Make fullscreen less flickery

app/src/main/java/com/rubenvandeven/emotionhero/GamingActivity.java

@@ -18,6 +18,7 @@ import android.view.MotionEvent;
 import android.view.SurfaceView;
 import android.view.View;
 import android.view.ViewGroup;
+import android.view.WindowManager;
 import android.widget.Button;
 import android.widget.RelativeLayout;
 import android.widget.TextView;
@@ -41,60 +42,7 @@ public class GamingActivity extends AppCompatActivity implements Detector.ImageL
 
     final int PERMISSIONS_REQUEST_CAMERA = 1;
 
-    /**
-     * Whether or not the system UI should be auto-hidden after
-     * {@link #AUTO_HIDE_DELAY_MILLIS} milliseconds.
-     */
-    private static final boolean AUTO_HIDE = true;
-
-    /**
-     * If {@link #AUTO_HIDE} is set, the number of milliseconds to wait after
-     * user interaction before hiding the system UI.
-     */
-    private static final int AUTO_HIDE_DELAY_MILLIS = 3000;
-
-    /**
-     * Some older devices needs a small delay between UI widget updates
-     * and a change of the status and navigation bar.
-     */
-    private static final int UI_ANIMATION_DELAY = 300;
-    private final Handler mHideHandler = new Handler();
     private TextView mContentView;
-    private final Runnable mHidePart2Runnable = new Runnable() {
-        @SuppressLint("InlinedApi")
-        @Override
-        public void run() {
-            // Delayed removal of status and navigation bar
-
-            // Note that some of these constants are new as of API 16 (Jelly Bean)
-            // and API 19 (KitKat). It is safe to use them, as they are inlined
-            // at compile-time and do nothing on earlier devices.
-            mContentView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE
-                    | View.SYSTEM_UI_FLAG_FULLSCREEN
-                    | View.SYSTEM_UI_FLAG_LAYOUT_STABLE
-                    | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
-                    | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
-                    | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);
-        }
-    };
-
-    private final Runnable mShowPart2Runnable = new Runnable() {
-        @Override
-        public void run() {
-            // Delayed display of UI elements
-            ActionBar actionBar = getSupportActionBar();
-            if (actionBar != null) {
-                actionBar.show();
-            }
-        }
-    };
-    private boolean mVisible;
-    private final Runnable mHideRunnable = new Runnable() {
-        @Override
-        public void run() {
-            hide();
-        }
-    };
 
     private CameraDetector detector;
 
@@ -119,10 +67,11 @@ public class GamingActivity extends AppCompatActivity implements Detector.ImageL
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
+        getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
+        getSupportActionBar().hide();
 
         setContentView(R.layout.activity_gaming);
 
-        mVisible = true;
         mContentView = (TextView) findViewById(R.id.fullscreen_content);
         RelativeLayout videoLayout = (RelativeLayout) findViewById(R.id.video_layout);
 
@@ -140,7 +89,7 @@ public class GamingActivity extends AppCompatActivity implements Detector.ImageL
         mContentView.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View view) {
-                toggle();
+//                toggle();
             }
         });
 
@@ -190,24 +139,6 @@ public class GamingActivity extends AppCompatActivity implements Detector.ImageL
 
     }
 
-    @Override
-    protected void onPostCreate(Bundle savedInstanceState) {
-        super.onPostCreate(savedInstanceState);
-
-        // Trigger the initial hide() shortly after the activity has been
-        // created, to briefly hint to the user that UI controls
-        // are available.
-        delayedHide(100);
-    }
-
-    private void toggle() {
-        if (mVisible) {
-            hide();
-        } else {
-            show();
-        }
-    }
-
     @Override
     protected void onResume() {
         super.onResume();
@@ -270,40 +201,6 @@ public class GamingActivity extends AppCompatActivity implements Detector.ImageL
         }
     }
 
-    private void hide() {
-        // Hide UI first
-        ActionBar actionBar = getSupportActionBar();
-        if (actionBar != null) {
-            actionBar.hide();
-        }
-        mVisible = false;
-
-        // Schedule a runnable to remove the status and navigation bar after a delay
-        mHideHandler.removeCallbacks(mShowPart2Runnable);
-        mHideHandler.postDelayed(mHidePart2Runnable, UI_ANIMATION_DELAY);
-    }
-
-    @SuppressLint("InlinedApi")
-    private void show() {
-        // Show the system bar
-        mContentView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
-                | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);
-        mVisible = true;
-
-        // Schedule a runnable to display UI elements after a delay
-        mHideHandler.removeCallbacks(mHidePart2Runnable);
-        mHideHandler.postDelayed(mShowPart2Runnable, UI_ANIMATION_DELAY);
-    }
-
-    /**
-     * Schedules a call to hide() in [delay] milliseconds, canceling any
-     * previously scheduled calls.
-     */
-    private void delayedHide(int delayMillis) {
-        mHideHandler.removeCallbacks(mHideRunnable);
-        mHideHandler.postDelayed(mHideRunnable, delayMillis);
-    }
-
     @Override
     /**
      * Detector callback gives the faces found so we can match their scores to the given scenario.