Android 11.0 compatibility (#195)

* Update dependencies and target SDK
* Update Gradle to 6.6.1
* Update target API level to 30
* Update AGP to 4.0.1
* Update Android Build Dependencies (androidx.appcompat:appcompat:1.2.0, androidx.multidex:multidex:2.0.1)
* Update readme
* Move /sdcard/lovegame directory. (closes #194)
* Potentially fixes black screen when reopening LOVE from app drawer (fixes #190)
* Downloader cleanup.
* Merge SDL AndroidManifest.xml to LOVE
* Implement partial "Share to LOVE" support.
* Enable resizeableActivity

love/src/jni/SDL2/android-project/app/src/main/java/org/libsdl/app/SDLActivity.java

@@ -243,6 +243,8 @@ public class SDLActivity extends Activity implements View.OnSystemUiVisibilityCh
 
     // love2d-mod-start: allow restarting of the native thread
     public void startNative() {
+        boolean hadSDLThread = SDLActivity.mSDLThread != null;
+
         // Set up JNI
         SDL.setupJNI();
 
@@ -283,6 +285,10 @@ public class SDLActivity extends Activity implements View.OnSystemUiVisibilityCh
                 SDLActivity.onNativeDropFile(filename);
             }
         }
+
+        if (hadSDLThread) {
+            resumeNativeThread();
+        }
     }
     // love2d-mod-end: allow restarting of the native thread
 

love/src/main/java/org/love2d/android/GameActivity.java

@@ -38,7 +38,6 @@ import android.content.Intent;
 import android.media.AudioManager;
 import android.net.Uri;
 import android.os.Bundle;
-import android.os.Environment;
 import android.os.Vibrator;
 import android.util.Log;
 import android.util.DisplayMetrics;
@@ -112,6 +111,7 @@ public class GameActivity extends SDLActivity {
         storagePermissionUnnecessary = false;
         embed = context.getResources().getBoolean(R.bool.embed);
 
+        // Get filename from "Open with" of another application
         handleIntent(this.getIntent());
 
         super.onCreate(savedInstanceState);
@@ -134,7 +134,17 @@ public class GameActivity extends SDLActivity {
     }
 
     protected void handleIntent(Intent intent) {
-        Uri game = intent.getData();
+        Uri game = null;
+
+        // Try to handle "Share" intent.
+        // This is actually "bit tricky" to get working in user phone
+        // because shared static variables issue in the native side
+        // (user have to clear LOVE for Android in their recent apps list).
+        if (Intent.ACTION_SEND.equals(intent.getAction())) {
+            game = (Uri) intent.getParcelableExtra(Intent.EXTRA_STREAM);
+        } else {
+            game = intent.getData();
+        }
 
         if (!embed && game != null) {
             String scheme = game.getScheme();
@@ -229,17 +239,13 @@ public class GameActivity extends SDLActivity {
     }
 
     protected void checkLovegameFolder() {
-        // If no game.love was found fall back to the game in <external storage>/lovegame
-        // if using normal or playstore build
+        // If no game.love was found and embed flavor is not used, fall back to the game in
+        // <external storage>/Android/data/<package name>/games/lovegame
         if (!embed) {
             Log.d("GameActivity", "fallback to lovegame folder");
-            if (hasExternalStoragePermission()) {
-                File ext = Environment.getExternalStorageDirectory();
-                if ((new File(ext, "/lovegame/main.lua")).exists()) {
-                    gamePath = ext.getPath() + "/lovegame/";
-                }
-            } else {
-                Log.d("GameActivity", "Cannot load game from /sdcard/lovegame: permission not granted");
+            File ext = getExternalFilesDir("games");
+            if ((new File(ext, "/lovegame/main.lua")).exists()) {
+                gamePath = ext.getPath() + "/lovegame/";
             }
         }
     }
@@ -295,7 +301,6 @@ public class GameActivity extends SDLActivity {
             } else {
                 Log.d("GameActivity", "cannot open game " + gamePath + ": no external storage permission given!");
             }
-
         } else {
             self.checkLovegameFolder();
             if (gamePath.length() > 0)

love/src/normal/java/org/love2d/android/DownloadActivity.java

@@ -27,6 +27,7 @@ import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.Manifest;
 import android.net.Uri;
+import android.os.Build;
 import android.os.Bundle;
 import android.util.Log;
 
@@ -37,7 +38,7 @@ public class DownloadActivity extends Activity {
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
-        if (android.os.Build.VERSION.SDK_INT >= 29 ||
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q ||
             ActivityCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED)
         {
             runDownloader();

love/src/normal/java/org/love2d/android/DownloadService.java

@@ -60,14 +60,14 @@ public class DownloadService extends IntentService {
         request.setTitle(uri.getLastPathSegment());
         request.setMimeType("application/x-love-game");
 
-        // in order for this if to run, you must use the android 3.2 to compile your app
-        if (Build.VERSION.SDK_INT >= 11) {
-            DownloadRequestSettings_API11 settings = new DownloadRequestSettings_API11();
-            settings.setup(request);
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {
+            request.allowScanningByMediaScanner();
         }
-        request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, uri.getLastPathSegment());
-        // get download service and enqueue file
 
+        request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
+        request.setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, uri.getLastPathSegment());
+
+        // get download service and enqueue file
         Log.d("DownloadActivity", "creating manager");
         DownloadManager manager = (DownloadManager) getSystemService(Context.DOWNLOAD_SERVICE);
         Log.d("DownloadActivity", "enqueuing download");
@@ -78,26 +78,6 @@ public class DownloadService extends IntentService {
         registerReceiver(downloadReceiver, intentFilter);
     }
 
-    /**
-     * @param context used to check the device version and DownloadManager information
-     * @return true if the download manager is available
-     */
-    public static boolean isDownloadManagerAvailable(Context context) {
-        try {
-            if (Build.VERSION.SDK_INT < Build.VERSION_CODES.GINGERBREAD) {
-                return false;
-            }
-            Intent intent = new Intent(Intent.ACTION_MAIN);
-            intent.addCategory(Intent.CATEGORY_LAUNCHER);
-            intent.setClassName("com.android.providers.downloads.ui", "com.android.providers.downloads.ui.DownloadList");
-            List<ResolveInfo> list = context.getPackageManager().queryIntentActivities(intent,
-                    PackageManager.MATCH_DEFAULT_ONLY);
-            return list.size() > 0;
-        } catch (Exception e) {
-            return false;
-        }
-    }
-
     private BroadcastReceiver downloadReceiver = new BroadcastReceiver() {
 
         @Override
@@ -107,10 +87,3 @@ public class DownloadService extends IntentService {
         }
     };
 }
-
-class DownloadRequestSettings_API11 {
-    public static void setup(DownloadManager.Request request) {
-        request.allowScanningByMediaScanner();
-        request.setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED);
-    }
-}