UIPickerView

约定不等于承诺〃 2023-10-18 13:28 83阅读 0赞

//返回每个组件上的行数
    -(NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
    {
        if(component==0)
        {
            return 2;
        }
        else  if(component==1)
        {
            if(com1==0)
            {
                return 4;
            }
            else if(com1==1)
            {
                return 3;
            }
        }
        else  if(component==2)
        {
            if(com1==0)
            {
                switch (com2) {
                    case 0:
                        return 3;
                        break;
                    case 1:
                        return 1;
                    case 2:
                        return 1;
                    case 3:
                        return 1;
                    default:
                        break;
                }
            }else if(com1==1)
            {
                switch (com2) {
                    case 0:
                        return 3;
                        break;
                    case 1:
                        return 3;
                    case 2:
                        return 2;
                    
                    default:
                        break;
                }
            }
        }
    }
    //返回组件数
    -(NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
    {
        return 3;
    }
    //每一列中每一行的具体内容
    - (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component
    {
        if (component==0)
        {
            switch (row) {
                case 0:
                    return @"VIP专供";
                case 1:
                    return @"VIP牧宝经典";
                    
                default:
                    break;
            }
        }
        else if(component==1)
        {
            if(com1==0)
            {
                switch (row) {
                    case 0:
                        return @"手编垫";
                    case 1:
                        return @"养生垫";
                    case 2:
                        return @"四季垫";
                    case 3:
                        return @"亚麻座垫";
                    default:
                        break;
                }
            }
            else if(com1==1)
            {
                switch (row) {
                    case 0:
                        return @"手编垫";
                    case 1:
                        return @"养生垫";
                    case 2:
                        return @"四季垫";
                    
                    default:
                        break;
                }
            }
        }
        else if(component==2)
        {
            if(com1==0)
            {
                if(com2==0)
                {
                    switch (row) {
                        case 0:
                            return @"MY1301";
                        case 1:
                            return @"MY1302";
                        case 2:
                            return @"MY1303";
                        default:
                            break;
                    }
                }
                return @" ";
            }
            if(com1==1)
            {
                if(com2==0)
                {
                    switch (row) {
                        case 0:
                            return @"MY1305";
                        case 1:
                            return @"MY1306";
                        case 2:
                            return @"MY1315";
                        default:
                            break;
                    }
                }
                if(com2==1)
                {
                    switch (row) {
                        case 0:
                            return @"MBJ1301";
                        case 1:
                            return @"MBJ1302";
                        case 2:
                            return @"MBJ1303";
                        default:
                            break;
                    }
                }
                if(com2==2)
                {
                    switch (row) {
                        case 0:
                            return @"MSJ1301";
                        case 1:
                            return @"MSJ1302";
                        
                        default:
                            break;
                    }
                }
                
            }
    
        }
    }
    //返回组件的高度，如果这个方法未实现，选取器会自动调整到合适的高度
    -(CGFloat)pickerView:(UIPickerView *)pickerView rowHeightForComponent:(NSInteger)component
    {
        return 40;
    }
    //-(CGFloat)pickerView:(UIPickerView *)pickerView widthForComponent:(NSInteger)component
    //{
    //    if(component==0)
    //    {
    //        return 160;
    //    }
    //    return (m_picker.frame.size.width-160)/2;
    //    
    //}
    //选中哪一列哪一行
    -(void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
    {
        if(component==0)
        {
            com1 = row;
        }
        else if(component==1)
        {
            com2=row;
        }
        [m_picker reloadAllComponents];
    }