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

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