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      1 /*
      2  * Copyright (C) 2007 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.example.android.helloactivity;
     18 
     19 import android.app.Activity;
     20 import android.os.Bundle;
     21 import android.view.View;
     22 import android.view.WindowManager;
     23 
     24 
     25 /**
     26  * A minimal "Hello, World!" application.
     27  */
     28 public class HelloActivity extends Activity {
     29     /**
     30      * Called with the activity is first created.
     31      */
     32     @Override
     33     public void onCreate(Bundle savedInstanceState) {
     34         super.onCreate(savedInstanceState);
     35 
     36         // Set the layout for this activity.  You can find it
     37         // in res/layout/hello_activity.xml
     38         View view = getLayoutInflater().inflate(R.layout.hello_activity, null);
     39         setContentView(view);
     40 
     41         WindowManager.LayoutParams params = getWindow().getAttributes();
     42         params.systemUiVisibility = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
     43         getWindow().setAttributes(params);
     44         view.setOnSystemUiVisibilityChangeListener(new View.OnSystemUiVisibilityChangeListener() {
     45             @Override public void onSystemUiVisibilityChange(int visibility) {
     46                 WindowManager.LayoutParams params = getWindow().getAttributes();
     47                 params.systemUiVisibility = View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
     48                 getWindow().setAttributes(params);
     49             }
     50         });
     51     }
     52 }
     53 
     54