How set text field and button at center of view automatically when mode change?

I want to set text field , uibutton, label and image view at the center of UIView automatically when i chang开发者_StackOverflow社区e mode of view either land scape or portrait mode.My mean that when i change orientation then text field and button and image automatically set in center of view. How i set them by using interface builder or dynamically?

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Write code in this method

-(BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation 
{
    return YES;
}


-(void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation
{
    if (fromInterfaceOrientation == UIInterfaceOrientationLandscapeLeft || fromInterfaceOrientation == UIInterfaceOrientationLandscapeRight )
    {
        //write your code specific to orientation
    }
    else if(fromInterfaceOrientation == UIInterfaceOrientationPortrait || fromInterfaceOrientation == UIInterfaceOrientationPortraitUpsideDown)
    {
            //write your code specific to orientation
    }

}

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Programmtically you can set the center property of your views. Do that when you detect interface orientation change.

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you have to constrcut two different frames for that. One for normal view and other for landscape view . Then in the interFaceOrientationChange method u have to set the new frame.

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use button.center = view.center property.

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use autoresizing property on UIView and set it accordingly ... most convenient way of doing it