SystemUiVisibilityUtil.java

/*
 * Copyright (c) 2016 咖枯 <kaku201313@163.com>
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */
package com.jaydenxiao.androidfire.utils;

import android.annotation.TargetApi;
import android.app.Activity;
import android.os.Build;
import android.view.View;

@TargetApi(Build.VERSION_CODES.KITKAT)
public class SystemUiVisibilityUtil {

    private static final int FLAG_IMMERSIVE = View.SYSTEM_UI_FLAG_IMMERSIVE // 与SYSTEM_UI_FLAG_HIDE_NAVIGATION组合使用，没有设置的话在隐藏导航栏后将没有交互
            | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION // 隐藏虚拟按键(导航栏)
            | View.SYSTEM_UI_FLAG_FULLSCREEN; // Activity全屏显示，且状态栏被隐藏覆盖掉

    public static void exit(Activity activity) {
        if (Build.VERSION.SDK_INT >= 19) {
            addFlags(activity.getWindow().getDecorView(), FLAG_IMMERSIVE);
        }
    }

    public static void addFlags(View decorView, int flags) {
        decorView.setSystemUiVisibility(decorView.getSystemUiVisibility() | flags);
    }

    public static void enter(Activity activity) {
        if (Build.VERSION.SDK_INT >= 19) {
            clearFlags(activity.getWindow().getDecorView(), FLAG_IMMERSIVE);
        }
    }

    public static void clearFlags(View view, int flags) {
        view.setSystemUiVisibility(view.getSystemUiVisibility() & ~flags);
        // & ~flags 清除view.getSystemUiVisibility()中的flags
    }

}