Passing data from one activity to another using bundle - not displaying in second activity

Question

I'm currently trying to take data acquired through a REST API call, parse it for the information I need, and then pass that information to a new activity. I'm using the Asynchronous HTTP Client from loopj.com for the REST client, and then using the below code for my onClick and onCreate for the current and future activities, respectively.

Eclipse does not pass me any errors for any of my code, but when I try to run in the emulator, I get nothing (i.e. blank white screen) when the new activity/view opens. I've tried to code with a different URL in my REST CLIENT, but I still see nothing. I even took the API call out of the equation by commenting out the try/catch in onClick and changing venueName in the bundle.putString("VENUE_NAME", venueName); to searchTerm. Still, the new view comes up but nothing is displayed. What is not being passed, or what am I forgetting to make the second activity show the venueName?

public void onClick(View view) {
    Intent i = new Intent(this, ResultsView.class);
    EditText editText = (EditText) findViewById(R.id.edit_message);
    String searchTerm = editText.getText().toString();


    //call the getFactualResults method
    try {
        getFactualResults(searchTerm);
    } catch (JSONException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

    //Create the bundle
    Bundle bundle = new Bundle();
    //Add your data from getFactualResults method to bundle
    bundle.putString("VENUE_NAME", venueName);  
    //Add the bundle to the intent
    i.putExtras(bundle);

    //Fire the second activity
    startActivity(i);
}

Method in second activity that should receive the intent and bundle and display it:

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    //Get the message from the intent
    //Intent intent = getIntent();
    //String message = intent.getStringExtra(MainActivity.EXTRA_MESSAGE);

    //Get the bundle
    Bundle bundle = getIntent().getExtras();

    //Extract the data…
    String venName = bundle.getString(MainActivity.VENUE_NAME);        

    //Create the text view
    TextView textView = new TextView(this);
    textView.setTextSize(40);
    textView.setText(venName);

    //set the text view as the activity layout
    setContentView(textView);

    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
        getActionBar().setDisplayHomeAsUpEnabled(true);
    }
}

Thanks for your help. Very much appreciated.

score 31 · Accepted Answer · answered Mar 16 '13 at 03:31

Two ways you can send the data. This is how you are sending it at the moment. And there is nothing wrong with it.

//Create the bundle
Bundle bundle = new Bundle();
//Add your data from getFactualResults method to bundle
bundle.putString("VENUE_NAME", venueName);
//Add the bundle to the intent
i.putExtras(bundle);
startActivity(i);

In you code (second Activity) however, you are referring to the key in the Bundle as MainActivity.VENUE_NAME but nothing in the code suggests that you have a class that returns the value as the actual key name send with the Bundle. Change your code in the second Activity to this:

Bundle bundle = getIntent().getExtras();

//Extract the data…
String venName = bundle.getString("VENUE_NAME");        

//Create the text view
TextView textView = new TextView(this);
textView.setTextSize(40);
textView.setText(venName);

You can check in your second Activity if the Bundle contains the key using this and you will know that the key is not present in the Bundle. The correction above, however, will get it working for you.

if (bundle.containsKey(MainActivity.VENUE_NAME))    {
    ....
}

This is a really great succinct yet fully detailed answer. Thanks for writing that up so clearly. It helped me understand how to use bundles very quickly. — raddevus, Feb 28 '16 at 15:48

score 5 · Answer 2 · answered Mar 16 '13 at 05:35

I think if you replace

String venName = bundle.getString(MainActivity.VENUE_NAME);

with

String venName = bundle.getString("VENUE_NAME");

it should work.

Here is how I handle my transfer of data from one activity to another:

Sending data to activity called "Projectviewoptions":

Bundle b = new Bundle();
          b.putString("id", str_projectid);
          Projectviewoptions pv = new Projectviewoptions();

Receiving data:

idbundle = getArguments();
String myid = idbundle.getString("id");

The "key" on both sides should be same; in this case "id".

Another way to send data, through intent is:

Send:

Intent intent = new Intent(getActivity(),ViewProjectDetails.class);
                            intent.putExtra("id", myid);
                            startActivity(intent);

Recieve:

String id = getIntent().getExtras().getString("id");

score 4 · Answer 3 · answered Mar 16 '13 at 03:42

You are wrongly accessing the key which you have added in bundle. Besides getting the String as MainActivity.VENUE_NAME try to directly pass the key name which you have added in bundle as below:

Besides getting string as below :

   //Get the bundle
     Bundle bundle = getIntent().getExtras();
    //Extract the data…
   String venName = bundle.getString(MainActivity.VENUE_NAME);

Try to get the string using key name as below:

    /Get the bundle
     Bundle bundle = getIntent().getExtras();
    //Extract the data…
   String venName = bundle.getString("VENUE_NAME");

score 1 · Answer 4 · answered Mar 16 '13 at 03:31

1

to send bundle.

Bundle bundle = new Bundle();
bundle.putString("Name",Object); //This is for a String
i.setClass(CurrentClass.this, Class.class);
i.putExtras(bundle);
startActivity(i);

to receive bundle

Bundle bundle = null;
bundle = this.getIntent().getExtras();
String myString = bundle.getString("Name");//this is for String

answered Mar 16 '13 at 03:31

Andre Viau

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Here what is "i " . Please explain Meaning of I – Ashish Shahi May 25 '17 at 08:27
If You Define Intent i = new Intent(); i am already try this Please explain Your answer – Ashish Shahi May 25 '17 at 08:28

score 0 · Answer 5 · answered Mar 16 '13 at 03:21

0

Make sure the String you used as the key to put the item into your Bundle is the same as the key used to extract it. In your case, perhaps MainActivity.VENUE_NAME is not the same as "VENUE_NAME"

answered Mar 16 '13 at 03:21

Karakuri

38,365
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score 0 · Answer 6 · edited Jun 18 '18 at 11:55

0

Intent loginIntent = new Intent(LoginActivity.this, HomeActivity.class);

Bundle bundle = new Bundle(); 


bundle.putString("user_id", userId);

i.putExtras(bundle);

startActivity(loginIntent);

LoginActivity.this.finish();

edited Jun 18 '18 at 11:55

AskNilesh

67,701
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answered Mar 23 '17 at 06:03

Anand Phadke

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score 0 · Answer 7 · answered Jan 29 '21 at 11:39

package com.example.mytest;

import androidx.annotation.MainThread;
import androidx.annotation.Nullable;
import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.Toast;

import static com.example.mytest.MainActivity.STATIC_VARIABLE;

public class MainActivity2 extends AppCompatActivity {
   EditText editText1;
    Button button1;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);
        editText1 = (EditText) findViewById(R.id.editText1);
        button1 = (Button) findViewById(R.id.button1);
        Bundle extras=null;
         extras=this.getIntent().getExtras();
        if(extras!=null) {
          String recieved =extras.getString("TAG");
          editText1.setText(String.valueOf(recieved));
        }
        button1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
  Intent backIntent = new Intent(MainActivity2.this, MainActivity.class);
                String input= editText1.getText().toString();
                backIntent.putExtra("TAG2",input);
               STATIC_VARIABLE=3;
//    setResult(RESULT_OK,intent);
//                startActivityForResult(intent, 2);
                startActivity(backIntent);


            }
        });
    }


    }

score 0 · Answer 8 · answered Jan 07 '23 at 10:25

0

There no need to use Bundle just to pass a string (or any primitive data type).
You can use i.putExtra("key", "value"); in the calling activity and
String s = getIntent().getStringExtra("key"); in the called activity.

answered Jan 07 '23 at 10:25

TDG

5,909
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Passing data from one activity to another using bundle - not displaying in second activity

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