In Android Studio, you can do this:
For example, if you want to change com.example.app to my.awesome.game, then:
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In your Project panel, click on the little gear icon (
) -
Uncheck the
Compact Empty Middle Packagesoption
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Your package directory will now be broken down into individual directories
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Individually select each directory you want to rename, and:
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Right-click on it
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Select
Refactor -
Click on
Rename -
In the pop-up dialog, click on
Rename Packageinstead of Rename Directory -
Enter the new name and hit Refactor
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Click Do Refactor in the bottom
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Allow a minute to let Android Studio update all changes
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Note: When renaming
comin Android Studio, it might give a warning. In such case, select Rename All
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Now open your Gradle Build File (
build.gradle– Usuallyappormobile). Update theapplicationIdin thedefaultConfigto your new Package Name and Sync Gradle, if it hasn’t already been updated automatically:
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You may need to change the
package=attribute in your manifest. -
Clean and Rebuild.

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Done! Anyway, Android Studio needs to make this process a little simpler.