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  • UIPickView

    // 选择框
        UIPickerView *pickerView = [[UIPickerView alloc] initWithFrame:CGRectMake(0, 100, 320, 216)];
        // 显示选中框
        pickerView.showsSelectionIndicator=YES;
        pickerView.dataSource = self;
        pickerView.delegate = self;
        [self.view addSubview:pickerView];
        [pickerView release];
            _proTimeList = [[NSArray alloc]initWithObjects:@"1",@"2",@"3",@"4",@"5",@"6",@"7",@"8",@"9",@"10",nil];
        _proTitleList = [[NSArray alloc]initWithObjects:@"1",@"2",@"3",@"4",@"5",@"6",@"7",@"8",@"9",@"10",nil
     
     
    // pickerView 列数
    - (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView {
        return 2;
    }
     
    // pickerView 每列个数
    - (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component {
        if (component == 0) {
            return [_proTitleList count];
        }
         
        return [_proTimeList count];
    }
     
    // 每列宽度
    - (CGFloat)pickerView:(UIPickerView *)pickerView widthForComponent:(NSInteger)component {
         
        if (component == 1) {
            return 40;
        }
        return 180;
    }
    // 返回选中的行
    - (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
    {
        if (component == 0) {
            _proNameStr = [_proTitleList objectAtIndex:row];
        } else {
            _proTimeStr = [_proTimeList objectAtIndex:row];
        }
     
    }
     
    //返回当前行的内容,此处是将数组中数值添加到滚动的那个显示栏上
    -(NSString*)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
    {
        if (component == 0) {
            return [_proTitleList objectAtIndex:row];
        } else {
            return [_proTimeList objectAtIndex:row];
     
        }
    }
    1
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  • 原文地址:https://www.cnblogs.com/fantasy3588/p/5036135.html
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