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