iOS開發 提示框UIAlertController的略微封裝
阿新 • • 發佈：2019-01-03
之前寫的程式碼，把UIAlertView的封裝剔除之後，發現UIAlertController 封裝的意義不是很大了，畢竟蘋果公司封裝的已經夠好了，好了，上程式碼
// // XSDAlertViewTools.h // XSDSH 提示框工具類 // // Created by 小廣 on 16/1/11. // Copyright © 2016年 XSD. All rights reserved. // #import <Foundation/Foundation.h> #define cancelIndex (-1) typedef void(^AlertViewBlock)(NSInteger buttonTag); @interface XSDAlertViewTools : NSObject + (XSDAlertViewTools *)shareInstance; /** * 建立提示框 * * @param title 標題 * @param message 提示內容 * @param cancelTitle 取消按鈕(無操作,為nil則只顯示一個按鈕) * @param titleArray 標題字串陣列(為nil,預設為"確定") * @param vc VC iOS8及其以後會用到 * @param confirm 點選按鈕的回撥(取消按鈕的Index是cancelIndex -1) */ - (void)showAlert:(NSString *)title message:(NSString *)message cancelTitle:(NSString *)cancelTitle titleArray:(NSArray *)titleArray viewController:(UIViewController *)vc confirm:(AlertViewBlock)confirm; /** * 建立提示框(可變引數版) * * @param title 標題 * @param message 提示內容 * @param cancelTitle 取消按鈕(無操作,為nil則只顯示一個按鈕) * @param vc VC iOS8及其以後會用到 * @param confirm 點選按鈕的回撥(取消按鈕的Index是cancelIndex -1) * @param buttonTitles 按鈕(為nil,預設為"確定",傳引數時必須以nil結尾，否則會崩潰) */ - (void)showAlert:(NSString *)title message:(NSString *)message cancelTitle:(NSString *)cancelTitle viewController:(UIViewController *)vc confirm:(AlertViewBlock)confirm buttonTitles:(NSString *)buttonTitles, ... NS_REQUIRES_NIL_TERMINATION; /** * 建立選單(Sheet) * * @param title 標題 * @param message 提示內容 * @param cancelTitle 取消按鈕(無操作,為nil則只顯示一個按鈕) * @param titleArray 標題字串陣列(為nil,預設為"確定") * @param vc VC iOS8及其以後會用到 * @param confirm 點選確認按鈕的回撥(取消按鈕的Index是cancelIndex -1) */ - (void)showSheet:(NSString *)title message:(NSString *)message cancelTitle:(NSString *)cancelTitle titleArray:(NSArray *)titleArray viewController:(UIViewController *)vc confirm:(AlertViewBlock)confirm; /** * 建立選單(Sheet 可變引數版) * * @param title 標題 * @param message 提示內容 * @param cancelTitle 取消按鈕(無操作,為nil則只顯示一個按鈕) * @param vc VC * @param confirm 點選按鈕的回撥(取消按鈕的Index是cancelIndex -1) * @param buttonTitles 按鈕(為nil,預設為"確定",傳引數時必須以nil結尾，否則會崩潰) */ - (void)showSheet:(NSString *)title message:(NSString *)message cancelTitle:(NSString *)cancelTitle viewController:(UIViewController *)vc confirm:(AlertViewBlock)confirm buttonTitles:(NSString *)buttonTitles, ... NS_REQUIRES_NIL_TERMINATION ; @end
.m裡
// // XSDAlertViewTools.m // XSDSH 提示框工具類 // // Created by 小廣 on 16/1/11. // Copyright © 2016年 XSD. All rights reserved. // #import "XSDAlertViewTools.h" #define RootVC [[UIApplication sharedApplication] keyWindow].rootViewController @interface XSDAlertViewTools () @property (nonatomic, copy) AlertViewBlock block; @end @implementation XSDAlertViewTools #pragma mark - 對外方法 + (XSDAlertViewTools *)shareInstance { static XSDAlertViewTools *tools = nil; static dispatch_once_t onceToken; dispatch_once(&onceToken, ^{ tools = [[self alloc] init]; }); return tools; } /** * 建立提示框 * * @param title 標題 * @param message 提示內容 * @param cancelTitle 取消按鈕(無操作,為nil則只顯示一個按鈕) * @param titleArray 標題字串陣列(為nil,預設為"確定") * @param vc VC * @param confirm 點選確認按鈕的回撥 */ - (void)showAlert:(NSString *)title message:(NSString *)message cancelTitle:(NSString *)cancelTitle titleArray:(NSArray *)titleArray viewController:(UIViewController *)vc confirm:(AlertViewBlock)confirm { // if (!vc) vc = RootVC; [self p_showAlertController:title message:message cancelTitle:cancelTitle titleArray:titleArray viewController:vc confirm:^(NSInteger buttonTag) { if (confirm)confirm(buttonTag); }]; } /** * 建立提示框(可變引數版) * * @param title 標題 * @param message 提示內容 * @param cancelTitle 取消按鈕(無操作,為nil則只顯示一個按鈕) * @param vc VC * @param confirm 點選按鈕的回撥 * @param buttonTitles 按鈕(為nil,預設為"確定",傳引數時必須以nil結尾，否則會崩潰) */ - (void)showAlert:(NSString *)title message:(NSString *)message cancelTitle:(NSString *)cancelTitle viewController:(UIViewController *)vc confirm:(AlertViewBlock)confirm buttonTitles:(NSString *)buttonTitles, ... NS_REQUIRES_NIL_TERMINATION { // 讀取可變引數裡面的titles陣列 NSMutableArray *titleArray = [[NSMutableArray alloc] initWithCapacity:0]; va_list list; if(buttonTitles) { //1.取得第一個引數的值(即是buttonTitles) [titleArray addObject:buttonTitles]; //2.從第2個引數開始，依此取得所有引數的值 NSString *otherTitle; va_start(list, buttonTitles); while ((otherTitle = va_arg(list, NSString*))) { [titleArray addObject:otherTitle]; } va_end(list); } if (!vc) vc = RootVC; [self p_showAlertController:title message:message cancelTitle:cancelTitle titleArray:titleArray viewController:vc confirm:^(NSInteger buttonTag) { if (confirm)confirm(buttonTag); }]; } /** * 建立選單(Sheet) * * @param title 標題 * @param message 提示內容 * @param cancelTitle 取消按鈕(無操作,為nil則只顯示一個按鈕) * @param titleArray 標題字串陣列(為nil,預設為"確定") * @param vc VC * @param confirm 點選確認按鈕的回撥 */ - (void)showSheet:(NSString *)title message:(NSString *)message cancelTitle:(NSString *)cancelTitle titleArray:(NSArray *)titleArray viewController:(UIViewController *)vc confirm:(AlertViewBlock)confirm { if (!vc) vc = RootVC; [self p_showSheetAlertController:title message:message cancelTitle:cancelTitle titleArray:titleArray viewController:vc confirm:^(NSInteger buttonTag) { if (confirm)confirm(buttonTag); }]; } /** * 建立選單(Sheet 可變引數版) * * @param title 標題 * @param message 提示內容 * @param cancelTitle 取消按鈕(無操作,為nil則只顯示一個按鈕) * @param vc VC iOS8及其以後會用到 * @param confirm 點選按鈕的回撥 * @param buttonTitles 按鈕(為nil,預設為"確定",傳引數時必須以nil結尾，否則會崩潰) */ - (void)showSheet:(NSString *)title message:(NSString *)message cancelTitle:(NSString *)cancelTitle viewController:(UIViewController *)vc confirm:(AlertViewBlock)confirm buttonTitles:(NSString *)buttonTitles, ... NS_REQUIRES_NIL_TERMINATION { // 讀取可變引數裡面的titles陣列 NSMutableArray *titleArray = [[NSMutableArray alloc] initWithCapacity:0]; va_list list; if(buttonTitles) { //1.取得第一個引數的值(即是buttonTitles) [titleArray addObject:buttonTitles]; //2.從第2個引數開始，依此取得所有引數的值 NSString *otherTitle; va_start(list, buttonTitles); while ((otherTitle= va_arg(list, NSString*))) { [titleArray addObject:otherTitle]; } va_end(list); } if (!vc) vc = RootVC; // 顯示選單提示框 [self p_showSheetAlertController:title message:message cancelTitle:cancelTitle titleArray:titleArray viewController:vc confirm:^(NSInteger buttonTag) { if (confirm)confirm(buttonTag); }]; } #pragma mark - ----------------內部方法------------------ //UIAlertController(iOS8及其以後) - (void)p_showAlertController:(NSString *)title message:(NSString *)message cancelTitle:(NSString *)cancelTitle titleArray:(NSArray *)titleArray viewController:(UIViewController *)vc confirm:(AlertViewBlock)confirm { UIAlertController *alert = [UIAlertController alertControllerWithTitle:title message:message preferredStyle:UIAlertControllerStyleAlert]; // 下面兩行程式碼 是修改 title顏色和字型的程式碼 // NSAttributedString *attributedMessage = [[NSAttributedString alloc] initWithString:title attributes:@{NSFontAttributeName:[UIFont systemFontOfSize:17.0f], NSForegroundColorAttributeName:UIColorFrom16RGB(0x334455)}]; // [alert setValue:attributedMessage forKey:@"attributedTitle"]; if (cancelTitle) { // 取消 UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:cancelTitle style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) { if (confirm)confirm(cancelIndex); }]; [alert addAction:cancelAction]; } // 確定操作 if (!titleArray || titleArray.count == 0) { UIAlertAction *confirmAction = [UIAlertAction actionWithTitle:@"確定" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) { if (confirm)confirm(0); }]; [alert addAction:confirmAction]; } else { for (NSInteger i = 0; i<titleArray.count; i++) { UIAlertAction *action = [UIAlertAction actionWithTitle:titleArray[i] style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) { if (confirm)confirm(i); }]; // [action setValue:UIColorFrom16RGB(0x00AE08) forKey:@"titleTextColor"]; // 此程式碼 可以修改按鈕顏色 [alert addAction:action]; } } [vc presentViewController:alert animated:YES completion:nil]; } // ActionSheet的封裝 - (void)p_showSheetAlertController:(NSString *)title message:(NSString *)message cancelTitle:(NSString *)cancelTitle titleArray:(NSArray *)titleArray viewController:(UIViewController *)vc confirm:(AlertViewBlock)confirm { UIAlertController *sheet = [UIAlertController alertControllerWithTitle:title message:message preferredStyle:UIAlertControllerStyleActionSheet]; if (!cancelTitle) cancelTitle = @"取消"; // 取消 UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:cancelTitle style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) { if (confirm)confirm(cancelIndex); }]; [sheet addAction:cancelAction]; if (titleArray.count > 0) { for (NSInteger i = 0; i<titleArray.count; i++) { UIAlertAction *action = [UIAlertAction actionWithTitle:titleArray[i] style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) { if (confirm)confirm(i); }]; [sheet addAction:action]; } } [vc presentViewController:sheet animated:YES completion:nil]; } @end
用法：
// 通常的alert [[XSDAlertViewTools shareInstance] showAlert:@"提示" message:@"這個就是提示的內容了" cancelTitle:@"取消" titleArray:@[@"確定"] viewController:nil confirm:^(NSInteger buttonTag) { // cancel按鈕的index（buttonTag）是-1 cancelIndex NSLog(@"點選按鈕的buttonTag===%ld==",(long)buttonTag); }];
// 帶有可變引數的alert
[[XSDAlertViewTools shareInstance] showAlert:@"提示"
message:@"這個就是提示的內容了"
cancelTitle:@"取消"
viewController:self
confirm:^(NSInteger buttonTag) {
// cancel按鈕的index（buttonTag）是-1 cancelIndex
NSLog(@"點選按鈕的buttonTag===%ld==",(long)buttonTag);
} buttonTitles:@"呼叫",@"檢視",@"我就看看", nil];如圖：alert 和sheet
比較low，大家湊合著看吧...其中的sheet的用法，和上面的alert一樣；