iOS App中第一次运行添加半透明新手指引

实现方式：

在当前View上一个蒙层，然后找出需要标记的地方圈为白色，那些箭头和提示文字都是UI做出来的图上自带的。

代码：

判断是第一次运行APP后进入页面调用

-(void)newGuide

{

    // 这里创建指引在这个视图在window上

    CGRect frame = [UIScreen mainScreen].bounds;

    UIView * bgView = [[UIView alloc]initWithFrame:frame];

    bgView.backgroundColor = HEX_RGBA(0x323232, 0.8);

    UITapGestureRecognizer * tap = [[UITapGestureRecognizer alloc]initWithTarget:self action:@selector(sureTapClick:)];

    [bgView addGestureRecognizer:tap];

    [[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 （这个是圆）

    [path appendPath:[UIBezierPath bezierPathWithArcCenter:CGPointMake(frame.size.width - 30, 42) radius:30 startAngle:0 endAngle:2*M_PI clockwise:NO]];

    // 这里添加第二个路径 （这个是矩形）

    //[path appendPath:[[UIBezierPath bezierPathWithRoundedRect:CGRectMake(frame.size.width/2.0-1, 234, frame.size.width/2.0+1, 55) cornerRadius:5] bezierPathByReversingPath]];

    CAShapeLayer *shapeLayer = [CAShapeLayer layer];

    shapeLayer.path = path.CGPath;

    //shapeLayer.strokeColor = [UIColor blueColor].CGColor;

    [bgView.layer setMask:shapeLayer];

    UIImageView * imageView = [[[UIImageView alloc]initWithFrame:CGRectMake(frame.size.width -300,72,270, 137)]autorelease];

    imageView.image = [UIImage imageNamed:@"backImage.jgp"];

    [bgView addSubview:imageView];

} 

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点击页面时调用

-(void)sureTapClick:(UITapGestureRecognizer *)tap

{

    UIView * view = tap.view;

    [view removeFromSuperview];

    [view removeAllSubviews];

    [view removeGestureRecognizer:tap];

    [[NSUserDefaults standardUserDefaults] setBool:YES forKey:@"firstCouponBoard_iPhone"];

}

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宏定义的颜色值

#undef HEX_RGBA

#define HEX_RGBA(V, A) [UIColor fromHexValue:V alpha:A]

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效果图：

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