UIDebuggingInformationOverlay的使用

今天看微博的一些大牛都在转UIDebuggingInformationOverlay的发现。原文链接.

使用方法如下：

第一种：启动之后直接显示

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    Class overlay = NSClassFromString(@"UIDebuggingInformationOverlay");
    [[overlay class] performSelector:NSSelectorFromString(@"prepareDebuggingOverlay")];
    UIWindow *overlayWindow =  (UIWindow *)[[overlay class] performSelector:NSSelectorFromString(@"overlay")];
    [overlayWindow performSelector:NSSelectorFromString(@"toggleVisibility")];
    return YES;
}

第二种：双指同时点击状态栏显示

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    Class overlay = NSClassFromString(@"UIDebuggingInformationOverlay");
    [[overlay class] performSelector:NSSelectorFromString(@"prepareDebuggingOverlay")];
//    UIWindow *overlayWindow =  (UIWindow *)[[overlay class] performSelector:NSSelectorFromString(@"overlay")];
//    [overlayWindow performSelector:NSSelectorFromString(@"toggleVisibility")];
    return YES;
}

效果如下：

Simulator Screen Shot 2017年5月27日 下午2.04.01.png

注：虽然可以窗口弹出来了，但作为iOS小小白，还没能好好利用它的作用，可能平时调试的也小。具体作用就等其他大牛出了~😆