iOS: 首次使用App时,显示半透明新手指引

在很多的app,我们都会发现这样一个功能:就是app启动后进入主界面时,会有一个半透明的指引图,它会提示用户如何一步步进行操作,快速的熟悉app的使用规则,极大地方便了用户的使用,也加快了app的推广,优点不言而喻。

我主要介绍一下思路:

  首先创建一个半透明的蒙版覆盖在当前整个屏幕上,然后用贝塞尔曲线绘制白色的提示框(矩形或者圆形),接着给出带箭头图标的文字提示,也即在蒙版上添加自定义的子视图控件。当然,最后给整个蒙版添加一个触摸手势,只要轻轻点击就移除蒙版、子视图、手势,恢复正常界面。

注意:新手引导只需要出现一次就够了,可以通过偏好设置来控制器只出现一次。

演示截图如下:

出现指引                    点击指引消失,按照提示操作

   

代码如下:

颜色宏定义

// 颜色RGB
#define XYQColorRGB(r, g, b)   [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:1.0]
#define XYQColorRGBA(r, g, b, a) [UIColor colorWithRed:(r)/255.0 green:(g)/255.0 blue:(b)/255.0 alpha:a]

新手指引

#pragma mark - 新手引导
- (void)newUserGuide
{
    // 这里创建指引在这个视图在window上(蒙版、手势)
    CGRect frame = [UIScreen mainScreen].bounds;
    UIView * bgView = [[UIView alloc]initWithFrame:frame];
    bgView.backgroundColor = XYQColorRGBA(50, 50, 50, 0.8);
    UITapGestureRecognizer * tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(sureTapClick:)];
    [bgView addGestureRecognizer:tap];
    
    //添加子视图控件
    UILabel *textLabel = [[UILabel alloc]initWithFrame:CGRectMake(5, 320, frame.size.width-10, 50)];
    textLabel.backgroundColor = [UIColor clearColor];
    textLabel.text = @"“点击直接聊天,向左侧滑看报告、删除”";
    textLabel.textColor = [UIColor whiteColor];
    textLabel.textAlignment = NSTextAlignmentCenter;
    textLabel.font = fontSize_16;
    [bgView addSubview:textLabel];
    UIImageView * imageView = [[UIImageView alloc]initWithFrame:CGRectMake(frame.size.width/2-30,115,100, 200)];;
    imageView.image = [UIImage imageNamed:@"CouponBoard_guid"];
    [bgView addSubview:imageView];
    [[UIApplication sharedApplication].keyWindow addSubview:bgView];
    
    //create path 重点来了(这里需要添加第一个路径)
    UIBezierPath *path = [UIBezierPath bezierPathWithRect:frame];
    // 这里添加第二个路径  (这个是矩形)
    [path appendPath:[[UIBezierPath bezierPathWithRoundedRect:CGRectMake(5, 64, frame.size.width-10, 50) cornerRadius:8] bezierPathByReversingPath]];
    
    //渲染
    CAShapeLayer *shapeLayer = [CAShapeLayer layer];
    shapeLayer.path = path.CGPath;
    [bgView.layer setMask:shapeLayer];
    
}
/**
 *   新手指引确定
 */
- (void)sureTapClick:(UITapGestureRecognizer *)tap
{
    UIView *guidevView = tap.view;
    [guidevView removeFromSuperview]; //移除蒙版
    [guidevView.subviews makeObjectsPerformSelector:@selector(removeFromSuperview)];//移除所有子视图
    [guidevView removeGestureRecognizer:tap]; //移除手势
}

参考资料:

http://www.jianshu.com/p/00d4fe5a3c1a

http://www.jianshu.com/p/b83aefdc9519

欢迎关注我的github:https://github.com/xiayuanquan

原文地址:https://www.cnblogs.com/XYQ-208910/p/5714352.html