[IOS]UIPickerView选择时间段

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[IOS]UIPickerView选择时间段
Demo:http://download.csdn.net/detail/u012881779/8666805
功能：UIPickerView默认的横线显示隐藏
保持“结束时间”一直大于“开始时间”
#import "SWYearTimeChoose.h"@interface SWYearTimeChoose () <UIPickerViewDelegate , UIPickerViewDataSource>@property (strong, nonatomic) IBOutlet UIPickerView *pickerView;    //选择器@property (strong, nonatomic) NSMutableArray        *yearOneArr;    //年份列表_起@property (strong, nonatomic) NSMutableArray        *montOnehArr;   //月份列表_起@property (strong, nonatomic) NSMutableArray        *yearTwoArr;    //年份列表_止@property (strong, nonatomic) NSMutableArray        *montTwohArr;   //月份列表_止@property (strong, nonatomic) NSMutableArray        *valuewYTwoArr;@property (strong, nonatomic) NSMutableArray        *valuewMTwoArr;@property (strong, nonatomic) NSString              *yearOneStr;    //年份_起@property (strong, nonatomic) NSString              *montOneStr;    //月份_起@property (strong, nonatomic) NSString              *yearTwoStr;    //年份_止@property (strong, nonatomic) NSString              *montTwoStr;    //月份_止@end@implementation SWYearTimeChoose//当前时间的时间戳-(long int)cNowTimestamp{    NSDate *newDate = [NSDate date];    long int timeSp = (long)[newDate timeIntervalSince1970];    return timeSp;}//时间戳——字符串时间-(NSString *)cStringFromTimestamp:(NSString *)timestamp{    NSDate *timeData = [NSDate dateWithTimeIntervalSince1970:[timestamp intValue]];    NSDateFormatter *dateFormatter =[[NSDateFormatter alloc] init];    [dateFormatter setDateFormat:@"yyyy"];    NSString *strTime = [dateFormatter stringFromDate:timeData];    return strTime;}//当前月份-(NSString *)cMontFromTimestamp:(NSString *)timestamp{    NSDate *timeData = [NSDate dateWithTimeIntervalSince1970:[timestamp intValue]];    NSDateFormatter *dateFormatter =[[NSDateFormatter alloc] init];    [dateFormatter setDateFormat:@"MM"];    NSString *strTime = [dateFormatter stringFromDate:timeData];    return strTime;}//年份范围-(NSMutableArray *)yearArrayAction{    NSString *yearStr = [self cStringFromTimestamp:[NSString stringWithFormat:@"%ld",[self cNowTimestamp]]];    NSInteger endYearInt = [yearStr integerValue];    NSMutableArray *tempArry = [[NSMutableArray alloc] init];    for (int i = 1979; i <= endYearInt ; i ++) {        [tempArry addObject:[NSString stringWithFormat:@"%d",i]];    }    return tempArry;}- (void)drawRect:(CGRect)rect {    // Drawing code    if(!_yearOneArr){        _yearOneArr = [self yearArrayAction];    }        if(!_montOnehArr){        _montOnehArr = [[NSMutableArray alloc] initWithObjects:@"01",@"02",@"03",@"04",@"05",@"06",@"07",@"08",@"09",@"10",@"11",@"12",nil];    }        if(!_valuewYTwoArr){        _valuewYTwoArr = [self yearArrayAction];    }        if(!_valuewMTwoArr){        _valuewMTwoArr = [[NSMutableArray alloc] initWithObjects:@"01",@"02",@"03",@"04",@"05",@"06",@"07",@"08",@"09",@"10",@"11",@"12",nil];    }    _pickerView.delegate = self;    _pickerView.dataSource = self;        [self valueChangeYear:[_valuewYTwoArr lastObject] andMonth:[_valuewMTwoArr firstObject]];    //初始默认选择    for(NSInteger i = 0;i < 4;i ++){        NSInteger row = 0;        if(i == 0){            row = [_yearOneArr count]-1;            _yearOneStr = [_yearOneArr objectAtIndex:row];        }else if(i == 1){            row = 0;            _montOneStr = [_montOnehArr objectAtIndex:row];        }else if(i == 2){            row = [_yearTwoArr count]-1;            _yearTwoStr = [_yearTwoArr objectAtIndex:row];        }else if(i == 3){            NSString *monStr = [self cMontFromTimestamp:[NSString stringWithFormat:@"%ld",[self cNowTimestamp]]];            NSInteger theRow = [_montTwohArr indexOfObject:monStr];            row = theRow;            _montTwoStr = [_montTwohArr objectAtIndex:row];        }        [_pickerView selectRow:row inComponent:i animated:NO];    }    }-(void)valueChangeYear:(NSString *)theYear andMonth:(NSString *)theMonth{    NSInteger yInt = [_valuewYTwoArr indexOfObject:theYear];    NSInteger mInt = [_valuewMTwoArr indexOfObject:theMonth];        if(!_yearTwoArr){        _yearTwoArr = [[NSMutableArray alloc] init];    }    [_yearTwoArr removeAllObjects];    for (NSInteger i = yInt; i < _valuewYTwoArr.count ; i ++) {        [_yearTwoArr addObject:[_valuewYTwoArr objectAtIndex:i]];    }        if(!_montTwohArr){        _montTwohArr = [[NSMutableArray alloc] init];    }    [_montTwohArr removeAllObjects];    for (NSInteger j = mInt; j < _valuewMTwoArr.count ; j ++) {        [_montTwohArr addObject:[_valuewMTwoArr objectAtIndex:j]];    }        [_pickerView reloadAllComponents];}//返回- (IBAction)returnAction:(id)sender {    [self removeFromSuperview];}//查询- (IBAction)queryAction:(id)sender{    //缓存选择时间    NSString *userDefau = [NSString stringWithFormat:@"%@;%@;%@;%@",_yearOneStr,_montOneStr,_yearTwoStr,_montTwoStr];    NSUserDefaults *isLoginDefaults = [NSUserDefaults standardUserDefaults];    [isLoginDefaults setObject:userDefau forKey:@"timeChooseOne"];    [isLoginDefaults synchronize];        //返回    [self returnAction:nil];}#pragma mark UIPickerViewDataSource//几列- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView{    return 4;}//几行- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component{    if(component == 0)        return [_yearOneArr count];    else if(component == 1)        return [_montOnehArr count];    else if(component == 2)        return [_yearTwoArr count];    else if(component == 3)        return [_montTwohArr count];        return -1;}#pragma mark UIPickerViewDelegate//component宽度- (CGFloat)pickerView:(UIPickerView *)pickerView widthForComponent:(NSInteger)component{    if(component == 0)        return 75.0f;    else if(component == 1)        return 65.0f;    else if(component == 2)        return 75.0f;    else if(component == 3)        return 55.0f;        return 0.0f;}//row高度- (CGFloat)pickerView:(UIPickerView *)pickerView rowHeightForComponent:(NSInteger)component{    return 50.0f;}//专门为定制UIPickerView用的一个函数，返回component列row行所在的定制的View，不自定义的话会有一个系统默认的格式- (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view{        //得到Component对应的宽和高    CGFloat width = [self pickerView:pickerView widthForComponent:component];    CGFloat height = [self pickerView:pickerView rowHeightForComponent:component];        //返回UIView    UIView *returnView = [[UIView alloc] init];    [returnView setFrame:CGRectMake(0, 0, width, height-10)];        //添加UILabel到UIView上,传递数据    UIColor *color = [UIColor colorWithRed:25/255.0 green:135/255.0 blue:246/255.0 alpha:1];    UILabel *label = [[UILabel alloc] init];    label.frame = returnView.frame;    [label setFont:[UIFont systemFontOfSize:20]];    [label setTextColor:color];    label.tag = 1000;    [returnView addSubview:label];        //对Label附加数据    if(component == 0){        label.text = [_yearOneArr  objectAtIndex:row];        [label setTextAlignment:NSTextAlignmentLeft];    }else if(component == 1){        label.text = [_montOnehArr objectAtIndex:row];        [label setTextAlignment:NSTextAlignmentLeft];    }else if(component == 2){        label.text = [_yearTwoArr  objectAtIndex:row];        [label setTextAlignment:NSTextAlignmentCenter];    }else if(component == 3){        label.text = [_montTwohArr objectAtIndex:row];        [label setTextAlignment:NSTextAlignmentCenter];    }    //隐藏选择器横线    NSArray *picArr = pickerView.subviews;    for(int i = 0; i < picArr.count ; i ++){        UIView *tempView = (UIView *)[picArr objectAtIndex:i];        [tempView setBackgroundColor:[UIColor clearColor]];    }        return returnView;}//关联UILabel 和 UIPickerView- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component{        //取得选择的Row    NSInteger rowZero,rowOne,rowTwo,rowThree;    rowZero  = [pickerView selectedRowInComponent:0];    rowOne   = [pickerView selectedRowInComponent:1];    rowTwo   = [pickerView selectedRowInComponent:2];    rowThree = [pickerView selectedRowInComponent:3];        //从选择的Row取得View    UIView *viewZero,*viewOne,*viewTwo,*viewThree;    viewZero  = [pickerView viewForRow:rowZero   forComponent:0];    viewOne   = [pickerView viewForRow:rowOne    forComponent:1];    viewTwo   = [pickerView viewForRow:rowTwo    forComponent:2];    viewThree = [pickerView viewForRow:rowThree  forComponent:3];        //从取得的View取得上面UILabel    UILabel *labZero,*labOne,*labTwo,*labThree;    labZero  = (UILabel *)[viewZero   viewWithTag:1000];    labOne   = (UILabel *)[viewOne    viewWithTag:1000];    labTwo   = (UILabel *)[viewTwo    viewWithTag:1000];    labThree = (UILabel *)[viewThree  viewWithTag:1000];        //将从三列分别取得的，字体，大小，颜色，传递给在界面上显示的UILabel    _yearOneStr = labZero.text;    _montOneStr = labOne.text;    _yearTwoStr = labTwo.text;    _montTwoStr = labThree.text;        if([_yearOneStr isEqualToString:_yearTwoStr]){        [self valueChangeYear:_yearOneStr andMonth:_montOneStr];    }else{        [self valueChangeYear:_yearOneStr andMonth:@"01"];    }       for(NSInteger i = 0;i < 4;i ++){        NSInteger index = 0;        if (row == i) {            break;        }        if(i == 0){            index = [_yearOneArr indexOfObject:_yearOneStr];            _yearOneStr = [_yearOneArr objectAtIndex:index];                    }else if(i == 1){            index = [_montOnehArr indexOfObject:_montOneStr];            _montOneStr = [_montOnehArr objectAtIndex:index];                    }else if(i == 2){            if([_yearOneStr integerValue] > [_yearTwoStr integerValue]){                index = [_yearTwoArr indexOfObject:_yearOneStr];            }else{                index = [_yearTwoArr indexOfObject:_yearTwoStr];            }            _yearTwoStr = [_yearTwoArr objectAtIndex:index];                    }else if(i == 3){            if([_yearOneStr isEqualToString:_yearTwoStr] && [_montOneStr integerValue]>[_montTwoStr integerValue]){                index = [_montTwohArr indexOfObject:_montOneStr];            }else{                index = [_montTwohArr indexOfObject:_montTwoStr];            }            _montTwoStr = [_montTwohArr objectAtIndex:index];                    }        [_pickerView selectRow:index inComponent:i animated:NO];    }    }@end
默认pickerView样式：
隐藏pickerView横线：
更换pickerView横线：
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