Creating a custom Android theme from scratch can be quite the laborious task. In addition to designing, creating, and editing all the elements yourself, a testing phase is also essential to make sure that your theme is bug-free and working as it should. And unless you’re an absolute master at theming, chances are that you’ll need to rely on community feedback or an Android emulator in order to polish out those bugs.
XDA Forum Member steel89 offers an alternative approach to testing your custom themes. The solution comes in the form of an app called Theme Debugger. As its name suggests, the main function of this app is to expose any hidden bugs and other visual issues that may be present in your theme. It does this by presenting all the theme-able elements of the Android interface, ranging from buttons, radio and check buttons, to alert dialogs, toasts and notifications. Everything is then put in one place for you to test.
The app presents all the theme-able elements in a smooth and logical UI, with horizontally scrolling panels so you can quickly check for any visual discrepancies. And if you want to test another theme, you can do so at the navigation drawer which slides out from the left of the screen.
Both rookie and experienced themers alike will definitely find Theme Debugger to be a very useful app to have in their theming toolbox. If you would like to give this a go, visit the application thread for more information and download.