图片
// UIImage 继承与 NSObject 他不是一个控件
// UIImage 需要通过 某一个控件 才能够展示出来
/*
[button setBackgroundImage:[UIImage imageNamed:@"denglu.png"] forState:UIControlStateNormal];
// 取出button的背景图片
UIImage *image = [button backgroundImageForState:UIControlStateNormal];
[button setBackgroundImage:image forState:UIControlStateNormal];
*/
// // 给button设置前景图片
// [button setImage:[UIImage imageNamed:@"denglu.png"] forState:UIControlStateNormal];
// [self.window addSubview:button];
//
// [button2 setImage:[UIImage imageNamed:@"zhuce.png"] forState:UIControlStateNormal];
// [self.window addSubview:button2];
// //button.clipsToBounds = YES;
// //button.layer.masksToBounds = YES;
//
// // 给button取出前景图片
// UIImage *image = [button imageForState:UIControlStateNormal];
// [button setImage:image forState:UIControlStateNormal];
return YES;
}
#pragma mark --- alertView代理方法------
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (alertView.tag == 300)
{
if (buttonIndex == 0)
{
NSLog(@"点击了取消");
}
else if(buttonIndex == 1)
{
NSLog(@"点击了确定");
}
else if(buttonIndex == 2)
{
NSLog(@"点击了哈哈");
}
}
else if (alertView.tag == 400)
{
if (buttonIndex == 0)
{
NSLog(@"点击了注册的取消");
}
else if(buttonIndex == 1)
{
NSLog(@"点击了注册的确定");
}
else if(buttonIndex == 2)
{
NSLog(@"点击了注册的哈哈");
}
}
}
// 这个代理方法 只是找到点击键盘的return键
// 内部具体要实现什么样的效果 取决于代码
// 我们此时只是实现了 点击return键 回收键盘
/*
- (void)buttonAction
{
NSLog(@"正在录音");
//self.window.backgroundColor = [UIColor redColor];
}
*/
- (void)buttonAction:(UIButton *)button
{
if (button.tag == 100)
{
// 设置了代理之后 delegate后面要跟 self
UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:@"提示" message:@"是否登录" delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"确定",@"哈哈", nil];
alertView.tag = 300;
// 设置样式
alertView.alertViewStyle = UIAlertViewStyleLoginAndPasswordInput;
// 取到提示框上的textField
/*
UITextField *textField = [alertView textFieldAtIndex:0];
textField.backgroundColor = [UIColor orangeColor];
*/
// 消息机制 几秒之后 self 去执行alertViewDismiss这个方法 传入的参数是alertView
//[self performSelector:@selector(alertViewDismiss:) withObject:alertView afterDelay:3];
// 让alertView展示出来
// alertView层级 是最高的 不需要刻意添加
[alertView show];
[alertView release];
//NSLog(@"button1");
}
else if (button.tag == 200)
{
UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:@"提示" message:@"是否登录" delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"确定",@"哈哈", nil];
alertView.tag = 400;
[alertView show];
[alertView release];
// NSLog(@"button2");
}
//NSLog(@"发送消息");
//self.window.backgroundColor = [UIColor greenColor];
}
#pragma mark --- alertView消失---
- (void)alertViewDismiss:(UIAlertView *)alertView
{
[alertView dismissWithClickedButtonIndex:0 animated:YES];
}
- (BOOL)textFieldShouldReturn:(UITextField *)textField
{
// 取消第一响应者
[self.textField resignFirstResponder];
return YES;
}
#pragma mark --- 点击空白处回收键盘 ---
//// 点击空白处 回收键盘
//- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *)event
//{
// //self.textField = self.window.subviews[0];
// [self.textField resignFirstResponder];
//}
程序启动步骤
- (void)applicationWillResignActive:(UIApplication *)application
{
// NSLog(@"将要进入到非活跃状态 就是将要进入到后台");
}
- (void)applicationDidEnterBackground:(UIApplication *)applicatio
{
// NSLog(@"已经进入到非活跃状态 就是已经进入到后台");
}
- (void)applicationWillEnterForeground:(UIApplication *)application
{
// NSLog(@"将要进入到活跃状态 就是将要进入到前台");
}
- (void)applicationDidBecomeActive:(UIApplication *)application
{
// NSLog(@"已经进入到活跃状态 已经进入到前台");
}
- (void)applicationWillTerminate:(UIApplication *)application
{
// NSLog(@"将要退出应用程序 就是滑飞");
}
