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Code Issues Releases Wiki Activity

Added functionality to save and display tweets to an SQLite DB.

Browse Source 
TODO: Add retweeted field to DB, make fix SavedNewsActivity display.
This commit is contained in:
tokugawa 2014-04-14 00:42:55 -04:00
parent dddab46731
commit 4e4abc99e2
17 changed files with 590 additions and 4 deletions
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4
HW5/AndroidManifest.xml
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@ -32,6 +32,10 @@
android:name="edu.uncc.itcs4180.hw5.DetailedTweetActivity"
android:label="@string/title_activity_detailed_tweet" >
</activity>
<activity
android:name="edu.uncc.itcs4180.hw5.SavedNewsActivity"
android:label="@string/title_activity_saved_news" >
</activity>
</application>
</manifest>

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HW5/libs/android-support-v4.jar
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1
HW5/project.properties
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@ -12,3 +12,4 @@
# Project target.
target=android-19
android.library.reference.1=../../../workspace/appcompat_v7_5

18
HW5/res/layout/activity_saved_news.xml Normal file
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@ -0,0 +1,18 @@
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="edu.uncc.itcs4180.hw5.SavedNewsActivity"
tools:ignore="MergeRootFrame" >
<ListView
android:id="@+id/listTweetList"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true" >
</ListView>
</RelativeLayout>

55
HW5/res/layout/saved_tweets_list.xml Normal file
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@ -0,0 +1,55 @@
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/RelativeLayout1"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:descendantFocusability="blocksDescendants"
android:padding="2dp" >
<ImageView
android:id="@+id/imgProfileImage"
android:layout_width="60dp"
android:layout_height="60dp"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:padding="5dp"
android:src="@drawable/ic_launcher" />
<TextView
android:id="@+id/txtTweetText"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_toRightOf="@+id/imgProfileImage"
android:padding="5dp"
android:text="TextView" />
<TextView
android:id="@+id/txtTweetInfo"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="@+id/txtTweetText"
android:layout_below="@+id/txtTweetText"
android:layout_toLeftOf="@+id/imgIsRetweet"
android:padding="5dp"
android:text="TextView" />
<ImageButton
android:id="@+id/ibtnSaveTweet"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_alignParentRight="true"
android:layout_below="@+id/txtTweetText"
android:padding="5dp"
android:visibility="invisible" />
<ImageView
android:id="@+id/imgIsRetweet"
android:layout_width="50dp"
android:layout_height="50dp"
android:layout_alignTop="@+id/ibtnSaveTweet"
android:layout_toLeftOf="@+id/ibtnSaveTweet"
android:padding="5dp"
android:src="@drawable/not_retweeted" />
</RelativeLayout>

12
HW5/res/menu/saved_news.xml Normal file
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@ -0,0 +1,12 @@
<menu 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"
tools:context="edu.uncc.itcs4180.hw5.SavedNewsActivity" >
<item
android:id="@+id/action_settings"
android:orderInCategory="100"
android:title="@string/action_settings"
app:showAsAction="never"/>
</menu>

10
HW5/res/values-w820dp/dimens.xml Normal file
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@ -0,0 +1,10 @@
<resources>
<!--
Example customization of dimensions originally defined in res/values/dimens.xml
(such as screen margins) for screens with more than 820dp of available width. This
would include 7" and 10" devices in landscape (~960dp and ~1280dp respectively).
-->
<dimen name="activity_horizontal_margin">64dp</dimen>
</resources>

1
HW5/res/values/strings.xml
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@ -6,5 +6,6 @@
<string name="hello_world">Hello world!</string>
<string name="title_activity_tweets_list">TweetsListActivity</string>
<string name="title_activity_detailed_tweet">DetailedTweetActivity</string>
<string name="title_activity_saved_news">SavedNewsActivity</string>
</resources>

25
HW5/src/edu/uncc/itcs4180/hw5/MainActivity.java
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@ -3,8 +3,11 @@ package edu.uncc.itcs4180.hw5;
import java.util.Collections;
import java.util.HashMap;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;
import edu.uncc.itcs4180.hw5.database.DataManager;
import edu.uncc.itcs4180.hw5.database.SavedTweet;
import edu.uncc.itcs4180.hw5.twitter.TweetList;
import edu.uncc.itcs4180.hw5.twitter.TwitterClient;
import android.os.Bundle;
@ -26,6 +29,8 @@ public class MainActivity extends Activity {
private static final Map<String, String> newsSites;
private static final String[] newsSitesTitles;
private static DataManager dm;
static {
Map<String, String> mMap = new LinkedHashMap<String, String>();
// Put news sites here
@ -42,6 +47,8 @@ public class MainActivity extends Activity {
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
dm = new DataManager(this);
dm.saveTweet(new SavedTweet(0, "apple", "Stuff about an apple", "00:00:12", ""));
// Set up all the news feeds
ListView feeds = (ListView)findViewById(R.id.listNewsFeeds);
@ -70,12 +77,26 @@ public class MainActivity extends Activity {
}
public void onViewSaved(View v) {
SavedTweet t = dm.getTweet(1);
if(t!=null)
{
Intent i = new Intent(MainActivity.this, SavedNewsActivity.class);
startActivity(i);
}
else
{
Toast.makeText(this, "No saved tweets to view", Toast.LENGTH_SHORT).show();
}
}
public void onClearSaved(View v) {
// TODO: Implement the database clearing functionality here.
dm.deleteAll();
Toast.makeText(this, "All Saved News are Cleared!", Toast.LENGTH_SHORT).show();
}
protected void onDestroy()
{
dm.close();
super.onDestroy();
}
}

58
HW5/src/edu/uncc/itcs4180/hw5/SavedNewsActivity.java Normal file
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@ -0,0 +1,58 @@
package edu.uncc.itcs4180.hw5;
import java.util.List;
import edu.uncc.itcs4180.hw5.database.DataManager;
import edu.uncc.itcs4180.hw5.database.SavedTweet;
import edu.uncc.itcs4180.hw5.twitter.Tweet;
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ListAdapter;
import android.widget.ListView;
public class SavedNewsActivity extends Activity {
private List<SavedTweet> tweets;
private DataManager dm;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_saved_news);
dm = new DataManager(this);
tweets = dm.getAllTweets();
ListView lv = (ListView)findViewById(R.id.listTweetList);
ListAdapter la = new SavedNewsAdapter(this, tweets.toArray(new SavedTweet[tweets.size()]));
lv.setAdapter(la);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.saved_news, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
protected void onDestroy()
{
dm.close();
super.onDestroy();
}
}

65
HW5/src/edu/uncc/itcs4180/hw5/SavedNewsAdapter.java Normal file
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@ -0,0 +1,65 @@
package edu.uncc.itcs4180.hw5;
import edu.uncc.itcs4180.hw5.database.SavedTweet;
import android.app.Activity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.TextView;
public class SavedNewsAdapter extends ArrayAdapter<SavedTweet>
{
private final int TWEET_TAG_KEY = 1337;
Activity activity;
SavedTweet[] tweets;
public SavedNewsAdapter(Activity activity, SavedTweet[] tweets) {
super(activity, R.layout.saved_tweets_list, tweets);
this.tweets = tweets;
this.activity = activity;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View rowView = convertView;
TweetView tv = null;
SavedTweet tweet = tweets[position];
if (rowView == null) {
// Inflate a new row
rowView = activity.getLayoutInflater().inflate(R.layout.tweet_list, null);
tv = new TweetView();
tv.imgProfileImage = (ImageView) rowView.findViewById(R.id.imgProfileImage);
tv.txtTweetText = (TextView) rowView.findViewById(R.id.txtTweetText);
tv.txtTweetInfo = (TextView) rowView.findViewById(R.id.txtTweetInfo);
tv.imgIsRetweet = (ImageView) rowView.findViewById(R.id.imgIsRetweet);
rowView.setTag(tv);
rowView.setTag(R.id.TWEET_TAG_KEY, tweet);
} else {
tv = (TweetView) rowView.getTag();
}
// Add information to the current row
// Start up our BitmapDownloader - it will update the ImageView for us
new BitmapDownloader(tv.imgProfileImage).execute(tweet.getProfileImageUrl());
tv.txtTweetText.setText(tweet.getText());
tv.txtTweetInfo.setText(tweet.getTime());
// Set the retweet image
//if (tweet.isRetweet()) {
tv.imgIsRetweet.setImageDrawable(activity.getResources().getDrawable(R.drawable.retweeted));
//}
return rowView;
}
protected static class TweetView {
ImageView imgProfileImage;
TextView txtTweetText;
TextView txtTweetInfo;
ImageView imgIsRetweet;
}
}

14
HW5/src/edu/uncc/itcs4180/hw5/TweetListAdapter.java
View File

@ -7,6 +7,8 @@ import java.net.URL;
import org.apache.http.HttpConnection;
import edu.uncc.itcs4180.hw5.database.DataManager;
import edu.uncc.itcs4180.hw5.database.SavedTweet;
import edu.uncc.itcs4180.hw5.twitter.Tweet;
import android.app.Activity;
import android.content.Context;
@ -24,11 +26,13 @@ public class TweetListAdapter extends ArrayAdapter<Tweet> {
private final int TWEET_TAG_KEY = 1337;
Activity activity;
Tweet[] tweets;
private static DataManager dm;
public TweetListAdapter(Activity activity, Tweet[] tweets) {
super(activity, R.layout.tweet_list, tweets);
this.tweets = tweets;
this.activity = activity;
dm = new DataManager(activity.getBaseContext());
}
@Override
@ -64,10 +68,11 @@ public class TweetListAdapter extends ArrayAdapter<Tweet> {
tv.imgIsRetweet.setImageDrawable(activity.getResources().getDrawable(R.drawable.retweeted));
}
// Save tweets when we are clicked
tv.ibtnSaveTweet.setTag(tweet);
tv.ibtnSaveTweet.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
saveTweet((Tweet)v.getTag(TWEET_TAG_KEY));
saveTweet((Tweet)v.getTag());
}
});
@ -83,7 +88,12 @@ public class TweetListAdapter extends ArrayAdapter<Tweet> {
}
private void saveTweet(Tweet t) {
// TODO: Save tweets here.
SavedTweet save = new SavedTweet();
save.setUsername(t.getUser().getName());
save.setText(t.getText());
save.setTime(t.getDateCreated());
save.setProfileImageUrl(t.getUser().getProfileImageUrl());
dm.saveTweet(save);
Toast.makeText(activity, "Saved in DB!", Toast.LENGTH_SHORT).show();
}

57
HW5/src/edu/uncc/itcs4180/hw5/database/DataManager.java Normal file
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@ -0,0 +1,57 @@
package edu.uncc.itcs4180.hw5.database;
import java.util.List;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
public class DataManager
{
Context mContext;
DatabaseHelper dbOpenHelper;
SQLiteDatabase db;
SavedTweetDAO tweetDao;
public DataManager(Context mContext)
{
this.mContext = mContext;
dbOpenHelper = new DatabaseHelper(mContext);
db = dbOpenHelper.getWritableDatabase();
tweetDao = new SavedTweetDAO(db);
}
public void close()
{
db.close();
}
public long saveTweet(SavedTweet tweet)
{
return tweetDao.save(tweet);
}
public boolean updateTweet(SavedTweet tweet)
{
return tweetDao.update(tweet);
}
public boolean deleteTweet(SavedTweet tweet)
{
return tweetDao.delete(tweet);
}
public SavedTweet getTweet(long id)
{
return tweetDao.get(id);
}
public List<SavedTweet> getAllTweets()
{
return tweetDao.getAll();
}
public boolean deleteAll()
{
return tweetDao.deleteAll();
}
}

37
HW5/src/edu/uncc/itcs4180/hw5/database/DatabaseHelper.java Normal file
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@ -0,0 +1,37 @@
package edu.uncc.itcs4180.hw5.database;
import android.content.Context;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
import android.util.Log;
public class DatabaseHelper extends SQLiteOpenHelper
{
final static String DATABASE_NAME = "savedtweets.db";
final static int DATABASE_VERSION = 1;
final static String TAG = "STdb1";
DatabaseHelper(Context mContext)
{
super(mContext, DATABASE_NAME, null, DATABASE_VERSION);
}
@Override
public void onOpen(SQLiteDatabase db)
{
super.onOpen(db);
}
@Override
public void onCreate(SQLiteDatabase db)
{
SavedTweetTable.onCreate(db);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion)
{
Log.w(TAG, "Upgrading db from version "+ oldVersion+ " to "+ newVersion);
SavedTweetTable.onUpgrade(db, oldVersion, newVersion);
}
}

75
HW5/src/edu/uncc/itcs4180/hw5/database/SavedTweet.java Normal file
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@ -0,0 +1,75 @@
package edu.uncc.itcs4180.hw5.database;
public class SavedTweet
{
private long id;
private String username;
private String text;
private String time;
private String profileImageUrl;
public SavedTweet()
{
this.id= 0;
this.username = "";
this.text = "";
this.time = "";
this.profileImageUrl = "";
}
public SavedTweet(long id, String username, String text, String time, String profileImageUrl)
{
this.id= id;
this.username = username;
this.text = text;
this.time = time;
this.profileImageUrl = profileImageUrl;
}
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getText() {
return text;
}
public void setText(String text) {
this.text = text;
}
public String getTime() {
return time;
}
public void setTime(String time) {
this.time = time;
}
public String getProfileImageUrl() {
return profileImageUrl;
}
public void setProfileImageUrl(String profileImageUrl) {
this.profileImageUrl = profileImageUrl;
}
@Override
public String toString() {
return "SavedTweet [id=" + id + ", username=" + username + ", text="
+ text + ", time=" + time + ", profileImageUrl="
+ profileImageUrl + "]";
}
}

123
HW5/src/edu/uncc/itcs4180/hw5/database/SavedTweetDAO.java Normal file
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@ -0,0 +1,123 @@
package edu.uncc.itcs4180.hw5.database;
import java.util.ArrayList;
import java.util.List;
import android.content.ContentValues;
import android.database.Cursor;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
public class SavedTweetDAO
{
private SQLiteDatabase db;
public SavedTweetDAO(SQLiteDatabase db)
{
this.db = db;
}
public long save(SavedTweet tweet)
{
ContentValues values = new ContentValues();
values.put(SavedTweetTable.USER_NAME, tweet.getUsername());
values.put(SavedTweetTable.TEXT, tweet.getText());
values.put(SavedTweetTable.TIME, tweet.getTime());
values.put(SavedTweetTable.PROFILE_IMAGE_URL, tweet.getProfileImageUrl());
return db.insert(SavedTweetTable.TABLE_NAME, null, values);
}
public boolean update(SavedTweet tweet)
{
ContentValues values = new ContentValues();
values.put(SavedTweetTable.USER_NAME, tweet.getUsername());
values.put(SavedTweetTable.TEXT, tweet.getText());
values.put(SavedTweetTable.TIME, tweet.getTime());
values.put(SavedTweetTable.PROFILE_IMAGE_URL, tweet.getProfileImageUrl());
return db.update(SavedTweetTable.TABLE_NAME, values, SavedTweetTable.ID+"="+tweet.getId(), null)<0;
}
public boolean delete(SavedTweet tweet)
{
return db.delete(SavedTweetTable.TABLE_NAME, SavedTweetTable.ID+"="+tweet.getId(), null)>0;
}
public SavedTweet get(long id)
{
SavedTweet tweet = null;
Cursor c = db.query(true, SavedTweetTable.TABLE_NAME,
new String[]{SavedTweetTable.ID, SavedTweetTable.USER_NAME, SavedTweetTable.TEXT, SavedTweetTable.TIME, SavedTweetTable.PROFILE_IMAGE_URL},
SavedTweetTable.ID+"="+id, null, null, null, null, null);
if(c!=null)
{
c.moveToFirst();
tweet = this.buildFromCursor(c);
}
if(!c.isClosed())
{
c.close();
}
return tweet;
}
public List<SavedTweet> getAll()
{
List<SavedTweet> list = new ArrayList<SavedTweet>();
Cursor c = db.query(SavedTweetTable.TABLE_NAME,
new String[]{SavedTweetTable.ID, SavedTweetTable.USER_NAME, SavedTweetTable.TEXT, SavedTweetTable.TIME, SavedTweetTable.PROFILE_IMAGE_URL},
null, null, null, null, null);
if(c!=null)
{
c.moveToFirst();
do
{
SavedTweet tweet = this.buildFromCursor(c);
if(tweet != null)
{
list.add(tweet);
}
}while(c.moveToNext());
}
if(!c.isClosed())
{
c.close();
}
return list;
}
private SavedTweet buildFromCursor(Cursor c)
{
SavedTweet tweet = null;
if(c!=null)
{
try
{
tweet = new SavedTweet();
tweet.setId(c.getLong(0));
tweet.setUsername(c.getString(1));
tweet.setText(c.getString(2));
tweet.setTime(c.getString(3));
tweet.setProfileImageUrl(c.getString(4));
}
catch(Exception e)
{
return null;
}
}
return tweet;
}
public boolean deleteAll()
{
try
{
db.execSQL("delete from "+ SavedTweetTable.TABLE_NAME);
db.execSQL("delete from sqlite_sequence where name='"+ SavedTweetTable.TABLE_NAME+"'");
return true;
}
catch(SQLException e)
{
return false;
}
}
}

39
HW5/src/edu/uncc/itcs4180/hw5/database/SavedTweetTable.java Normal file
View File

@ -0,0 +1,39 @@
package edu.uncc.itcs4180.hw5.database;
import android.database.SQLException;
import android.database.sqlite.SQLiteDatabase;
public class SavedTweetTable
{
final static String TABLE_NAME = "savedtweets";
final static String ID = "_id";
final static String USER_NAME = "username";
final static String TEXT = "text";
final static String TIME = "time";
final static String PROFILE_IMAGE_URL = "profileimageurl";
public static void onCreate(SQLiteDatabase db)
{
String createTableSql = "CREATE TABLE "+ SavedTweetTable.TABLE_NAME + "("+
SavedTweetTable.ID+ " integer primary key autoincrement, "+
SavedTweetTable.USER_NAME+ " text not null, "+
SavedTweetTable.TEXT+ " text not null, "+
SavedTweetTable.TIME+ " text not null, "+
SavedTweetTable.PROFILE_IMAGE_URL+ " text not null);";
try
{
db.execSQL(createTableSql);
}
catch(SQLException e)
{
e.printStackTrace();
}
}
public static void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion)
{
db.execSQL("DROP TABLE IF EXISTS "+ SavedTweetTable.TABLE_NAME);
SavedTweetTable.onCreate(db);
}
}