[package_info] calling new method for BuildNumber in new android versions (#1275)

Fixed flutter/flutter#28155
We kept the old method for backward compatibility.

Author: ivk1800

packages/package_info/CHANGELOG.md

@@ -1,3 +1,7 @@
+## 0.4.0+2
+
+* Android: Using new method for BuildNumber in new android versions
+
 ## 0.4.0+1
 
 * Log a more detailed warning at build time about the previous AndroidX

packages/package_info/android/src/main/java/io/flutter/plugins/packageinfo/PackageInfoPlugin.java

@@ -7,6 +7,7 @@
 import android.content.Context;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
+import android.os.Build;
 import io.flutter.plugin.common.MethodCall;
 import io.flutter.plugin.common.MethodChannel;
 import io.flutter.plugin.common.MethodChannel.MethodCallHandler;
@@ -42,7 +43,7 @@ public void onMethodCall(MethodCall call, Result result) {
         map.put("appName", info.applicationInfo.loadLabel(pm).toString());
         map.put("packageName", context.getPackageName());
         map.put("version", info.versionName);
-        map.put("buildNumber", String.valueOf(info.versionCode));
+        map.put("buildNumber", String.valueOf(getLongVersionCode(info)));
 
         result.success(map);
       } else {
@@ -52,4 +53,12 @@ public void onMethodCall(MethodCall call, Result result) {
       result.error("Name not found", ex.getMessage(), null);
     }
   }
+
+  private static long getLongVersionCode(PackageInfo info) {
+    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.P) {
+      return info.getLongVersionCode();
+    }
+    //noinspection deprecation
+    return info.versionCode;
+  }
 }

packages/package_info/pubspec.yaml

@@ -3,7 +3,7 @@ description: Flutter plugin for querying information about the application
   package, such as CFBundleVersion on iOS or versionCode on Android.
 author: Flutter Team <[email protected]>
 homepage: https://github.com/flutter/plugins/tree/master/packages/package_info
-version: 0.4.0+1
+version: 0.4.0+2
 
 flutter:
   plugin: