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Android Studio app crashes when i try to test it

The app crashes when i tried to test, i am using fragments to create the app:
App crashed
I have this in audioFragment.java:
package amaguenet.com.reproductorxassidas;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.MenuInflater;
import android.view.View;
import android.view.ViewGroup;
import android.media.MediaPlayer;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
public class audioFragment extends Fragment {
// variable declaration
private ListView mainList;
private MediaPlayer mp;
private final String[] listContent = {"Ahonzubilahi Min Mayli", "Ajabani Khayru Baqin", "Ajabani Rabbu Sama", "Ala Innani Usni",
"Alal Muntaqa Khayril Baraya"};
private final int[] resID = {R.raw.ahonzu_bilahi_min_mayli, R.raw.ajabani_khayru_baqin, R.raw.ajabani_rabbu_sama,
R.raw.ala_innani_usni, R.raw.alal_muntaqa_khayril_baraya};
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.fragment_audio, container, false);
// Initializing variables
mp = new MediaPlayer();
mainList = (ListView) v.findViewById(R.id.listView1);
ArrayAdapter<String> adapter = new ArrayAdapter<String>(getActivity(), android.R.layout.simple_list_item_1, listContent);
mainList.setAdapter(adapter);
mainList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view,
int position, long id) {
playSong(position);
}
});
return v;
}
public void playSong(int songIndex) {
// Play song
mp.reset();// stops any current playing song
mp = MediaPlayer.create(getActivity().getApplicationContext(), resID[songIndex]);// create's
// new
// mediaplayer
// with
// song.
mp.start(); // starting mediaplayer
}
#Override
public void onDestroy() {
super.onDestroy();
mp.release();
}
#Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
// Inflate the menu; this adds items to the action bar if it is present.
super.onCreateOptionsMenu(menu, inflater);
}
#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);
}
public interface OnFragmentInteractionListener {
}
}
And this in a in fragment_audio (the layout):
<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"
tools:context="amaguenet.com.reproductorxassidas.audioFragment"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin">
<ListView
android:id="#+id/listView1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true" >
</ListView>
</RelativeLayout>
Can some helps with this, i am using Fragments in Android Studio?

You can use getIdentifier() method, here is a simple example:
private final int resID = getContext().getResources().getIdentifier(direction, "raw", PACKAGE_NAME);
direction - string with your file name f.e: "ahonzu_bilahi_min_mayli"
PACKAGE_NAME - is your package name

Android PopupMenu in recycleview not worked?

I have tried to add sub menu to recycleview but when click on sub menu in every row A message appears : unfortunately app has stopped
after that The application is automatically closed
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:id="#+id/rvAnimals"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
</RelativeLayout>
// recycleview_row.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:padding="10dp">
<TextView
android:id="#+id/tvAnimalName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="20sp"/>
<TextView
android:id="#+id/textViewOptions"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_alignParentTop="true"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:text="⋮"
android:textAppearance="?android:textAppearanceLarge" />
</LinearLayout>
// MainActivity class
package com.example.hamoda.recyvlastexample;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
import android.widget.Toast;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity implements MyRecyclerViewAdapter.ItemClickListener {
MyRecyclerViewAdapter adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
// data to populate the RecyclerView with
ArrayList<String> animalNames = new ArrayList<>();
animalNames.add("Horse");
animalNames.add("Cow");
animalNames.add("Camel");
animalNames.add("Sheep");
animalNames.add("Goat");
// set up the RecyclerView
RecyclerView recyclerView =(RecyclerView) findViewById(R.id.rvAnimals);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
adapter = new MyRecyclerViewAdapter(this, animalNames);
adapter.setClickListener(this);
recyclerView.setAdapter(adapter);
}
#Override
public void onItemClick(View view, int position) {
Toast.makeText(this, "You clicked " + adapter.getItem(position) + " on row number " + position, Toast.LENGTH_SHORT).show();
}
}
// MyRecyclerViewAdapter class
package com.example.hamoda.recyvlastexample;
import android.content.Context;
import android.support.v7.widget.PopupMenu;
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import java.util.Collections;
import java.util.List;
public class MyRecyclerViewAdapter extends RecyclerView.Adapter<MyRecyclerViewAdapter.ViewHolder> {
private List<String> mData = Collections.emptyList();
private LayoutInflater mInflater;
private ItemClickListener mClickListener;
// data is passed into the constructor
public MyRecyclerViewAdapter(Context context, List<String> data) {
this.mInflater = LayoutInflater.from(context);
this.mData = data;
}
// inflates the row layout from xml when needed
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = mInflater.inflate(R.layout.recyclerview_row, parent,false);
ViewHolder viewHolder = new ViewHolder(view);
return viewHolder;
}
// binds the data to the textview in each row
#Override
public void onBindViewHolder(final ViewHolder holder, int position) {
String animal = mData.get(position);
holder.myTextView.setText(animal);
holder.buttonViewOption.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
// creating a popup menu
PopupMenu popup = new PopupMenu((Context)mData,holder.buttonViewOption);
/*
//inflating menu from xml resource
popup.inflate(R.menu.options_menu);
//adding click listener
popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
#Override
public boolean onMenuItemClick(MenuItem item) {
switch (item.getItemId()) {
case R.id.menu1:
//handle menu1 click
break;
case R.id.menu2:
//handle menu2 click
break;
case R.id.menu3:
//handle menu3 click
break;
}
return false;
}
});
//displaying the popup
popup.show();
*/
}
});
}
// total number of rows
#Override
public int getItemCount() {
return mData.size();
}
// stores and recycles views as they are scrolled off screen
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
public TextView myTextView;
public TextView buttonViewOption;
public ViewHolder(View itemView) {
super(itemView);
myTextView = (TextView) itemView.findViewById(R.id.tvAnimalName);
itemView.setOnClickListener(this);
//textViewDesc = (TextView) itemView.findViewById(R.id.textViewDesc);
buttonViewOption = (TextView) itemView.findViewById(R.id.textViewOptions);
}
#Override
public void onClick(View view) {
if (mClickListener != null) mClickListener.onItemClick(view,getAdapterPosition());
}
}
// convenience method for getting data at click position
public String getItem(int id) {
return mData.get(id);
}
// allows clicks events to be caught
public void setClickListener(ItemClickListener itemClickListener) {
this.mClickListener = itemClickListener;
}
// parent activity will implement this method to respond to click events
public interface ItemClickListener {
void onItemClick(View view, int position);
}
}
Error log:
03-31 11:13:57.461 10139-10139/com.example.hamoda.recyvlastexample E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.hamoda.recyvlastexample, PID: 10139
java.lang.ClassCastException: java.util.ArrayList cannot be cast to android.content.Context
at com.example.hamoda.recyvlastexample.MyRecyclerViewAdapter$1.onClick(MyRecyclerViewAdapter.java:38)
at android.view.View.performClick(View.java:5076)
at android.view.View$PerformClick.run(View.java:20279)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5910)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1405)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1200)

You haven't pass Context in PopupMenu constructor and you have cast data list object in Context that is wrong.
PopupMenu popup = new PopupMenu((Context)mData,holder.buttonViewOption);
use below line :
PopupMenu popup = new PopupMenu(context,holder.buttonViewOption);
In above line context is reference of Activity context that is passes in MyRecyclerViewAdapter constructor in your code see below :
// data is passed into the constructor
public MyRecyclerViewAdapter(Context context, List<String> data) {
this.mInflater = LayoutInflater.from(context);
this.mData = data;
}
So create one global reference of contextand pass in PopupMenu constructor.

connecting parse api to android swipe layout

I'm doing a project using Android swipe layout. I'm getting problem when calling a datas from parse server to swiped tabs.
I'm getting this error when I'm calling a list fragment inside a fragment
below is my fragment class
please check
i updated code but some errors showing please check below screenshot
enter image description here
this error comes
import android.app.ListActivity;
import android.app.ListFragment;
import android.database.DataSetObserver;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.view.PagerAdapter;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListAdapter;
import android.widget.ListView;
import com.parse.FindCallback;
import com.parse.ParseException;
import com.parse.ParseObject;
import com.parse.ParseQuery;
import java.util.ArrayList;
import java.util.List;
public class IndividualsFragment extends ListFragment implements FindCallback<ParseObject> {
private List<ParseObject> mOrganization = new ArrayList<ParseObject>();
#Override
public void onViewCreated(View view, Bundle b) {
super.onViewCreated(view, b);
CustomAdaptor adaptor = new CustomAdaptor(getActivity(), mOrganization);
setListAdapter(adaptor);
// This is like calling fetchList()
ParseQuery.getQuery("Organization").findInBackground(this);
}
/**
* This is needed by implementing the callback on the class
**/
#Override
public void done(List<ParseObject> scoreList, ParseException e) {
if (e == null) {
Log.d("score", "Retrieved " + scoreList.size() + " Organization");
mOrganization.clear();
mOrganization.addAll(scoreList);
getListAdapter().notifyDataSetChanged();
} else {
Log.d("score", "Error: " + e.getMessage());
}
}
}
MainActivity.class
public class MainActivity extends AppCompatActivity {
/**
* The {#link android.support.v4.view.PagerAdapter} that will provide
* fragments for each of the sections. We use a
* {#link 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}.
*/
private SectionsPagerAdapter mSectionsPagerAdapter;
/**
* The {#link ViewPager} that will host the section contents.
*/
private ViewPager mViewPager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
// Create the adapter that will return a fragment for each of the three
// primary sections of the activity.
mSectionsPagerAdapter = new SectionsPagerAdapter(getSupportFragmentManager());
// Set up the ViewPager with the sections adapter.
mViewPager = (ViewPager) findViewById(R.id.container);
mViewPager.setAdapter(mSectionsPagerAdapter);
TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(mViewPager);
Parse.initialize(new Parse.Configuration.Builder(this)
.applicationId("my-app-id")
.server("severn-name")
.build()
);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, 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();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
public class SectionsPagerAdapter extends FragmentPagerAdapter {
public SectionsPagerAdapter(FragmentManager fm) {
super(fm);
}
#Override
public Fragment getItem(int position) {
Fragment fragment = null;
switch (position) {
case 0:
Individuals t1 = new Individuals();
return t1;
case 1:
Events t2 = new Events();
return t2;
case 2:
Members t3 = new Members();
return t3;
}
return fragment;
}
#Override
public int getCount() {
// Show 3 total pages.
return 3;
}
#Override
public CharSequence getPageTitle(int position) {
switch (position) {
case 0:
return "INdividuals";
case 1:
return "Events";
case 2:
return "Members";
}
return null;
}
}
}
This is where I call parse data.
OrganizationActivity.class
public class OrganizationActivity extends ListActivity {
protected List<ParseObject> mOrganization;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_organization);
fetcAndList();
}
void fetcAndList() {
ParseQuery<ParseObject> query = ParseQuery.getQuery("Organization");
query.findInBackground(new FindCallback<ParseObject>() {
public void done(List<ParseObject> scoreList, ParseException e) {
if (e == null) {
Log.d("score", "Retrieved " + scoreList.size() + " Organization");
mOrganization = scoreList;
CustomAdaptor adaptor = new CustomAdaptor(getListView().getContext(), mOrganization);
setListAdapter(adaptor);
} else {
Log.d("score", "Error: " + e.getMessage());
}
}
});
}
public void onCreate() { }
}
This is tab1
Individuals.java
import android.database.DataSetObserver;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListAdapter;
import android.widget.ListView;
import com.parse.FindCallback;
import com.parse.ParseException;
import com.parse.ParseObject;
import com.parse.ParseQuery;
import java.util.List;
/**
* Created by faizal on 1/17/17.
*/
public class Individuals extends Fragment implements ListAdapter {
public class IndividualsActivity extends Fragment {
ListView listview;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
OrganizationActivity.fetcAndList();
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.activity_organization, container, false);
listview = (ListView)v.findViewById(R.id.list);
super.onCreate(savedInstanceState);
return v;
}
}
I have created 5 xml files. This was automatically created when creating the Android Studio project.
activity_main.xml
This is list view xml
activity_organization.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin">
<ListView
android:id="#+id/list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true">
</ListView>
</LinearLayout>
This is tab1.xml
This is the first tab , here I call the fields of list view.
t1.xml
<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:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context="cmcom.com.fbcapp.swipe_new.MainActivity$PlaceholderFragment">
<ImageView
android:id="#+id/logo"
android:layout_gravity="left"
android:layout_height="80dp"
android:layout_width="80dp"
android:padding="5dp"
android:paddingLeft="5dp"
android:paddingEnd="5dp"
android:paddingBottom="5dp"
android:paddingRight="5dp"
android:paddingStart="5dp"
android:paddingTop="5dp"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginLeft="12dp"
android:layout_marginStart="12dp"
android:layout_marginTop="14dp">
</ImageView>
<TextView
android:id="#+id/name"
android:text="Name"
android:layout_width="204dp"
android:layout_height="wrap_content"
android:layout_below="#+id/user"
android:layout_alignLeft="#+id/user"
android:layout_alignStart="#+id/user"
android:layout_marginTop="13dp" />
<TextView
android:id="#+id/user"
android:text="Username"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="17dp"
android:layout_marginStart="17dp"
android:layout_alignTop="#+id/logo"
android:layout_toRightOf="#+id/logo"
android:layout_toEndOf="#+id/logo" />
</RelativeLayout>
I tried many times but failed to load parse data inside the tab fragments
if anyone know please help me thank you.

Your ListView is not at all attached to the swipe views. Plus, it's an activity. You need to swipe between Fragments. So move the Parse code into a Fragment with a ListView
And a Fragment is not an Adapter, so you need to implement nothing
public class Individuals extends Fragment { // No implements needed
// Code
}
Then setAdapter is not a method of the Fragment class, so you have to use the method of the ListView itself or use a ListFragment
Here's an example of a ListFragment
(code untested)
public class IndividualsFragment
extends android.support.v4.app.ListFragment
implements FindCallback<ParseObject> {
private List<ParseObject> mOrganization = new ArrayList<ParseObject>();
#Override
public void onViewCreated(View view, Bundle b) {
super.onViewCreated(view, b);
CustomAdaptor adaptor = new CustomAdaptor(getActivity(), mOrganization);
setListAdapter(adaptor);
// This is like calling fetchList()
ParseQuery.getQuery("Organization").findInBackground(this);
}
/**
* This is needed by implementing the callback on the class
**/
#Override
public void done(List<ParseObject> scoreList, ParseException e) {
if (e == null) {
Log.d("score", "Retrieved " + scoreList.size() + " Organization");
mOrganization.clear();
mOrganization.addAll(scoreList);
((CustomAdaptor) getListAdapter()).notifyDataSetChanged();
} else {
Log.d("score", "Error: " + e.getMessage());
}
}
}

you may need to call back listview in
OrganizationActivity.class

How do I change my Activity's fragment container's background with a custom dialog with code?

Fairly new to Android and I am trying to do some background color changes. Basically I have a main activity that only has a FrameLayout in it's xml. When the activity is created it opens up a fragment for my program. I have a menu item that when clicked pops a dialog box with 3 seekbars(red, green, blue). I want to change the background color to whatever the seekbars position is. I have all the code finished for the seekbars and I know it works on a simple app I created. For reasons to me unknown my app fails when i try to open the dialog box. What is the proper way to set this up in the Main Activity? I want the user to be able to change the background color whenever they want. All my fragment layouts are transparent. This is the tutorial I have been working off of. http://android-er.blogspot.com/2009/08/change-background-color-by-seekbar.html Any advice would be great. I think my problem is I do not fully understand how to access my main_activity's FrameLayout from with-in my MainActivity java class.
activity_main.xml
<LinearLayout 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"
tools:context=".MainActivity"
android:orientation="vertical"
android:background="#e3a153">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/fragmentView"></FrameLayout>
</LinearLayout>
Color_seekbar_selecter.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:id="#+id/myScreen"
>
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Change color"
/>
<SeekBar
android:id="#+id/mySeekingBar_R"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:max="255"
android:progress="0"/>
<SeekBar
android:id="#+id/mySeekingBar_G"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:max="255"
android:progress="0"/>
<SeekBar
android:id="#+id/mySeekingBar_B"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:max="255"
android:progress="0"/>
</LinearLayout>
menu_main.xml
<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=".MainActivity">
<item android:id="#+id/menu_settings"
android:title="Green" />
<item android:id="#+id/menu_red"
android:title="Red" />
<item android:id="#+id/menu_blue"
android:title="Blue" />
<item android:id="#+id/menu_tan"
android:title="Tan" />
</menu>
MainActivity.java
import android.annotation.TargetApi;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.Context;
import android.content.res.Configuration;
import android.graphics.Color;
import android.os.Build;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.text.Layout;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.widget.FrameLayout;
import android.widget.LinearLayout;
import android.widget.SeekBar;
import android.widget.Toast;
import java.util.zip.Inflater;
public class MainActivity extends ActionBarActivity {
//public CategoryFragment categoryFragment;
//public RecipeFragment recipeFragment;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
if(savedInstanceState == null)
{
CategoryFragment categoryFragment = new CategoryFragment();
getSupportFragmentManager().beginTransaction()
.add(R.id.fragmentView, categoryFragment, "categoryFrag")
.commit();
}
}
#Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
if (newConfig.orientation == Configuration.ORIENTATION_LANDSCAPE) {
Toast.makeText(this, "landscape", Toast.LENGTH_SHORT).show();
} else if (newConfig.orientation == Configuration.ORIENTATION_PORTRAIT){
Toast.makeText(this, "portrait", Toast.LENGTH_SHORT).show();
}
}
#Override
protected void onDestroy() {
super.onDestroy();
}
#Override
protected void onPostResume() {
super.onPostResume();
}
#Override
protected void onPause() {
super.onPause();
}
#Override
protected void onResume() {
super.onResume();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate( R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch(item.getItemId())
{
case R.id.menu_green:
}
return super.onOptionsItemSelected(item);
}
}
I have tried for hours to figure this out, but I just don't know where to put what.
This is the code from the example that I found in the link posted above.
import android.app.Activity;
import android.os.Bundle;
import android.widget.LinearLayout;
import android.widget.SeekBar;
public class SeekColorActivity extends Activity {
private int seekR, seekG, seekB;
SeekBar redSeekBar, greenSeekBar, blueSeekBar;
LinearLayout mScreen;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mScreen = (LinearLayout) findViewById(R.id.myScreen);
redSeekBar = (SeekBar) findViewById(R.id.mySeekingBar_R);
greenSeekBar = (SeekBar) findViewById(R.id.mySeekingBar_G);
blueSeekBar = (SeekBar) findViewById(R.id.mySeekingBar_B);
updateBackground();
redSeekBar.setOnSeekBarChangeListener(seekBarChangeListener);
greenSeekBar.setOnSeekBarChangeListener(seekBarChangeListener);
blueSeekBar.setOnSeekBarChangeListener(seekBarChangeListener);
}
private SeekBar.OnSeekBarChangeListener seekBarChangeListener
= new SeekBar.OnSeekBarChangeListener()
{
#Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
// TODO Auto-generated method stub
updateBackground();
}
#Override
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
#Override
public void onStopTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
};
private void updateBackground()
{
seekR = redSeekBar.getProgress();
seekG = greenSeekBar.getProgress();
seekB = blueSeekBar.getProgress();
mScreen.setBackgroundColor(
0xff000000
+ seekR * 0x10000
+ seekG * 0x100
+ seekB
);
}
}
categoryFragment.java
package com.example.mikesgamerig.finalproject;
import android.app.AlertDialog;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListView;
import java.util.ArrayList;
import java.util.List;
public class CategoryFragment extends Fragment {
private ArrayList<String> categoryNameArrayList;
private ArrayAdapter<String> adapter;
private AlertDialog alertDialog;
private AlertDialog alertDialogDelete;
private EditText categoryEditText;
private String getCategoryName;
private List<Category> cats;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
//create view
View rootView = inflater.inflate(R.layout.fragment_category, container, false);
//initialize all variables and widgets
inflater = getLayoutInflater(savedInstanceState);
alertDialog = new AlertDialog.Builder(getActivity()).create();
alertDialog.setView(inflater.inflate(R.layout.dialog_add_category, null));
alertDialogDelete = new AlertDialog.Builder(getActivity()).create();
alertDialogDelete.setView(inflater.inflate(R.layout.dialog_delete_category, null));
Button buttonAddCategory = (Button) rootView.findViewById(R.id.addCategoryButton);
ListView categoryListView = (ListView) rootView.findViewById(R.id.list);
//Array list to store names of categories
categoryNameArrayList = new ArrayList<String>();
//List of Category Objects
cats = Category.listAll(Category.class);
getCategoryNames();
//iterate through the CategoryList and attach to the ArrayList
//create adapter and fill the listView with all the name of categories
adapter = new ArrayAdapter<String>(getActivity(), R.layout.rowlayout, R.id.label, categoryNameArrayList);
categoryListView.setAdapter(adapter);
//set OnClick listener for the add category Button.
// This calls another method that will open a custom dialog box
buttonAddCategory.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
DisplayAddCategoryDialogBox();
}
});
//set an onItemLongClick listener for the ListView.
//First have to setLongClickable to true.
//the OnItemLongClick listener will call a method to open a custom Dialog to delete a category.
categoryListView.setLongClickable(true);
categoryListView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
#Override
public boolean onItemLongClick(AdapterView<?> adapterView, View view, int i, long l) {
DeleteCategory(i);
return true;
}
});
//opens up a new fragment with a list of recipes for the specific category.
categoryListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
String name = categoryNameArrayList.get(i);
RecipeFragment fragment = new RecipeFragment();
fragment.SetTitleName(name);
getFragmentManager().beginTransaction()
.setCustomAnimations(R.anim.slide_in_right, R.anim.slide_out_left, R.anim.slide_in_left, R.anim.slide_out_right)
.replace(R.id.fragmentView, fragment)
.addToBackStack(null).commit();
}
});
return rootView;
}
//This method will Display a custom add category Dialog Box.
public void DisplayAddCategoryDialogBox(){
//Show the Dialog box to enter a new category name.
alertDialog.show();
categoryEditText = (EditText) alertDialog.findViewById(R.id.categoryEditText);
Button saveCategoryDialogBtn = (Button) alertDialog.findViewById(R.id.saveBtn);
Button cancelDialogButton = (Button) alertDialog.findViewById(R.id.cancelBtn);
saveCategoryDialogBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
getCategoryName = categoryEditText.getText().toString();
//Log.d("STRING VALUE:", getCategoryName);
Category test = new Category(getCategoryName);
test.save();
categoryNameArrayList.add(test.getName());
//Log.d("added Value: ", test.getName());
adapter.notifyDataSetChanged();
alertDialog.hide();
}
});
cancelDialogButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
alertDialog.hide();
}
});
}
//this method will display a custom Delete Category Alert Dialog box.
public void DeleteCategory(final int i)
{
alertDialogDelete.show();
Button noBtn = (Button) alertDialogDelete.findViewById(R.id.noBtn);
noBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
alertDialogDelete.hide();
}
});
Button yesBtn = (Button) alertDialogDelete.findViewById(R.id.yesBtn);
yesBtn.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
String tempString = categoryNameArrayList.get(i);
//Log.d("VALUE OF STRING= ", tempString);
categoryNameArrayList.remove(i);
for (Category category : cats) {
String name = category.getName();
if (name.equals(tempString)) {
category.delete();
}
}
adapter.notifyDataSetChanged();
alertDialogDelete.hide();
}
});
}
//Filles the Array
public void getCategoryNames()
{
for(Category category : cats)
{
String name = category.getName();
categoryNameArrayList.add(name);
}
}
}

Actionbarsherlock crashes on screen rotation using latest version

I'm wondering if anyone can help me. I'm pretty new to programming and this is a little over my head, but once this issue is resolved I think I can complete the rest of my program with my current skill set (I hope). Anyway, I'm using Actionbarsherlock to create a swipe tab interface. The code I used was found on Youtube as an example of how to do it. The URL to download the source is: https://www.dropbox.com/s/p91dzt4dekuia3q/SwipeyTabs.zip if anyone wants to look. The sourcecode is available for download, but I'll post what I believe are the relevant parts here. Basically, whenever the device (and emulator) is rotated, the app crashes. If I start the device in landscape mode, it works until rotated into portrait, and if I start in portrait it works until rotated into landscape. I get a null pointer exception as the error and could provide the logcat output if needed.
The MainActivity.java file is:
package com.rufflez.swipeytabs;
import com.actionbarsherlock.app.ActionBar;
import com.actionbarsherlock.app.SherlockFragmentActivity;
import android.os.Bundle;
import android.support.v4.view.ViewPager;
public class MainActivity extends SherlockFragmentActivity {
private ViewPager mViewPager;
private TabsAdapter mTabsAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mViewPager = new ViewPager(this);
mViewPager.setId(R.id.pager);
setContentView(mViewPager);
final ActionBar bar = getSupportActionBar();
bar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
mTabsAdapter = new TabsAdapter(this, mViewPager);
mTabsAdapter.addTab(bar.newTab().setText("Fragment 1"), Fragment_1.class, null);
mTabsAdapter.addTab(bar.newTab().setText("Fragment 2"), Fragment_2.class, null);
mTabsAdapter.addTab(bar.newTab().setText("Fragment 3"), Fragment_3.class, null);
mTabsAdapter.addTab(bar.newTab().setText("Fragment 4"), Fragment_4.class, null);
}
}
The TabsAdapter.java file is:
package com.rufflez.swipeytabs;
import java.util.ArrayList;
import android.content.Context;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.view.ViewPager;
import android.util.Log;
import android.widget.Toast;
import com.actionbarsherlock.app.ActionBar;
import com.actionbarsherlock.app.ActionBar.Tab;
import com.actionbarsherlock.app.SherlockFragmentActivity;
public class TabsAdapter extends FragmentPagerAdapter implements ActionBar.TabListener , ViewPager.OnPageChangeListener{
private final Context mContext;
private final ActionBar mActionBar;
private final ViewPager mViewPager;
private final ArrayList<TabInfo> mTabs = new ArrayList<TabInfo>();
private final String TAG = "21st Polling:";
static final class TabInfo{
private final Class<?> clss;
private final Bundle args;
TabInfo(Class<?> _class, Bundle _args){
clss = _class;
args = _args;
}
}
public TabsAdapter(SherlockFragmentActivity fa, ViewPager pager) {
super(fa.getSupportFragmentManager());
mContext = fa;
mActionBar = fa.getSupportActionBar();
mViewPager = pager;
mViewPager.setAdapter(this);
mViewPager.setOnPageChangeListener(this);
}
public void addTab(ActionBar.Tab tab, Class<?> clss, Bundle args){
TabInfo info = new TabInfo(clss, args);
tab.setTag(info);
tab.setTabListener(this);
mTabs.add(info);
mActionBar.addTab(tab);
notifyDataSetChanged();
}
#Override
public void onPageScrollStateChanged(int state) {
}
#Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
#Override
public void onPageSelected(int position) {
mActionBar.setSelectedNavigationItem(position);
}
#Override
public void onTabSelected(Tab tab, FragmentTransaction ft) {
mViewPager.setCurrentItem(tab.getPosition());
Log.v(TAG, "clicked");
Object tag = tab.getTag();
for (int i = 0; i<mTabs.size(); i++){
if (mTabs.get(i) == tag){
mViewPager.setCurrentItem(i);
}
}
}
#Override
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
Toast.makeText(mContext, "You've deselected a tab", Toast.LENGTH_SHORT).show();
}
#Override
public void onTabReselected(Tab tab, FragmentTransaction ft) {
}
#Override
public Fragment getItem(int position) {
TabInfo info = mTabs.get(position);
return Fragment.instantiate(mContext, info.clss.getName(), info.args);
}
#Override
public int getCount() {
return mTabs.size();
}
}
Each Fragment_#.java is basically this with the appropriate reference:
package com.rufflez.swipeytabs;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import com.actionbarsherlock.app.SherlockFragment;
public class Fragment_1 extends SherlockFragment{
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_1, container, false);
}
}
The activity_main.xml is:
<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"
tools:context=".MainActivity" >
<android.support.v4.view.ViewPager
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/pager" />
</RelativeLayout>
Each fragment_#.xml is basically this with the appropriate reference changed:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:text="Fragment 1"/>
</LinearLayout>
From what I could figure out, doing several hours of research, is that this used to be a bug in ABS that was addressed several versions ago and likely this issue is somehow connected to that issue. Any help would be very much appreciated. Especially if you can provide it in a teacher-student style so I can learn more effectively. :-) Thanks in advance to anyone attempting to help though!