屏幕相关的辅助类

来源：互联网发布：乔峰传侠客进阶数据编辑：程序博客网时间：2024/05/18 00:58
/*** 获得屏幕相关的辅助类** @author zhy**/public class ScreenUtils{    private ScreenUtils()    {        /* cannot be instantiated */        throw new UnsupportedOperationException("cannot be instantiated");    }    /**     * 获得屏幕高度     *     * @param context     * @return     */    public static int getScreenWidth(Context context)    {        WindowManager wm = (WindowManager) context                .getSystemService(Context.WINDOW_SERVICE);        DisplayMetrics outMetrics = new DisplayMetrics();        wm.getDefaultDisplay().getMetrics(outMetrics);        return outMetrics.widthPixels;    }    /**     * 获得屏幕宽度     *     * @param context     * @return     */    public static int getScreenHeight(Context context)    {        WindowManager wm = (WindowManager) context                .getSystemService(Context.WINDOW_SERVICE);        DisplayMetrics outMetrics = new DisplayMetrics();        wm.getDefaultDisplay().getMetrics(outMetrics);        return outMetrics.heightPixels;    }    /**     * 获得状态栏的高度     *     * @param context     * @return     */    public static int getStatusHeight(Context context)    {        int statusHeight = -1;        try        {            Class<?> clazz = Class.forName("com.android.internal.R$dimen");            Object object = clazz.newInstance();            int height = Integer.parseInt(clazz.getField("status_bar_height")                    .get(object).toString());            statusHeight = context.getResources().getDimensionPixelSize(height);        } catch (Exception e)        {            e.printStackTrace();        }        return statusHeight;    }    /**     * 获取当前屏幕截图，包含状态栏     *     * @param activity     * @return     */    public static Bitmap snapShotWithStatusBar(Activity activity)    {        View view = activity.getWindow().getDecorView();        view.setDrawingCacheEnabled(true);        view.buildDrawingCache();        Bitmap bmp = view.getDrawingCache();        int width = getScreenWidth(activity);        int height = getScreenHeight(activity);        Bitmap bp = null;        bp = Bitmap.createBitmap(bmp, 0, 0, width, height);        view.destroyDrawingCache();        return bp;    }    /**     * 获取当前屏幕截图，不包含状态栏     *     * @param activity     * @return     */    public static Bitmap snapShotWithoutStatusBar(Activity activity)    {        View view = activity.getWindow().getDecorView();        view.setDrawingCacheEnabled(true);        view.buildDrawingCache();        Bitmap bmp = view.getDrawingCache();        Rect frame = new Rect();        activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);        int statusBarHeight = frame.top;        int width = getScreenWidth(activity);        int height = getScreenHeight(activity);        Bitmap bp = null;        bp = Bitmap.createBitmap(bmp, 0, statusBarHeight, width, height                - statusBarHeight);        view.destroyDrawingCache();        return bp;    }}
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