134 lines
4.8 KiB
Java
134 lines
4.8 KiB
Java
package com.mhalka.qurantranslationdisplay.util;
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import android.annotation.TargetApi;
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import android.app.Activity;
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import android.os.Build;
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import android.view.View;
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import android.view.WindowManager;
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/**
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* An API 11+ implementation of {@link SystemUiHider}. Uses APIs available in
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* Honeycomb and later (specifically {@link View#setSystemUiVisibility(int)}) to
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* show and hide the system UI.
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*/
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@TargetApi(Build.VERSION_CODES.HONEYCOMB)
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public class SystemUiHiderHoneycomb extends SystemUiHiderBase {
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/**
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* Flags for {@link View#setSystemUiVisibility(int)} to use when showing the
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* system UI.
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*/
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private int mShowFlags;
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/**
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* Flags for {@link View#setSystemUiVisibility(int)} to use when hiding the
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* system UI.
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*/
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private int mHideFlags;
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/**
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* Flags to test against the first parameter in
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* {@link android.view.View.OnSystemUiVisibilityChangeListener#onSystemUiVisibilityChange(int)}
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* to determine the system UI visibility state.
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*/
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private int mTestFlags;
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/**
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* Whether or not the system UI is currently visible. This is cached from
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* {@link android.view.View.OnSystemUiVisibilityChangeListener}.
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*/
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private boolean mVisible = true;
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/**
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* Constructor not intended to be called by clients. Use
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* {@link SystemUiHider#getInstance} to obtain an instance.
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*/
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protected SystemUiHiderHoneycomb(Activity activity, View anchorView, int flags) {
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super(activity, anchorView, flags);
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mShowFlags = View.SYSTEM_UI_FLAG_VISIBLE;
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mHideFlags = View.SYSTEM_UI_FLAG_LOW_PROFILE;
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mTestFlags = View.SYSTEM_UI_FLAG_LOW_PROFILE;
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if ((mFlags & FLAG_FULLSCREEN) != 0) {
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// If the client requested fullscreen, add flags relevant to hiding
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// the status bar. Note that some of these constants are new as of
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// API 16 (Jelly Bean). It is safe to use them, as they are inlined
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// at compile-time and do nothing on pre-Jelly Bean devices.
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mShowFlags |= View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN;
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mHideFlags |= View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
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| View.SYSTEM_UI_FLAG_FULLSCREEN;
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}
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if ((mFlags & FLAG_HIDE_NAVIGATION) != 0) {
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// If the client requested hiding navigation, add relevant flags.
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mShowFlags |= View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION;
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mHideFlags |= View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
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| View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
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mTestFlags |= View.SYSTEM_UI_FLAG_HIDE_NAVIGATION;
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}
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}
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/** {@inheritDoc} */
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@Override
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public void setup() {
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mAnchorView.setOnSystemUiVisibilityChangeListener(mSystemUiVisibilityChangeListener);
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}
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/** {@inheritDoc} */
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@Override
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public void hide() {
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mAnchorView.setSystemUiVisibility(mHideFlags);
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}
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/** {@inheritDoc} */
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@Override
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public void show() {
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mAnchorView.setSystemUiVisibility(mShowFlags);
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}
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/** {@inheritDoc} */
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@Override
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public boolean isVisible() {
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return mVisible;
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}
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private View.OnSystemUiVisibilityChangeListener mSystemUiVisibilityChangeListener
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= new View.OnSystemUiVisibilityChangeListener() {
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@Override
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public void onSystemUiVisibilityChange(int vis) {
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// Test against mTestFlags to see if the system UI is visible.
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if ((vis & mTestFlags) != 0) {
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if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
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// Pre-Jelly Bean, we must manually hide the action bar
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// and use the old window flags API.
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mActivity.getActionBar().hide();
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mActivity.getWindow().setFlags(
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WindowManager.LayoutParams.FLAG_FULLSCREEN,
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WindowManager.LayoutParams.FLAG_FULLSCREEN);
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}
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// Trigger the registered listener and cache the visibility
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// state.
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mOnVisibilityChangeListener.onVisibilityChange(false);
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mVisible = false;
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} else {
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mAnchorView.setSystemUiVisibility(mShowFlags);
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if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN) {
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// Pre-Jelly Bean, we must manually show the action bar
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// and use the old window flags API.
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mActivity.getActionBar().show();
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mActivity.getWindow().setFlags(
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0,
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WindowManager.LayoutParams.FLAG_FULLSCREEN);
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}
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// Trigger the registered listener and cache the visibility
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// state.
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mOnVisibilityChangeListener.onVisibilityChange(true);
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mVisible = true;
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}
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}
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};
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}
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