[Installer] Ensure package name before making (un)install attempts

Signed-off-by: Muntashir Al-Islam <muntashirakon@riseup.net>

Author: MuntashirAkon

app/src/main/java/io/github/muntashirakon/AppManager/apk/installer/PackageInstallerCompat.java

@@ -590,7 +590,7 @@ public boolean install(@NonNull ApkFile apkFile, @NonNull List<String> selectedS
         ThreadUtils.ensureWorkerThread();
         try {
             mApkFile = apkFile;
-            mPackageName = apkFile.getPackageName();
+            mPackageName = Objects.requireNonNull(apkFile.getPackageName());
             initBroadcastReceiver();
             int userId = options.getUserId();
             int installFlags = getInstallFlags(userId);
@@ -670,7 +670,7 @@ public boolean install(@NonNull Path[] apkFiles, @NonNull String packageName, @N
         ThreadUtils.ensureWorkerThread();
         try {
             mApkFile = null;
-            mPackageName = packageName;
+            mPackageName = Objects.requireNonNull(packageName);
             initBroadcastReceiver();
             int userId = options.getUserId();
             int installFlags = getInstallFlags(userId);
@@ -847,6 +847,7 @@ private static int getInstallFlags(@UserIdInt int userId) {
 
     public boolean installExisting(@NonNull String packageName, @UserIdInt int userId) {
         ThreadUtils.ensureWorkerThread();
+        mPackageName = Objects.requireNonNull(packageName);
         if (mOnInstallListener != null) {
             mOnInstallListener.onStartInstall(mSessionId, packageName);
         }
@@ -1033,7 +1034,7 @@ private void installCompleted(int sessionId,
     public boolean uninstall(String packageName, @UserIdInt int userId, boolean keepData) {
         ThreadUtils.ensureWorkerThread();
         boolean hasDeletePackagesPermission = SelfPermissions.checkSelfOrRemotePermission(Manifest.permission.DELETE_PACKAGES);
-        mPackageName = packageName;
+        mPackageName = Objects.requireNonNull(packageName);
         String callerPackageName = SelfPermissions.getCallingPackage(Users.getSelfOrRemoteUid());
         initBroadcastReceiver();
         try {