Please note that the contents of this offline web site may be out of date. To access the most recent documentation visit the online version .
Note that links that point to online resources are green in color and will open in a new window.
We would love it if you could give us feedback about this material by filling this form (You have to be online to fill it)
ImmersiveMode / src / com.example.android.immersivemode /

ImmersiveModeFragment.java

       
        1
       
       
        /*
       
       
        2
       
       
        * Copyright (C) 2012 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
       
       
        package com.example.android.immersivemode;
       
       
        17
       
       
       
       
        18
       
       
        import android.os.Build;
       
       
        19
       
       
        import android.os.Bundle;
       
       
        20
       
       
        import android.support.v4.app.Fragment;
       
       
        21
       
       
        import android.view.MenuItem;
       
       
        22
       
       
        import android.view.View;
       
       
        23
       
       
       
       
        24
       
       
        import com.example.android.common.logger.Log;
       
       
        25
       
       
       
       
        26
       
       
        public class ImmersiveModeFragment extends Fragment {
       
       
        27
       
       
       
       
        28
       
       
        public static final String TAG = "ImmersiveModeFragment";
       
       
        29
       
       
       
       
        30
       
       
        @Override
       
       
        31
       
       
        public void onCreate(Bundle savedInstanceState) {
       
       
        32
       
       
        super.onCreate(savedInstanceState);
       
       
        33
       
       
        setHasOptionsMenu(true);
       
       
        34
       
       
        }
       
       
        35
       
       
       
       
        36
       
       
        @Override
       
       
        37
       
       
        public void onActivityCreated(Bundle savedInstanceState) {
       
       
        38
       
       
        super.onActivityCreated(savedInstanceState);
       
       
        39
       
       
        final View decorView = getActivity().getWindow().getDecorView();
       
       
        40
       
       
        decorView.setOnSystemUiVisibilityChangeListener(
       
       
        41
       
       
        new View.OnSystemUiVisibilityChangeListener() {
       
       
        42
       
       
        @Override
       
       
        43
       
       
        public void onSystemUiVisibilityChange(int i) {
       
       
        44
       
       
        int height = decorView.getHeight();
       
       
        45
       
       
        Log.i(TAG, "Current height: " + height);
       
       
        46
       
       
        }
       
       
        47
       
       
        });
       
       
        48
       
       
        }
       
       
        49
       
       
       
       
        50
       
       
        @Override
       
       
        51
       
       
        public boolean onOptionsItemSelected(MenuItem item) {
       
       
        52
       
       
        if (item.getItemId() == R.id.sample_action) {
       
       
        53
       
       
        toggleHideyBar();
       
       
        54
       
       
        }
       
       
        55
       
       
        return true;
       
       
        56
       
       
        }
       
       
        57
       
       
       
       
        58
       
       
        /**
       
       
        59
       
       
        * Detects and toggles immersive mode (also known as "hidey bar" mode).
       
       
        60
       
       
        */
       
       
        61
       
       
        public void toggleHideyBar() {
       
       
        62
       
       
       
       
        64
       
       
        // The UI options currently enabled are represented by a bitfield.
       
       
        65
       
       
        // getSystemUiVisibility() gives us that bitfield.
       
       
        66
       
       
        int uiOptions = getActivity().getWindow().getDecorView().getSystemUiVisibility();
       
       
        67
       
       
        int newUiOptions = uiOptions;
       
       
        70
       
       
        boolean isImmersiveModeEnabled =
       
       
        71
       
       
        ((uiOptions | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY) == uiOptions);
       
       
        72
       
       
        if (isImmersiveModeEnabled) {
       
       
        73
       
       
        Log.i(TAG, "Turning immersive mode mode off. ");
       
       
        74
       
       
        } else {
       
       
        75
       
       
        Log.i(TAG, "Turning immersive mode mode on.");
       
       
        76
       
       
        }
       
       
        77
       
       
       
       
        78
       
       
        // Navigation bar hiding:  Backwards compatible to ICS.
       
       
        79
       
       
        if (Build.VERSION.SDK_INT >= 14) {
       
       
        80
       
       
        newUiOptions ^= View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
       
       
        81
       
       
        }
       
       
        82
       
       
       
       
        83
       
       
        // Status bar hiding: Backwards compatible to Jellybean
       
       
        84
       
       
        if (Build.VERSION.SDK_INT >= 16) {
       
       
        85
       
       
        newUiOptions ^= View.SYSTEM_UI_FLAG_FULLSCREEN;
       
       
        86
       
       
        }
       
       
        87
       
       
       
       
        88
       
       
        // Immersive mode: Backward compatible to KitKat.
       
       
        89
       
       
        // Note that this flag doesn't do anything by itself, it only augments the behavior
       
       
        90
       
       
        // of HIDE_NAVIGATION and FLAG_FULLSCREEN.  For the purposes of this sample
       
       
        91
       
       
        // all three flags are being toggled together.
       
       
        92
       
       
        // Note that there are two immersive mode UI flags, one of which is referred to as "sticky".
       
       
        93
       
       
        // Sticky immersive mode differs in that it makes the navigation and status bars
       
       
        94
       
       
        // semi-transparent, and the UI flag does not get cleared when the user interacts with
       
       
        95
       
       
        // the screen.
       
       
        96
       
       
        if (Build.VERSION.SDK_INT >= 18) {
       
       
        97
       
       
        newUiOptions ^= View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;
       
       
        98
       
       
        }
       
       
        99
       
       
       
       
        100
       
       
        getActivity().getWindow().getDecorView().setSystemUiVisibility(newUiOptions);
       
       
        102
       
       
        }
       
       
        103
       
       
        }