iOS小技巧---view动画

    [UIView animateWithDuration:Time animations:^{

        _toolBar.frame = CGRectMake(0, self.theSuperView.frame.size.height-_toolBar.frame.size.height,  self.theSuperView.bounds.size.width,_toolBar.frame.size.height);

    }];

-(void) keyboardDown{

    [bar dismissKeyBoard];  // 缩键盘

    [UIView beginAnimations:@"move" context:nil];

    [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];

    [UIView setAnimationDuration:0.25f];

    CGRect newFrame = CGRectMake(0, 0, self.view.bounds.size.width, _choseTable.frame.size.height);

    _choseTable.frame = newFrame;

    [UIView commitAnimations];

}