android 检测手机联网，给出震动提示

判断手机联网，给出震动提示的代码：

    　　public static boolean isNetworkAvailable(Activity mActivity) {
            Context context = mActivity.getApplicationContext();
            ConnectivityManager connectivity = (ConnectivityManager) context
                    .getSystemService(Context.CONNECTIVITY_SERVICE);
            if (connectivity == null) {
                return false;
            } else {
                NetworkInfo[] info = connectivity.getAllNetworkInfo();
                if (info != null) {
                    for (int i = 0; i < info.length; i++) {
                        if (info[i].getState() == NetworkInfo.State.CONNECTED) {
                            return true;
                        }
                    }
                }
            }
            return false;
        }

        /**
         * 检测网络是否存在
         */
        public static void HttpTest(final Activity mActivity) {
            if (!isNetworkAvailable(mActivity)) {
                showToast(mActivity);
            }
        }
        public static void showToast(Activity mActivity) {
            TextView tv = new TextView(mActivity);
            Vibrator mVibrator01 = (Vibrator) mActivity.getApplication()
                    .getSystemService(Service.VIBRATOR_SERVICE);
            mVibrator01.vibrate(new long[] { 100, 10, 100, 1000 }, -1);
            tv.setText("没有连接网络");
            Toast toast = new Toast(mActivity);
            toast.setView(tv);
            toast.setDuration(Toast.LENGTH_LONG);
            toast.show();
        }

其中还要加上手机震动和检测网络状态的权限：

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