ohmlok: How to pass an arraylist value from one activity to another in android?

Saturday, May 10, 2014

How to pass an arraylist value from one activity to another in android?

1) First Activity

import java.util.ArrayList;

import android.app.Activity;

import android.content.Intent;

import android.os.Bundle;

import android.view.View;

import android.view.View.OnClickListener;

public class MainActivity extends Activity {

public static final String TAG="tag";

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        final ArrayList<String> mArray = new ArrayList<String>();

        mArray.add("orange");

        mArray.add("apple");

        findViewById(R.id.button1).setOnClickListener(new OnClickListener() {

            @Override

            public void onClick(View v) {

                Intent intent = new Intent(MainActivity.this, Second.class);

                intent.putExtra(TAG, mArray);

                startActivity(intent);

            }

        });

    }

}

2) Second Activity

import java.util.ArrayList;

import android.app.Activity;

import android.os.Bundle;

public class SecondActivity extends Activity {

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.second_activity);

        Bundle b = getIntent().getExtras();

        if(b!=null){

            ArrayList<String> mArray = (ArrayList<String>)b.getStringArrayList(MainActivity.TAG);

            System.out.println(mArray);

        }    

    }

}