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

TODO: Add retweeted field to DB, make fix SavedNewsActivity display.

HW5/AndroidManifest.xml

@@ -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>

HW5/project.properties

@@ -12,3 +12,4 @@
 
 # Project target.
 target=android-19
+android.library.reference.1=../../../workspace/appcompat_v7_5

HW5/res/layout/activity_saved_news.xml

@@ -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>
+

HW5/res/layout/saved_tweets_list.xml

@@ -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>

HW5/res/menu/saved_news.xml

@@ -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>

HW5/res/values-w820dp/dimens.xml

@@ -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>

HW5/res/values/strings.xml

@@ -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>

HW5/src/edu/uncc/itcs4180/hw5/MainActivity.java

@@ -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();
+	}
 }

HW5/src/edu/uncc/itcs4180/hw5/SavedNewsActivity.java

@@ -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();
+	}
+}

HW5/src/edu/uncc/itcs4180/hw5/SavedNewsAdapter.java

@@ -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;
+	}
+}

HW5/src/edu/uncc/itcs4180/hw5/TweetListAdapter.java

@@ -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();
 	}
 

HW5/src/edu/uncc/itcs4180/hw5/database/DataManager.java

@@ -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();
+	}
+}

HW5/src/edu/uncc/itcs4180/hw5/database/DatabaseHelper.java

@@ -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);
+	}
+}

HW5/src/edu/uncc/itcs4180/hw5/database/SavedTweet.java

@@ -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 + "]";
+	}
+}

HW5/src/edu/uncc/itcs4180/hw5/database/SavedTweetDAO.java

@@ -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;
+		}
+	}
+}

HW5/src/edu/uncc/itcs4180/hw5/database/SavedTweetTable.java

@@ -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);
+	}
+}