How to set the background color of UIPickerView on iOS 7 using SDK 7?

问题

How to set the background color of UIPickerView on iOS 7 using SDK 7 and use a standard picker on iOS 5 and 6? It's transparent by default on iOS 7.

回答1:

What's wrong with:

[picker setBackgroundColor:[UIColor whiteColor]];

I'm assuming you have a reference to the picker view if you're invoking it, and it's a subclass of UIView so backgroundColor is a valid property...

回答2:

I wanted to write it as a comment, but it would be hard to read :) Sooo....

-(UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view
{
    UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 50, 44)]; // your frame, so picker gets "colored"
    label.backgroundColor = [UIColor lightGrayColor];
    label.textColor = [UIColor blackColor];
    label.font = [UIFont fontWithName:@"HelveticaNeue-Bold" size:18];
    label.text = [NSString stringWithFormat:@"%d",row];

    return label;
}

Also it doesnt have to be only label, I think you can insert other subviews there as well... It works on iOS7 as far as I know

回答3:

This worked for me, in iOS 7.1:

[[UIPickerView appearance] setBackgroundColor:[UIColor whiteColor];

This changes the color of all pickers. You can put a conditional around it if you only want this to run on devices with iOS 7.

回答4:

I have added UIView under UIPickerView with code:

CGRect framePickerView = CGRectMake(0, self.view.frame.size.height, self.view.frame.size.width, 216);
pickerView = [[[UIView alloc] initWithFrame:framePickerView] autorelease];
pickerView.backgroundColor = [UIColor whiteColor];
[self.view addSubview:pickerView];
[pickerView addSubview:picker];

instead the code:

[self.view addSubview:picker];

回答5:

Even though I set UIPickerView.backgorundColor, but I had weird background color.

removing following line fixed the issue:

UITextField.keyboardAppearance = .dark

Or just reset keyboardAppearance back to default, like so:

UITextField.keyboardAppearance = .default

回答6:

For anyone working in swift, and potentially using multiple pickers:

pickerView1.backgroundColor = UIColor.darkGrayColor()
pickerView2.backgroundColor = UIColor.greenColor()

Xcode 7.3

来源：https://stackoverflow.com/questions/19121799/how-to-set-the-background-color-of-uipickerview-on-ios-7-using-sdk-7

标签

iphone

ios

ios7

uipickerview