title: How to easily "Show Layout bounds" for Android debugging?
body: <p>I want to watch the layout of App without boring tap and tap. </p>
  
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  <p>I tried <code>adb shell setprop debug.layout true</code> but <strong>didn't work</strong> unless reboot or open setting.<br>
  This may caused by setting haven't update.   </p>
  
  <p>I tried to writing a little App with code <code>SystemProperties.set("debug.layout", "true")</code> , no use too.<br>
  Maybe the app's authority…</p>
  
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  <p>Sorry for my poor English and appreciation for help :p</p>