how to transfer data from edittext to spinner both are in different activity

Question

I have 3 activity..In 1st activity i have 2 button 1st button is to start 2nd activity and 2nd button is to start 3rd activity.The 2nd activity containing edittext and button.The 3rd activity containing Spinner.I want to transfer data from edittext to spinner

1 activity

2 activity

[3 activity][3]

first activity

public class MainActivity extends Activity {
String item;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);


}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {

    if (requestCode == 1) {
        if(resultCode == Activity.RESULT_OK){
            String resultStr = data.getStringExtra("result");
            item=resultStr;
        }
    }
}

public void start1(View view)
{
    Intent intent = new Intent(this,Task.class);
    startActivityForResult(intent, 1);
}
public void start2(View view)
{
    Intent intent = new Intent(getBaseContext(), Spinner.class);
    intent .putExtra("send_data",item);
    startActivity(intent);
}
}

second activity:

public class Task extends Activity {
Button btnAdd;
EditText subject;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_task);
    btnAdd = (Button)findViewById(R.id.add) ;


    btnAdd.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View view) {
            subject = (EditText) findViewById(R.id.editText);
            String content = subject.getText().toString();
            Intent returnIntent = new Intent();
            returnIntent.putExtra("result",content);
            setResult(Activity.RESULT_OK,returnIntent);
        }
    });
}

}

third activity:

public class Spinner extends Activity {
android.widget.Spinner spinner;
ArrayAdapter<String> dataAdapter;
ArrayList<String> list = new ArrayList<String>();
SharedPreferences sharedPref;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_spinner);
    spinner = (android.widget.Spinner) findViewById(R.id.spinner);


    sharedPref = getSharedPreferences("Info", Context.MODE_PRIVATE);
    Set<String> savedStringSet = sharedPref.getStringSet("SpinnerData", null);
    if (savedStringSet != null) {
        list = new ArrayList<>(savedStringSet);
    }

    dataAdapter = new ArrayAdapter<String>(Spinner.this, android.R.layout.simple_spinner_item, list.toArray(new String[list.size()]));
    dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
    spinner.setAdapter(dataAdapter);
    spinner.setPrompt("SELECT AN ITEM");
    spinner.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {

        @Override
        public void onItemSelected(AdapterView<?> adapter, View v,
                                   int position, long id) {



        }

        @Override
        public void onNothingSelected(AdapterView<?> arg0) {


        }
    });

    Bundle extras = getIntent().getExtras();
    if (extras != null) {
        String value = extras.getString("send_data");
        list.add(value);
        dataAdapter = new ArrayAdapter<String>(Spinner.this, android.R.layout.simple_spinner_item, list);
        dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner.setAdapter(dataAdapter);
    }
}
@Override
protected void onDestroy() {
    super.onDestroy();
    SharedPreferences.Editor editor = sharedPref.edit();
    editor.putStringSet("SpinnerData", new HashSet<String>(list));
    editor.apply();
}

Error:

   java.lang.NullPointerException
                                                                                 at android.widget.ArrayAdapter.createViewFromResource(ArrayAdapter.java:394)
                                                                              at android.widget.ArrayAdapter.getView(ArrayAdapter.java:362)
                                                                              at android.widget.AbsSpinner.onMeasure(AbsSpinner.java:193)
                                                                              at android.widget.Spinner.onMeasure(Spinner.java:429)
                                                                              at android.view.View.measure(View.java:15172)
                                                                              at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:617)
                                                                              at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:399)
                                                                              at android.view.View.measure(View.java:15172)
                                                                              at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4814)
                                                                              at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
                                                                              at android.view.View.measure(View.java:15172)
                                                                              at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4814)
                                                                              at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1390)
                                                                              at android.widget.LinearLayout.measureVertical(LinearLayout.java:681)
                                                                              at android.widget.LinearLayout.onMeasure(LinearLayout.java:574)
                                                                              at android.view.View.measure(View.java:15172)
                                                                              at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4814)
                                                                              at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
                                                                              at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2148)
                                                                              at android.view.View.measure(View.java:15172)
                                                                              at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1848)
                                                                              at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1100)
                                                                              at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1273)
                                                                              at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:998)
                                                                              at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4212)
                                                                              at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
                                                                              at android.view.Choreographer.doCallbacks(Choreographer.java:555)
                                                                              at android.view.Choreographer.doFrame(Choreographer.java:525)
                                                                              at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
                                                                              at android.os.Handler.handleCallback(Handler.java:615)
                                                                              at android.os.Handler.dispatchMessage(Handler.java:92)
                                                                              at android.os.Looper.loop(Looper.java:137)
                                                                              at android.app.ActivityThread.main(ActivityThread.java:4745)
                                                                              at java.lang.reflect.Method.invokeNative(Native Method)
                                                                              at java.lang.reflect.Method.invoke(Method.java:511)
                                                                              at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
                                                                              at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
                                                                              at dalvik.system.NativeStart.main(Native Method)

some infos needed: You want to use SQLite? You want to make infos available all over the app? You have any preference on how to store datas? only for one use or for next use also? — Pier Giorgio Misley, Sep 20 '16 at 15:35
i dont need sqlite n all..i want it for one use only like through bundle n all — Badprince, Sep 20 '16 at 15:38
Done a sample in the code below, not exactly a copy-paste code but you have all you need :) — Pier Giorgio Misley, Sep 20 '16 at 15:44

score 1 · Answer 1 · edited Sep 23 '17 at 04:26

1

First part is taking back a result from the 2nd activity to the 1st activity.

For this I took this SO answer. You can read it below.

From your FirstActivity call the SecondActivity using startActivityForResult() method

For example:
Intent i = new Intent(this, SecondActivity.class);
startActivityForResult(i, 1);
In your SecondActivity set the data which you want to return back to FirstActivity. If you don't want to return back, don't set any.

For example: In secondActivity if you want to send back data:
Intent returnIntent = new Intent();
returnIntent.putExtra("result",result);
setResult(Activity.RESULT_OK,returnIntent);
finish();
If you don't want to return data:
Intent returnIntent = new Intent();
setResult(Activity.RESULT_CANCELED, returnIntent);
finish();
Now in your FirstActivity class write following code for the onActivityResult() method.
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {

    if (requestCode == 1) {
        if(resultCode == Activity.RESULT_OK){
            String result=data.getStringExtra("result");
        }
        if (resultCode == Activity.RESULT_CANCELED) {
            //Write your code if there's no result
        }
    }
}//onActivityResult

The second part is done by passing this data from the first activity to the 3rd activity.

You can do this by doing the following:

Intent intent = new Intent(getBaseContext(), ThirdActivity.class);
intent .putExtra("key",result);
startActivity(intent);

And in the 3rd activity you can use:

Bundle extras = getIntent().getExtras();
if (extras != null) {
    String value = extras.getString("key");
    //The key argument here must match that used in the other activity
}

Hope this helps

edited Sep 23 '17 at 04:26

Graham

7,431
18
59
84

answered Sep 20 '16 at 15:43

Pier Giorgio Misley

5,305
4
27
66

Intent intent = new Intent(getBaseContext(), ThirdActivity.class); intent .putExtra("key",result); – Badprince Sep 20 '16 at 15:54
@Badprince as i wrote, it's not a "ready to use" solution. have a look at some samples on the internet and try yourself. we don't have your code neither your log, so try looking on google and investigate so you can find solution yourself – Pier Giorgio Misley Sep 20 '16 at 15:57
@Badprince if there is any error in the code please notify me. I don't have a compiler now so it might be not perfect – Pier Giorgio Misley Sep 20 '16 at 15:59
the application crashes when i click 2 button – Badprince Sep 20 '16 at 16:13
see my edited question i posted my code hope get a help from you i am stuck in this from 2 to 3 days :) – Badprince Sep 20 '16 at 17:12
@Badprince need 2 infos: 1) which is the 2 button? 2) can you add in your question the stacktrace? (it's the detailed error) – Pier Giorgio Misley Sep 21 '16 at 07:41
I edited my question and posted the error please look out:) – Badprince Sep 21 '16 at 09:49
@Badprince thanks, one last information: can you debug your code checking wich line exactly throws the error? is it the adapter creation or the "setAdapter" or something else? – Pier Giorgio Misley Sep 21 '16 at 10:01
@Badprince wait, in the last setAdapter, under the if check, you are passing a list instead of an array. fix this and should work! – Pier Giorgio Misley Sep 21 '16 at 10:02
Bro list is a object name of a arraylist above i have created in that array object i have pass the bundle object that's y list is there in the last – Badprince Sep 21 '16 at 13:47
@Badprince list and arraylist are pretty much the same. try converting this arraylist into an array and see if it works, btw i repeat: post the line throwing the error pls – Pier Giorgio Misley Sep 21 '16 at 13:51
its not specifying any line which is throwing error – Badprince Sep 21 '16 at 14:14
i got the following error thats it i have a code which work great in single activity like both spinner and editfield in same activity its work great but while i am trying to separate it this happen – Badprince Sep 21 '16 at 14:15
@Badprince you can find the line with debugging. you put a breakpoint in the first line of oncreate and you step row by row. one will throw an error, no? – Pier Giorgio Misley Sep 21 '16 at 14:18
@Badprince nullpointer, maybe i got it: check if "send_data" is null. you never check it and it's not sure it is not null – Pier Giorgio Misley Sep 21 '16 at 14:20
i did same problem..:( – Badprince Sep 21 '16 at 14:40
@Badprince unfortunatly if you want more help, you have to provide us the line throwing the error – Pier Giorgio Misley Sep 21 '16 at 14:43
you dont have a compiler or what ? – Badprince Sep 21 '16 at 14:45
@Badprince 1) I don't have a compiler 2) even if I have be sure i wouldn't create a project with all your pages and controllers only to do something you are too lazy to do – Pier Giorgio Misley Sep 21 '16 at 14:47

score 0 · Answer 2 · answered Sep 20 '16 at 15:34

0

You can finish your second activity passing edittext data to first activity with onActivityResult. Then you can launch your third activity passing your edittext data to it. Then in your third activity you can populate dinamically your spinner data.

If i can suggest you, spinner is an old api, let's use something better as a list in a dialogfragment

answered Sep 20 '16 at 15:34

firegloves

5,581
2
29
50

can u elobrate properly i am a newbiee :) – Badprince Sep 20 '16 at 15:36

how to transfer data from edittext to spinner both are in different activity

2 Answers2