iOS6、7、8、9新特性总汇和适配说明 (17)

日期：2021-11-22 栏目：程序人生浏览：次

@property (nonatomic, readonly) NSArray *textFields;

@property (nonatomic, copy) NSString *title;

@property (nonatomic, copy) NSString *message;

@property (nonatomic, readonly) UIAlertControllerStyle preferredStyle;

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简单实用示例：

Crayon Syntax Highlighter v2.7.1

// 1.创建提示框对象，默认是actionSheet效果

UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"注意" message:@"我的呈现方式变了" preferredStyle:UIAlertControllerStyleAlert];

// 2.创建取消按钮并添加到提示框上

[alert addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {

NSLog(@"取消按钮被点击了");

}]];

// 3.呈现提示框

[self presentViewController:alert animated:YES completion:nil];

// 1.创建提示框对象，默认是actionSheet效果

UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"注意" message:@"我的呈现方式变了" preferredStyle:UIAlertControllerStyleAlert];

// 2.创建取消按钮并添加到提示框上

[alert addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {

NSLog(@"取消按钮被点击了");

}]];

// 3.呈现提示框

[self presentViewController:alert animated:YES completion:nil];

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二、UIPopoverController直接通过present方式呈现

UIViewController.h

Crayon Syntax Highlighter v2.7.1

typedef NS_ENUM(NSInteger, UIModalPresentationStyle) {

UIModalPresentationFullScreen = 0,

UIModalPresentationPageSheet NS_ENUM_AVAILABLE_IOS(3_2),

UIModalPresentationFormSheet NS_ENUM_AVAILABLE_IOS(3_2),

UIModalPresentationCurrentContext NS_ENUM_AVAILABLE_IOS(3_2),

UIModalPresentationCustom NS_ENUM_AVAILABLE_IOS(7_0),

UIModalPresentationOverFullScreen NS_ENUM_AVAILABLE_IOS(8_0),

UIModalPresentationOverCurrentContext NS_ENUM_AVAILABLE_IOS(8_0),

UIModalPresentationPopover NS_ENUM_AVAILABLE_IOS(8_0),

UIModalPresentationNone NS_ENUM_AVAILABLE_IOS(7_0) = -1,

};

@property (nonatomic,readonly) UIPopoverPresentationController *popoverPresentationController NS_AVAILABLE_IOS(8_0);