Android(安卓)获取屏幕高宽度，密度，通知栏高度，截图等常用方法

分享一下Android中常用的一些辅助方法：

获取屏幕高度：

 /**     * 获得屏幕高度     * @param context     * @return     * by Hankkin at:2015-10-07 21:15:59     */    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;    }

获取屏幕宽度：

/**     * 获得屏幕宽度     * @param context     * @return     * by Hankkin at:2015-10-07 21:16:13     */    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;    }

获取屏幕密度：

/**     * 获取屏幕密度     * @param context     * @return     * by Hankkin at:2015-10-07 21:16:29     */    public static float getScreenDensity(Context context) {        return context.getResources().getDisplayMetrics().density;    }

dip转px：

/**     * dip转px像素     * @param context     * @param px     * @return     * by Hankkin at:2015-10-07 21:16:43     */    public static int dip2px(Context context, float px) {        final float scale = getScreenDensity(context);        return (int) (px * scale + 0.5);    }

获取状态栏高度：

/**     * 获得状态栏的高度     * @param context     * @return     * by Hankkin at:2015-10-07 21:16:43     */    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;    }

获取屏幕当前截图：

/**     * 获取当前屏幕截图，包含状态栏     * @param activity     * @return     * by Hankkin at:2015-10-07 21:16:43     */    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     * by Hankkin at:2015-10-07 21:16:43     */    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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