android实现沉浸式状态栏

关于

  工作中很多项目都会使用到沉浸式状态栏以达到和导航栏无缝连接的美感。此篇文章也会作为简易音乐博客系列的使用工具类之一。

效果

  图片填充状态栏：

  颜色填充状态栏：

当然了，也可以通过设置Alpha（0-255）来设置透明度，是纯正的蓝还是暗色的蓝。

沉浸管理工具类

/**
 * 2020年7月18日13:55:00
 * 沉浸式管理工具类
 */
public class StatusBarUtil {
   
   
    public static final String TAG = "StatusBarUtil";
    private static final int DEFAULT_STATUS_BAR_ALPHA = 112;
    private static final int FAKE_STATUS_BAR_VIEW_ID = R.id.statusbarutil_fake_status_bar_view;
    private static final int FAKE_TRANSLUCENT_VIEW_ID = R.id.statusbarutil_translucent_view;
    private static final int TAG_KEY_HAVE_SET_OFFSET = -123;

    /**
     * 设置状态栏颜色
     *
     * @param activity 需要设置的 activity
     * @param color    状态栏颜色值
     */
    public static void setColor(Activity activity, @ColorInt int color) {
   
   
        setColor(activity, color, DEFAULT_STATUS_BAR_ALPHA);
    }

    /**
     * 设置状态栏颜色
     * API等级19:Android 4.4 KitKat   API等级20:Android 4.4W   API等级21:Android 5.0 Lollipop
     * API等级22:Android 5.1 Lollipop  API等级23:Android 6.0 Marshmallow   API等级24:Android 7.0 Nougat
     *
     * @param activity       需要设置的activity
     * @param color          状态栏颜色值
     * @param statusBarAlpha 状态栏透明度
     */
    public static void setColor(Activity activity, @ColorInt int color, @IntRange(from = 0, to = 255) int statusBarAlpha) {
   
   
        //21以上
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
   
   
            activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
            activity.getWindow().clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
            activity.getWindow().setStatusBarColor(calculateStatusColor(color, statusBarAlpha));
            //19到21
        } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
   
   
            activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
            //DecorView是顶级View，内部有titlebar和contentParent两个子元素,
            // contentParent的id是content，而我们设置的main.xml布局则是contentParent里面的一个子元素
            ViewGroup decorView = (ViewGroup) activity.getWindow().getDecorView();
            View fakeStatusBarView = decorView.findViewById(FAKE_STATUS_BAR_VIEW_ID);
            if (fakeStatusBarView != null) {
   
   
                if (fakeStatusBarView.getVisibility() == View.GONE) {
   
   
                    fakeStatusBarView.setVisibility(View.VISIBLE);
                }
                fakeStatusBarView.setBackgroundColor(calculateStatusColor(color, statusBarAlpha));
            } else {
   
   
                //第一次加载会先创建并添加
                decorView.addView(createStatusBarView(activity, color, statusBarAlpha));
            }
            setRootView(activity);
        }
    }

    /**
     * 为滑动返回界面设置状态栏颜色
     *
     * @param activity 需要设置的activity
     * @param color    状态栏颜色值
     */
    public static void setColorForSwipeBack(Activity activity, int color) {
   
   
        setColorForSwipeBack(activity, color, DEFAULT_STATUS_BAR_ALPHA);
    }

    /**
     * 为滑动返回界面设置状态栏颜色
     *
     * @param activity       需要设置的activity
     * @param color          状态栏颜色值
     * @param statusBarAlpha 状态栏透明度
     */
    public static void setColorForSwipeBack(Activity activity, @ColorInt int color,
                                            @IntRange(from = 0, to = 255) int statusBarAlpha) {
   
   
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
   
   
            ViewGroup contentView = ((ViewGroup) activity.findViewById(android.R.id.content));
            View rootView = contentView.getChildAt(0);
            int statusBarHeight = getStatusBarHeight(activity);
            if (rootView instanceof CoordinatorLayout) {
   
   
                final CoordinatorLayout coordinatorLayout = (CoordinatorLayout) rootView;
                if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
   
   
                    coordinatorLayout.setFitsSystemWindows(false);
                    contentView.setBackgroundColor(calculateStatusColor(color, statusBarAlpha));
                    boolean isNeedRequestLayout = contentView.getPaddingTop() < statusBarHeight;
                    if (isNeedRequestLayout) {
   
   
                        contentView.setPadding(0, statusBarHeight, 0, 0);
                        coordinatorLayout.post(new Runnable() {
   
   
                            @Override
                            public void run() {
   
   
                                coordinatorLayout.requestLayout();
                            }
                        });
                    }
                } else {
   
   
                    coordinatorLayout.setStatusBarBackgroundColor(calculateStatusColor(color, statusBarAlpha));
                }
            } else {
   
   
                contentView.setPadding(0, statusBarHeight, 0, 0);
                contentView.setBackgroundColor(calculateStatusColor(color, statusBarAlpha));
            }
            setTransparentForWindow(activity);
        }
    }

    /**
     * 设置状态栏纯色 不加半透明效果
     *
     * @param activity 需要设置的 activity
     * @param color    状态栏颜色值
     */
    public static void setColorNoTranslucent(Activity activity, @ColorInt int color) {
   
   
        setColor(activity, color, 0);
    }

    /**
     * 设置状态栏颜色(5.0以下无半透明效果,不建议使用)
     *
     * @param activity 需要设置的 activity
     * @param color    状态栏颜色值
     */
    @Deprecated
    public static void setColorDiff(Activity activity, @ColorInt int color) {
   
   
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT) {
   
   
            return;
        }
        transparentStatusBar(