To allow installation on external storage and remain compatible with versions lower than API Or greater and still be compatible with devices using an API Level lower than 8. However, if your application is designed to support anĪPI Level lower than 8, you can choose to support this feature for devices with API Level 8 Storage (even on devices with API Level 8).
To API Level 8 will always install on the internal storage and cannot be moved to the external Existing applications that were built prior On devices running API Level 8 (Android 2.2) or greater. The ability for your application to install on the external storage is a feature available only
With a computer or unmounts the SD card via the system settings, the external storage is unmountedįrom the device and all applications running on the external storage are immediately killed. Warning: When the user enables USB mass storage to share files
The user can move your application to the internal storage through the system settings. Thus, anĪpplication installed on an SD card works for only one device. Generated key that can be decrypted only by the device that originally installed it. The unique container in which your application is stored is encrypted with a randomly. dex files, and extracted native code are saved on the apk file is saved on the external storage, but all private user data,ĭatabases, optimized. 
There is no effect on the application performance so longĪs the external storage is mounted on the device. When your application is installed on the external storage: The system willĭecide where to install your application based on several factors. If you declare " auto", you indicate that your application may be installed on theĮxternal storage, but you don't have a preference of install location. The user can also move your application between the two locations. If the external storage is full, the system will install it on the internal If you declare " preferExternal", you request that your application be installed on theĮxternal storage, but the system does not guarantee that your application will be installed on With a value of either " preferExternal" or " auto". Manifest file to include the android:installLocation attribute in the element, To allow the system to install your application on the external storage, modify your Only and it cannot be moved to the external storage. Not declare this attribute, your application will be installed on the internal storage This is an optional feature you can declareįor your application with the android:installLocation manifest attribute. Beginning with API Level 8, you can allow your application to be installed on theĮxternal storage (for example, the device's SD card).
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