iOS Button 上文字图片位置的设置

1. 添加图片+文字／文字+图片，不分前后，图片默认在文字前边加空格隔开

 UIButton * button =[[UIButton alloc] initWithFrame:CGRectMake(30, 200, 300, 50)];
    button.backgroundColor =[UIColor grayColor];
    //图片
    [button setImage:[UIImage imageNamed:@"but"] forState:UIControlStateNormal];
    
    //文字
    [button setTitle:@"  But文字" forState:UIControlStateNormal];
    [button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    button.titleLabel.font =[UIFont boldSystemFontOfSize:40];
    
    [self.view addSubview:button];

2.设置文字图片显示整体位置：居中、左、右；单独设置文字的位置

top : 为正数的时候,是往下偏移,为负数的时候往上偏移;

left : 为正数的时候往右偏移,为负数的时候往左偏移;

bottom : 为正数的时候往上偏移,为负数的时候往下偏移;

right :为正数的时候往左偏移,为负数的时候往右偏移;

 UIButton * button =[[UIButton alloc] initWithFrame:CGRectMake(30, 200, 300, 50)];
    button.backgroundColor =[UIColor grayColor];
    //文字
    [button setTitle:@"But文字" forState:UIControlStateNormal];
    [button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    button.titleLabel.font =[UIFont boldSystemFontOfSize:40];
    //图片
    [button setImage:[UIImage imageNamed:@"but"] forState:UIControlStateNormal];
    
    /////////////修改///////////////////
    button.contentHorizontalAlignment = UIControlContentHorizontalAlignmentCenter;//使图片和文字水平居中显示
    /*
     UIControlContentHorizontalAlignmentCente
     UIControlContentHorizontalAlignmentLeft
     UIControlContentHorizontalAlignmentRight
     UIControlContentHorizontalAlignmentFill */
    //文字 可以显示在 button 视图之外，但不接收点击事件响应
    [button setTitleEdgeInsets:UIEdgeInsetsMake(button.imageView.frame.size.height ,button.imageView.frame.size.width, 0.0,0.0)];//文字距离上边框的距离增加imageView的高度，距离左边框减少imageView的宽度，距离下边框和右边框距离不变
    ///////////////////////////////////////
    
    
       [self.view addSubview:button];

3.效果：

UIButton * button =[[UIButton alloc] initWithFrame:CGRectMake(30, 200, 300, 50)];
    button.backgroundColor =[UIColor grayColor];
    //文字
    [button setTitle:@"But文字" forState:UIControlStateNormal];
    [button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    button.titleLabel.font =[UIFont boldSystemFontOfSize:40];
    //图片
    [button setImage:[UIImage imageNamed:@"xia"] forState:UIControlStateNormal];
    
    /////////////修改///////////////////
    button.contentHorizontalAlignment = UIControlContentHorizontalAlignmentLeft;
    button.imageEdgeInsets = UIEdgeInsetsMake(0,300-50, 0, 0); //上左下右

//button.titleEdgeInsets = UIEdgeInsetsMake(0,300-50, 0, 0); // 设置文字的位置 上左下右

///////////////////////////////////////  [self.view addSubview:button];

4/ 但是图片尺寸大了位置会错乱，如有遇到的请评论指点