When clicked on grid view how to send arralist(position) to another actvity

Question

In this method I am receiving the ArrayList

        OkHttpHandler handler = new OkHttpHandler(MainActivity.this,new OkHttpHandler.MyInterface() {
           


        

Answer 1

//Make constant class and add all data in this arraylist:
//e.g : Constant.arrylist.add(<collection>);
public class Constant{
public static ArrayList<collection>() arrylist = new ArrayList<collection>()
}

//Pass arraylist data
Intent intent = new Intent(this,YourActivity.class);
intent.putInt("position", arrylist.get(position));
startActivity(intent);

//Get position in another activity
Bundle bundle = getIntent().getExtras();
int position = bundle.getInt("position",0);

//Now get Particular data 
//e.g
String url = Constant.arrylist.get(position).<url(collection)>;
//And so on..!

Answer 2

Please refer to my following sample code for sending an arraylist to another activity, then you can use its logic to your app. Hope this helps!

First of all, you need a class that implements Parcelable

public class Person implements Parcelable {
    int id;
    String name;
    int age;

    Person (Parcel in){
        this.id = in.readInt();
        this.name = in.readString();
        this.age = in.readInt();
    }

    Person(int id, String name, int age) {
        this.id = id;
        this.name = name;
        this.age = age;
    }

    @Override
    public int describeContents() {
        return 0;
    }

    @Override
    public void writeToParcel(Parcel dest, int flags) {
        dest.writeInt(this.id);
        dest.writeString(this.name);
        dest.writeInt(this.age);
    }

    public static final Parcelable.Creator<Person> CREATOR = new Parcelable.Creator<Person>() {
        public Person createFromParcel(Parcel in) {
            return new Person(in);
        }

        public Person[] newArray(int size) {
            return new Person[size];
        }
    };
}

Then in MainActivity:

public class MainActivity extends AppCompatActivity {

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

        ArrayList<Person> personArrayList = new ArrayList<>();
        personArrayList.add(new Person(1, "Person A", 20));
        personArrayList.add(new Person(2, "Person B", 30));
        personArrayList.add(new Person(3, "Person C", 40));

        Intent intent = new Intent(this,PersonsActivity.class);
        intent.putExtra("Person_List", personArrayList);
        startActivity(intent);
    }
}

The PersonsActivity:

public class PersonsActivity extends AppCompatActivity {

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

        Bundle bundle = getIntent().getExtras();

        ArrayList<Person> personArrayList = bundle.getParcelableArrayList("Person_List");

        if (personArrayList != null && !personArrayList.isEmpty()) {
            for (Person person : personArrayList) {
                Log.i("PersonsActivity", String.valueOf(person.id) + " | " + person.name + " | " + String.valueOf(person.age));
            }
        }
    }
}

You will get the following logcat:

11-23 15:40:37.107 4051-4051/? I/PersonsActivity: 1 | Person A | 20
11-23 15:40:37.107 4051-4051/? I/PersonsActivity: 2 | Person B | 30
11-23 15:40:37.107 4051-4051/? I/PersonsActivity: 3 | Person C | 40

Answer 3

You can do this using following way

You can set position of a grid item(here image) you click as a tag to imageview and then you can get the json object or single object from array list using above position and can send to another activity.

holder.imageView.SetTag(position)
holder.imageView.setOnClickListener(new View.OnClickListener() {

    @Override
    public void onClick(View v) {
        // TODO Auto-generated method stub
        //Get your imageview here by using v.findviewbyid and get tag tag 
        //Like this
        //ImageView iv=(ImageView)v.findviewbyid(id of layout you mention to bind holder.imageView) 
         //Integer mPosition=(Integer)iv.getTag();
         //Then fetch that single object by using mPosition from your list and pass it  
        //JSONObject item = peoples.getJSONObject(mPosition);
        Log.d("OnImageButton", "Clicked");
        Intent intnt  =new Intent(mcontext, SingleViewActivity.class);
        //intnt.putExtra("Contact_list", item);
        mcontext.startActivity(intnt)  ; //This line raises error
        Toast.makeText(mcontext, "intent",
            Toast.LENGTH_LONG).show();
    }
});