IOS - 获取UITextField的输入文本

当UITextField文本改变时, 依据内容更新数据, 通过写监听事件就可以.

加入监听:

[timesField addTarget:self

               action:@selector(textFieldDidChange:)

     forControlEvents:UIControlEventEditingChanged]; // 监听事件

监听事件:

// 监听改变button

- (void) textFieldDidChange:(UITextField*) sender {

    // 文本内容

    NSInteger times = [sender.text integerValue];

    [_serviceNumList replaceObjectAtIndex:_servicePos withObject:[NSNumber numberWithInteger:times]];

    // 总价

    _totalPrice = (float)([_goodsList[_servicePos][@"Price"] floatValue]/100.0)*[[_serviceNumList objectAtIndex:_servicePos] integerValue];

    [_totalPriceLabel setText:[NSString stringWithFormat:@"%0.1f", _totalPrice]];

}

其余UITextField属性:

        // 输入框

        UITextField *timesField = [[UITextField alloc] initWithFrame:CGRectMake(200*kViewRatio, 10*kViewRatio, 32*kViewRatio, 20*kViewRatio)]; // 位置大小

        [timesField setBorderStyle:UITextBorderStyleRoundedRect]; //外框类型

        NSAttributedString* timesText =[[NSAttributedString alloc] initWithString:[NSString stringWithFormat:@"%ld", (long)[[_serviceNumList objectAtIndex:row] integerValue]]]; // 设置文字

        [timesField setAttributedText:timesText];

        [timesField setFont:[UIFont systemFontOfSize: 12*kViewRatio]]; // 文字大小

        [timesField setTextAlignment:NSTextAlignmentCenter]; // 文字位置

        [timesField setDelegate:self]; // 限制长度

        [timesField addTarget:self

                       action:@selector(textFieldDidChange:)

             forControlEvents:UIControlEventEditingChanged]; // 监听事件

        [itemView addSubview:timesField]; // 加入父视图

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