<manifest xmlns:android="http://schemas.android.com/apk/res/android" package="string" android:sharedUserId="string" android:sharedUserLabel="string resource" android:versionCode="integer" android:versionName="string" android:installLocation=["auto" | "internalOnly" | "preferExternal"] > . . . </manifest>
<application>element and specify
The package name serves as a unique identifier for the application. It's also the default name for the application process (see the
process process attribute) and the default task affinity of an activity (see the
This attribute was introduced in API Level 3. It is meaningful only if the
sharedUserId attribute is also set.
The value must be set as an integer, such as "100". You can define it however you want, as long as each successive version has a higher number. For example, it could be a build number. Or you could translate a version number in "x.y" format to an integer by encoding the "x" and "y" separately in the lower and upper 16 bits. Or you could simply increase the number by one each time a new version is released.
versionCodeattribute holds the significant version number used internally.
The following keyword strings are accepted:
||The application must be installed on the internal device storage only. If this is set, the application will never be installed on the external storage. If the internal storage is full, then the system will not install the application. This is also the default behavior if you do not define
||The application may be installed on the external storage, but the system will install the application on the internal storage by default. If the internal storage is full, then the system will install it on the external storage. Once installed, the user can move the application to either internal or external storage through the system settings.|
||The application prefers to be installed on the external storage (SD card). There is no guarantee that the system will honor this request. The application might be installed on internal storage if the external media is unavailable or full, or if the application uses the forward-locking mechanism (not supported on external storage). Once installed, the user can move the application to either internal or external storage through the system settings.|
Caution: If your application uses the Android Market's Copy Protection feature, it cannot be installed to a device's SD card. However, if you use Android Market's Application Licensing instead, your application can be installed to internal or external storage, including SD cards.
Note: By default, your application will be installed on the internal storage and cannot be installed on the external storage unless you define this attribute to be either "
auto" or "
When an application is installed on the external storage:
.apkfile is saved to the external storage, but any application data (such as databases) is still saved on the internal device memory.
.apkfile is saved is encrypted with a key that allows the application to operate only on the device that installed it. (A user cannot transfer the SD card to another device and use applications installed on the card.) Though, multiple SD cards can be used with the same device.
The user may also request to move an application from the internal storage to the external storage. However, the system will not allow the user to move the application to external storage if this attribute is set to
internalOnly, which is the default setting.
Read App Install Location for more information about using this attribute (including how to maintain backward compatibility).
Introduced in: API Level 8.