IOS - 擷取UITextField的輸入文本

IOS - 擷取UITextField的輸入文本

當UITextField文本改變時, 根據內容更新資料, 通過寫監聽事件即可.
添加監聽:

[timesField addTarget:self               action:@selector(textFieldDidChange:)     forControlEvents:UIControlEventEditingChanged]; // 監聽事件

監聽事件:

// 監聽改變按鈕- (void) textFieldDidChange:(UITextField*) sender {    // 常值內容    NSInteger times = [sender.text integerValue];    [_serviceNumList replaceObjectAtIndex:_servicePos withObject:[NSNumber numberWithInteger:times]];    // 總價    _totalPrice = (float)([_goodsList[_servicePos][@Price] floatValue]/100.0)*[[_serviceNumList objectAtIndex:_servicePos] integerValue];    [_totalPriceLabel setText:[NSString stringWithFormat:@%0.1f, _totalPrice]];}

其餘UITextField屬性:

        // 輸入框        UITextField *timesField = [[UITextField alloc] initWithFrame:CGRectMake(200*kViewRatio, 10*kViewRatio, 32*kViewRatio, 20*kViewRatio)]; // 位置大小        [timesField setBorderStyle:UITextBorderStyleRoundedRect]; //外框類型        NSAttributedString* timesText =[[NSAttributedString alloc] initWithString:[NSString stringWithFormat:@%ld, (long)[[_serviceNumList objectAtIndex:row] integerValue]]]; // 設定文字        [timesField setAttributedText:timesText];        [timesField setFont:[UIFont systemFontOfSize: 12*kViewRatio]]; // 文字大小        [timesField setTextAlignment:NSTextAlignmentCenter]; // 文字位置        [timesField setDelegate:self]; // 限制長度        [timesField addTarget:self                       action:@selector(textFieldDidChange:)             forControlEvents:UIControlEventEditingChanged]; // 監聽事件        [itemView addSubview:timesField]; // 添加父視圖