Custom iOS UIDatepicker using UIAppearance

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The API does not provide a way to do this.
You can make a pretty convincing replica yourself using a UIPickerView rather than using UIDatePicker.

As the UIDatePicker or UIPickerView don’t have the UI_APPEARANCE_SELECTOR and even you can’t change UIDatePicker contents’ appearance as its UIControl and not having any delegate so it has its native appearance whereas in case of UIPickerView you can change its contents’ appearance similar as in UITableView.

#pragma mark -
#pragma mark UIPicker Delegate & DataSource

- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView {
    return 2;
}

// returns the # of rows in each component..
- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component {
    return 100;
}
//- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:  (NSInteger)component {
     //    return [NSString stringWithFormat:@"%d",row];
//}
- (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view {

      UILabel *label= [[[UILabel alloc] initWithFrame:CGRectMake(30.0, 0.0, 50.0, 50.0)] autorelease];
      [label setBackgroundColor:[UIColor clearColor]];
      [label setTextColor:[UIColor blueColor]];
      [label setFont:[UIFont boldSystemFontOfSize:40.0]];
      [label setText:[NSString stringWithFormat:@"%d",row]];

      return label;
}

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Check this out.

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