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Android Build a Self-Destructing Message Android App Relating Users in Parse.com Selecting Friends from a List

Andre Colares
Andre Colares
5,437 Points
Posted by Andre Colares
Andre Colares
5,437 Points

Android Studio - CODE UNTIL HERE

This is the functional code until this video.

Andre Colares
Andre Colares
5,437 Points
Andre Colares
Andre Colares
5,437 Points

FriendsFragment

package com.andrecolares.ribbit;

import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.support.v4.app.ListFragment;


public class FriendsFragment extends ListFragment {

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.fragment_friends,
                container, false);

        return rootView;
    }

}

SECTIONPAGERADAPTER.JAVA

package com.andrecolares.ribbit;

import android.content.Context;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;

import java.util.Locale;

/**
 * A {@link FragmentPagerAdapter} that returns a fragment corresponding to
 * one of the sections/tabs/pages.
 */
public class SectionsPagerAdapter extends FragmentPagerAdapter {

    // In the lesson, we factor this code out of MainActivity.class, and thus must add the context
    // as a member variable that gets passed in through the constructor. Nothing about this
    // will change from the video, no deprecation involved, no Android Studio conflicts.

    protected Context mContext;

    public SectionsPagerAdapter(Context context, FragmentManager fm) {
        super(fm);
        mContext = context;
    }

    @Override
    public Fragment getItem(int position) {
        // getItem is called to instantiate the fragment for the given page.
        // Return a PlaceholderFragment (defined as a static inner class below).
        switch (position){
            case 0:
                return new InboxFragment();
            case 1:
                return new FriendsFragment();
        }

        return new InboxFragment();
    }

    @Override
    public int getCount() {
        // In the video we reduce this boilerplate value from 3
        // to 2 tabs, one for Inbox and one for Friends. Again, no
        // change needed from the video, follow along.
        // Show 2 total pages.
        return 2;
    }

    @Override
    public CharSequence getPageTitle(int position) {
        Locale l = Locale.getDefault();
        // this is where we'll pass the context to variables that are now
        // outside the scope of MainActivity.class after the refactor.
        // again, nothing different than the video, follow the video.
        // Remember to delete the third case in the boilerplate code
        // and change the strings resources entries to Inbox and
        // Friends, respectively, just like in the video.
        switch (position) {
            case 0:
                return mContext.getString(R.string.title_section1).toUpperCase(l);
            case 1:
                return mContext.getString(R.string.title_section2).toUpperCase(l);
        }
        return null;
    }
}

EDITFRIENDSFRAGMENT.JAVA

package com.andrecolares.ribbit;

/**
 * Created by Andre on 17/10/2015.
 */
import android.app.AlertDialog;
import android.app.ListFragment;
import android.os.Bundle;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import com.parse.FindCallback;
import com.parse.ParseException;
import com.parse.ParseQuery;
import com.parse.ParseUser;

import java.util.List;

public class EditFriendsFragment extends ListFragment {

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

    protected List<ParseUser> mUsers;


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.fragment_friends, container, false);
        return rootView;
    }

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


        ParseQuery<ParseUser> query = ParseUser.getQuery();
        query.orderByAscending(ParseConstants.KEY_USERNAME);
        query.setLimit(1000);
        query.findInBackground(new FindCallback<ParseUser>() {
            @Override
            public void done(List<ParseUser> users, ParseException e) {
                if (e == null) {
                    //Success
                    mUsers = users;
                    String[] usernames = new String[mUsers.size()];
                    int i = 0;
                    for (ParseUser user : mUsers) {
                        usernames[i] = user.getUsername();
                        i++;
                    }
                    ArrayAdapter<String> adapter = new ArrayAdapter<String>(
                            getListView().getContext(), android.R.layout.simple_list_item_checked,
                            usernames);
                    setListAdapter(adapter);
                    getListView().setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);

                } else {
                    Log.e(TAG, e.getMessage());
                    AlertDialog.Builder builder = new AlertDialog.Builder(getListView().getContext());
                    builder.setMessage(e.getMessage())
                            .setTitle(R.string.error_title)
                            .setPositiveButton(android.R.string.ok, null);
                    AlertDialog dialog = builder.create();
                    dialog.show();
                }
            }
        });
    }

EDITFRIENDSACTIVITY

package com.andrecolares.ribbit;

import android.app.FragmentManager;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;



public class EditFriendsActivity extends ActionBarActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
    }

    @Override
    protected void onResume() {
        super.onResume();
        FragmentManager fm = getFragmentManager();
        EditFriendsFragment list = new EditFriendsFragment();
        fm.beginTransaction().add(android.R.id.content, list).commit();
    }


}

4 Answers

faraz
PLUS
faraz
Courses Plus Student 21,474 Points
faraz
faraz
Courses Plus Student 21,474 Points

Andre,

Please clarify about what your problem is, I'm having trouble understanding. Thanks!

Andre Colares
Andre Colares
5,437 Points
Andre Colares
Andre Colares
5,437 Points

I'm just posting the code until this video... Because the video is outdated. I'm using android studio and facing a lot of problems for every video of this course. When this videos will be updated?

TheBigoso /\
TheBigoso /\
3,217 Points
TheBigoso /\
TheBigoso /\
3,217 Points

Hi Faraz,

Do you think you can help me out.

my program compiles fine. I can take a picture or a 10 sec video. Then I press ok on the picture or video, Im able to choose my friends from a list of my added friends.

The problem is that there is no actionbar displayed and with no actionbar there is no send button displayed as it is involved with the actionbar. Since the release of this video things have been deprecated and the course is outdated.

Do you have any informantion on how to deal with my problem so i can move onto the next part.

Thank you, TheBigOso

here is my github https://github.com/TheBigOso/RibbitSendButton

RecipientsActivity.Java

package com.fartyou.thedirtyappstore.ribbit2;

import android.app.AlertDialog;
import android.app.ListActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.MenuItem;
import android.view.Window;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import com.parse.FindCallback;
import com.parse.ParseException;
import com.parse.ParseRelation;
import com.parse.ParseUser;
import java.util.List;

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;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
        setContentView(R.layout.activity_recipients);
        getListView().setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
    }

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

        mCurrentUser = ParseUser.getCurrentUser();
        mFriendsRelation = mCurrentUser.getRelation(ParseConstants.KEY_FRIENDS_RELATION);
        mFriendsRelation.getQuery().findInBackground(new FindCallback<ParseUser>() {
            @Override
            public void done(List<ParseUser> friends, ParseException e) {

                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();
                }
            }
        });
    }
}

activity_recipients.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin"
    tools:context="com.fartyou.thedirtyappstore.ribbit2.RecipientsActivity">

    <ListView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@android:id/list"
        android:layout_alignParentTop="true"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"/>

    <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@android:id/empty"
        android:text="@string/empty_recipients_list_message"
        />
</RelativeLayout>
Andre Colares
Andre Colares
5,437 Points
Andre Colares
Andre Colares
5,437 Points

You need to set your action bar theme @ Android Manifest.

TheBigoso /\
TheBigoso /\
3,217 Points
TheBigoso /\
TheBigoso /\
3,217 Points

i added the action bar to the android manifest should it look like this?

thank you so much for your response

thebigoso

<activity android:name=".RecipientsActivity"
                  android:screenOrientation="portrait"
                  android:theme="@style/Theme.AppCompat.Light.DarkActionBar">

here is my full manifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.fartyou.thedirtyappstore.ribbit2" >

    <uses-sdk
        android:minSdkVersion="14"
        android:targetSdkVersion="19" />

    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

    <android:uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <android:uses-permission android:name="android.permission.READ_PHONE_STATE" />
    <android:uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
    <android:uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

    <uses-feature
        android:name="android.hardware.camera"
        android:required="true" />

    <application
        android:name=".RibbitApplication"
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:screenOrientation="portrait"
        android:supportsRtl="true"
        android:theme="@style/AppTheme" >
        <meta-data
            android:name="com.parse.APPLICATION_ID"
            android:value="@string/parse_app_id" />
        <meta-data
            android:name="com.parse.CLIENT_KEY"
            android:value="@string/parse_client_key" />

        <activity
            android:name=".MainActivity"
            android:label="@string/app_name"
            android:screenOrientation="portrait"
            android:theme="@style/AppTheme.NoActionBar" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name=".LoginActivity"
            android:screenOrientation="portrait" >
        </activity>
        <activity
            android:name=".SignUpActivity"
            android:parentActivityName=".LoginActivity"
            android:screenOrientation="portrait" >
        </activity>
        <activity
            android:name=".EditFriendsActivity"
            android:screenOrientation="portrait" >
        </activity>
        <activity android:name=".RecipientsActivity"
                  android:screenOrientation="portrait"
                  android:theme="@style/Theme.AppCompat.Light.DarkActionBar">
        </activity>
    </application>

</manifest>