Android Open Source - android-protobuf-example Person Activity

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License

The source code is released under:

Apache License

Java Source Code

package com.example.android;
//from  w w  w  .j  ava2 s  .c  om
import java.util.List;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.RadioGroup;
import android.widget.TextView;

import com.example.protobuf.R;
import com.example.tutorial.AddressBookProtos.Person;
import com.example.tutorial.AddressBookProtos.Person.PhoneNumber;
import com.example.tutorial.AddressBookProtos.Person.PhoneType;
import com.google.protobuf.InvalidProtocolBufferException;

public class PersonActivity extends Activity {

  public static final String PERSON_MSG_EXTRA = "person_msg_extra";
  public static final String PERSON_INDEX_EXTRA = "person_index_extra";
  public static final int NEW_PERSON_INDEX = -1;

  private Person.Builder person;
  private int personIndex = NEW_PERSON_INDEX;

  EditText editName;
  EditText editEmail;
  ListView phones;
  
  ListAdapter adapter;

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

    // setup view references
    editName = (EditText) findViewById(R.id.edit_name);
    editEmail = (EditText) findViewById(R.id.edit_email);
    phones = (ListView) findViewById(R.id.list_phone);

    // read the serialized person from the intent extras
    Bundle b = getIntent().getExtras();
    if (b != null) {
      byte[] msg = b.getByteArray(PERSON_MSG_EXTRA);
      try {
        person = Person.parseFrom(msg).toBuilder();
        personIndex = b.getInt(PERSON_INDEX_EXTRA);
      } catch (InvalidProtocolBufferException e) {
        e.printStackTrace();
        person = Person.newBuilder();
      }
    } else {
      person = Person.newBuilder();
    }

    // set defaults if we are editing an existing person 
    if (person.isInitialized()) {
      editName.setText(person.getName());
      editEmail.setText(person.getEmail());
      
      adapter = new PhoneNumberAdapter(this, person.getPhoneList());
      phones.setAdapter(adapter);
    }

  }

  public void onSaveClick(View v) {

    if (personIndex == NEW_PERSON_INDEX) {
      // we need a unique id for a new person object, obviously this isn't
      person.setId((int) System.currentTimeMillis());
    }

    // update and build the person object
    person.setName(editName.getText().toString());
    person.setEmail(editEmail.getText().toString());

    Person p = person.build();

    // serialize and pass back the person object to the calling activity
    Intent intent = new Intent();
    Bundle b = new Bundle();
    b.putByteArray(PERSON_MSG_EXTRA, p.toByteArray());
    b.putInt(PERSON_INDEX_EXTRA, personIndex);
    intent.putExtras(b);
    setResult(RESULT_OK, intent);
    finish();

  }
  
  public void onAddClick(View v) {

    // launch phone number entry dialog
    LayoutInflater factory = LayoutInflater.from(this);
    final View layoutView = factory.inflate(R.layout.phone_number, null);

    final EditText number = (EditText) layoutView.findViewById(R.id.edit_number);
    final RadioGroup ptype = (RadioGroup) layoutView.findViewById(R.id.radioGroup_type);

    new AlertDialog.Builder(PersonActivity.this)
    .setTitle("Phone Number")
    .setView(layoutView)
    .setPositiveButton("OK", new DialogInterface.OnClickListener() {
      public void onClick(DialogInterface dialog, int whichButton) {

        // create a new phonenumber
        PhoneNumber.Builder phoneNumber = PhoneNumber.newBuilder();
        phoneNumber.setNumber(number.getText().toString());
        PhoneType type = null;
        switch (ptype.getCheckedRadioButtonId()) {
        case R.id.radio0:
          type = PhoneType.MOBILE;
          break;
        case R.id.radio1:
          type = PhoneType.HOME;
          break;
        case R.id.radio2:
          type = PhoneType.WORK;
          break;
        }
        phoneNumber.setType(type);
        
        // add the new number to our person
        person.addPhone(phoneNumber.build());
        
        // reload adapter
        adapter = new PhoneNumberAdapter(PersonActivity.this, person.getPhoneList());
        phones.setAdapter(adapter);

      }
    })
    .setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
      public void onClick(DialogInterface dialog, int whichButton) {}
    })
    .create().show();

  }
  
  private static class PhoneNumberAdapter extends ArrayAdapter<PhoneNumber> {

    private LayoutInflater mInflater;
    private List<PhoneNumber> mObjects;

    public PhoneNumberAdapter(Context context, List<PhoneNumber> objects) {
      super(context, 0, objects);
      mInflater = LayoutInflater.from(context);
      mObjects = objects;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {

      // standard view holder pattern boilerplate
      ViewHolder holder;
      if (convertView == null) {
        convertView = mInflater.inflate(android.R.layout.simple_list_item_2, null);
        holder = new ViewHolder();
        holder.number = (TextView) convertView.findViewById(android.R.id.text1);
        holder.type = (TextView) convertView.findViewById(android.R.id.text2);
        convertView.setTag(holder);
      } else {
        holder = (ViewHolder) convertView.getTag();
      }

      // map PhoneNumber fields to corresponding textviews
      PhoneNumber phone = mObjects.get(position);
      holder.number.setText(phone.getNumber());
      holder.type.setText(phone.getType().toString());

      return convertView;
    }

    static class ViewHolder {
      TextView number;
      TextView type;
    }

  }

}

Java Source Code List

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