1.添加一個(gè)輸入框

UIAlertController *alertController = [UIAlertController alertControllerWithTitle:@"修改稅差(元/噸)" message:@"" preferredStyle:UIAlertControllerStyleAlert];
        //增加取消按鈕
        [alertController addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleDefault handler:nil]];
        //增加確定按鈕
        [alertController addAction:[UIAlertAction actionWithTitle:@"確定" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
            //獲取第1個(gè)輸入框夺欲；
            UITextField *TextField = alertController.textFields.firstObject;
            NSString *moneyStr = [NSString stringWithFormat:@"%.2lf",[TextField.text doubleValue]];
            if ([moneyStr doubleValue] >= [goods.salePrice doubleValue]) {
                kShowInfo(@"稅差不能大于等于含稅價(jià)格");
                return;
            }

            NSMutableDictionary * dict = [NSMutableDictionary dictionary];
            dict[@"goodsId"] = [GlobelConfig getNullStr:goods.ID];
            dict[@"taxPremium"] = moneyStr;
            [self changeTaxPremium:dict];
        }]];

        //定義第一個(gè)輸入框烟零；
        [alertController addTextFieldWithConfigurationHandler:^(UITextField * _Nonnull textField) {
            textField.placeholder = @"請(qǐng)輸入稅差";
            textField.keyboardType = UIKeyboardTypeDecimalPad;
            textField.text = [NSString stringWithFormat:@"%.2lf",[goods.taxPremium doubleValue]];
        }];

        [self presentViewController:alertController animated:true completion:nil];

2.自定義UIAlertController的message

UIAlertController *alertController = [UIAlertController alertControllerWithTitle:alertTitle message:@"" preferredStyle:UIAlertControllerStyleAlert];
    // 增加取消按鈕涝焙；
    [alertController addAction:[UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleDefault handler:nil]];
    // 增加確定按鈕飘庄；
    [alertController addAction:[UIAlertAction actionWithTitle:@"確定" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
        if (self.relatePlanOrderGoodsBlock) {
            self.relatePlanOrderGoodsBlock(selectArray);
            [self.navigationController popViewControllerAnimated:YES];
        }
    }]];
    
    NSMutableAttributedString * totalReportText = [GlobelConfig setTextColor:[NSString stringWithFormat:@"報(bào)款總金額：￥%.2f\n",totalReportAmount] chooseText:[NSString stringWithFormat:@"￥%.2f",totalReportAmount] color:[UIColor redColor] fontSize:16.0];
    NSMutableAttributedString * totalGoodsText = [GlobelConfig setTextColor:[NSString stringWithFormat:@"商品合計(jì)報(bào)款：￥%.2f\n",totalGoodsPaidAmount] chooseText:[NSString stringWithFormat:@"￥%.2f",totalGoodsPaidAmount] color:[UIColor redColor] fontSize:16.0];
    NSMutableAttributedString * totalFreightText = [GlobelConfig setTextColor:[NSString stringWithFormat:@"運(yùn)輸合計(jì)報(bào)款：￥%.2f\n",totalFreightPaidAmount] chooseText:[NSString stringWithFormat:@"￥%.2f",totalFreightPaidAmount] color:[UIColor redColor] fontSize:16.0];
    NSMutableAttributedString * totalInterestText = [GlobelConfig setTextColor:[NSString stringWithFormat:@"利息合計(jì)報(bào)款：￥%.2f\n",totalInterestPaidAmount] chooseText:[NSString stringWithFormat:@"￥%.2f",totalInterestPaidAmount] color:[UIColor redColor] fontSize:16.0];
    NSMutableAttributedString * residueUsableText = [GlobelConfig setTextColor:[NSString stringWithFormat:@"剩余可用金額：￥%.2f\n確定繼續(xù)嗎抒倚？",residueUsablePrice] chooseText:[NSString stringWithFormat:@"￥%.2f",residueUsablePrice] color:[UIColor redColor] fontSize:16.0];
    
    NSMutableAttributedString * endString = [[NSMutableAttributedString alloc]init];
    [endString appendAttributedString:totalReportText];
    [endString appendAttributedString:totalGoodsText];
    [endString appendAttributedString:totalFreightText];
    [endString appendAttributedString:totalInterestText];
    [endString appendAttributedString:residueUsableText];
    
    [alertController setValue:endString forKey:@"attributedMessage"];
   
    [self presentViewController:alertController animated:true completion:nil];

3.自定義UIAlertController的title

 [alert setValue:attibuedString forKey:@"attributedTitle"];

4.修改action字體的顏色(需要runtime與KVC結(jié)合使用)

// 修改字體的顏色
[nan setValue:[UIColor yellowColor] forKey:@"_titleTextColor"];