Android Open Source - SensorModelDataCollector System Ui Hider Honeycomb

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License

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This is free and unencumbered software released into the public domain. Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a co...

Java Source Code

package com.clarkson.sensormodeldatacollector.util;
// w ww  . ja va 2  s. c o  m
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;
            }
        }
    };
}

Java Source Code List

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