关于UIButton的背景与标题同时显示

setImage方法设置背景

 1         self.btnDateline=[[UIButton alloc]init];
 2         self.btnDateline.tag=tagBtnDateLine;
 3         self.btnDateline.titleLabel.font=[UIFont systemFontOfSize:18];
 4         [self.btnDateline setTitle:@"请选择" forState:UIControlStateNormal];
 5         //[self.btnDateline setBackgroundImage:_imgPicker forState:UIControlStateNormal];
 6         [self.btnDateline setImage:_imgPicker forState:UIControlStateNormal];
 7         //[self.btnDateline setBackgroundColor:[UIColor colorWithPatternImage:_imgPicker]];
 8         self.btnDateline.userInteractionEnabled=YES;
 9         [self.scrollview addSubview:self.btnDateline];
10         [self.btnDateline addTarget:self action:@selector(btnTagged:) forControlEvents:UIControlEventTouchUpInside];

此时图片根据button的尺寸自动进行了缩放,但遮盖了title

setBackgroundColor方法

        
        self.btnDateline=[[UIButton alloc]init];
        self.btnDateline.tag=tagBtnDateLine;
        self.btnDateline.titleLabel.font=[UIFont systemFontOfSize:18];
        [self.btnDateline setTitle:@"请选择" forState:UIControlStateNormal];
        //[self.btnDateline setBackgroundImage:_imgPicker forState:UIControlStateNormal];
        //[self.btnDateline setImage:_imgPicker forState:UIControlStateNormal];
        [self.btnDateline setBackgroundColor:[UIColor colorWithPatternImage:_imgPicker]];
        self.btnDateline.userInteractionEnabled=YES;
        [self.scrollview addSubview:self.btnDateline];
        [self.btnDateline addTarget:self action:@selector(btnTagged:) forControlEvents:UIControlEventTouchUpInside];

此时图片作为背景色,未遮盖了title,但不能根据button的尺寸自动进行了缩放

setBackgroundImage

self.btnDateline=[[UIButton alloc]init];
        self.btnDateline.tag=tagBtnDateLine;
        self.btnDateline.titleLabel.font=[UIFont systemFontOfSize:18];
        [self.btnDateline setTitle:@"请选择" forState:UIControlStateNormal];
        [self.btnDateline setBackgroundImage:_imgPicker forState:UIControlStateNormal];
        //[self.btnDateline setImage:_imgPicker forState:UIControlStateNormal];
        //[self.btnDateline setBackgroundColor:[UIColor colorWithPatternImage:_imgPicker]];
        self.btnDateline.userInteractionEnabled=YES;
        [self.scrollview addSubview:self.btnDateline];
        [self.btnDateline addTarget:self action:@selector(btnTagged:) forControlEvents:UIControlEventTouchUpInside];

此时图片未遮盖了title,且也能根据button的尺寸自动进行了缩放