修正因参数设置先后顺序导致最小日期和最大日期与默认日期之间的误差

Author: Gdxy

TLDatePicker/NSDate+TLCalendarExtention.h

@@ -19,6 +19,10 @@
  * 比较from和self的时间差值,返回秒 self - from
  */
 - (NSTimeInterval)compareFrom:(NSDate *)from;
+/**
+ * 比较两个日期是否相等，unit: 精确度(Year ~ Second)
+ */
+- (BOOL)isEqualDate:(NSDate *)date miniUnit:(NSCalendarUnit)unit;
 
 // MARK: - 判断
 /**

TLDatePicker/NSDate+TLCalendarExtention.m

@@ -27,6 +27,26 @@ - (NSTimeInterval)compareFrom:(NSDate *)from {
     return time;
 }
 
+/// 比较两个日期是否相等，unit: 精确度(Year ~ Second)
+- (BOOL)isEqualDate:(NSDate *)date miniUnit:(NSCalendarUnit)unit {
+    BOOL flag = self.year == date.year;
+    if (unit == NSCalendarUnitYear) return flag;
+    
+    flag = flag && self.month == date.month;
+    if (unit == NSCalendarUnitMonth) return flag;
+    
+    flag = flag && self.day == date.day;
+    if (unit == NSCalendarUnitDay) return flag;
+    
+    flag = flag && self.hour == date.hour;
+    if (unit == NSCalendarUnitHour) return flag;
+    
+    flag = flag && self.minute == date.minute;
+    if (unit == NSCalendarUnitMinute) return flag;
+       
+    return flag && self.second == date.second;;
+}
+
 // MARK: - 判断
 
 - (BOOL)isToday {

TLDatePicker/TLDatePickerView.m

@@ -97,7 +97,24 @@ - (void)setMode:(TLDatePickerMode)mode
 - (void)resetParams
 {
     if (!self.date) {
-        self.date = [NSDate date];
+       self.date = [NSDate date];
+       if (self.maxDate && [self.maxDate compareFrom:self.date] < 0) {
+           NSCalendarUnit unit = [self calendarUnit];
+           if ([self.date isEqualDate:self.maxDate miniUnit:unit]) { // 小误差范围内修正
+               self.maxDate = [NSDate dateWithTimeIntervalSince1970:self.date.timeIntervalSince1970 + 1];
+           }else {
+               NSAssert(NO, @"TLDatePicker: maxDate不能小于默认date");
+           }
+       }
+    }else {
+       if (self.minDate && [self.minDate compareFrom:self.date] > 0) {
+           NSCalendarUnit unit = [self calendarUnit];
+           if ([self.date isEqualDate:self.minDate miniUnit:unit]) { // 小误差范围内修正
+               self.minDate = [NSDate dateWithTimeIntervalSince1970:self.date.timeIntervalSince1970 - 1];
+           }else {
+               NSAssert(NO, @"TLDatePicker: minDate不能大于默认date");
+           }
+       }
     }
 
     [self.data updateComponentWithDate:self.date];
@@ -112,6 +129,26 @@ - (void)resetParams
     }
 }
 
+- (NSCalendarUnit)calendarUnit
+{
+    if (self.mode == TLDatePickerModeYear) {
+        return NSCalendarUnitYear;
+    }
+    
+    if (self.mode == TLDatePickerModeYearAndMonth) {
+        return NSCalendarUnitMonth;
+    }
+    if (self.mode == TLDatePickerModeDate) {
+        return NSCalendarUnitDay;
+    }
+    if (self.mode == TLDatePickerModeTime || self.mode == TLDatePickerModeDateAndTime) {
+        return NSCalendarUnitMinute;
+    }
+
+    return NSCalendarUnitSecond;
+}
+
+
 /// 需要动画的component
 - (void)scrollToSelectedDateWithAnimatedComponent:(TLPickerComponent *)component
 {