Android获取常用辅助方法(获取屏幕高度、宽度、密度、通知栏高度、截图)

/*** 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* @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;}