Cycript的基本用法

cycript -p PID_or_AppName

进入cy#开头的命令行界面，即表示注入成功，可以开始调试了

Cycript中常用命令

调试ObjC对象的命令

[UIApplication sharedApplication]

UIApp.keyWindow.recursiveDescription().toString()

var topView = [[[[UIApplication sharedApplication] keyWindow] subviews] lastObject]
[topView recursiveDescription].toString()

var p = new Instance(0x157d1e200)

打印最顶层页面/窗口

背景知识是，iOS的ObjC的获取最顶层的窗口：

[[[[UIApplication sharedApplication] keyWindow] subviews] lastObject]

放到Cycript中：

[[[[[UIApplication sharedApplication] keyWindow] subviews] lastObject] recursiveDescription].toString()

进一步优化：

写成变量，便于后续引用：

var topView = [[[[UIApplication sharedApplication] keyWindow] subviews] lastObject]
[topView recursiveDescription].toString()

打印页面详情

已有视图view：

cy [[[[UIApplication sharedApplication] keyWindow] subviews] lastObject]
#"<UITransitionView: 0x11f9059e0; frame = (0 0; 375 667); autoresize = W+H; layer = <CALayer: 0x280129300>>"

去打印页面详情，以字符串输出，是：

• 先：recursiveDescription
• 再：toString

即：

var topView = [[[[UIApplication sharedApplication] keyWindow] subviews] lastObject]
[topView recursiveDescription].toString()