Make some changes to the Android port

- Add application category and description
- Hide system navigation bar
- Change documents provider name to application name
- Disable multi-window mode support because touch controls don't work in this mode

app/app/build.gradle

@@ -81,8 +81,9 @@ android {
 dependencies {
     implementation 'androidx.annotation:annotation:1.5.0'
     implementation 'androidx.appcompat:appcompat:1.6.0'
-    implementation 'com.google.android.material:material:1.8.0-rc01'
     implementation 'androidx.constraintlayout:constraintlayout:2.1.1'
+    implementation 'androidx.core:core:1.9.0'
+    implementation 'com.google.android.material:material:1.8.0'
 }
 
 println("cargo target: ${project.buildDir.getAbsolutePath()}/rust-target")

app/app/src/main/AndroidManifest.xml

@@ -6,9 +6,13 @@
 
     <application
         android:allowBackup="true"
+        android:appCategory="game"
+        android:description="@string/app_description"
         android:extractNativeLibs="true"
         android:icon="@mipmap/ic_launcher"
+        android:isGame="true"
         android:label="@string/app_name"
+        android:resizeableActivity="false"
         android:roundIcon="@mipmap/ic_launcher_round"
         android:supportsRtl="true"
         android:theme="@style/Theme.Doukutsurs">

app/app/src/main/java/io/github/doukutsu_rs/ActivityUtils.java

@@ -0,0 +1,16 @@
+package io.github.doukutsu_rs;
+
+import android.app.Activity;
+import android.view.Window;
+import androidx.core.view.WindowCompat;
+import androidx.core.view.WindowInsetsCompat;
+import androidx.core.view.WindowInsetsControllerCompat;
+
+public class ActivityUtils {
+    public static void hideSystemBars(Activity activity) {
+        Window window = activity.getWindow();
+        WindowInsetsControllerCompat windowInsetsController =
+            WindowCompat.getInsetsController(window, window.getDecorView());
+        windowInsetsController.hide(WindowInsetsCompat.Type.systemBars());
+    }
+}

app/app/src/main/java/io/github/doukutsu_rs/DoukutsuDocumentsProvider.java

@@ -64,7 +64,7 @@ public class DoukutsuDocumentsProvider extends DocumentsProvider {
         row.add(Root.COLUMN_ROOT_ID, id);
         row.add(Root.COLUMN_ICON, R.mipmap.ic_launcher);
         row.add(Root.COLUMN_TITLE,
-                getContext().getString(R.string.document_provider_name));
+                getContext().getString(R.string.app_name));
         row.add(Root.COLUMN_MIME_TYPES, "*/*");
         row.add(Root.COLUMN_AVAILABLE_BYTES, file.getFreeSpace());
         row.add(Root.COLUMN_FLAGS, Root.FLAG_SUPPORTS_IS_CHILD | Root.FLAG_SUPPORTS_CREATE);

app/app/src/main/java/io/github/doukutsu_rs/DownloadActivity.java

@@ -3,9 +3,9 @@ package io.github.doukutsu_rs;
 import android.content.Intent;
 import android.os.Bundle;
 import android.os.Handler;
-import androidx.appcompat.app.AppCompatActivity;
 import android.widget.ProgressBar;
 import android.widget.TextView;
+import androidx.appcompat.app.AppCompatActivity;
 
 import java.io.*;
 import java.net.HttpURLConnection;
@@ -28,6 +28,8 @@ public class DownloadActivity extends AppCompatActivity {
         setContentView(R.layout.activity_download);
         txtProgress = findViewById(R.id.txtProgress);
         progressBar = findViewById(R.id.progressBar);
+        ActivityUtils.hideSystemBars(this);
+
         basePath = getFilesDir().getAbsolutePath() + "/";
 
         downloadThread = new DownloadThread();
@@ -50,7 +52,7 @@ public class DownloadActivity extends AppCompatActivity {
             this.filesWhitelist.add("data/");
             this.filesWhitelist.add("Doukutsu.exe");
 
-            //BE CAREFUL, DON'T SET `true` VALUE FOR TRANSLATIONS
+            // DON'T SET `true` VALUE FOR TRANSLATIONS
             this.urls.add(new DownloadEntry(R.string.download_entries_base, "https://www.cavestory.org/downloads/cavestoryen.zip", true));
 
             for (DownloadEntry entry : this.urls) {

app/app/src/main/java/io/github/doukutsu_rs/GameActivity.java

@@ -25,6 +25,8 @@ public class GameActivity extends NativeActivity {
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
 
+        ActivityUtils.hideSystemBars(this);
+
         listener = new OrientationEventListener(this, SensorManager.SENSOR_DELAY_UI) {
             @Override
             public void onOrientationChanged(int orientation) {

app/app/src/main/java/io/github/doukutsu_rs/MainActivity.java

@@ -3,7 +3,6 @@ package io.github.doukutsu_rs;
 import android.app.AlertDialog;
 import android.content.Intent;
 import android.os.Bundle;
-
 import androidx.appcompat.app.AppCompatActivity;
 
 import java.io.File;
@@ -15,10 +14,12 @@ public class MainActivity extends AppCompatActivity {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
 
+        ActivityUtils.hideSystemBars(this);
+
         File f = new File(getFilesDir().getAbsolutePath() + "/data/");
         String[] list = f.list();
         if (!f.exists() || (list != null && list.length == 0)) {
-            messageBox(getString(R.string.download_title), getString(R.string.download_desc), () -> {
+            messageBox(getString(R.string.missing_data_title), getString(R.string.missing_data_desc), () -> {
                 Intent intent = new Intent(this, DownloadActivity.class);
                 intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK | Intent.FLAG_ACTIVITY_CLEAR_TASK | Intent.FLAG_ACTIVITY_CLEAR_TOP);
                 startActivity(intent);

app/app/src/main/res/layout/activity_download.xml

@@ -22,7 +22,7 @@
             android:id="@+id/txtTitle"
             android:layout_width="match_parent"
             android:layout_height="wrap_content"
-            android:text="Downloading game data"
+            android:text="@string/download_title"
             android:textAlignment="center"
             android:textAppearance="@style/TextAppearance.AppCompat.Display1" />
 

app/app/src/main/res/values/strings.xml

@@ -1,10 +1,11 @@
 <resources>
     <string name="app_name" translatable="false">doukutsu-rs</string>
-    <string name="document_provider_name">doukutsu-rs game data</string>
+    <string name="app_description">A faithful and open-source remake of Cave Story engine written in Rust.</string>
 
-    <string name="download_title">Missing data files</string>
-    <string name="download_desc">No data files found, would you like to download them?</string>
+    <string name="missing_data_title">Missing data files</string>
+    <string name="missing_data_desc">No data files found, would you like to download them?</string>
 
+    <string name="download_title">Downloading game data</string>
     <string name="download_status_error_http">Bad HTTP response code: %d</string>
     <!-- Downloading {entry_name}… {progress}% ({downloaded_size}/{total_size} KiB, {speed} KiB/s) -->
     <string name="download_status_downloading">Downloading %1$s… %2$d%% (%3$d/%4$d KiB, %5$d KiB/s)</string>