How to change Pakage name in Android studio

Changing Package Name in Android Studio

There are 2 steps to properly change the package name:

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Step 1: Refactor the Package Name

1. In the Project panel, switch view to Android
2. Expand app → java
3. Right-click on your package name (e.g., com.example.myapp)
4. Select Refactor → Rename
5. A dialog will appear — click “Rename Package”
6. Type your new package name
7. Click Refactor and then Do Refactor

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Step 2: Update in AndroidManifest.xml

1. Go to app → manifests → AndroidManifest.xml
2. Find and update the package attribute:

   <manifest xmlns:android="..."
       package="com.newname.myapp">

3. Save the file

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Step 3: Update in build.gradle

1. Go to app → build.gradle
2. Find applicationId and update it:

   android {
       defaultConfig {
           applicationId "com.newname.myapp"
           ...
       }
   }

3. Click “Sync Now” when prompted

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Step 4: Clean & Rebuild

Go to Build → Clean Project, then Build → Rebuild Project

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⚠️ Important: Make sure all three places match exactly:

• Folder package name
• AndroidManifest.xml
• build.gradle (applicationId)

If they don’t match, the app will throw build errors.