使用与iOS8 以后，只是把系统的UIAlertController进行了封装，省的每次用的时候要写很多的代码。封装后只需要一句代码即可 , deome 地址
：https://github.com/liguoliangiOS/LGLAlertView.git
上代码LGLAlertView.h：
#import <Foundation/Foundation.h> #import <UIKit/UIKit.h> typedef NS_ENUM(NSInteger, LGLAlertViewActionStyle) { LGLAlertViewActionStyleDefault = 0, LGLAlertViewActionStyleCancel, LGLAlertViewActionStyleDestructive }; /** alertView的回调block */ typedef void (^CallBackBlock)(NSInteger btnIndex); /** alertView的回调block */ typedef void (^TextFieldCallBackBlock)(NSString * text); @interface LGLAlertView : NSObject /** * 单个或者没有按钮 不执行任何操作 只是提示总用 * @param title 提示的标题 * @param message 提示信息 * @param btnTitle 单个按钮的标题名称 * */ + (void)showAlertViewWith:(UIViewController *)viewController title:(NSString *)title message:(NSString *)message buttonTitle:(NSString *)btnTitle buttonStyle:(LGLAlertViewActionStyle)buttonStyle; /** * 有两个或者多个按钮 确定 取消 * @param title 提示的标题 * @param message 提示信息 * @param btnTitle 单个按钮的标题名称 * @param cancelButtonTitle 取消按钮 * @param destructiveBtn destructiveBtn按钮 * @param otherButtonTitles 确定按钮 */ + (void)showAlertViewWith:(UIViewController *)viewController title:(NSString *)title message:(NSString *)message CallBackBlock:(CallBackBlock)textBlock cancelButtonTitle:(NSString *)cancelBtnTitle destructiveButtonTitle:(NSString *)destructiveBtnTitle otherButtonTitles:(NSString *)otherBtnTitles,...NS_REQUIRES_NIL_TERMINATION; /** * 有输入框 确定 取消 (注： 这里只做了有一个输入框) * @param title 提示的标题 * @param message 提示信息 * @param btnTitle 单个按钮的标题名称 * @param cancelButtonTitle 取消按钮 * @param destructiveBtn destructiveBtn按钮 * @param otherButtonTitles 确定按钮 */ + (void)showAlertTextFieldViewWith:(UIViewController *)viewController title:(NSString *)title message:(NSString *)message TextFeildCallBackBlock:(TextFieldCallBackBlock)block cancelButtonTitle:(NSString *)cancelBtnTitle otherButtonTitles:(NSString *)otherBtnTitle; /** * 单个或者没有按钮ActionSheet 仅仅只是提示作用 按钮没有响应事件 * @param title 提示的标题 * @param message 提示信息 * @param btnTitle 单个按钮的标题名称 * */ + (void)showAlertActionSheetViewWith:(UIViewController *)viewController title:(NSString *)title message:(NSString *)message buttonTitle:(NSString *)btnTitle buttonStyle:(LGLAlertViewActionStyle)buttonStyle; /** * 没有按钮ActionSheet 按钮有响应事件 * @param title 提示的标题 * @param message 提示信息 * @param btnTitle 单个按钮的标题名称 * */ + (void)showAlertActionSheetWith:(UIViewController *)viewController title:(NSString *)title message:(NSString *)message callbackBlock:(CallBackBlock)block destructiveButtonTitle:(NSString *)destructiveBtnTitle cancelButtonTitle:(NSString *)cancelBtnTitle otherButtonTitles:(NSString *)otherBtnTitles, ...NS_REQUIRES_NIL_TERMINATION; @end
LGLAlertView.m:文件
#import "LGLAlertView.h" #define LGLAlertShowTime 1.0 @implementation LGLAlertView // ======================================================================== ----- AlertView start----- ================================================================================== // 单个或没有按钮 + (void)showAlertViewWith:(UIViewController *)viewController title:(NSString *)title message:(NSString *)message buttonTitle:(NSString *)btnTitle buttonStyle:(LGLAlertViewActionStyle)buttonStyle { UIAlertController * alertController = [UIAlertController alertControllerWithTitle:title message:message preferredStyle:UIAlertControllerStyleAlert]; if (btnTitle.length) { UIAlertActionStyle actionStyle = (buttonStyle == LGLAlertViewActionStyleDefault) ? UIAlertActionStyleDefault : ((buttonStyle == LGLAlertViewActionStyleCancel) ? UIAlertActionStyleCancel : UIAlertActionStyleDestructive); UIAlertAction * alertAction = alertAction = [UIAlertAction actionWithTitle:btnTitle style:actionStyle handler:^(UIAlertAction * _Nonnull action) { [self performSelector:@selector(dismissAlertController:) withObject:alertController afterDelay:LGLAlertShowTime]; }];; [alertController addAction:alertAction]; [viewController presentViewController:alertController animated:YES completion:nil]; } else { [viewController presentViewController:alertController animated:YES completion:nil]; [self performSelector:@selector(dismissAlertController:) withObject:alertController afterDelay:LGLAlertShowTime]; } } // 单个或多个按钮 + (void)showAlertViewWith:(UIViewController *)viewController title:(NSString *)title message:(NSString *)message CallBackBlock:(CallBackBlock)block cancelButtonTitle:(NSString *)cancelBtnTitle destructiveButtonTitle:(NSString *)destructiveBtnTitle otherButtonTitles:(NSString *)otherBtnTitles,... { UIAlertController * alertController = [UIAlertController alertControllerWithTitle:title message:message preferredStyle:UIAlertControllerStyleAlert]; //添加按钮 if (cancelBtnTitle.length) { UIAlertAction * cancelAction = [UIAlertAction actionWithTitle:cancelBtnTitle style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) { block(0); }]; [alertController addAction:cancelAction]; } if (destructiveBtnTitle.length) { UIAlertAction * destructiveAction = [UIAlertAction actionWithTitle:destructiveBtnTitle style:UIAlertActionStyleDestructive handler:^(UIAlertAction * _Nonnull action) { block(1); }]; [alertController addAction:destructiveAction]; } if (otherBtnTitles.length) { UIAlertAction *otherActions = [UIAlertAction actionWithTitle:otherBtnTitles style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) { (!cancelBtnTitle.length && !destructiveBtnTitle.length) ? block(0) : (((cancelBtnTitle.length && !destructiveBtnTitle.length) || (!cancelBtnTitle.length && destructiveBtnTitle.length)) ? block(1) : block(2)); }]; [alertController addAction:otherActions]; va_list args; va_start(args, otherBtnTitles); if (otherBtnTitles.length) { NSString * otherString; int index = 2; (!cancelBtnTitle.length && !destructiveBtnTitle.length) ? (index = 0) : ((cancelBtnTitle.length && !destructiveBtnTitle.length) || (!cancelBtnTitle.length && destructiveBtnTitle.length) ? (index = 1) : (index = 2)); while ((otherString = va_arg(args, NSString*))) { index ++ ; UIAlertAction * otherActions = [UIAlertAction actionWithTitle:otherString style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) { block(index); }]; [alertController addAction:otherActions]; } } va_end(args); } [viewController presentViewController:alertController animated:YES completion:nil]; //如果没有按钮，自动延迟消失 if (!cancelBtnTitle.length && !destructiveBtnTitle.length && !otherBtnTitles) { //此时self指本类 [self performSelector:@selector(dismissAlertController:) withObject:alertController afterDelay:LGLAlertShowTime]; } } // 有输入框 + (void)showAlertTextFieldViewWith:(UIViewController *)viewController title:(NSString *)title message:(NSString *)message TextFeildCallBackBlock:(TextFieldCallBackBlock)textBlock cancelButtonTitle:(NSString *)cancelBtnTitle otherButtonTitles:(NSString *)otherBtnTitle { UIAlertController * alertController = [UIAlertController alertControllerWithTitle:title message:message preferredStyle:UIAlertControllerStyleAlert]; [alertController addTextFieldWithConfigurationHandler:^(UITextField *textField) { }]; if (cancelBtnTitle.length) { UIAlertAction * cancelAction = [UIAlertAction actionWithTitle:cancelBtnTitle style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) { [self dismissAlertController:alertController]; }]; [alertController addAction:cancelAction]; } if (otherBtnTitle.length) { UIAlertAction * otherAction = [UIAlertAction actionWithTitle:otherBtnTitle style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) { textBlock([alertController.textFields firstObject].text); }]; [alertController addAction:otherAction]; } [viewController presentViewController:alertController animated:YES completion:nil]; //如果没有按钮，自动延迟消失 if (!cancelBtnTitle.length && !otherBtnTitle.length) { //此时self指本类 [self performSelector:@selector(dismissAlertController:) withObject:alertController afterDelay:LGLAlertShowTime]; } } // ======================================================================== ----- AlertView end----- ================================================================================== #pragma mark ==== 点击事件 ====== + (void)dismissAlertController:(UIAlertController *)alert { [alert dismissViewControllerAnimated:YES completion:nil]; } // ======================================================================== -- ActionSheet Start -- ==================================================================================== + (void)showAlertActionSheetViewWith:(UIViewController *)viewController title:(NSString *)title message:(NSString *)message buttonTitle:(NSString *)btnTitle buttonStyle:(LGLAlertViewActionStyle)buttonStyle { UIAlertController * actionController = [UIAlertController alertControllerWithTitle:title message:message preferredStyle:UIAlertControllerStyleActionSheet]; if (btnTitle.length) { UIAlertActionStyle actionStyle = (buttonStyle == LGLAlertViewActionStyleDefault) ? UIAlertActionStyleDefault : ((buttonStyle == LGLAlertViewActionStyleCancel) ? UIAlertActionStyleCancel : UIAlertActionStyleDestructive); UIAlertAction * alertAction = alertAction = [UIAlertAction actionWithTitle:btnTitle style:actionStyle handler:^(UIAlertAction * _Nonnull action) { [self performSelector:@selector(dismissAlertController:) withObject:actionController afterDelay:LGLAlertShowTime]; }];; [actionController addAction:alertAction]; [viewController presentViewController:actionController animated:YES completion:nil]; } else { [viewController presentViewController:actionController animated:YES completion:nil]; //如果没有按钮，自动延迟消失 [self performSelector:@selector(dismissAlertController:) withObject:actionController afterDelay:LGLAlertShowTime]; } } + (void)showAlertActionSheetWith:(UIViewController *)viewController title:(NSString *)title message:(NSString *)message callbackBlock:(CallBackBlock)block destructiveButtonTitle:(NSString *)destructiveBtnTitle cancelButtonTitle:(NSString *)cancelBtnTitle otherButtonTitles:(NSString *)otherBtnTitles, ... { UIAlertController * actionController = [UIAlertController alertControllerWithTitle:title message:message preferredStyle:UIAlertControllerStyleActionSheet]; //添加按钮 if (destructiveBtnTitle.length) { UIAlertAction *destructiveAction = [UIAlertAction actionWithTitle:destructiveBtnTitle style:UIAlertActionStyleDestructive handler:^(UIAlertAction * _Nonnull action) { block(0); }]; [actionController addAction:destructiveAction]; } if (cancelBtnTitle.length) { UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:cancelBtnTitle style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) { destructiveBtnTitle.length ? block(1) : block(0); }]; [actionController addAction:cancelAction]; } if (otherBtnTitles.length) { UIAlertAction *otherActions = [UIAlertAction actionWithTitle:otherBtnTitles style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) { (!cancelBtnTitle.length && !destructiveBtnTitle.length) ? block(0) : (((destructiveBtnTitle.length && !cancelBtnTitle.length) || (!destructiveBtnTitle.length && cancelBtnTitle.length)) ? block(1) : block(2)); }]; [actionController addAction:otherActions]; va_list args; va_start(args, otherBtnTitles); if (otherBtnTitles.length) { NSString * otherString; int index = 2; (!cancelBtnTitle.length && !destructiveBtnTitle.length) ? (index = 0) : ((cancelBtnTitle.length && !destructiveBtnTitle.length) || (!cancelBtnTitle.length && destructiveBtnTitle.length) ? (index = 1) : (index = 2)); while ((otherString = va_arg(args, NSString*))) { index ++ ; UIAlertAction * otherActions = [UIAlertAction actionWithTitle:otherString style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) { block(index); }]; [actionController addAction:otherActions]; } } va_end(args); } [viewController presentViewController:actionController animated:YES completion:nil]; //如果没有按钮，自动延迟消失 if (!cancelBtnTitle.length && !destructiveBtnTitle.length && !otherBtnTitles.length) { //此时self指本类 [self performSelector:@selector(dismissAlertController:) withObject:actionController afterDelay:LGLAlertShowTime]; } } @end
以上所述是小编给大家介绍的iOS中 LGLAlertView 提示框的实例代码，希望对大家有所帮助，如果大家有任何疑问请给我们留言，小编会及时回复大家的。在此也非常感谢大家对查字典教程网的支持！
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