Continue from Tutorial 107

package com.notarazi.myfullscreen1;

import android.annotation.SuppressLint;

import android.support.v7.app.ActionBar;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.os.Handler;

import android.view.MotionEvent;

import android.view.View;

/**

* An example full-screen activity that shows and hides the system UI (i.e.

* status bar and navigation/system bar) with user interaction.

*/

public class FullscreenActivity extends AppCompatActivity {

   /**

    * 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 View 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 View mControlsView;

   private final Runnable mShowPart2Runnable = new Runnable() {

       @Override

       public void run() {

           // Delayed display of UI elements

           ActionBar actionBar = getSupportActionBar();

           if (actionBar != null) {

               actionBar.show();

           }

           mControlsView.setVisibility(View.VISIBLE);

       }

   };

   private boolean mVisible;

   private final Runnable mHideRunnable = new Runnable() {

       @Override

       public void run() {

           hide();

       }

   };

   /**

    * Touch listener to use for in-layout UI controls to delay hiding the

    * system UI. This is to prevent the jarring behavior of controls going away

    * while interacting with activity UI.

    */

   private final View.OnTouchListener mDelayHideTouchListener = new View.OnTouchListener() {

       @Override

       public boolean onTouch(View view, MotionEvent motionEvent) {

           if (AUTO_HIDE) {

               delayedHide(AUTO_HIDE_DELAY_MILLIS);

           }

           return false;

       }

   };

   @Override

   protected void onCreate(Bundle savedInstanceState) {

       super.onCreate(savedInstanceState);

       setContentView(R.layout.activity_fullscreen);

       mVisible = true;

       mControlsView = findViewById(R.id.fullscreen_content_controls);

       mContentView = findViewById(R.id.fullscreen_content);

       // Set up the user interaction to manually show or hide the system UI.

       mContentView.setOnClickListener(new View.OnClickListener() {

           @Override

           public void onClick(View view) {

               toggle();

           }

       });

       // Upon interacting with UI controls, delay any scheduled hide()

       // operations to prevent the jarring behavior of controls going away

       // while interacting with the UI.

       findViewById(R.id.dummy_button).setOnTouchListener(mDelayHideTouchListener);

   }

   @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();

       }

   }

   private void hide() {

       // Hide UI first

       ActionBar actionBar = getSupportActionBar();

       if (actionBar != null) {

           actionBar.hide();

       }

       mControlsView.setVisibility(View.GONE);

       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);

   }

}

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"

   xmlns:tools="http://schemas.android.com/tools"

   android:layout_width="match_parent"

   android:layout_height="match_parent"

   android:background="#0099cc"

   tools:context="com.notarazi.myfullscreen1.FullscreenActivity">

   <!-- The primary full-screen view. This can be replaced with whatever view

        is needed to present your content, e.g. VideoView, SurfaceView,

        TextureView, etc. -->

   <TextView

       android:id="@+id/fullscreen_content"

       android:layout_width="match_parent"

       android:layout_height="match_parent"

       android:gravity="center"

       android:keepScreenOn="true"

       android:text="@string/dummy_content"

       android:textColor="#33b5e5"

       android:textSize="50sp"

       android:textStyle="bold" />

   <!-- This FrameLayout insets its children based on system windows using

        android:fitsSystemWindows. -->

   <FrameLayout

       android:layout_width="match_parent"

       android:layout_height="match_parent"

       android:fitsSystemWindows="true">

       <LinearLayout

           android:id="@+id/fullscreen_content_controls"

           style="?metaButtonBarStyle"

           android:layout_width="match_parent"

           android:layout_height="wrap_content"

           android:layout_gravity="bottom|center_horizontal"

           android:background="@color/black_overlay"

           android:orientation="horizontal"

           tools:ignore="UselessParent">

           <Button

               android:id="@+id/dummy_button"

               style="?metaButtonBarButtonStyle"

               android:layout_width="0dp"

               android:layout_height="wrap_content"

               android:layout_weight="1"

               android:text="@string/dummy_button" />

       </LinearLayout>

   </FrameLayout>

</FrameLayout>