android various fixes and improv

android/res/values-ru/strings.xml

@@ -24,4 +24,5 @@
     <string name="battery_optimizations_enabled_dialog"   >Ваша операционная система осуществляет оптимизации расхода аккумулятора, которые могут приводить к выгрузке I2PD из памяти и прекращению его работы с целью сэкономить заряд аккумулятора.\n\nВам сейчас будет предложено разрешить отключение этих оптимизаций.</string>
     <string name="continue_str">Продолжить</string>
     <string name="os_version_does_not_support_battery_optimizations_show_os_dialog_api">Ваша версия Андроид не поддерживает показ диалога об оптимизациях аккумулятора для приложений.</string>
+    <string name="shutdown_canceled">Плановая остановка отменена</string>
 </resources>

android/res/values/strings.xml

@@ -24,4 +24,5 @@
     <string name="device_does_not_support_disabling_battery_optimizations">Your Android version does not support opting out of battery optimizations</string>
     <string name="menu_item_battery_optimizations_str">Battery Optimizations</string>
     <string name="os_version_does_not_support_battery_optimizations_show_os_dialog_api">Your Android OS version does not support showing the dialog for battery optimizations for applications.</string>
+    <string name="shutdown_canceled">Planned shutdown canceled</string>
 </resources>

android/src/org/purplei2p/i2pd/I2PDActivity.java

@@ -44,7 +44,6 @@ import androidx.core.app.ActivityCompat;
 import androidx.core.content.ContextCompat;
 
 // For future package update checking
-import org.purplei2p.i2pd.BuildConfig;
 
 import static android.provider.Settings.ACTION_IGNORE_BATTERY_OPTIMIZATION_SETTINGS;
 
@@ -86,6 +85,7 @@ public class I2PDActivity extends Activity {
 	};
 	private static volatile long graceStartedMillis;
 	private static final Object graceStartedMillis_LOCK=new Object();
+	private Menu optionsMenu;
 
 	private static String formatGraceTimeRemaining() {
 		long remainingSeconds;
@@ -138,7 +138,7 @@ public class I2PDActivity extends Activity {
 		super.onDestroy();
 		textView = null;
 		daemon.removeStateChangeListener(daemonStateUpdatedListener);
-		//cancelGracefulStop();
+		//cancelGracefulStop0();
 		try{
 			doUnbindService();
 			}catch(Throwable tr){
@@ -160,7 +160,7 @@ public class I2PDActivity extends Activity {
         }
 	}
 
-	private static void cancelGracefulStop() {
+	private void cancelGracefulStop0() {
 		Timer gracefulQuitTimer = getGracefulQuitTimer();
 		if(gracefulQuitTimer!=null) {
 			gracefulQuitTimer.cancel();
@@ -232,6 +232,7 @@ public class I2PDActivity extends Activity {
 		// Inflate the menu; this adds items to the action bar if it is present.
 		getMenuInflater().inflate(R.menu.options_main, menu);
 		menu.findItem(R.id.action_battery_otimizations).setVisible(isBatteryOptimizationsOpenOsDialogApiAvailable());
+		this.optionsMenu = menu;
 		return true;
 	}
 
@@ -251,14 +252,10 @@ public class I2PDActivity extends Activity {
 			i2pdStop();
 			return true;
 			case R.id.action_graceful_stop:
-				if (getGracefulQuitTimer()!= null)
-				{
-					item.setTitle(R.string.action_graceful_stop);
-					i2pdCancelGracefulStop ();
-				}
+				synchronized (graceStartedMillis_LOCK) {
+					if (getGracefulQuitTimer() != null)
+						cancelGracefulStop();
 					else
-				{
-					item.setTitle(R.string.action_cancel_graceful_stop);	
 						i2pdGracefulStop();
 				}
 				return true;
@@ -282,7 +279,7 @@ public class I2PDActivity extends Activity {
 	}
 
 	private void i2pdStop() {
-		cancelGracefulStop();
+		cancelGracefulStop0();
 		new Thread(() -> {
             Log.d(TAG, "stopping");
             try {
@@ -329,16 +326,17 @@ public class I2PDActivity extends Activity {
         },"gracInit").start();
 	}
 	
-	private void i2pdCancelGracefulStop() 
+	private void cancelGracefulStop()
 	{
-		cancelGracefulStop();
-		Toast.makeText(this, R.string.startedOkay, Toast.LENGTH_SHORT).show();
+		cancelGracefulStop0();
 		new Thread(() -> {
             try
             {
-                Log.d(TAG, "grac stopping cancel");
-                if(daemon.isStartedOkay())
+                Log.d(TAG, "canceling grac stop");
+                if(daemon.isStartedOkay()) {
 					daemon.startAcceptingTunnels();
+					runOnUiThread(() -> Toast.makeText(this, R.string.shutdown_canceled, Toast.LENGTH_SHORT).show());
+				}
                 else
                     i2pdStop();
             }
@@ -374,8 +372,19 @@ public class I2PDActivity extends Activity {
 		return gracefulQuitTimer;
 	}
 
-	private static void setGracefulQuitTimer(Timer gracefulQuitTimer) {
+	private void setGracefulQuitTimer(Timer gracefulQuitTimer) {
 		I2PDActivity.gracefulQuitTimer = gracefulQuitTimer;
+		runOnUiThread(()-> {
+			Menu menu = optionsMenu;
+			if (menu != null) {
+				MenuItem item = menu.findItem(R.id.action_graceful_stop);
+				if (item != null) {
+					synchronized (graceStartedMillis_LOCK) {
+						item.setTitle(getGracefulQuitTimer() != null ? R.string.action_cancel_graceful_stop : R.string.action_graceful_stop);
+					}
+				}
+			}
+		});
 	}
 
 	/**
@@ -398,20 +407,22 @@ public class I2PDActivity extends Activity {
 			// to a file. That doesn't appear to be the case. If the returned array is
 			// null or has 0 length, we assume the path is to a file. This means empty
 			// directories will get turned into files.
-			if (contents == null || contents.length == 0)
-			throw new IOException();
+			if (contents == null || contents.length == 0) {
+				copyFileAsset(path);
+				return;
+			}
 
 			// Make the directory.
 			File dir = new File(i2pdpath, path);
-			Log.d(TAG, "dir.mkdirs() returned "+dir.mkdirs());
+			boolean result = dir.mkdirs();
+			Log.d(TAG, "dir.mkdirs() returned " + result);
 
 			// Recurse on the contents.
 			for (String entry : contents) {
-				copyAsset(path + "/" + entry);
+				copyAsset(path + '/' + entry);
 			}
 		} catch (IOException e) {
-			Log.e(TAG,"ex ignored", e);
-			copyFileAsset(path);
+			Log.e(TAG, "ex ignored for path='" + path + "'", e);
 		}
 	}
 
@@ -424,21 +435,23 @@ public class I2PDActivity extends Activity {
 	*/
 	private void copyFileAsset(String path) {
 		File file = new File(i2pdpath, path);
-		if(!file.exists()) try {
-			InputStream in = getAssets().open(path);
-			OutputStream out = new FileOutputStream(file);
+		if(!file.exists()) {
+			try {
+				try (InputStream in = getAssets().open(path) ) {
+					try (OutputStream out = new FileOutputStream(file)) {
 						byte[] buffer = new byte[1024];
 						int read = in.read(buffer);
 						while (read != -1) {
 							out.write(buffer, 0, read);
 							read = in.read(buffer);
 						}
-			out.close();
-			in.close();
+					}
+				}
 			} catch (IOException e) {
 				Log.e(TAG, "", e);
 			}
 		}
+	}
 
 	private void deleteRecursive(File fileOrDirectory) {
 		if (fileOrDirectory.isDirectory()) {