iOS-UIKit框架学习—UIAlertView

使用UIAlertView类向用户显示一条警告消息。警报视图的功能相似，但在外观上不同于一个动作表（UIActionSheet的一个实例）。

@protocol UIAlertViewDelegate;
// iOS 2.0 - iOS 9.0可用 使用UIAlertController顶替
NS_CLASS_DEPRECATED_IOS(2_0, 9_0, "UIAlertView is deprecated. Use UIAlertController with a preferredStyle of UIAlertControllerStyleAlert instead") __TVOS_PROHIBITED
@interface UIAlertView : UIView

// 初始化设置标题、代理、操作按钮
- (instancetype)initWithTitle:(nullable NSString *)title message:(nullable NSString *)message delegate:(nullable id /*<UIAlertViewDelegate>*/)delegate cancelButtonTitle:(nullable NSString *)cancelButtonTitle otherButtonTitles:(nullable NSString *)otherButtonTitles, ... NS_REQUIRES_NIL_TERMINATION NS_EXTENSION_UNAVAILABLE_IOS("Use UIAlertController instead.");
// 初始化设置frame
- (id)initWithFrame:(CGRect)frame NS_DESIGNATED_INITIALIZER;
- (nullable instancetype) initWithCoder:(nonnull NSCoder *)aDecoder NS_DESIGNATED_INITIALIZER;
// 代理
@property(nullable,nonatomic,weak) id /*<UIAlertViewDelegate>*/ delegate;
// 标题
@property(nonatomic,copy) NSString *title;
// 提示内容
@property(nullable,nonatomic,copy) NSString *message;

// 在提示框中添加自定义按钮
- (NSInteger)addButtonWithTitle:(nullable NSString *)title;
// 返回指定索引按钮的标题
- (nullable NSString *)buttonTitleAtIndex:(NSInteger)buttonIndex;
@property(nonatomic,readonly) NSInteger numberOfButtons;
// 操作栏的按钮数
@property(nonatomic) NSInteger cancelButtonIndex;
// 第一个更多按钮的下标
@property(nonatomic,readonly) NSInteger firstOtherButtonIndex;
// 接收器是否显示
@property(nonatomic,readonly,getter=isVisible) BOOL visible;
// 显示提示框
- (void)show;
// 隐藏提示框
- (void)dismissWithClickedButtonIndex:(NSInteger)buttonIndex animated:(BOOL)animated;

// 提示框的风格
@property(nonatomic,assign) UIAlertViewStyle alertViewStyle NS_AVAILABLE_IOS(5_0);
// 返回指定索引的文本框
- (nullable UITextField *)textFieldAtIndex:(NSInteger)textFieldIndex NS_AVAILABLE_IOS(5_0);


@end

__TVOS_PROHIBITED
@protocol UIAlertViewDelegate <NSObject>
@optional

// 点击操作按钮后调用
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex NS_DEPRECATED_IOS(2_0, 9_0);

// 点击取消按钮后调用
- (void)alertViewCancel:(UIAlertView *)alertView NS_DEPRECATED_IOS(2_0, 9_0);
// 即将弹出提示框之前调用
- (void)willPresentAlertView:(UIAlertView *)alertView NS_DEPRECATED_IOS(2_0, 9_0);
// 提示框弹出后调用
- (void)didPresentAlertView:(UIAlertView *)alertView NS_DEPRECATED_IOS(2_0, 9_0);
// 操作后将要隐藏的提示框时调用
- (void)alertView:(UIAlertView *)alertView willDismissWithButtonIndex:(NSInteger)buttonIndex NS_DEPRECATED_IOS(2_0, 9_0);
// 提示框隐藏完成后调用
- (void)alertView:(UIAlertView *)alertView didDismissWithButtonIndex:(NSInteger)buttonIndex NS_DEPRECATED_IOS(2_0, 9_0);

// 是否启用提示框中第一个非取消按钮
- (BOOL)alertViewShouldEnableFirstOtherButton:(UIAlertView *)alertView NS_DEPRECATED_IOS(2_0, 9_0);

@end

// 提示框风格
typedef NS_ENUM(NSInteger, UIAlertViewStyle) {
UIAlertViewStyleDefault = 0, // 默认
UIAlertViewStyleSecureTextInput, // 有密码输入框
UIAlertViewStylePlainTextInput, // 普通文本输入框
UIAlertViewStyleLoginAndPasswordInput // 登陆框
} __TVOS_PROHIBITED;