（3） 创建继承于WXZBasePickView的时间选择器WXZPickTimeView。
.h声明属性及相关方法
#import "WXZBasePickView.h"
@class WXZPickTimeView;
@protocol PickTimeViewDelegate<NSObject>
- (void)pickerTimeView:(WXZPickTimeView *)pickerTimeView selectHour:(NSInteger)hour selectMinute:(NSInteger)minute ;
@end
@interface WXZPickTimeView : WXZBasePickView
@property(nonatomic, weak)id <PickTimeViewDelegate>delegate ;
-(void)setDefaultHour:(NSInteger)hour defaultMinute:(NSInteger)minute ;
@end
.m实现相关方法
#import "WXZPickTimeView.h"
@interface WXZPickTimeView () <UIPickerViewDataSource, UIPickerViewDelegate>{
UIDatePicker *_datePicker;
}
@property (nonatomic, assign)NSInteger selectHour;
@property (nonatomic, assign)NSInteger selectMinute;
@property (nonatomic, assign)NSInteger day;
@property (nonatomic, assign)NSInteger defaultHour;
@property (nonatomic, assign)NSInteger defaultMinute;
@end
@implementation WXZPickTimeView
- (void)initPickView
{
[super initPickView];
NSCalendar *gregorian = [[NSCalendar alloc]
initWithCalendarIdentifier:NSCalendarIdentifierGregorian];
// 获取当前日期
NSDate* dt = [NSDate date];
// 定义一个时间字段的旗标，指定将会获取指定年、月、日、时、分、秒的信息
unsigned unitFlags = NSCalendarUnitYear |
NSCalendarUnitMonth | NSCalendarUnitDay |
NSCalendarUnitHour | NSCalendarUnitMinute |
NSCalendarUnitSecond | NSCalendarUnitWeekday;
// 获取不同时间字段的信息
NSDateComponents* comp = [gregorian components: unitFlags
fromDate:dt];
_selectHour=comp.hour;
_selectMinute=comp.minute;
[self.pickerView setDelegate:self];
[self.pickerView setDataSource:self];
[self.pickerView selectRow:_selectHour inComponent:0 animated:NO];
[self.pickerView selectRow:_selectMinute inComponent:1 animated:NO];
}
-(void)setDefaultHour:(NSInteger)hour defaultMinute:(NSInteger)minute{
if (hour!=0) {
_defaultHour=hour;
}else{
_defaultHour=_selectHour;
}
if (minute!=0) {
_defaultMinute = minute;
}else{
_defaultMinute=_selectMinute;
}
[self.pickerView selectRow:_defaultHour inComponent:0 animated:NO];
[self.pickerView reloadComponent:1];
[self.pickerView selectRow:_defaultMinute inComponent:1 animated:NO];
[self refreshPickTimeViewData];
}
- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView
{
return 2;
}
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component
{
if (component == 0) {
return 24;
}else {
return 60;
}
}
- (CGFloat)pickerView:(UIPickerView *)pickerView rowHeightForComponent:(NSInteger)component
{
return 36;
}
- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component
{
switch (component) {
case 0:
[pickerView reloadComponent:1];
break;
case 1:
default:
break;
}
[self refreshPickTimeViewData];
}
- (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(nullable UIView *)view
{
NSString *text;
if (component == 0) {
if (row<10) {
text = [NSString stringWithFormat:@"0%zd时", row];
}else{
text = [NSString stringWithFormat:@"%zd时", row];
}
}else if (component == 1){
if (row<10) {
text = [NSString stringWithFormat:@"0%zd分", row ];
}else{
text = [NSString stringWithFormat:@"%zd分", row ];
}
}else{
}
UILabel *label = [[UILabel alloc]init];
label.textAlignment = 1;
label.font = [UIFont systemFontOfSize:16];
label.text = text;
return label;
}
- (void)clickConfirmButton
{
if ([self.delegate respondsToSelector:@selector(pickerTimeView:selectHour:selectMinute:)]) {
[self.delegate pickerTimeView:self selectHour:self.selectHour selectMinute:self.selectMinute];
}
[super clickConfirmButton];
}
- (void)refreshPickTimeViewData
{
self.selectHour = [self.pickerView selectedRowInComponent:0];
self.selectMinute = [self.pickerView selectedRowInComponent:1];
}
@end
