UIBUTTON 拉伸方法

        _registerBt = [[UIButtonalloc]initWithFrame:CGRectMake(120,InterfaceHeight-35-20,80,35)];

       UIImage * image = [UIImageimageNamed:@"aaa.png"];

       image = [image resizableImageWithCapInsets:UIEdgeInsetsMake(0,16,0,16)];

        [_registerBtsetBackgroundImage:image forState:UIControlStateNormal];

        [_registerBtsetTitle:@"注册"forState:UIControlStateNormal];

        [_registerBt.titleLabelsetFont:[UIFontsystemFontOfSize:14]];

        [_registerBtsetTitleColor:[UIColorblackColor]forState:UIControlStateNormal];

        [_registerBtaddTarget:selfaction:@selector(goToRegister:)forControlEvents:UIControlEventTouchUpInside];

        [self.viewaddSubview:_registerBt];

        [_registerBtrelease];