Android_检查是否联网

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检查是否联网

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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;
}

public static void HttpTest(final Activity mActivity) {
 if (!isNetworkAvailable(mActivity)) {
  showToast(mActivity);
 }
}

public static void showToast(Activity mActivity) {
 Vibrator mVibrator01 = (Vibrator) mActivity.getApplication()
   .getSystemService(Service.VIBRATOR_SERVICE);
 mVibrator01.vibrate(new long[] { 100, 10, 100, 1000 }, -1);
 Toast.makeText(mActivity, "请检查是否联网", 500).show();
}

其中还要加上手机震动和联网的权限：

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