How should the exported attribute be configured in Android?

In Android, the “exported” attribute is used to control whether a component can be accessed by other applications. The accessibility of a component can be controlled by configuring the “exported” attribute in the component tag in the AndroidManifest.xml file.

There are three different ways to configure the exported property.

1. The default value is true: if the exported property is not explicitly set, it defaults to true, indicating that the component can be accessed by other applications.

<activity android:name=".MainActivity">
    <!-- 默认情况下，该Activity可以被其他应用程序访问 -->
</activity>

1. Setting to true: Explicitly setting the exported attribute to true indicates that this component can be accessed by other applications.

<activity android:name=".MainActivity"
    android:exported="true">
    <!-- 该Activity可以被其他应用程序访问 -->
</activity>

1. Set to false: explicitly setting the exported attribute to false indicates that the component cannot be accessed by other applications.

<activity android:name=".MainActivity"
    android:exported="false">
    <!-- 该Activity不能被其他应用程序访问 -->
</activity>

By configuring the “exported” attribute, you can effectively control the accessibility of the component, ensuring the security and privacy of the application.