利用反射打开系统的通知栏STATUS_BAR

  调用系统的通知栏（也就是手指下滑出现的通知栏）需要加入权限：

<uses-permission android:name="android.permission.EXPAND_STATUS_BAR"/>
           

public void openNotify() {
		// TODO Auto-generated method stub
		int currentApiVersion = android.os.Build.VERSION.SDK_INT;
		try {
			Object service = getSystemService("statusbar");
			Class<?> statusbarManager = Class
					.forName("android.app.StatusBarManager");
			Method expand = null;
			if (service != null) {
				if (currentApiVersion <= 16) {
					expand = statusbarManager.getMethod("expand");
				} else {
					expand = statusbarManager
							.getMethod("expandNotificationsPanel");
				}
				expand.setAccessible(true);
				expand.invoke(service);
			}

		} catch (Exception e) {
		}

	}