Android: some java-part improvements (#9760)

Replace Log to Toast.
Start Native only after successful unpacking.
Light refactoring in CopyZipTask.
Update NDK version.

Co-authored-by: ubulem <berkut87@gmail.com>

build/android/app/build.gradle

@@ -2,12 +2,11 @@ apply plugin: 'com.android.application'
 android {
 	compileSdkVersion 29
 	buildToolsVersion '29.0.3'
-	ndkVersion '21.0.6113669'
+	ndkVersion '21.1.6352462'
 	defaultConfig {
 		applicationId 'net.minetest.minetest'
 		minSdkVersion 16
-		//noinspection OldTargetApi
-		targetSdkVersion 28 // Workaround for using `/sdcard` instead of the `data` patch for assets
+		targetSdkVersion 29
 		versionName "${versionMajor}.${versionMinor}.${versionPatch}"
 		versionCode project.versionCode
 	}

build/android/app/src/main/AndroidManifest.xml

@@ -7,11 +7,18 @@
 	<uses-permission android:name="android.permission.INTERNET" />
 	<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
 
+	<!--
+		`android:requestLegacyExternalStorage="true"` is workaround for using `/sdcard`
+		instead of the `getFilesDir()` patch for assets. Check link below for more information:
+		https://developer.android.com/training/data-storage/compatibility
+	-->
+
 	<application
 		android:allowBackup="false"
 		android:icon="@mipmap/ic_launcher"
 		android:label="@string/label"
 		android:resizeableActivity="false"
+		android:requestLegacyExternalStorage="true"
 		tools:ignore="UnusedAttribute">
 
 		<meta-data

build/android/app/src/main/java/net/minetest/minetest/CopyZipTask.java

@@ -23,7 +23,7 @@ package net.minetest.minetest;
 import android.content.Context;
 import android.content.Intent;
 import android.os.AsyncTask;
-import android.util.Log;
+import android.widget.Toast;
 
 import java.io.FileOutputStream;
 import java.io.IOException;
@@ -40,7 +40,7 @@ public class CopyZipTask extends AsyncTask<String, Void, String> {
 	}
 
 	protected String doInBackground(String... params) {
-		copyAssets(params);
+		copyAsset(params[0]);
 		return params[0];
 	}
 
@@ -49,20 +49,13 @@ public class CopyZipTask extends AsyncTask<String, Void, String> {
 		startUnzipService(result);
 	}
 
-	private void copyAsset(String zipName) throws IOException {
+	private void copyAsset(String zipName) {
 		String filename = zipName.substring(zipName.lastIndexOf("/") + 1);
 		try (InputStream in = contextRef.get().getAssets().open(filename);
 		     OutputStream out = new FileOutputStream(zipName)) {
 			copyFile(in, out);
-		}
-	}
-
-	private void copyAssets(String[] zips) {
-		try {
-			for (String zipName : zips)
-				copyAsset(zipName);
 		} catch (IOException e) {
-			Log.e("CopyZipTask", e.getLocalizedMessage());
+			Toast.makeText(contextRef.get(), e.getLocalizedMessage(), Toast.LENGTH_LONG).show();
 			cancel(true);
 		}
 	}

build/android/app/src/main/java/net/minetest/minetest/MainActivity.java

@@ -43,6 +43,11 @@ import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 
+import static net.minetest.minetest.UnzipService.ACTION_PROGRESS;
+import static net.minetest.minetest.UnzipService.ACTION_UPDATE;
+import static net.minetest.minetest.UnzipService.FAILURE;
+import static net.minetest.minetest.UnzipService.SUCCESS;
+
 public class MainActivity extends AppCompatActivity {
 	private final static int versionCode = BuildConfig.VERSION_CODE;
 	private final static int PERMISSIONS = 1;
@@ -58,14 +63,16 @@ public class MainActivity extends AppCompatActivity {
 		public void onReceive(Context context, Intent intent) {
 			int progress = 0;
 			if (intent != null)
-				progress = intent.getIntExtra(UnzipService.ACTION_PROGRESS, 0);
+				progress = intent.getIntExtra(ACTION_PROGRESS, 0);
 			if (progress >= 0) {
 				if (mProgressBar != null) {
 					mProgressBar.setVisibility(View.VISIBLE);
 					mProgressBar.setProgress(progress);
 				}
 				mTextView.setVisibility(View.VISIBLE);
-			} else
+			} else if (progress == FAILURE) {
+				finish();
+			} else if (progress == SUCCESS)
 				startNative();
 		}
 	};
@@ -74,7 +81,7 @@ public class MainActivity extends AppCompatActivity {
 	public void onCreate(Bundle savedInstanceState) {
 		super.onCreate(savedInstanceState);
 		setContentView(R.layout.activity_main);
-		IntentFilter filter = new IntentFilter(UnzipService.ACTION_UPDATE);
+		IntentFilter filter = new IntentFilter(ACTION_UPDATE);
 		registerReceiver(myReceiver, filter);
 		mProgressBar = findViewById(R.id.progressBar);
 		mTextView = findViewById(R.id.textView);

build/android/app/src/main/java/net/minetest/minetest/UnzipService.java

@@ -28,11 +28,10 @@ import android.content.Context;
 import android.content.Intent;
 import android.os.Build;
 import android.os.Environment;
-import android.util.Log;
+import android.widget.Toast;
 
 import java.io.File;
 import java.io.FileInputStream;
-import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.OutputStream;
@@ -44,9 +43,12 @@ public class UnzipService extends IntentService {
 	public static final String ACTION_UPDATE = "net.minetest.minetest.UPDATE";
 	public static final String ACTION_PROGRESS = "net.minetest.minetest.PROGRESS";
 	public static final String EXTRA_KEY_IN_FILE = "file";
+	public static final int SUCCESS = -1;
+	public static final int FAILURE = -2;
 	private static final String TAG = "UnzipService";
 	private final int id = 1;
 	private NotificationManager mNotifyManager;
+	private boolean isSuccess = true;
 
 	public UnzipService() {
 		super("net.minetest.minetest.UnzipService");
@@ -120,10 +122,9 @@ public class UnzipService extends IntentService {
 				}
 				zipFile.delete();
 			}
-		} catch (FileNotFoundException e) {
-			Log.e(TAG, e.getLocalizedMessage());
 		} catch (IOException e) {
-			Log.e(TAG, e.getLocalizedMessage());
+			isSuccess = false;
+			Toast.makeText(this, e.getLocalizedMessage(), Toast.LENGTH_LONG).show();
 		}
 	}
 
@@ -139,7 +140,7 @@ public class UnzipService extends IntentService {
 			ZipFile zipSize = new ZipFile(zip);
 			size += zipSize.size();
 		} catch (IOException e) {
-			Log.e(TAG, e.getLocalizedMessage());
+			Toast.makeText(this, e.getLocalizedMessage(), Toast.LENGTH_LONG).show();
 		}
 		return size;
 	}
@@ -148,6 +149,6 @@ public class UnzipService extends IntentService {
 	public void onDestroy() {
 		super.onDestroy();
 		mNotifyManager.cancel(id);
-		publishProgress(-1);
+		publishProgress(isSuccess ? SUCCESS : FAILURE);
 	}
 }

build/android/native/build.gradle

@@ -4,7 +4,7 @@ import org.ajoberstar.grgit.Grgit
 android {
 	compileSdkVersion 29
 	buildToolsVersion '29.0.3'
-	ndkVersion '21.0.6113669'
+	ndkVersion '21.1.6352462'
 	defaultConfig {
 		minSdkVersion 16
 		targetSdkVersion 29