In Android, you can set the application version information in the project's manifest file and also access it programmatically in your code. Let's go through the steps in detail:
1. Open the AndroidManifest.xml file in your project.
2. Locate the `<manifest>` tag, which is the root element of the manifest file.
3. Inside the `<manifest>` tag, add the `android:versionCode` and `android:versionName` attributes to specify the version information.
- `android:versionCode`: This attribute is used to set the version code of the application, which is an integer value that represents the version. The version code must be incremented for each new release to ensure that the newer version has a higher value than the previous version.
Ex: `android:versionCode="1"`
- `android:versionName`: This attribute is used to set the version name of the application, which is a user-friendly string that represents the version. The version name can be any string value that helps users understand the version information.
Ex: `android:versionName="1.0"`
4. Save the manifest file.
Accessing Application Version Information Programmatically:
To access the application version information programmatically, you can use the `PackageManager` class to retrieve the version code and version name. Here's how:
a) Import the necessary classes at the top of your Java or Kotlin file:
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
b) Inside your activity or any other relevant class, use the following code snippet to retrieve the version information:
try {
PackageInfo packageInfo = getPackageManager().getPackageInfo(getPackageName(), 0);
int versionCode = packageInfo.versionCode;
String versionName = packageInfo.versionName;
// Now you can use the versionCode and versionName as needed
// For example, log the version information
Log.d("App Version", "Version Code: " + versionCode);
Log.d("App Version", "Version Name: " + versionName);
} catch (PackageManager.NameNotFoundException e) {
e.printStack
Trace();
}
C) The `getPackageInfo()` method retrieves the package information for the current application using the package name (`getPackageName()`). It returns a `PackageInfo` object containing various details about the package, including the version code and version name.
d) The `versionCode` and `versionName` variables can be used in your code as required. In the example above, the version information is logged using `Log.d()`.
By setting the application version information in the manifest file and accessing it programmatically, you can display the version to users, perform version-specific actions, or include it in crash reports or analytics data.
