CODEWITHSUNDEEP
androidandroid-arrayadapter
Onochie F
Onochie F

Reputation: 1

Android:Why do I get adapter unresolved?

I'm a newbie to android programming.Pls can anybody explain why I get 'adapter' unresolved in the emphasized part of my code.My programs parent actvity first adds some data to an arraylist which is converted to a string array and displayed using a listview. On the click of a button, it starts a secondary activity that returns a string which is added to the arraylist and the new data should be updated on the display.whenever I put the "adapter.notifyDataSetChanged();" I get the message "adapter" unresolved.Can anyone explain why or what I can do to resolve it.See code thank you.

import java.util.ArrayList;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;

public class ShitActivity extends Activity {

ArrayList<String> arrlist=new ArrayList<String>();
private static final int REQUEST_CODE=1;


/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    ListView list=(ListView)findViewById(R.id.list);


   arrlist.add("android");
   arrlist.add("android");
   arrlist.add("iphone");
   arrlist.add("android");
   arrlist.add("Blackberry");
   arrlist.add("webos");
setButtonClickListener();
   String[] arr=arrlist.toArray(new String[arrlist.size()]);
    ArrayAdapter<String> adapter=new ArrayAdapter<String>     (this,R.layout.list_item,R.id.test1,arr);

    list.setAdapter(adapter);


}

private void setButtonClickListener(){
    Button Read1=(Button)findViewById(R.id.Read1);
Read1.setOnClickListener(new View.OnClickListener() {

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        Intent i = new Intent (ShitActivity.this,Deliverstring.class);
        startActivityForResult(i,REQUEST_CODE);
    }
});
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data){
super.onActivityResult(requestCode, resultCode, data);
    if(resultCode==RESULT_OK && requestCode==REQUEST_CODE){
    String in1=data.getStringExtra("datareturn");
    arrlist.add(in1);
    ***adapter.notifyDataSetChanged();***
}
}}

Upvotes: 0

Views: 837

Answers (1)

William Melani
William Melani

Reputation: 4268

You are declaring your adapter in onCreate. Put it outside of a function so it can be used elsewhere.

private ArrayAdapter<String> adapter;

in onCreate

 adapter=new ArrayAdapter<String>     (this,R.layout.list_item,R.id.test1,arr);

Upvotes: 1

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