Android开发之获取屏幕宽高、屏幕密度、截取屏幕、全屏、横竖屏切换-ScreentUtils

在开发中，经常会用到屏幕相关的操作，比如，获取屏幕宽高、屏幕密度、截取屏幕、全屏、横竖屏切换等等，因此，在这稍加整理以下内容

获取屏幕宽度

public static int getScreenWidth() {
        WindowManager wm = (WindowManager) Utils.getApp().getSystemService(Context.WINDOW_SERVICE);
        if (wm == null) {
            return Utils.getApp().getResources().getDisplayMetrics().widthPixels;
        }
        Point point = new Point();
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
            wm.getDefaultDisplay().getRealSize(point);
        } else {
            wm.getDefaultDisplay().getSize(point);
        }
        return point.x;
}

获取屏幕高度

public static int getScreenHeight() {
        WindowManager wm = (WindowManager) Utils.getApp().getSystemService(Context.WINDOW_SERVICE);
        if (wm == null) {
            return Utils.getApp().getResources().getDisplayMetrics().heightPixels;
        }
        Point point = new Point();
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
            wm.getDefaultDisplay().getRealSize(point);
        } else {
            wm.getDefaultDisplay().getSize(point);
        }
        return point.y;
}

获取屏幕密度

public static float getScreenDensity() {
        return Utils.getApp().getResources().getDisplayMetrics().density;
}

设置全屏

public static void setFullScreen(@NonNull final Activity activity) {
        activity.getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN
                | WindowManager.LayoutParams.FLAG_LAYOUT_NO_LIMITS);
}

设置竖屏

public static void setLandscape(@NonNull final Activity activity) {
        activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_LANDSCAPE);
}

设置横屏

public static void setPortrait(@NonNull final Activity activity) {
        activity.setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
}

是否竖屏

public static boolean isLandscape() {
        return Utils.getApp().getResources().getConfiguration().orientation
                == Configuration.ORIENTATION_LANDSCAPE;
}

是否横屏

public static boolean isPortrait() {
        return Utils.getApp().getResources().getConfiguration().orientation
                == Configuration.ORIENTATION_PORTRAIT;
    }

截取屏幕

public static Bitmap screenShot(@NonNull final Activity activity, boolean isDeleteStatusBar) {
        View decorView = activity.getWindow().getDecorView();
        decorView.setDrawingCacheEnabled(true);
        decorView.buildDrawingCache();
        Bitmap bmp = decorView.getDrawingCache();
        DisplayMetrics dm = new DisplayMetrics();
        activity.getWindowManager().getDefaultDisplay().getMetrics(dm);
        Bitmap ret;
        if (isDeleteStatusBar) {
            Resources resources = activity.getResources();
            int resourceId = resources.getIdentifier("status_bar_height", "dimen", "android");
            int statusBarHeight = resources.getDimensionPixelSize(resourceId);
            ret = Bitmap.createBitmap(
                    bmp,
                    0,
                    statusBarHeight,
                    dm.widthPixels,
                    dm.heightPixels - statusBarHeight
            );
        } else {
            ret = Bitmap.createBitmap(bmp, 0, 0, dm.widthPixels, dm.heightPixels);
        }
        decorView.destroyDrawingCache();
        return ret;
}

是否锁屏

public static boolean isScreenLock() {
        KeyguardManager km =
                (KeyguardManager) Utils.getApp().getSystemService(Context.KEYGUARD_SERVICE);
        return km != null && km.inKeyguardRestrictedInputMode();
}