自从iOS9出来之后，需要使用UIAlertController来弹出弹框，不在提倡使用UIAlertView了，UIAlertController
， 这个类怎么说好呢，确实方便我们管理弹框，但是这个类必须在UIViewController
上面presentViewController弹出，没UIAlertView使用方便。
那么出现这个问题了，就得想有没有什么好的方式去解决，让UIAlertController使用起来跟UIAlertView
一样的方便，第一个问题，用继承还是类别，现在的目的是所有类都能直接调用，尤其是没有UI的类，所以用类别，
第二个问题，类别是哪个类，要想所有的类都能使用，方便简单的调用，那就得所有类的父类，NSObject
第三个问题，iOS系统版本，既然是好用，那就得适配的版本要尽量多，
所以，
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#import#import#if __IPHONE_OS_VERSION_MAX_ALLOWED < __IPHONE_8_0#define IPHONE_OS_VERSION_MIN_IPHONE_8_0 //less than 8.0#else#define IPHONE_OS_VERSION_MAX_IPHONE_8_0 //greater than or equal to 8.0#endif#define NO_USE -1000typedef void(^click)(NSInteger index);typedef void(^configuration)(UITextField *field, NSInteger index);typedef void(^clickHaveField)(NSArray*fields, NSInteger index);@interface NSObject (LZAlertView)#ifdef IPHONE_OS_VERSION_MIN_IPHONE_8_0#endif/*! * use alert * * @param title title * @param message message * @param others other button title * @param animated animated * @param click button action */- (void)YXBAlertWithTitle:(NSString *)title message:(NSString *)message andOthers:(NSArray*)others animated:(BOOL)animated action:(click)click;/*! * use action sheet * * @param title title * @param message message just system verson max or equal 8.0. * @param destructive button title is red color * @param destructiveAction destructive action * @param others other button * @param animated animated * @param click other button action */- (void)YXBActionSheetWithTitle:(NSString *)title message:(NSString *)message destructive:(NSString *)destructive destructiveAction:(click )destructiveAction andOthers:(NSArray*)others animated:(BOOL )animated action:(click )click;/*! * use alert include textField * * @param title title * @param message message * @param buttons buttons * @param number number of textField * @param configuration configuration textField property * @param animated animated * @param click button action */- (void)YXBAlertWithTitle:(NSString *)title message:(NSString *)message buttons:(NSArray*)buttons
textFieldNumber:(NSInteger )number
configuration:(configuration )configuration
animated:(BOOL )animated
action:(clickHaveField )click;
@end
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.m文件
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//// NSObject+LZAlertView.m// jglz//// Created by jglz on 16/6/12.// Copyright © 2016年 yxb. All rights reserved.//#import "NSObject+LZAlertView.h"#import "AppDelegate.h"#ifdef IPHONE_OS_VERSION_MIN_IPHONE_8_0static click clickIndex = nil;static clickHaveField clickIncludeFields = nil;static click clickDestructive = nil;#endifstatic NSMutableArray *fields = nil;@implementation NSObject (LZAlertView)#pragma mark - ***** alert view- (void)YXBAlertWithTitle:(NSString *)title message:(NSString *)message andOthers:(NSArray*)others animated:(BOOL)animated action:(click)click{#ifdef IPHONE_OS_VERSION_MAX_IPHONE_8_0 UIAlertController *alertController = [UIAlertController alertControllerWithTitle:title message:message preferredStyle:UIAlertControllerStyleAlert]; [others enumerateObjectsUsingBlock:^(NSString * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) { if (idx == 0) { [alertController addAction:[UIAlertAction actionWithTitle:obj style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) { if (action) { click(idx); } }]]; } else { [alertController addAction:[UIAlertAction actionWithTitle:obj style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) { if (action) { click(idx); } }]]; } }];// NSLog(@"%@",[[self currentViewController] class]); UIViewController *vc =[self currentViewController]; [vc presentViewController:alertController animated:YES completion:nil];#else UIAlertView *alertView = nil; if (others.count > 0) { alertView = [[UIAlertView alloc] initWithTitle:title message:message delegate:self cancelButtonTitle:others[0] otherButtonTitles: nil]; } else { alertView = [[UIAlertView alloc] initWithTitle:title message:message delegate:nil cancelButtonTitle:nil otherButtonTitles: nil]; } [others enumerateObjectsUsingBlock:^(NSString * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) { if (idx != 0) { [alertView adButtonWithTitle:obj]; } }]; clickIndex = click; [alertView show];#endif}#pragma mark - ***** alertView delegate#ifdef IPHONE_OS_VERSION_MIN_IPHONE_8_0- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{ if (clickIndex) { clickIndex(buttonIndex); } else if (clickIncludeFields) { clickIncludeFields(fields,buttonIndex); } clickIndex = nil; clickIncludeFields = nil;}#endif#pragma mark - ***** sheet- (void)YXBActionSheetWithTitle:(NSString *)title message:(NSString *)message destructive:(NSString *)destructive destructiveAction:(click )destructiveAction andOthers:(NSArray*)others animated:(BOOL )animated action:(click )click{#ifdef IPHONE_OS_VERSION_MAX_IPHONE_8_0 UIAlertController *alertController = [UIAlertController alertControllerWithTitle:title message:message preferredStyle:UIAlertControllerStyleActionSheet]; [alertController addAction:[UIAlertAction actionWithTitle:destructive style:UIAlertActionStyleDestructive handler:^(UIAlertAction * _Nonnull action) { if (action) { destructiveAction(NO_USE); } }]]; [others enumerateObjectsUsingBlock:^(NSString * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) { if (idx == 0) { [alertController addAction:[UIAlertAction actionWithTitle:obj style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) { if (action) { click(idx); } }]]; } else { [alertController addAction:[UIAlertAction actionWithTitle:obj style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) { if (action) { click(idx); } }]]; } }]; UIViewController *vc =[self currentViewController]; [vc presentViewController:alertController animated:animated completion:nil];#else UIActionSheet *sheet = nil; if (others.count > 0) { sheet = [[UIActionSheet alloc] initWithTitle:title delegate:self cancelButtonTitle:others[0] destructiveButtonTitle:destructive otherButtonTitles:nil]; } else { sheet = [[UIActionSheet alloc] initWithTitle:title delegate:nil cancelButtonTitle:nil destructiveButtonTitle:destructive otherButtonTitles:nil]; } [others enumerateObjectsUsingBlock:^(NSString * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) { if (idx != 0) { [sheet addButtonWithTitle:obj]; } }]; clickIndex = click; clickDestructive = destructiveAction; [sheet showInView:self.view];#endif}#ifdef IPHONE_OS_VERSION_MIN_IPHONE_8_0- (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex{ if (buttonIndex == 0) { if (clickDestructive) { clickDestructive(NO_USE); } } else { if (clickIndex) { clickIndex(buttonIndex - 1); } }}#endif#pragma mark - ***** textField- (void)YXBAlertWithTitle:(NSString *)title message:(NSString *)message buttons:(NSArray*)buttons
textFieldNumber:(NSInteger )number
configuration:(configuration )configuration
animated:(BOOL )animated
action:(clickHaveField )click
{
if (fields == nil)
{
fields = [NSMutableArray array];
}
else
{
[fields removeAllObjects];
}
#ifdef IPHONE_OS_VERSION_MAX_IPHONE_8_0
UIAlertController *alertController = [UIAlertController alertControllerWithTitle:title message:message preferredStyle:UIAlertControllerStyleAlert];
// textfield
for (NSInteger i = 0; i < number; i++)
{
[alertController addTextFieldWithConfigurationHandler:^(UITextField * _Nonnull textField) {
[fields addObject:textField];
configuration(textField,i);
}];
}
// button
[buttons enumerateObjectsUsingBlock:^(NSString * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
if (idx == 0)
{
[alertController addAction:[UIAlertAction actionWithTitle:obj style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
if (action)
{
click(fields,idx);
}
}]];
}
else
{
[alertController addAction:[UIAlertAction actionWithTitle:obj style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
if (action)
{
click(fields,idx);
}
}]];
}
}];
UIViewController *vc =[self currentViewController];
[vc presentViewController:alertController animated:animated completion:nil];
#else
UIAlertView *alertView = nil;
if (buttons.count > 0)
{
alertView = [[UIAlertView alloc] initWithTitle:title message:message delegate:self cancelButtonTitle:buttons[0] otherButtonTitles:nil];
}
else
{
alertView = [[UIAlertView alloc] initWithTitle:title message:message delegate:nil cancelButtonTitle:nil otherButtonTitles:nil];
}
// field
if (number == 1)
{
alertView.alertViewStyle = UIAlertViewStylePlainTextInput;
}
else if (number > 2)
{
alertView.alertViewStyle = UIAlertViewStyleLoginAndPasswordInput;
}
// configuration field
if (alertView.alertViewStyle == UIAlertViewStyleLoginAndPasswordInput)
{
[fields addObject:[alertView textFieldAtIndex:0]];
[fields addObject:[alertView textFieldAtIndex:1]];
configuration([alertView textFieldAtIndex:0],0);
configuration([alertView textFieldAtIndex:1],1);
}
else if(alertView.alertViewStyle == UIAlertViewStylePlainTextInput || alertView.alertViewStyle == UIAlertViewStyleSecureTextInput)
{
[fields addObject:[alertView textFieldAtIndex:0]];
configuration([alertView textFieldAtIndex:0],0);
}
// other button
[buttons enumerateObjectsUsingBlock:^(NSString * _Nonnull obj, NSUInteger idx, BOOL * _Nonnull stop) {
if (idx != 0)
{
[alertView addButtonWithTitle:obj];
}
}];
clickIncludeFields = click;
[alertView show];
#endif
}
- (UIViewController *)currentViewController
{
AppDelegate *app = [UIApplication sharedApplication].delegate;
UIViewController *vc = app.window.rootViewController;
if ([vc isKindOfClass:[UITabBarController class]]) {
UITabBarController *tab = (UITabBarController *)vc;
if ([tab.selectedViewController isKindOfClass:[UINavigationController class]]) {
UINavigationController *nav = (UINavigationController *)tab.selectedViewController;
return [nav.viewControllers lastObject];
} else {
return tab.selectedViewController;
}
} else if ([vc isKindOfClass:[UINavigationController class]]) {
UINavigationController *nav = (UINavigationController *)vc;
return [nav.viewControllers lastObject];
} else {
return vc;
}
return vc;
}
@end
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