Use --pause-on-exit from launchers

The terminal opened by scrcpy-console (.bat or .desktop) must not close
if scrcpy terminates with an error, so that error messages can be read.

Refs #3817 <https://github.com/Genymobile/scrcpy/pull/3817>
Refs #3822 <https://github.com/Genymobile/scrcpy/pull/3822>
PR #4130 <https://github.com/Genymobile/scrcpy/pull/4130>

app/data/bash-completion/scrcpy

@@ -44,6 +44,8 @@ _scrcpy() {
         --no-video-playback
         --otg
         -p --port=
+        --pause-on-exit
+        --pause-on-exit=
         --power-off-on-close
         --prefer-text
         --print-fps
@@ -97,6 +99,10 @@ _scrcpy() {
             COMPREPLY=($(compgen -W 'unlocked initial 0 1 2 3' -- "$cur"))
             return
             ;;
+        --pause-on-exit)
+            COMPREPLY=($(compgen -W 'true false if-error' -- "$cur"))
+            return
+            ;;
         -r|--record)
             COMPREPLY=($(compgen -f -- "$cur"))
             return

app/data/scrcpy-console.bat

@@ -1,4 +1,2 @@
 @echo off
-scrcpy.exe %*
+scrcpy.exe --pause-on-exit=if-error %*
-:: if the exit code is >= 1, then pause
-if errorlevel 1 pause

app/data/scrcpy-console.desktop

@@ -5,7 +5,7 @@ Comment=Display and control your Android device
 # For some users, the PATH or ADB environment variables are set from the shell
 # startup file, like .bashrc or .zshrc… Run an interactive shell to get
 # environment correctly initialized.
-Exec=/bin/bash --norc --noprofile -i -c "\"\\$SHELL\" -i -c scrcpy || read -p 'Press Enter to quit...'"
+Exec=/bin/sh -c "\"\\$SHELL\" -i -c scrcpy --pause-on-exit=if-error"
 Icon=scrcpy
 Terminal=true
 Type=Application

app/data/zsh-completion/_scrcpy

@@ -50,6 +50,7 @@ arguments=(
     '--no-video-playback[Disable video playback]'
     '--otg[Run in OTG mode \(simulating physical keyboard and mouse\)]'
     {-p,--port=}'[\[port\[\:port\]\] Set the TCP port \(range\) used by the client to listen]'
+    '--pause-on-exit=[Make scrcpy pause before exiting]:mode:(true false if-error)'
     '--power-off-on-close[Turn the device screen off when closing scrcpy]'
     '--prefer-text[Inject alpha characters and space as text events instead of key events]'
     '--print-fps[Start FPS counter, to print frame logs to the console]'

app/scrcpy.1

@@ -267,6 +267,16 @@ Set the TCP port (range) used by the client to listen.
 
 Default is 27183:27199.
 
+.TP
+\fB\-\-pause\-on\-exit\fR[=\fImode\fR]
+Configure pause on exit. Possible values are "true" (always pause on exit), "false" (never pause on exit) and "if-error" (pause only if an error occured).
+
+This is useful to prevent the terminal window from automatically closing, so that error messages can be read.
+
+Default is "false".
+
+Passing the option without argument is equivalent to passing "true".
+
 .TP
 .B \-\-power\-off\-on\-close
 Turn the device screen off when closing scrcpy.

app/src/cli.c

@@ -79,6 +79,7 @@ enum {
     OPT_AUDIO_SOURCE,
     OPT_KILL_ADB_ON_CLOSE,
     OPT_TIME_LIMIT,
+    OPT_PAUSE_ON_EXIT,
 };
 
 struct sc_option {
@@ -463,6 +464,20 @@ static const struct sc_option options[] = {
                 "Default is " STR(DEFAULT_LOCAL_PORT_RANGE_FIRST) ":"
                               STR(DEFAULT_LOCAL_PORT_RANGE_LAST) ".",
     },
+    {
+        .longopt_id = OPT_PAUSE_ON_EXIT,
+        .longopt = "pause-on-exit",
+        .argdesc = "mode",
+        .optional_arg = true,
+        .text = "Configure pause on exit. Possible values are \"true\" (always "
+                "pause on exit), \"false\" (never pause on exit) and "
+                "\"if-error\" (pause only if an error occured).\n"
+                "This is useful to prevent the terminal window from "
+                "automatically closing, so that error messages can be read.\n"
+                "Default is \"false\".\n"
+                "Passing the option without argument is equivalent to passing "
+                "\"true\".",
+    },
     {
         .longopt_id = OPT_POWER_OFF_ON_CLOSE,
         .longopt = "power-off-on-close",
@@ -1637,6 +1652,29 @@ parse_time_limit(const char *s, sc_tick *tick) {
     return true;
 }
 
+static bool
+parse_pause_on_exit(const char *s, enum sc_pause_on_exit *pause_on_exit) {
+    if (!s || !strcmp(s, "true")) {
+        *pause_on_exit = SC_PAUSE_ON_EXIT_TRUE;
+        return true;
+    }
+
+    if (!strcmp(s, "false")) {
+        *pause_on_exit = SC_PAUSE_ON_EXIT_FALSE;
+        return true;
+    }
+
+    if (!strcmp(s, "if-error")) {
+        *pause_on_exit = SC_PAUSE_ON_EXIT_IF_ERROR;
+        return true;
+    }
+
+    LOGE("Unsupported pause on exit mode: %s "
+         "(expected true, false or if-error)", optarg);
+    return false;
+
+}
+
 static bool
 parse_args_with_getopt(struct scrcpy_cli_args *args, int argc, char *argv[],
                        const char *optstring, const struct option *longopts) {
@@ -1977,6 +2015,11 @@ parse_args_with_getopt(struct scrcpy_cli_args *args, int argc, char *argv[],
                     return false;
                 }
                 break;
+            case OPT_PAUSE_ON_EXIT:
+                if (!parse_pause_on_exit(optarg, &args->pause_on_exit)) {
+                    return false;
+                }
+                break;
             default:
                 // getopt prints the error message on stderr
                 return false;
@@ -2190,6 +2233,37 @@ parse_args_with_getopt(struct scrcpy_cli_args *args, int argc, char *argv[],
     return true;
 }
 
+static enum sc_pause_on_exit
+sc_get_pause_on_exit(int argc, char *argv[]) {
+    // Read arguments backwards so that the last --pause-on-exit is considered
+    // (same behavior as getopt())
+    for (int i = argc - 1; i >= 1; --i) {
+        const char *arg = argv[i];
+        // Starts with "--pause-on-exit"
+        if (!strncmp("--pause-on-exit", arg, 15)) {
+            if (arg[15] == '\0') {
+                // No argument
+                return SC_PAUSE_ON_EXIT_TRUE;
+            }
+            if (arg[15] != '=') {
+                // Invalid parameter, ignore
+                return SC_PAUSE_ON_EXIT_FALSE;
+            }
+            const char *value = &arg[16];
+            if (!strcmp(value, "true")) {
+                return SC_PAUSE_ON_EXIT_TRUE;
+            }
+            if (!strcmp(value, "if-error")) {
+                return SC_PAUSE_ON_EXIT_IF_ERROR;
+            }
+            // Set to false, inclusing when the value is invalid
+            return SC_PAUSE_ON_EXIT_FALSE;
+        }
+    }
+
+    return false;
+}
+
 bool
 scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
     struct sc_getopt_adapter adapter;
@@ -2203,5 +2277,11 @@ scrcpy_parse_args(struct scrcpy_cli_args *args, int argc, char *argv[]) {
 
     sc_getopt_adapter_destroy(&adapter);
 
+    if (!ret && args->pause_on_exit == SC_PAUSE_ON_EXIT_FALSE) {
+        // Check if "--pause-on-exit" is present in the arguments list, because
+        // it must be taken into account even if command line parsing failed
+        args->pause_on_exit = sc_get_pause_on_exit(argc, argv);
+    }
+
     return ret;
 }

app/src/cli.h

@@ -7,10 +7,17 @@
 
 #include "options.h"
 
+enum sc_pause_on_exit {
+    SC_PAUSE_ON_EXIT_TRUE,
+    SC_PAUSE_ON_EXIT_FALSE,
+    SC_PAUSE_ON_EXIT_IF_ERROR,
+};
+
 struct scrcpy_cli_args {
     struct scrcpy_options opts;
     bool help;
     bool version;
+    enum sc_pause_on_exit pause_on_exit;
 };
 
 void

app/src/main.c

@@ -39,26 +39,32 @@ main_scrcpy(int argc, char *argv[]) {
         .opts = scrcpy_options_default,
         .help = false,
         .version = false,
+        .pause_on_exit = SC_PAUSE_ON_EXIT_FALSE,
     };
 
 #ifndef NDEBUG
     args.opts.log_level = SC_LOG_LEVEL_DEBUG;
 #endif
 
+    enum scrcpy_exit_code ret;
+
     if (!scrcpy_parse_args(&args, argc, argv)) {
-        return SCRCPY_EXIT_FAILURE;
+        ret = SCRCPY_EXIT_FAILURE;
+        goto end;
     }
 
     sc_set_log_level(args.opts.log_level);
 
     if (args.help) {
         scrcpy_print_usage(argv[0]);
-        return SCRCPY_EXIT_SUCCESS;
+        ret = SCRCPY_EXIT_SUCCESS;
+        goto end;
     }
 
     if (args.version) {
         scrcpy_print_version();
-        return SCRCPY_EXIT_SUCCESS;
+        ret = SCRCPY_EXIT_SUCCESS;
+        goto end;
     }
 
 #ifdef SCRCPY_LAVF_REQUIRES_REGISTER_ALL
@@ -72,18 +78,26 @@ main_scrcpy(int argc, char *argv[]) {
 #endif
 
     if (!net_init()) {
-        return SCRCPY_EXIT_FAILURE;
+        ret = SCRCPY_EXIT_FAILURE;
+        goto end;
     }
 
     sc_log_configure();
 
 #ifdef HAVE_USB
-    enum scrcpy_exit_code ret = args.opts.otg ? scrcpy_otg(&args.opts)
+    ret = args.opts.otg ? scrcpy_otg(&args.opts) : scrcpy(&args.opts);
-                                              : scrcpy(&args.opts);
 #else
-    enum scrcpy_exit_code ret = scrcpy(&args.opts);
+    ret = scrcpy(&args.opts);
 #endif
 
+end:
+    if (args.pause_on_exit == SC_PAUSE_ON_EXIT_TRUE ||
+            (args.pause_on_exit == SC_PAUSE_ON_EXIT_IF_ERROR &&
+                ret != SCRCPY_EXIT_SUCCESS)) {
+        printf("Press Enter to continue...\n");
+        getchar();
+    }
+
     return ret;
 }
 

server/src/main/java/com/genymobile/scrcpy/ScreenCapture.java

@@ -1,83 +0,0 @@
-package com.genymobile.scrcpy;
-
-import com.genymobile.scrcpy.wrappers.SurfaceControl;
-
-import android.graphics.Rect;
-import android.os.Build;
-import android.os.IBinder;
-import android.view.Surface;
-
-public class ScreenCapture extends SurfaceCapture implements Device.RotationListener, Device.FoldListener {
-
-    private final Device device;
-    private IBinder display;
-
-    public ScreenCapture(Device device) {
-        this.device = device;
-    }
-
-    @Override
-    public void init() {
-        display = createDisplay();
-        device.setRotationListener(this);
-        device.setFoldListener(this);
-    }
-
-    @Override
-    public void release() {
-        device.setRotationListener(null);
-        device.setFoldListener(null);
-        SurfaceControl.destroyDisplay(display);
-    }
-
-    @Override
-    public Size getSize() {
-        return device.getScreenInfo().getVideoSize();
-    }
-
-    @Override
-    public void setMaxSize(int size) {
-        device.setMaxSize(size);
-    }
-
-    @Override
-    public void setSurface(Surface surface) {
-        ScreenInfo screenInfo = device.getScreenInfo();
-        Rect contentRect = screenInfo.getContentRect();
-
-        // does not include the locked video orientation
-        Rect unlockedVideoRect = screenInfo.getUnlockedVideoSize().toRect();
-        int videoRotation = screenInfo.getVideoRotation();
-        int layerStack = device.getLayerStack();
-        setDisplaySurface(display, surface, videoRotation, contentRect, unlockedVideoRect, layerStack);
-    }
-
-    @Override
-    public void onFoldChanged(int displayId, boolean folded) {
-        requestReset();
-    }
-
-    @Override
-    public void onRotationChanged(int rotation) {
-        requestReset();
-    }
-
-    private static IBinder createDisplay() {
-        // Since Android 12 (preview), secure displays could not be created with shell permissions anymore.
-        // On Android 12 preview, SDK_INT is still R (not S), but CODENAME is "S".
-        boolean secure = Build.VERSION.SDK_INT < Build.VERSION_CODES.R || (Build.VERSION.SDK_INT == Build.VERSION_CODES.R && !"S".equals(
-                Build.VERSION.CODENAME));
-        return SurfaceControl.createDisplay("scrcpy", secure);
-    }
-
-    private static void setDisplaySurface(IBinder display, Surface surface, int orientation, Rect deviceRect, Rect displayRect, int layerStack) {
-        SurfaceControl.openTransaction();
-        try {
-            SurfaceControl.setDisplaySurface(display, surface);
-            SurfaceControl.setDisplayProjection(display, orientation, deviceRect, displayRect);
-            SurfaceControl.setDisplayLayerStack(display, layerStack);
-        } finally {
-            SurfaceControl.closeTransaction();
-        }
-    }
-}

server/src/main/java/com/genymobile/scrcpy/ScreenEncoder.java

@@ -17,7 +17,7 @@ import java.nio.ByteBuffer;
 import java.util.List;
 import java.util.concurrent.atomic.AtomicBoolean;
 
-public class SurfaceEncoder implements AsyncProcessor {
+public class ScreenEncoder implements Device.RotationListener, Device.FoldListener, AsyncProcessor {
 
     private static final int DEFAULT_I_FRAME_INTERVAL = 10; // seconds
     private static final int REPEAT_FRAME_DELAY_US = 100_000; // repeat after 100ms
@@ -27,7 +27,9 @@ public class SurfaceEncoder implements AsyncProcessor {
     private static final int[] MAX_SIZE_FALLBACK = {2560, 1920, 1600, 1280, 1024, 800};
     private static final int MAX_CONSECUTIVE_ERRORS = 3;
 
-    private final SurfaceCapture capture;
+    private final AtomicBoolean resetCapture = new AtomicBoolean();
+
+    private final Device device;
     private final Streamer streamer;
     private final String encoderName;
     private final List<CodecOption> codecOptions;
@@ -41,9 +43,9 @@ public class SurfaceEncoder implements AsyncProcessor {
     private Thread thread;
     private final AtomicBoolean stopped = new AtomicBoolean();
 
-    public SurfaceEncoder(SurfaceCapture capture, Streamer streamer, int videoBitRate, int maxFps, List<CodecOption> codecOptions, String encoderName,
+    public ScreenEncoder(Device device, Streamer streamer, int videoBitRate, int maxFps, List<CodecOption> codecOptions, String encoderName,
             boolean downsizeOnError) {
-        this.capture = capture;
+        this.device = device;
         this.streamer = streamer;
         this.videoBitRate = videoBitRate;
         this.maxFps = maxFps;
@@ -52,29 +54,51 @@ public class SurfaceEncoder implements AsyncProcessor {
         this.downsizeOnError = downsizeOnError;
     }
 
+    @Override
+    public void onFoldChanged(int displayId, boolean folded) {
+        resetCapture.set(true);
+    }
+
+    @Override
+    public void onRotationChanged(int rotation) {
+        resetCapture.set(true);
+    }
+
+    private boolean consumeResetCapture() {
+        return resetCapture.getAndSet(false);
+    }
+
     private void streamScreen() throws IOException, ConfigurationException {
         Codec codec = streamer.getCodec();
         MediaCodec mediaCodec = createMediaCodec(codec, encoderName);
         MediaFormat format = createFormat(codec.getMimeType(), videoBitRate, maxFps, codecOptions);
+        IBinder display = createDisplay();
+        device.setRotationListener(this);
+        device.setFoldListener(this);
 
-        capture.init();
+        streamer.writeVideoHeader(device.getScreenInfo().getVideoSize());
-
-        try {
-            streamer.writeVideoHeader(capture.getSize());
 
         boolean alive;
-
+        try {
             do {
-                Size size = capture.getSize();
+                ScreenInfo screenInfo = device.getScreenInfo();
-                format.setInteger(MediaFormat.KEY_WIDTH, size.getWidth());
+                Rect contentRect = screenInfo.getContentRect();
-                format.setInteger(MediaFormat.KEY_HEIGHT, size.getHeight());
+
+                // include the locked video orientation
+                Rect videoRect = screenInfo.getVideoSize().toRect();
+                format.setInteger(MediaFormat.KEY_WIDTH, videoRect.width());
+                format.setInteger(MediaFormat.KEY_HEIGHT, videoRect.height());
 
                 Surface surface = null;
                 try {
                     mediaCodec.configure(format, null, null, MediaCodec.CONFIGURE_FLAG_ENCODE);
                     surface = mediaCodec.createInputSurface();
 
-                    capture.setSurface(surface);
+                    // does not include the locked video orientation
+                    Rect unlockedVideoRect = screenInfo.getUnlockedVideoSize().toRect();
+                    int videoRotation = screenInfo.getVideoRotation();
+                    int layerStack = device.getLayerStack();
+                    setDisplaySurface(display, surface, videoRotation, contentRect, unlockedVideoRect, layerStack);
 
                     mediaCodec.start();
 
@@ -83,7 +107,7 @@ public class SurfaceEncoder implements AsyncProcessor {
                     mediaCodec.stop();
                 } catch (IllegalStateException | IllegalArgumentException e) {
                     Ln.e("Encoding error: " + e.getClass().getName() + ": " + e.getMessage());
-                    if (!prepareRetry(size)) {
+                    if (!prepareRetry(device, screenInfo)) {
                         throw e;
                     }
                     Ln.i("Retrying...");
@@ -97,11 +121,13 @@ public class SurfaceEncoder implements AsyncProcessor {
             } while (alive);
         } finally {
             mediaCodec.release();
-            capture.release();
+            device.setRotationListener(null);
+            device.setFoldListener(null);
+            SurfaceControl.destroyDisplay(display);
         }
     }
 
-    private boolean prepareRetry(Size currentSize) {
+    private boolean prepareRetry(Device device, ScreenInfo screenInfo) {
         if (firstFrameSent) {
             ++consecutiveErrors;
             if (consecutiveErrors >= MAX_CONSECUTIVE_ERRORS) {
@@ -121,7 +147,7 @@ public class SurfaceEncoder implements AsyncProcessor {
 
         // Downsizing on error is only enabled if an encoding failure occurs before the first frame (downsizing later could be surprising)
 
-        int newMaxSize = chooseMaxSizeFallback(currentSize);
+        int newMaxSize = chooseMaxSizeFallback(screenInfo.getVideoSize());
         if (newMaxSize == 0) {
             // Must definitively fail
             return false;
@@ -129,7 +155,7 @@ public class SurfaceEncoder implements AsyncProcessor {
 
         // Retry with a smaller device size
         Ln.i("Retrying with -m" + newMaxSize + "...");
-        capture.setMaxSize(newMaxSize);
+        device.setMaxSize(newMaxSize);
         return true;
     }
 
@@ -150,14 +176,14 @@ public class SurfaceEncoder implements AsyncProcessor {
         boolean alive = true;
         MediaCodec.BufferInfo bufferInfo = new MediaCodec.BufferInfo();
 
-        while (!capture.consumeReset() && !eof) {
+        while (!consumeResetCapture() && !eof) {
             if (stopped.get()) {
                 alive = false;
                 break;
             }
             int outputBufferId = codec.dequeueOutputBuffer(bufferInfo, -1);
             try {
-                if (capture.consumeReset()) {
+                if (consumeResetCapture()) {
                     // must restart encoding with new size
                     break;
                 }
@@ -241,8 +267,8 @@ public class SurfaceEncoder implements AsyncProcessor {
     private static IBinder createDisplay() {
         // Since Android 12 (preview), secure displays could not be created with shell permissions anymore.
         // On Android 12 preview, SDK_INT is still R (not S), but CODENAME is "S".
-        boolean secure = Build.VERSION.SDK_INT < Build.VERSION_CODES.R || (Build.VERSION.SDK_INT == Build.VERSION_CODES.R && !"S".equals(
+        boolean secure = Build.VERSION.SDK_INT < Build.VERSION_CODES.R || (Build.VERSION.SDK_INT == Build.VERSION_CODES.R && !"S"
-                Build.VERSION.CODENAME));
+                .equals(Build.VERSION.CODENAME));
         return SurfaceControl.createDisplay("scrcpy", secure);
     }
 

server/src/main/java/com/genymobile/scrcpy/Server.java

@@ -132,8 +132,7 @@ public final class Server {
             if (video) {
                 Streamer videoStreamer = new Streamer(connection.getVideoFd(), options.getVideoCodec(), options.getSendCodecMeta(),
                         options.getSendFrameMeta());
-                ScreenCapture screenCapture = new ScreenCapture(device);
+                ScreenEncoder screenEncoder = new ScreenEncoder(device, videoStreamer, options.getVideoBitRate(), options.getMaxFps(),
-                SurfaceEncoder screenEncoder = new SurfaceEncoder(screenCapture, videoStreamer, options.getVideoBitRate(), options.getMaxFps(),
                         options.getVideoCodecOptions(), options.getVideoEncoder(), options.getDownsizeOnError());
                 asyncProcessors.add(screenEncoder);
             }

server/src/main/java/com/genymobile/scrcpy/SurfaceCapture.java

@@ -1,61 +0,0 @@
-package com.genymobile.scrcpy;
-
-import android.view.Surface;
-
-import java.util.concurrent.atomic.AtomicBoolean;
-
-/**
- * A video source which can be rendered on a Surface for encoding.
- */
-public abstract class SurfaceCapture {
-
-    private final AtomicBoolean resetCapture = new AtomicBoolean();
-
-    /**
-     * Request the encoding session to be restarted, for example if the capture implementation detects that the video source size has changed (on
-     * device rotation for example).
-     */
-    protected void requestReset() {
-        resetCapture.set(true);
-    }
-
-    /**
-     * Consume the reset request (intended to be called by the encoder).
-     *
-     * @return {@code true} if a reset request was pending, {@code false} otherwise.
-     */
-    public boolean consumeReset() {
-        return resetCapture.getAndSet(false);
-    }
-
-    /**
-     * Called once before the capture starts.
-     */
-    public abstract void init();
-
-    /**
-     * Called after the capture ends (if and only if {@link #init()} has been called).
-     */
-    public abstract void release();
-
-    /**
-     * Return the video size
-     *
-     * @return the video size
-     */
-    public abstract Size getSize();
-
-    /**
-     * Set the maximum capture size (set by the encoder if it does not support the current size).
-     *
-     * @param size Maximum size
-     */
-    public abstract void setMaxSize(int size);
-
-    /**
-     * Set the target surface.
-     *
-     * @param surface the surface which will be encoded
-     */
-    public abstract void setSurface(Surface surface);
-}

server/src/main/java/com/genymobile/scrcpy/Workarounds.java

@@ -154,7 +154,7 @@ public final class Workarounds {
         }
     }
 
-    public static void fillBaseContext() {
+    private static void fillBaseContext() {
         try {
             fillActivityThread();
 

server/src/main/java/com/genymobile/scrcpy/wrappers/ActivityManager.java

@@ -17,7 +17,7 @@ import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 
 @SuppressLint("PrivateApi,DiscouragedPrivateApi")
-public class ActivityManager {
+public final class ActivityManager {
 
     private final IInterface manager;
     private Method getContentProviderExternalMethod;

server/src/main/java/com/genymobile/scrcpy/wrappers/ClipboardManager.java

@@ -11,7 +11,7 @@ import android.os.IInterface;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 
-public class ClipboardManager {
+public final class ClipboardManager {
     private final IInterface manager;
     private Method getPrimaryClipMethod;
     private Method setPrimaryClipMethod;

server/src/main/java/com/genymobile/scrcpy/wrappers/ContentProvider.java

@@ -14,7 +14,7 @@ import java.io.Closeable;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 
-public class ContentProvider implements Closeable {
+public final class ContentProvider implements Closeable {
 
     public static final String TABLE_SYSTEM = "system";
     public static final String TABLE_SECURE = "secure";

server/src/main/java/com/genymobile/scrcpy/wrappers/StatusBarManager.java

@@ -7,7 +7,7 @@ import android.os.IInterface;
 import java.lang.reflect.InvocationTargetException;
 import java.lang.reflect.Method;
 
-public class StatusBarManager {
+public final class StatusBarManager {
 
     private final IInterface manager;
     private Method expandNotificationsPanelMethod;