Android全面屏手机获取屏幕高度适配问题

在做手机截屏功能的时候发现，全面屏截图和调用系统的截图不一致

https://blog.csdn.net/consumer11/article/details/51967340

经排查，是获取手机屏幕高度的值不对

getResources().getDisplayMetrics().heightPixels 在三星S8上返回的值不对，没包含系统状态栏

Stack Overflow上找到了答案

https://stackoverflow.com/questions/34244599/getdisplaymetrics-heightpixels-isnt-accurate?utm_medium=organic&utm_source=google_rich_qa&utm_campaign=google_rich_qa

mActivity.getWindowManager().getDefaultDisplay().getRealMetrics(metrics); 用这个方法去获取的，就一直是包含状态栏的

    public static int getFullActivityHeight(@Nullable Context context) {
        if (!isAllScreenDevice()) {
            return getScreenHeight(context);
        }
        return getScreenRealHeight(context);
    }

    private static final int PORTRAIT = 0;
    private static final int LANDSCAPE = 1;
    @NonNull
    private volatile static Point[] mRealSizes = new Point[2];


    public static int getScreenRealHeight(@Nullable Context context) {
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.JELLY_BEAN_MR1) {
            return getScreenHeight(context);
        }

        int orientation = context != null
                ? context.getResources().getConfiguration().orientation
                : AppUtils.getContext().getResources().getConfiguration().orientation;
        orientation = orientation == Configuration.ORIENTATION_PORTRAIT ? PORTRAIT : LANDSCAPE;

        if (mRealSizes[orientation] == null) {
            WindowManager windowManager = context != null
                    ? (WindowManager) context.getSystemService(Context.WINDOW_SERVICE)
                    : (WindowManager) AppUtils.getContext().getSystemService(Context.WINDOW_SERVICE);
            if (windowManager == null) {
                return getScreenHeight(context);
            }
            Display display = windowManager.getDefaultDisplay();
            Point point = new Point();
            display.getRealSize(point);
            mRealSizes[orientation] = point;
        }
        return mRealSizes[orientation].y;
    }

    public static int getScreenHeight(@Nullable Context context) {
        if (context != null) { 
            return context.getResources().getDisplayMetrics().heightPixels;
        }
        return 0;
    }

    private volatile static boolean mHasCheckAllScreen;
    private volatile static boolean mIsAllScreenDevice;

    public static boolean isAllScreenDevice() {
        if (mHasCheckAllScreen) {
            return mIsAllScreenDevice;
        }
        mHasCheckAllScreen = true;
        mIsAllScreenDevice = false;
        // 低于 API 21的，都不会是全面屏。。。
        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
            return false;
        }
        WindowManager windowManager = (WindowManager) AppUtils.getContext().getSystemService(Context.WINDOW_SERVICE);
        if (windowManager != null) {
            Display display = windowManager.getDefaultDisplay();
            Point point = new Point();
            display.getRealSize(point);
            float width, height;
            if (point.x < point.y) {
                width = point.x;
                height = point.y;
            } else {
                width = point.y;
                height = point.x;
            }
            if (height / width >= 1.97f) {
                mIsAllScreenDevice = true;
            }
        }
        return mIsAllScreenDevice;
    }