UIPickerview 基本使用

// 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];

 

    }

}