ScreenUtils 获取屏幕相关的辅助类

/*** 获取屏幕相关的辅助类* Created by Administrator on 2017/2/21.*/
public class ScreenUtils {private ScreenUtils() {/* cannot be instantiated */throw new UnsupportedOperationException("cannot be instantiated");}/*** 获得屏幕宽度** @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;}/*** 获得屏幕高** @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;}/*** 根据手机的分辨率从 dp 的单位 转成为 px(像素)*/public static int dipTopx(Context context, int dpValue) {final float scale = context.getResources().getDisplayMetrics().density;return (int) (dpValue * scale + 0.5f);}/*** 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 = Bitmap.createBitmap(bmp, 0, statusBarHeight, width, height- statusBarHeight);view.destroyDrawingCache();return bp;}
}