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-(void)setButtonContentCenter:(UIButton *) btn{
CGSize imgViewSize,titleSize,btnSize;
UIEdgeInsets imageViewEdge,titleEdge;
CGFloat heightSpace = 5.0f;
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imgViewSize = btn.imageView.bounds.size;
titleSize = btn.titleLabel.bounds.size;
btnSize = btn.bounds.size;
imageViewEdge = UIEdgeInsetsMake(heightSpace,0.0, btnSize.height -imgViewSize.height - heightSpace, - titleSize.width);
[btn setImageEdgeInsets:imageViewEdge];
titleEdge = UIEdgeInsetsMake(imgViewSize.height +heightSpace, - imgViewSize.width, 0.0, 0.0);
[btn setTitleEdgeInsets:titleEdge];
}