Button

1.取消点击时高亮状态

- (void)setHighlighted:(BOOL)highlighted {    

// 自定义Button重写该方法可以取消高亮

}

2. button上文字 图片 位置

UIButton *btn = [UIButton buttonWithType:UIButtonTypeCustom];

    btn.frame=CGRectMake(40,300,200,80);

    //[btn setBackgroundImage:[UIImage imageNamed:@"background.jpg"] forState:UIControlStateNormal];

    [btnsetBackgroundImage:[UIImage imageNamed:@"Button-Normal"] forState:UIControlStateNormal];

    [btnsetImage:[UIImage imageNamed:@"home_on"] forState:UIControlStateNormal];

    [btnsetTitle:@"Home" forState:UIControlStateNormal];

    //按钮的内容在水平方向的对齐方式

    btn.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;

    //按钮的内容在垂直方向的对齐方式

    btn.contentVerticalAlignment = UIControlContentVerticalAlignmentTop;

    CGFloatbtnWidth =CGRectGetWidth(btn.frame);

    CGFloatimageWidth =CGRectGetWidth(btn.imageView.frame);

    CGFloatlableWidth =CGRectGetWidth(btn.titleLabel.frame);

    CGFloatbtnHeight =CGRectGetHeight(btn.frame);

    CGFloatimageHeight =CGRectGetHeight(btn.imageView.frame);

    CGFloatlabelHeight =CGRectGetHeight(btn.titleLabel.frame);

    //如果按钮上既有图像又有文字，设置边距时，图像的上、下、左边距相对于按钮，右边距相对于文字；文字的上、下、右边距相对于按钮，左边距相对于图像

    btn.titleLabel.backgroundColor = [UIColor yellowColor];

    btn.imageView.backgroundColor = [UIColor redColor];

    //设置图像的边距

    btn.imageEdgeInsets=UIEdgeInsetsMake((btnHeight - imageHeight - labelHeight) /2, (btnWidth - imageWidth) /2,0,0);

    NSLog(@"btn.imageEdgeInsets:%@", NSStringFromUIEdgeInsets(btn.imageEdgeInsets));

    NSLog(@"btn.frame:%@", NSStringFromCGRect(btn.frame));

    //设置文字的边距

    btn.titleEdgeInsets=UIEdgeInsetsMake((btnHeight - imageHeight - labelHeight) /2+ imageHeight, (btnWidth - lableWidth) /2- imageWidth,0,0);

    [self.viewaddSubview:btn];