Vfrdtyky

I am trying to open Mainactivity after login success

protected void onPostExecute(JSONObject result) {

    try {

        if (result != null) {

            Toast.makeText(getApplicationContext(),result.getString("message"),Toast.LENGTH_LONG).show();

        } else {

            Toast.makeText(getApplicationContext(), "Unable to retrieve any data from server", Toast.LENGTH_LONG).show();

        }

    } catch (JSONException e) {

        e.printStackTrace();

}

"message" from PHP: "Successfully logged in" and "Incorrect details"

If i change:

protected void onPostExecute(JSONObject result) {

    try {

        if (result != null) {

            Toast.makeText(getApplicationContext(), result.getString("message"), Toast.LENGTH_LONG).show();

            Intent i = new Intent(getApplicationContext(), MainActivity.class);

            getApplicationContext().startActivity(i);

        } else {

            Toast.makeText(getApplicationContext(), "Unable to retrieve any data from server", Toast.LENGTH_LONG).show();

        }

    } catch (JSONException e) {

        e.printStackTrace();

    }

}

When both logged in successfully or failed, it enter MainActivity
Somebody help me

Replace your if condition with below condition.

  if (result != null && result.getString("message").contains("Successfully logged in"))

Based on your code, you will enter MainActivity when the result object is not null. You should add more conditions for entering MainActivity, like:

if (result != null && result.getString("result").equals("success"))

You are just checking if result is null or not. You should check for the exact status of login by modifying your code something like this.

if (result != null && result.optString("message", "failed").equals("Successfully logged in"))

Using optString will do good even if the value for "message" is null.

NOTE: You can modify the code based on your JSON structure.

protected void onPostExecute(JSONObject result) {

        try {

            if (result.length() != 0) {

                Toast.makeText(getApplicationContext(), result.getString("message"), Toast.LENGTH_LONG).show();

                        Intent i = new Intent(getApplicationContext(), MainActivity.class);

                      startActivity(i);



            } else {

                Toast.makeText(getApplicationContext(), "Unable to retrieve any data from server", Toast.LENGTH_LONG).show();

            }

        } catch (JSONException e) {

            e.printStackTrace();

        }

    }