Demonstration of the various fullscreen modes:
FLAG_FULLSCREEN, SYSTEM_UI_FLAG_LOW_PROFILE, SYSTEM_UI_FLAG_HIDE_NAVIGATION. Bug: 5052456 Change-Id: I3c23caa83a66b585ae1102e3d473f6e4f096840d
This commit is contained in:
Daniel Sandler
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/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.example.android.apis.view;
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import android.app.Activity;
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import android.content.Context;
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import android.os.Bundle;
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import android.util.AttributeSet;
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import android.util.DisplayMetrics;
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import android.view.KeyEvent;
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import android.view.Menu;
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import android.view.MenuItem;
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import android.view.View;
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import android.view.View.OnClickListener;
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import android.view.Window;
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import android.view.WindowManager;
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import android.widget.ImageView;
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import android.widget.TextView;
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import com.example.android.apis.R;
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/**
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* This activity demonstrates some of the available ways to reduce the size or visual contrast of
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* the system decor, in order to better focus the user's attention or use available screen real
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* estate on the task at hand.
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*/
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public class OverscanActivity extends Activity {
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public static class IV extends ImageView {
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private OverscanActivity mActivity;
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public IV(Context context) {
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super(context);
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}
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public IV(Context context, AttributeSet attrs) {
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super(context, attrs);
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}
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public void setActivity(OverscanActivity act) {
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mActivity = act;
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}
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public void onSizeChanged(int w, int h, int oldw, int oldh) {
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mActivity.refreshSizes();
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}
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public void onSystemUiVisibilityChanged(int visibility) {
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mActivity.getState().onSystemUiVisibilityChanged(visibility);
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}
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}
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private interface State {
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void apply();
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State next();
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void onSystemUiVisibilityChanged(int visibility);
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}
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private class NormalState implements State {
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public void apply() {
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display("Normal");
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setFullscreen(false);
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mImage.setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);
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}
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public State next() {
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return new FullscreenState();
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}
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public void onSystemUiVisibilityChanged(int visibility) {
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}
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}
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private class FullscreenState implements State {
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public void apply() {
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display("FULLSCREEN");
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setFullscreen(true);
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}
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public State next() {
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return new FullscreenLightsOutState();
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}
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public void onSystemUiVisibilityChanged(int visibility) {
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}
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}
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private class FullscreenLightsOutState implements State {
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public void apply() {
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display("FULLSCREEN + LOW_PROFILE");
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mImage.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE);
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}
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public State next() {
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return new OverscanState();
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}
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public void onSystemUiVisibilityChanged(int visibility) {
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}
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}
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private class OverscanState implements State {
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public void apply() {
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display("FULLSCREEN + LOW_PROFILE + HIDE_NAVIGATION");
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mImage.setSystemUiVisibility(View.SYSTEM_UI_FLAG_LOW_PROFILE
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| View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);
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}
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public State next() {
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return new NormalState();
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}
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public void onSystemUiVisibilityChanged(int visibility) {
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}
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}
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private void setFullscreen(boolean on) {
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Window win = getWindow();
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WindowManager.LayoutParams winParams = win.getAttributes();
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final int bits = WindowManager.LayoutParams.FLAG_FULLSCREEN;
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if (on) {
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winParams.flags |= bits;
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} else {
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winParams.flags &= ~bits;
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}
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win.setAttributes(winParams);
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}
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private String getDisplaySize() {
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DisplayMetrics dm = getResources().getDisplayMetrics();
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return String.format("DisplayMetrics = (%d x %d)", dm.widthPixels, dm.heightPixels);
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}
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private String getViewSize() {
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return String.format("View = (%d,%d - %d,%d)",
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mImage.getLeft(), mImage.getTop(),
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mImage.getRight(), mImage.getBottom());
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}
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void refreshSizes() {
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mText2.setText(getDisplaySize() + " " + getViewSize());
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}
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private void display(String text) {
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mText1.setText(text);
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refreshSizes();
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}
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State getState() {
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return mState;
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}
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static int TOAST_LENGTH = 500;
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IV mImage;
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TextView mText1, mText2;
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State mState;
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public OverscanActivity() {
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}
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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// we need to ask for LAYOUT_IN_SCREEN before the window decor appears
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Window win = getWindow();
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WindowManager.LayoutParams winParams = win.getAttributes();
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winParams.flags |= WindowManager.LayoutParams.FLAG_LAYOUT_IN_SCREEN;
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win.setAttributes(winParams);
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setContentView(R.layout.overscan);
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mImage = (IV) findViewById(R.id.image);
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mImage.setActivity(this);
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mText1 = (TextView) findViewById(R.id.text1);
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mText2 = (TextView) findViewById(R.id.text2);
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}
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@Override
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public void onAttachedToWindow() {
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mState = new NormalState();
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mState.apply();
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}
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@Override
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protected void onResume() {
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super.onResume();
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}
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public void clicked(View v) {
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mState = mState.next();
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mState.apply();
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}
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}
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