kshalle@2: package com.example.musicplayer;
kshalle@2: 
kshalle@2: import com.example.musicplayer.util.SystemUiHider;
kshalle@2: 
kshalle@2: import android.annotation.TargetApi;
kshalle@2: import android.app.Activity;
kshalle@2: import android.os.Build;
kshalle@2: import android.os.Bundle;
kshalle@2: import android.os.Handler;
kshalle@2: import android.view.MotionEvent;
kshalle@2: import android.view.View;
kshalle@2: 
kshalle@2: 
kshalle@2: /**
kshalle@2:  * An example full-screen activity that shows and hides the system UI (i.e.
kshalle@2:  * status bar and navigation/system bar) with user interaction.
kshalle@2:  *
kshalle@2:  * @see SystemUiHider
kshalle@2:  */
kshalle@2: public class MainActivity extends Activity {
kshalle@2:     /**
kshalle@2:      * Whether or not the system UI should be auto-hidden after
kshalle@2:      * {@link #AUTO_HIDE_DELAY_MILLIS} milliseconds.
kshalle@2:      */
kshalle@2:     private static final boolean AUTO_HIDE = true;
kshalle@2: 
kshalle@2:     /**
kshalle@2:      * If {@link #AUTO_HIDE} is set, the number of milliseconds to wait after
kshalle@2:      * user interaction before hiding the system UI.
kshalle@2:      */
kshalle@2:     private static final int AUTO_HIDE_DELAY_MILLIS = 3000;
kshalle@2: 
kshalle@2:     /**
kshalle@2:      * If set, will toggle the system UI visibility upon interaction. Otherwise,
kshalle@2:      * will show the system UI visibility upon interaction.
kshalle@2:      */
kshalle@2:     private static final boolean TOGGLE_ON_CLICK = true;
kshalle@2: 
kshalle@2:     /**
kshalle@2:      * The flags to pass to {@link SystemUiHider#getInstance}.
kshalle@2:      */
kshalle@2:     private static final int HIDER_FLAGS = SystemUiHider.FLAG_HIDE_NAVIGATION;
kshalle@2: 
kshalle@2:     /**
kshalle@2:      * The instance of the {@link SystemUiHider} for this activity.
kshalle@2:      */
kshalle@2:     private SystemUiHider mSystemUiHider;
kshalle@2: 
kshalle@2:     @Override
kshalle@2:     protected void onCreate(Bundle savedInstanceState) {
kshalle@2:         super.onCreate(savedInstanceState);
kshalle@2: 
kshalle@2:         setContentView(R.layout.activity_main);
kshalle@2: 
kshalle@2:         final View controlsView = findViewById(R.id.fullscreen_content_controls);
kshalle@2:         final View contentView = findViewById(R.id.fullscreen_content);
kshalle@2: 
kshalle@2:         // Set up an instance of SystemUiHider to control the system UI for
kshalle@2:         // this activity.
kshalle@2:         mSystemUiHider = SystemUiHider.getInstance(this, contentView, HIDER_FLAGS);
kshalle@2:         mSystemUiHider.setup();
kshalle@2:         mSystemUiHider
kshalle@2:                 .setOnVisibilityChangeListener(new SystemUiHider.OnVisibilityChangeListener() {
kshalle@2:                     // Cached values.
kshalle@2:                     int mControlsHeight;
kshalle@2:                     int mShortAnimTime;
kshalle@2: 
kshalle@2:                     @Override
kshalle@2:                     @TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
kshalle@2:                     public void onVisibilityChange(boolean visible) {
kshalle@2:                         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
kshalle@2:                             // If the ViewPropertyAnimator API is available
kshalle@2:                             // (Honeycomb MR2 and later), use it to animate the
kshalle@2:                             // in-layout UI controls at the bottom of the
kshalle@2:                             // screen.
kshalle@2:                             if (mControlsHeight == 0) {
kshalle@2:                                 mControlsHeight = controlsView.getHeight();
kshalle@2:                             }
kshalle@2:                             if (mShortAnimTime == 0) {
kshalle@2:                                 mShortAnimTime = getResources().getInteger(
kshalle@2:                                         android.R.integer.config_shortAnimTime);
kshalle@2:                             }
kshalle@2:                             controlsView.animate()
kshalle@2:                                     .translationY(visible ? 0 : mControlsHeight)
kshalle@2:                                     .setDuration(mShortAnimTime);
kshalle@2:                         } else {
kshalle@2:                             // If the ViewPropertyAnimator APIs aren't
kshalle@2:                             // available, simply show or hide the in-layout UI
kshalle@2:                             // controls.
kshalle@2:                             controlsView.setVisibility(visible ? View.VISIBLE : View.GONE);
kshalle@2:                         }
kshalle@2: 
kshalle@2:                         if (visible && AUTO_HIDE) {
kshalle@2:                             // Schedule a hide().
kshalle@2:                             delayedHide(AUTO_HIDE_DELAY_MILLIS);
kshalle@2:                         }
kshalle@2:                     }
kshalle@2:                 });
kshalle@2: 
kshalle@2:         // Set up the user interaction to manually show or hide the system UI.
kshalle@2:         contentView.setOnClickListener(new View.OnClickListener() {
kshalle@2:             @Override
kshalle@2:             public void onClick(View view) {
kshalle@2:                 if (TOGGLE_ON_CLICK) {
kshalle@2:                     mSystemUiHider.toggle();
kshalle@2:                 } else {
kshalle@2:                     mSystemUiHider.show();
kshalle@2:                 }
kshalle@2:             }
kshalle@2:         });
kshalle@2: 
kshalle@2:         // Upon interacting with UI controls, delay any scheduled hide()
kshalle@2:         // operations to prevent the jarring behavior of controls going away
kshalle@2:         // while interacting with the UI.
kshalle@2:         findViewById(R.id.dummy_button).setOnTouchListener(mDelayHideTouchListener);
kshalle@2:     }
kshalle@2: 
kshalle@2:     @Override
kshalle@2:     protected void onPostCreate(Bundle savedInstanceState) {
kshalle@2:         super.onPostCreate(savedInstanceState);
kshalle@2: 
kshalle@2:         // Trigger the initial hide() shortly after the activity has been
kshalle@2:         // created, to briefly hint to the user that UI controls
kshalle@2:         // are available.
kshalle@2:         delayedHide(100);
kshalle@2:     }
kshalle@2: 
kshalle@2: 
kshalle@2:     /**
kshalle@2:      * Touch listener to use for in-layout UI controls to delay hiding the
kshalle@2:      * system UI. This is to prevent the jarring behavior of controls going away
kshalle@2:      * while interacting with activity UI.
kshalle@2:      */
kshalle@2:     View.OnTouchListener mDelayHideTouchListener = new View.OnTouchListener() {
kshalle@2:         @Override
kshalle@2:         public boolean onTouch(View view, MotionEvent motionEvent) {
kshalle@2:             if (AUTO_HIDE) {
kshalle@2:                 delayedHide(AUTO_HIDE_DELAY_MILLIS);
kshalle@2:             }
kshalle@2:             return false;
kshalle@2:         }
kshalle@2:     };
kshalle@2: 
kshalle@2:     Handler mHideHandler = new Handler();
kshalle@2:     Runnable mHideRunnable = new Runnable() {
kshalle@2:         @Override
kshalle@2:         public void run() {
kshalle@2:             mSystemUiHider.hide();
kshalle@2:         }
kshalle@2:     };
kshalle@2: 
kshalle@2:     /**
kshalle@2:      * Schedules a call to hide() in [delay] milliseconds, canceling any
kshalle@2:      * previously scheduled calls.
kshalle@2:      */
kshalle@2:     private void delayedHide(int delayMillis) {
kshalle@2:         mHideHandler.removeCallbacks(mHideRunnable);
kshalle@2:         mHideHandler.postDelayed(mHideRunnable, delayMillis);
kshalle@2:     }
kshalle@2: }