Recipient Activity is giving me a lot of errors

package com.instantmedia.swerve;

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

import android.app.AlertDialog;
import android.app.ListActivity;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.NavUtils;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.Window;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.Toast;

import com.parse.FindCallback;
import com.parse.ParseException;
import com.parse.ParseFile;
import com.parse.ParseObject;
import com.parse.ParseQuery;
import com.parse.ParseRelation;
import com.parse.ParseUser;
import com.parse.SaveCallback;

public class RecipientsActivity extends ListActivity {

public static final String TAG = RecipientsActivity.class.getSimpleName();

    protected List<ParseUser> mFriends;
    protected ParseRelation<ParseUser> mFriendsRelation;
    protected ParseUser mCurrentUser;

    protected MenuItem mSendMenuItem;
    protected Uri mMediaUri; 
    protected String mFileType;


    @Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
    setContentView(R.layout.activity_recipients);
    //show up button in action bar
    setupActionBar();

    getListView().setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);

    mMediaUri = getIntent().getData();
    mFileType = getIntent().getExtras().getString(ParseConstants.KEY_FILE_TYPE);

}
    @Override
    public void onResume() {
            super.onResume();

            mCurrentUser = ParseUser.getCurrentUser();
            mFriendsRelation = mCurrentUser.getRelation(ParseConstants.KEY_FRIENDS_RELATION);

            setProgressBarIndeterminateVisibility(true);

            ParseQuery<ParseUser> query = mFriendsRelation.getQuery();
            query.addAscendingOrder(ParseConstants.KEY_USERNAME);
            query.findInBackground(new FindCallback<ParseUser>() {



                    @Override
                    public void done(List<ParseUser> friends, ParseException e) { 

                        setProgressBarIndeterminateVisibility(false);

                        if (e == null){
                        mFriends = friends;

                        String[] usernames = new String[mFriends.size()];
                        int i = 0;
                        for (ParseUser user : mFriends) {
                            usernames[i] = user.getUsername();
                            i++;

                        }
                        ArrayAdapter<String> adapter = new ArrayAdapter<String>(
                                getListView().getContext(), 
                                android.R.layout.simple_list_item_checked, 
                                usernames);
                        setListAdapter(adapter);
                        }
                        else {
                            Log.e(TAG, e.getMessage());
                            AlertDialog.Builder builder = new AlertDialog.Builder(RecipientsActivity.this);
                            builder.setMessage(e.getMessage())
                                .setTitle(R.string.error_title)
                                .setPositiveButton(android.R.string.ok, null);
                            AlertDialog dialog = builder.create();
                            dialog.show();
                        }
                    }
                });
    }


    private void setupActionBar(){

        getActionBar().setDisplayHomeAsUpEnabled(true);

    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.recipients, menu);
        mSendMenuItem = menu.getItem(0);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        switch (item.getItemId()) {
        case android.R.id.home:
            // This ID represents the Home or Up button. In the case of this
            // activity, the Up button is shown. Use NavUtils to allow users
            // to navigate up one level in the application structure. For
            // more details, see the Navigation pattern on Android Design:
            //
            // http://developer.android.com/design/patterns/navigation.html#up-vs-back
            //
            NavUtils.navigateUpFromSameTask(this);
            return true;

        case R.id.action_send:
            ParseObject message = createMessage();
            if (message == null) {
                // error
                AlertDialog.Builder builder = new AlertDialog.Builder(this);
                builder.setMessage(R.string.error_selecting_file)
                    .setTitle(R.string.error_selecting_file_title)
                    .setPositiveButton(android.R.string.ok, null);
                AlertDialog dialog = builder.create();
                dialog.show();
            }
            else {
                send(message);
                finish();
            }
            return true;
        }
        return super.onOptionsItemSelected(item);
    }
    @Override
        protected void onListItemClick(ListView l, View v, int position, long id) {
            super.onListItemClick(l, v, position, id);

            if (l.getCheckedItemCount() > 0) {

            mSendMenuItem.setVisible(true);
        }
            else {
                mSendMenuItem.setVisible(false);
            }

            }

    protected ParseObject createMessage(){
        ParseObject message = new ParseObject(ParseConstants.CLASS_MESSAGES);
        message.put(ParseConstants.KEY_SENDER_IDS, ParseUser.getCurrentUser().getObjectId());
        message.put(ParseConstants.KEY_SENDER_NAME, ParseUser.getCurrentUser().getUsername());
        message.put(ParseConstants.KEY_RECIPIENT_IDS, getRecipientIds());
        message.put(ParseConstants.KEY_FILE_TYPE, mFileType);

        byte[] fileBytes = FileHelper.getByteArrayFromFile(this, mMediaUri);

        if (fileBytes == null) {
            return null;
        }
        else {
            if (mFileType.equals(ParseConstants.TYPE_IMAGE)) {
                fileBytes = FileHelper.reduceImageForUpload(fileBytes); 
            }
            String fileName = FileHelper.getFileName(this, mMediaUri, mFileType);
            ParseFile file = new ParseFile(fileName, fileBytes);
            message.put(ParseConstants.KEY_FILE, file);

            return message;

        }

    }
    protected ArrayList<String> getRecipientIds(){
        ArrayList<String> recipientIds = new ArrayList<String>();
        for (int i = 0; i < getListView().getCount(); i++) {
            if (getListView().isItemChecked(i)){
                recipientIds.add(mFriends.get(i).getObjectId());

            }
        }
        return recipientIds;
    } 

    protected void send(ParseObject message) {
        message.saveInBackground(new SaveCallback() {

            @Override
            public void done(ParseException e) {
                if (e == null) {
                    //Success!
                    Toast.makeText(RecipientsActivity.this, R.string.success_message, Toast.LENGTH_LONG)
                    .show();

                }
                else {
                    AlertDialog.Builder builder = new AlertDialog.Builder(RecipientsActivity.this);
                    builder.setMessage(R.string.error_sending_message)
                        .setTitle(R.string.error_title)
                        .setPositiveButton(android.R.string.ok, null);
                    AlertDialog dialog = builder.create();
                    dialog.show();

                }

            }
        });
    }

    }

package com.instantmedia.swerve;


import java.io.File;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;

import android.app.ActionBar;
import android.app.AlertDialog;
import android.app.FragmentTransaction;
import android.content.DialogInterface;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.Window;
import android.widget.Toast;

import com.parse.ParseAnalytics;
import com.parse.ParseUser;

public class MainActivity extends FragmentActivity implements
        ActionBar.TabListener {

    public static final String TAG = MainActivity.class.getSimpleName();

    public static final int TAKE_PHOTO_REQUEST = 0;
    public static final int TAKE_VIDEO_REQUEST = 1;
    public static final int PICK_PHOTO_REQUEST = 2;
    public static final int PICK_VIDEO_REQUEST = 3;

    public static final int MEDIA_TYPE_IMAGE = 4;
    public static final int MEDIA_TYPE_VIDEO = 5;

    public static final int FILE_SIZE_LIMIT = 1024*1024*10; // 10MB

    protected Uri mMediaUri;





    protected DialogInterface.OnClickListener mDialogListener = 
            new DialogInterface.OnClickListener() {

                @Override
                public void onClick(DialogInterface dialog, int which) {
                    switch(which){
                        case 0: // take picture
                            Intent takePhotoIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
                            mMediaUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE);
                            if (mMediaUri == null) {
                                // display error
                                Toast.makeText(MainActivity.this, R.string.error_external_storage,
                                    Toast.LENGTH_LONG).show();
                            }
                            else {
                            takePhotoIntent.putExtra(MediaStore.EXTRA_OUTPUT, mMediaUri);
                            startActivityForResult(takePhotoIntent, TAKE_PHOTO_REQUEST);
                            }
                            break;
                        case 1: // take video
                            Intent videoIntent = new Intent(MediaStore.ACTION_VIDEO_CAPTURE);
                            mMediaUri = getOutputMediaFileUri(MEDIA_TYPE_VIDEO);
                            if (mMediaUri == null) {
                                // display error
                                Toast.makeText(MainActivity.this, R.string.error_external_storage,
                                    Toast.LENGTH_LONG).show();
                            }
                            else {
                                videoIntent.putExtra(MediaStore.EXTRA_OUTPUT, mMediaUri);
                                videoIntent.putExtra(MediaStore.EXTRA_DURATION_LIMIT, 10);
                                videoIntent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 0); // 0 for lowest res
                                startActivityForResult(videoIntent, TAKE_VIDEO_REQUEST);
                            }


                            break;
                        case 2: // choose picture
                            Intent choosePhotoIntent = new Intent(Intent.ACTION_GET_CONTENT);
                            choosePhotoIntent.setType("image/*");
                            startActivityForResult(choosePhotoIntent, PICK_PHOTO_REQUEST);


                            break;
                        case 3: // choose video
                            Intent chooseVideoIntent = new Intent(Intent.ACTION_GET_CONTENT);
                            chooseVideoIntent.setType("video/*");
                            Toast.makeText(MainActivity.this, R.string.video_file_size_warning,
                                    Toast.LENGTH_LONG).show();

                            startActivityForResult(chooseVideoIntent, PICK_VIDEO_REQUEST);
                            break;

                    }
                }

                private Uri getOutputMediaFileUri(int mediaType) {
                    // To be Safe, You should Check that the SDCard is mounted
                    // using Environment.getExternalStorageState() before doing this
                    if (isExternalStorageAvailable()) {
                        // get the URI 

                        // 1. Get the external Storage directory
                        String appName = MainActivity.this.getString(R.string.app_name);
                            File mediaStorageDir = new File(
                                    Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),
                                    appName);

                        // 2. Create our Subdirectory
                        if (! mediaStorageDir.exists() ) {
                            if (! mediaStorageDir.mkdir()) {
                                Log.e(TAG, "Failed to create directory.");
                                return null;
                            }
                        }

                        // 3. Create a file name

                        // 4. create the file
                        File mediaFile;
                            Date now = new Date();
                            String timestamp = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US).format(now);

                            String path = mediaStorageDir.getPath() + File.separator;
                            if (mediaType == MEDIA_TYPE_IMAGE){
                                mediaFile = new File(path + "IMG_" + timestamp + ".jpg");
                            }

                            else if (mediaType == MEDIA_TYPE_VIDEO) {
                                mediaFile = new File(path + "VID_" + timestamp + ".mp4");
                            }
                            else {
                                return null;
                            }
                        Log.d(TAG, "file: " + Uri.fromFile(mediaFile)); 

                        // 5. Return the file's URI
                            return Uri.fromFile(mediaFile);

                    }
                    else{
                        return null;
                    }


                }

                private boolean isExternalStorageAvailable(){
                    String state = Environment.getExternalStorageState();

                    if (state.equals(Environment.MEDIA_MOUNTED)) {
                        return true;
                    }
                    else {
                        return false;
                    }
                }

            };


    /**
     * The {@link android.support.v4.view.PagerAdapter} that will provide
     * fragments for each of the sections. We use a
     * {@link android.support.v4.app.FragmentPagerAdapter} derivative, which
     * will keep every loaded fragment in memory. If this becomes too memory
     * intensive, it may be best to switch to a
     * {@link android.support.v4.app.FragmentStatePagerAdapter}.
     */
    SectionsPagerAdapter mSectionsPagerAdapter;

    /**
     * The {@link ViewPager} that will host the section contents.
     */
    ViewPager mViewPager;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
        setContentView(R.layout.activity_main);

        ParseAnalytics.trackAppOpened(getIntent());

        ParseUser currentUser = ParseUser.getCurrentUser();
        if (currentUser == null){
            navigateToLogin();
        }
        else {
            Log.i(TAG, currentUser.getUsername());
        }

        // Set up the action bar.
        final ActionBar actionBar = getActionBar();
        actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);

        // Create the adapter that will return a fragment for each of the three
        // primary sections of the app.
        mSectionsPagerAdapter = new SectionsPagerAdapter(this, 
                getSupportFragmentManager());

        // Set up the ViewPager with the sections adapter.
        mViewPager = (ViewPager) findViewById(R.id.pager);
        mViewPager.setAdapter(mSectionsPagerAdapter);

        // When swiping between different sections, select the corresponding
        // tab. We can also use ActionBar.Tab#select() to do this if we have
        // a reference to the Tab.
        mViewPager
                .setOnPageChangeListener(new ViewPager.SimpleOnPageChangeListener() {
                    @Override
                    public void onPageSelected(int position) {
                        actionBar.setSelectedNavigationItem(position);
                    }
                });

        // For each of the sections in the app, add a tab to the action bar.
        for (int i = 0; i < mSectionsPagerAdapter.getCount(); i++) {
            // Create a tab with text corresponding to the page title defined by
            // the adapter. Also specify this Activity object, which implements
            // the TabListener interface, as the callback (listener) for when
            // this tab is selected.
            actionBar.addTab(actionBar.newTab()
                    .setText(mSectionsPagerAdapter.getPageTitle(i))
                    .setTabListener(this));
        }
    }
    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);

        if (resultCode == RESULT_OK) {
            // ADD TO THE GALLERY and pick them

            if (requestCode == PICK_PHOTO_REQUEST || requestCode == PICK_VIDEO_REQUEST) {
                if (data == null) {
                    Toast.makeText(this, getString(R.string.general_error), Toast.LENGTH_LONG).show();
                }
                else {
                    mMediaUri = data.getData(); 
                }
                Log.i(TAG, "Media URI: " + mMediaUri);
                if (requestCode == PICK_VIDEO_REQUEST) {
                    // make sure the file is less than 10 MB
                    int fileSize = 0;

                    InputStream inputStream = null;
                try {
                    inputStream = getContentResolver().openInputStream(mMediaUri);
                    fileSize = inputStream.available();
                    }
                catch (FileNotFoundException e) {
                        Toast.makeText(this, R.string.error_opening_file, Toast.LENGTH_LONG).show();
                        return;             
                }
                 catch (IOException e) {
                     Toast.makeText(this, R.string.error_opening_file, Toast.LENGTH_LONG).show();
                     return;
                 }

                finally {
                    try {
                        inputStream.close();
                    } catch (IOException e) {/*intentionally blank */}
                    } 
                if (fileSize >= FILE_SIZE_LIMIT){
                    Toast.makeText(this, R.string.error_file_size_too_large, Toast.LENGTH_LONG).show();
                    return;
                }
                }


            }
            else {
            Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
            mediaScanIntent.setData(mMediaUri);
            sendBroadcast(mediaScanIntent);
            }
        Intent recipientsIntent = new Intent(this, RecipientsActivity.class);
        recipientsIntent.setData(mMediaUri);

        String fileType;
        if (requestCode == PICK_PHOTO_REQUEST || requestCode == TAKE_PHOTO_REQUEST) {
            fileType = ParseConstants.TYPE_IMAGE;
        }
        else{
            fileType = ParseConstants.TYPE_VIDEO;
        }
        recipientsIntent.putExtra(ParseConstants.KEY_FILE_TYPE, fileType);
        startActivity(recipientsIntent);
        }

        else if (resultCode != RESULT_CANCELED) {
            Toast.makeText(this, R.string.general_error, Toast.LENGTH_LONG).show();
        }
    }



    private void navigateToLogin() {
        Intent intent = new Intent(this, LoginActivity.class);
        intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TASK);
        startActivity(intent);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int itemId = item.getItemId();

        switch(itemId){
            case R.id.action_logout:
                ParseUser.logOut();
                navigateToLogin();
            case R.id.action_edit_friends:
                 Intent intent = new Intent(this, EditFriendsActivity.class);
                 startActivity(intent);
            case R.id.action_camera:
                AlertDialog.Builder builder = new AlertDialog.Builder(this);
                builder.setItems(R.array.camera_choices, mDialogListener);
                AlertDialog dialog = builder.create();
                dialog.show();
        }
        return super.onOptionsItemSelected(item);
    }

    @Override
    public void onTabSelected(ActionBar.Tab tab,
            FragmentTransaction fragmentTransaction) {
        // When the given tab is selected, switch to the corresponding page in
        // the ViewPager.
        mViewPager.setCurrentItem(tab.getPosition());
    }

    @Override
    public void onTabUnselected(ActionBar.Tab tab,
            FragmentTransaction fragmentTransaction) {
    }

    @Override
    public void onTabReselected(ActionBar.Tab tab,
            FragmentTransaction fragmentTransaction) {
    }
}