Android Open Source - android-content-provider-sample People Activity

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License

The source code is released under:

Copyright (c) 2013 Keith Platfoot Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Sof...

Java Source Code

package com.example.people;
//w  w w .j  a va 2s .c  o  m
import android.content.ContentUris;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.LoaderManager;
import android.support.v4.content.CursorLoader;
import android.support.v4.content.Loader;
import android.support.v4.widget.SimpleCursorAdapter;
import android.view.ContextMenu;
import android.view.ContextMenu.ContextMenuInfo;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.AdapterContextMenuInfo;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ListView;

public class PeopleActivity extends FragmentActivity implements
    LoaderManager.LoaderCallbacks<Cursor>, OnItemClickListener {

  private static final int PEOPLE_LOADER_ID = 0;

  private ListView mListView;
  private SimpleCursorAdapter mAdapter;

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

    mListView = (ListView) findViewById(android.R.id.list);
    mListView.setOnItemClickListener(this);
    registerForContextMenu(mListView);

    String[] fromColumns = {
        Person.Columns.FIRST, Person.Columns.LAST
    };
    int[] toViews = {
        android.R.id.text1, android.R.id.text2
    };

    // Create an empty adapter we will use to display the loaded data.
    // We pass null for the cursor, then update it in onLoadFinished()
    mAdapter = new SimpleCursorAdapter(this, android.R.layout.simple_list_item_2, null,
        fromColumns, toViews, 0);
    mListView.setAdapter(mAdapter);

    getSupportLoaderManager().initLoader(PEOPLE_LOADER_ID, null, this);
  }

  @Override
  public Loader<Cursor> onCreateLoader(int id, Bundle args) {
    switch (id) {
      case PEOPLE_LOADER_ID:
        return new CursorLoader(this, Person.PEOPLE_URI, Person.Columns.ALL, null, null, null);
      default:
        return null;
    }
  }

  @Override
  public void onLoadFinished(Loader<Cursor> loader, Cursor data) {
    mAdapter.swapCursor(data);
  }

  @Override
  public void onLoaderReset(Loader<Cursor> loader) {
    mAdapter.swapCursor(null);
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    getMenuInflater().inflate(R.menu.people, menu);
    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    if (item.getItemId() == R.id.menu_new) {
      newPerson();
      return true;
    }
    return false;
  }

  private void newPerson() {
    Intent intent = new Intent(this, EditPersonActivity.class);
    intent.setAction(Intent.ACTION_INSERT);
    intent.setData(Person.PEOPLE_URI);
    startActivity(intent);
  }

  @Override
  public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
    editPerson(id);
  }

  private void editPerson(long id) {
    Intent intent = new Intent(this, EditPersonActivity.class);
    intent.setAction(Intent.ACTION_EDIT);
    intent.setData(ContentUris.withAppendedId(Person.PEOPLE_ID_URI_BASE, id));
    startActivity(intent);
  }

  @Override
  public void onCreateContextMenu(ContextMenu menu, View v, ContextMenuInfo menuInfo) {
    AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) menuInfo;
    Person person = new Person((Cursor) mListView.getItemAtPosition(info.position));
    menu.setHeaderTitle(person.first + " " + person.last);
    getMenuInflater().inflate(R.menu.people_context, menu);
  }

  @Override
  public boolean onContextItemSelected(MenuItem item) {
    AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) item.getMenuInfo();
    if (item.getItemId() == R.id.menu_delete) {
      deletePerson(info.id);
      return true;
    }
    return false;
  }

  private void deletePerson(long id) {
    Uri uri = ContentUris.withAppendedId(Person.PEOPLE_ID_URI_BASE, id);
    getContentResolver().delete(uri, null, null);
  }
}

Java Source Code List

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