Question: Is there a way for me to see what certain methods of built in Android classes look like? For example, If I create a TextView object called output. I can then use one of TextView's methods, for example setText, to display a text within the widget.

```
output.setText("Hello");

```

Is there a way to find the .setText method to manipulate or simply see how it works? There are a ton of built in methods that perform functions and I would like to take a closer look at how they were written. Thank you.

Answer: 
Hold CTRL (CMD for Mac) and click on the method you want to see the definition of. This will also work for user defined methods.

If you CTRL click on a variable it will take you to the declaration.
Goto Declaration
----------------

Goes to the declaration of the class, method or variable. Mostly useful on classes and methods since it redirects to the implementation.
`cmd+b` for Mac And `ctrl+b` for other .
For more information [Android Studio Shortcuts You Need the Most](http://javapapers.com/android/android-studio-shortcuts-you-need-the-most/)
and [Android Studio Tips & Tricks](http://www.developerphil.com/android-studio-tips-tricks-moving-around/)