UI之UIAlertView--提示框

普通弹窗

#import "AppDelegate.h"

@interface AppDelegate ()
@end
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    
    self.window = [[UIWindow alloc]initWithFrame:[[UIScreen mainScreen]bounds]];
    self.window.backgroundColor = [UIColor whiteColor];
    [self.window makeKeyAndVisible];
    
    // 新建提示框 (小诀窍：用换行符来撑大UIAlert)
    UIAlertView* alert = [[UIAlertView alloc]initWithTitle:@"提示框" message:@"hello word!









" delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil];
    // 设置Alert的样式（一个文本输入框，一个密码框）
    [alert setAlertViewStyle:UIAlertViewStyleLoginAndPasswordInput];
//    typedef  enum{
//        UIAlertViewStyleDefault, // 默认样式
//        UIAlertViewStyleLoginAndPasswordInput, // 有登陆效果的提示框（一个文本输入框，一个密码输入框）
//        UIAlertViewStylePlainTextInput, // 文本输入框
//        UIAlertViewStyleSecureTextInput // 密码输入框
//    }UIAlertViewStyle
    
    // 创建UITextField来关联UIAlert的输入框并设置键盘响应的样式
    UITextField* field = [alert textFieldAtIndex:0];
    UITextField* field2 = [alert textFieldAtIndex:1];
    // 设置键盘类型
    field.keyboardType = UIKeyboardTypeNumberPad;
    field2.keyboardType = UIKeyboardTypeNumbersAndPunctuation;
    
    // 添加子视图 [UIAlert需都为nil] (加载控件) UIActivityIndicatorView
    UIActivityIndicatorView* activeView = [[UIActivityIndicatorView alloc]initWithActivityIndicatorStyle:UIActivityIndicatorViewStyleWhiteLarge];
    activeView.center = CGPointMake(alert.bounds.size.width/2.0f, alert.bounds.size.height-40.f);
    [activeView startAnimating];
    [alert addSubview:activeView];
    alert.backgroundColor = [UIColor redColor];
    // 展示提示框
    [alert show];

    return YES;
}

UIButton弹窗

#import "AppDelegate.h"

@interface AppDelegate ()<UIAlertViewDelegate> // 签UIAlertViewDelegate协议
 // 协议方法按住comm键，用鼠标点进去看
@end
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch
    self.window = [[UIWindow alloc]initWithFrame:[[UIScreen mainScreen]bounds]];
    self.window.backgroundColor = [UIColor whiteColor];
    [self.window makeKeyAndVisible];
    
    // 设置按钮，并初始化位置及大小
    UIButton* button = [[UIButton alloc]initWithFrame:CGRectMake(20, 20, 80, 30)];
    // 设置按钮背景颜色
    button.backgroundColor = [UIColor blueColor];
    // 设置显示文本及状态
    [button setTitle:@"AlertView" forState:UIControlStateNormal];
    // 添加按钮点击事件
    [button addTarget:self action:@selector(showAlert:) forControlEvents:UIControlEventTouchUpInside];
    // 添加按钮倒窗口
    [self.window addSubview:button];
    return YES;
}
// 响应按钮点击事件
// 提示框也可以自定义，使用UI View及各种空件的排列组合实现
// Title:标题；message:内容；delegate:代理；其他的是按钮，按钮可以多个也可以没有
- (void)showAlert:(id)sender{
    // 索引时，“确定”的下标为0，“取消”的下标为1，以此类推。但显示时，@”确定“排列在最后，其他的安顺序排列
    UIAlertView* alert = [[UIAlertView alloc]initWithTitle:@"提示" message:@"提示内容" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:@"取消", nil];
    
    /* 如果设置按钮为空时，想让提示框消失可以使用延时器设置好间隔时间让提示框自动消失；
     UIAlertView* alert = [[UIAlertView alloc]initWithTitle:@"提示" message:@"提示内容" delegate:self cancelButtonTitle:nil otherButtonTitles:nil];
     // 延时器 ， repeats：循环  监听dian:事件
     [NSTimer scheduledTimerWithTimeInterval:2.0f target:self selector:@selector(dian:) userInfo:aler repeats:NO]; */
    // 展示提示框
    [alert show];
}
/* - (void)dian:(NSTimer*)sender{
    NSLog(@"监视器");
    NSLog(@"%@",sender.userInfo);
    // 取消提示框  sender.userInfo提示框对象
    [sender.userInfo dismissWithClickedButtonIndex:0 animated:YES];
} */

// 使用UIAlertViewDelegate协议方法
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
    // 点击按钮后，获取按钮的索引值
    switch (buttonIndex) {
        case 0:{
            // 点击按钮后可以执行操作，如跳转页面......等等
            NSLog(@"您点击了确定按钮");
            break;
        }case 1:{
            NSLog(@"您点击了取消按钮");
        }
        default:
            break;
    }
}
// 实现取消按钮的监听
- (void)alertViewCancel:(UIAlertView *)alertView{
    NSLog(@"您点击的取消按钮!!!");
}

代理弹窗

#import "AppDelegate.h"

@interface AppDelegate () <UIAlertViewDelegate> // 签UIAlertViewDelegate协议
// 协议方法按住comm键，用鼠标点进去看
@end
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch
    self.window = [[UIWindow alloc]initWithFrame:[[UIScreen mainScreen]bounds]];
    self.window.backgroundColor = [UIColor whiteColor];
    [self.window makeKeyAndVisible];

    UIAlertView* alert = [[UIAlertView alloc]initWithTitle:@"提示框" message:@"hello word!" delegate:self cancelButtonTitle:[self noButtonTitle] otherButtonTitles:[self yesButtonTitle], nil];
    // 展示提示框
    [alert show];
    
    return YES;
}
// yes按钮
- (NSString*)yesButtonTitle{
    return @"Yes";
}
// no按钮
- (NSString*)noButtonTitle{
    return @"No";
}
// 判断用户按下的是Yes还是No (代理方法)
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{
    NSString* buttonTitle = [alertView buttonTitleAtIndex:buttonIndex];
    if ([buttonTitle isEqualToString:[self yesButtonTitle]]) {
        NSLog(@"User pressed the Yes button");
    }else if([buttonTitle isEqualToString:[self noButtonTitle]]){
        NSLog(@"User pressed the No button");
    }
}