Question

Hi, I am trying to create a simple android app using spinners. It need not be very complex. The app should allow the user to use a simple spinner to select a team from the following list of teams (Kansas City Chiefs, New England Patriots, New Orleans Saints, and the Los Angeles Rams), once the user selects the team they wish to view, the app should display a small paragraph of information (hardcoded) To the screen for the user to read, as well as the record for the team (may also be hardcoded into the app)

The only real hurdle is that the app must have 2 activities. The first activity must pass the name of the team that was selected to the second activity and the second activity must pass the hardcoded information back to the first activity to display to the screen.

Again, this app need not be complex. The simpler the better, as long as it accomplishes all the tasks I mentioned.

Answer 1

// MainActivity

package info.pvs.test;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.TextView;
import android.widget.Toast;

import java.util.ArrayList;
import java.util.List;

public class MainActivity extends AppCompatActivity implements AdapterView.OnItemSelectedListener {
    TextView show_team_data;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        Spinner spinner = (Spinner) findViewById(R.id.spinner);
        show_team_data = (TextView) findViewById(R.id.textView2);
        spinner.setOnItemSelectedListener(this);
        List<String> teams = new ArrayList<String>();
        teams.add("");
        teams.add("Kansas City Chiefs");
        teams.add("New England Patriots");
        teams.add("New Orleans Saints");
        teams.add("Los Angeles Rams");
        ArrayAdapter<String> dataAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_spinner_item, teams);
        dataAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);
        spinner.setAdapter(dataAdapter);
        getIntent();

    }

    @Override
    public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
        String text_to_show = "";
        String item = parent.getItemAtPosition(position).toString();
        if (position == 0) {
            Toast.makeText(this, "Please select Team", Toast.LENGTH_SHORT).show();
        } else {
            Intent intent = new Intent(getBaseContext(), SecondActivity.class);
            intent.putExtra("item", item);
            startActivity(intent);
        }
    }

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

    }


    @Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        if(requestCode==1)
        {
            String message=data.getStringExtra("team_data");
            show_team_data.setText(message);
        }
    }
}

// SecondActivity

package info.pvs.test;

import android.content.Intent;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import android.widget.Toast;

public class SecondActivity extends AppCompatActivity {
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        String item = getIntent().getStringExtra("item");
        System.out.println("=============================================="+item);
        String text_to_show = "";
        if (item.equals("Kansas City Chiefs")) {
            text_to_show = "The Kansas City Chiefs are a professional American football team based in Kansas City, Missouri. The Chiefs compete in the National Football League as a member club of the league's American Football Conference West division.";
        } else if (item.equals("New England Patriots")) {
            text_to_show = "The New England Patriots are a professional American football team based in the Greater Boston region. The Patriots compete in the National Football League as a member club of the league's American Football Conference East division.";
        } else if (item.equals("New Orleans Saints")) {
            text_to_show = "The New Orleans Saints are a professional American football team based in New Orleans, Louisiana. The Saints currently compete in the National Football League as a member of the league's National Football Conference South division.";
        } else if (item.equals("Los Angeles Rams")) {
            text_to_show = "The Los Angeles Rams are a professional American football team based in Los Angeles, California, which competes in the National Football League's NFC West division. The franchise has won three NFL championships, and is the only one to win championships representing three different cities.";
        }
        System.out.println("=============================================="+text_to_show);
        Intent intent = new Intent();
        intent.putExtra("team_data", text_to_show);
        setResult(RESULT_OK, intent);
        finish();

    }
}
 

//activity_main

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <Spinner
        android:id="@+id/spinner"
        android:layout_width="216dp"
        android:layout_height="wrap_content"
        android:layout_alignParentStart="true"
        android:layout_alignParentTop="true"
        android:layout_marginStart="62dp"
        android:layout_marginTop="67dp"
        />

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentStart="true"
        android:layout_alignParentTop="true"
        android:layout_marginStart="69dp"
        android:layout_marginTop="35dp"
        android:text="Select a team" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_alignStart="@+id/textView"
        android:layout_marginTop="231dp"
        android:text="" />

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentStart="true"
        android:layout_alignParentTop="true"
        android:layout_marginStart="55dp"
        android:layout_marginTop="192dp"
        android:text="Team Info" />
</RelativeLayout>