How do I get my application Version

任何人都可以告诉我如何获得Android应用版本？

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This page has a tips on how to do it from java:

PackageManager manager = context.getPackageManager();
PackageInfo info = manager.getPackageInfo(
    context.getPackageName(), 0);
String version = info.versionName;

Also, this link has official information on how to properly set up your application versioning.

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I am using Android Studio, I realized I could use one line code to get this.

/*version name*/
BuildConfig.VERSION_NAME

/*version code*/
BuildConfig.VERSION_CODE

Edited:

If you are using other android libraries, make sure you import BuildConfig from your application package. This is similar to the automatically generated R class for identifying resources.

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要获取应用程序信息：

PackageManager manager = this.getPackageManager();
try {
   PackageInfo info = manager.getPackageInfo(this.getPackageName(), 0);
   String packageName = info.packageName;
   int versionCode = info.versionCode;
   String versionName = info.versionName;
   } catch (NameNotFoundException e) {
   // TODO Auto-generated catch block
   }

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