Develop Reference

How can I make Gridview get filled AFTER save is clicked?

Im developing a contacts app, and for now Ive been trying to get this drawables from the array get uploaded into the Gridview on the main screen AFTER the save mosaic button is clicked in the mosaic creation screen.
the floating action button (red plus button) on the mosaicListScreen (main screen) leads to the MosaicCreationScreen). the user hypothetically uploads the image and enters the mosaic name then saves using the save mosaic button, as can be seen in the image here
For now, before I focus on uploading image and letting the user create their own unique mosaics (groups), Im testing the Gridview updating with some drawables, which are listed in the array as can be seen in the code below.
The issue thats occuring is as soon as the user clicks the floating action button on the main screen, it updates the gridview with the drawables listed in the array of the MosaicCreation Screen, THEN it goes to the MosaicCreationScreen, and when save mosaic button is clicked on the MosaicCreationScreen, the intent goes to the main screen as its supposed to do, except the gridview will have nothing on it.
so its like its doing the opposite of whats supposed to happen in steps.
here is my code for the two screens:
public class mosaicsListScreen extends AppCompatActivity {
public static mosaicsListScreen theScreen; //this variable is used in the MosaicCreationScreen to point to this screen to find the GridView by id
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
theScreen = this;
setContentView(R.layout.activity_mosaics_list_screen);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.createMosaicButton);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(getApplicationContext(),MosaicCreationScreen.class);
startActivity(intent);
finish();
}
});
}
}
here is the code for the MosaicCreationScreen (the one that opens after user clicks floating action button from mosaicListScreen (main screen))
public class MosaicCreationScreen extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_mosaic_creation_screen);
final GridView mosaicList = (GridView) mosaicsListScreen.theScreen.findViewById(R.id.mosaicList);
mosaicList.setAdapter(new ImageAdapter(this)); //this line of code displays the mosaics on mosaicListScreen
Button saveNewMosaicButton = (Button) findViewById(R.id.saveNewMosaicButton);
saveNewMosaicButton.setOnClickListener(new AdapterView.OnClickListener() {
#Override
public void onClick(View view) {
//mThumbIds.notify();
Intent intent = new Intent(getApplicationContext(), mosaicsListScreen.class);
startActivity(intent);
finish();
//mosaicList.setAdapter(new ImageAdapter(this)); //this displays the mosaics on mosaicListScreen, it logically should go here, however "this" causes an error saying ImageAdapter (android.content.Context) in ImageAdapter cannot be applied to (anonymous android.view.View.OnClickListener)
Toast.makeText(mosaicsListScreen.theScreen, "Mosaic Created!", Toast.LENGTH_SHORT).show();
}
});
/* mosaicList.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
Toast.makeText(mosaicsListScreen.theScreen, "", Toast.LENGTH_SHORT).show();
}
});*/
}
public class ImageAdapter extends BaseAdapter {
private Context mContext;
public ImageAdapter(Context c) {
mContext = c;
}
public int getCount() {
return mThumbIds.length;
}
public Object getItem(int position) {
return null;
}
public long getItemId(int position) {
return 0;
}
public View getView(int position, View convertView, ViewGroup parent) {
ImageView imageView = new ImageView(mContext);
imageView.setImageResource(mThumbIds[position]);
return imageView;
}
//this array holds the drawables that would appear on the Gridview
private Integer[] mThumbIds = {
R.drawable.family,
R.drawable.project
};
}
}
Here are the XML for the layouts:
content_mosaics_list_screen.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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"
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"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
tools:context="codesages.mosaic.mosaicsListScreen"
tools:showIn="#layout/activity_mosaics_list_screen">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium"
android:text="#string/create_a_mosaic_or_pick_from_the_mosaics_created"
android:id="#+id/textView4"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:textSize="20sp" />
<ImageButton
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/deleteMosaicButton"
android:src="#android:drawable/ic_menu_delete"
android:clickable="true"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:contentDescription="" />
<GridView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/textView4"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_marginTop="14dp"
android:id="#+id/mosaicList"
android:layout_above="#+id/textView7"
android:numColumns="auto_fit" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall"
android:text="#string/holdMosaictoDeleteLabel"
android:id="#+id/textView7"
android:layout_marginBottom="16dp"
android:layout_above="#+id/deleteMosaicButton"
android:layout_centerHorizontal="true" />
</RelativeLayout>
activity_mosaics_list_screen.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout 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"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="codesages.mosaic.mosaicsListScreen">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/AppTheme.PopupOverlay" />
</android.support.design.widget.AppBarLayout>
<android.support.design.widget.FloatingActionButton
android:id="#+id/createMosaicButton"
android:layout_width="56dp"
android:layout_height="66dp"
android:layout_gravity="bottom|end"
android:layout_margin="#dimen/fab_margin"
android:src="#android:drawable/ic_input_add" />
<include layout="#layout/content_mosaics_list_screen" />
</android.support.design.widget.CoordinatorLayout>
activity_mosaic_creation_screen.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: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="codesages.mosaic.MosaicCreationScreen"
android:focusable="true">
<EditText
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/mosaicNametextField"
android:hint="Mosaic Name"
android:layout_marginTop="81dp"
android:layout_alignParentTop="true"
android:layout_alignParentLeft="true"
android:layout_alignParentStart="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Save New Mosaic"
android:id="#+id/saveNewMosaicButton"
android:layout_marginTop="48dp"
android:layout_below="#+id/uploadMosaicImageButton"
android:layout_centerHorizontal="true"
android:enabled="true"
android:clickable="true" />
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Upload Mosaic Image"
android:id="#+id/uploadMosaicImageButton"
android:layout_marginTop="68dp"
android:layout_below="#+id/mosaicNametextField"
android:layout_centerHorizontal="true"
android:enabled="true"
android:clickable="true" />
</RelativeLayout>
mosaicList.setAdapter(new ImageAdapter(this));
thats what appears to be creating the mosaics. if i comment this out, i wont see anything in the gridview.
however, i believe that should be inside the saveNewMosaicButton onClick, but I am getting an error that says "saying ImageAdapter (android.content.Context) in ImageAdapter cannot be applied to (anonymous android.view.View.OnClickListener)"
HERE is an image example of what the desired result should be. however whats happening right now is as ive stated, as soon as the floating action button is clicked, the mosaics are created, THEN it takes you to the creation screen, in which wehn i click save mosaics, it actually erases the mosaics...a job of the trash icon which is too soon to function for now heh.
appreciate help on this

Currently, you have
public static mosaicsListScreen theScreen;
in your first Activity which you use to fill the ListView in this first Activity. This is a dangerous approach because the Activity instance referenced by this variable may be destroyed, for example if you're doing work in your second Activity (e.g. downloading images) which uses much memory, but also if the user somehow triggers a configuration change.
As you are calling finish() after starting the second Activity, you even tell the system that the first Activity may be destroyed. The only reason you did not get a NPE is that the system destroys the finished Activity not instantly but as soon as it seems a good idea to do so.
All in all, you need a way to safely transmit information from one Activity to the other. In your case, I think you would like to send the Uri of the selected images ( or for now, send the resource id of the selected drawables). Both can be accomplished by using Intent extras.
Basically, there are two options:
use startActivityForResult() and override onActivityResult() to obtain the desired information for the first Activity
simply start the first Activity from the second Activity once you have the result and use getIntent() in the first Activity (e.g. in onCreate()) to check for results
No matter what you do, always access UI elements like the ListView in the Activity to which they belong!
If you choose the second option, your first Activity could look like this:
public class mosaicsListScreen extends AppCompatActivity {
public static final String THUMB_IDS = "someuniquestring";
private GridView mosaicList;
private ArrayList<Integer> mThumbIds;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_mosaics_list_screen);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.createMosaicButton);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(getApplicationContext(),MosaicCreationScreen.class);
startActivity(intent);
finish();
}
});
fillThumbIds();
mosaicList = (GridView) findViewById(R.id.mosaicList);
// Note: Adapter code in this Activity
mosaicList.setAdapter(new ImageAdapter(this));
}
private void fillThumbIds()
{
mThumbIds = new ArrayList();
// somehow get older thumb ids if necessary (from database?)
// and add to ArrayList like this:
mThumbIds.add(R.drawable.family);
mThumbIds.add(R.drawable.project);
// assuming we transmit resource id's: use an int array with the Intent
int[] newThumbIds = getIntent().getIntArrayExtra(THUMB_IDS);
if (newThumbIds != null)
{
// loop through the array to add new thumb ids
for (int i = 0; i < newThumbIds.length; i++) {
mThumbIds.add(newThumbIds[i]);
}
}
}
// Adapter code goes here
// Note: thumbIds no longer as array but as ArrayList!
}
In the second Activity, you put the selected thumb ids as Intent extra as follows:
saveNewMosaicButton.setOnClickListener(new AdapterView.OnClickListener() {
#Override
public void onClick(View view) {
Intent intent = new Intent(getApplicationContext(), mosaicsListScreen.class);
// if 'myNewThumbs' is the int array with the new thumb ids
intent.putExtra(mosaicsListScreen.THUMB_IDS, myNewThumbs);
startActivity(intent);
finish();
}
});

Android - OnItemClickListener only *sometimes* not working

I have a ListView in one of my activities that I have bound to an ArrayList using a custom ArrayAdapter. I have set an OnItemClickListener to the ListView which should call a method that starts another activity. However, I find that when I click on the ListView items, it only sometimes works. Sometimes it will start the activity as it should; other times it seems to detect the click (the ripple effect appears on the list item) but does nothing; other times it doesn't even appear to detect the click (the ripple effect doesn't appear).
I've tried all the usual suggestions that I've come across: blocking descendants on the parent view item, setting clickable and focusable to false on all the components of the item views, setting isEnabled to return true in the custom adapter, etc, but the behavior remains the same. Any help appreciated. Here is the relevant code:
Activity containing the ListView:
public class ViewCollectionActivity extends AppCompatActivity {
private final String className = this.getClass().getSimpleName();
private CollectionHandler collectionHandler;
private Context context;
private ArrayList<Game> displayedCollection;
private GameCollectionAdapter collectionAdapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_view_collection);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
context = this;
collectionHandler = CollectionHandler.getInstance(this);
TextView view = null;
if (collectionHandler.getDisplayedCollection().size() > 0) {
view = (TextView) findViewById(R.id.no_items_textview);
view.setVisibility(View.GONE);
}
String currentDate = collectionHandler.getDateLastSynchronised();
view = (TextView) findViewById(R.id.last_updated_textview);
view.setText("Last synchronised: " + currentDate + " Total games: " + String.valueOf(collectionHandler.getDisplayedCollection().size()));
collectionAdapter = collectionHandler.getCollectionAdapter();
ListView listView = (ListView) findViewById(R.id.collection_list_view);
listView.setAdapter(collectionAdapter);
AdapterView.OnItemClickListener collectionItemClickListener = new AdapterView.OnItemClickListener(){
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
launchGameDetailsActivity(position);
}
};
listView.setOnItemClickListener(collectionItemClickListener);
}
public void launchGameDetailsActivity(int position){
Log.d(className,"Starting lauchGameDetailsActivity method");
collectionHandler.setSelectedGame(position);
Intent intent = new Intent(this,ViewGameDetailsActivity.class);
startActivity(intent);
Log.d(className, "Ending lauchGameDetailsActivity method");
}
The XML for the activity:
<?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:orientation="vertical"
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="com.bleachedlizard.ludome.viewcollection.ViewCollectionActivity">
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Synchronise Collection"
android:onClick="synchroniseCollection"/>
<TextView
android:id="#+id/last_updated_textview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Last synchronised: "
android:textAlignment="center"
/>
<Button
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Display Collection"
android:visibility="gone"
android:onClick="displayCollection"/>
<ListView
android:id="#+id/collection_list_view"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1">
</ListView>
<TextView
android:id="#+id/no_items_textview"
android:layout_width="match_parent"
android:layout_height="50dp"
android:text="You have no items in your collection."
android:textAlignment="center"
android:textSize="20sp"/>
</LinearLayout>
The XML for the item views:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/collection_item_layout"
android:layout_width="match_parent"
android:layout_height="75dp"
android:orientation="horizontal"
android:clickable="false"
android:descendantFocusability="blocksDescendants"
android:focusable="false"
android:focusableInTouchMode="false">
<ImageView
android:id="#+id/collection_item_image"
android:layout_width="75dp"
android:layout_height="75dp"
android:src="#drawable/testimage"
android:focusable="false"
android:focusableInTouchMode="false"
android:clickable="false"
/>
<TextView
android:id="#+id/collection_item_name"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:gravity="center_vertical"
android:padding="16dp"
android:singleLine="false"
android:textColor="#android:color/darker_gray"
android:focusable="false"
android:focusableInTouchMode="false"
android:clickable="false"
android:textIsSelectable="false"/>
<TextView
android:id="#+id/collection_item_plays"
android:layout_width="100dp"
android:layout_height="match_parent"
android:gravity="center_vertical"
android:padding="8dp"
android:textColor="#android:color/darker_gray"
android:text="Plays: 0"
android:focusable="false"
android:focusableInTouchMode="false"
android:clickable="false"
android:textIsSelectable="false"/>
</LinearLayout>
The code for the custom adapter:
public class GameCollectionAdapter extends ArrayAdapter<Game> {
private ArrayList<Game> collection;
public GameCollectionAdapter(Context context, int resource, ArrayList<Game> collection){
super(context, resource, collection);
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
LinearLayout gameView = (LinearLayout) convertView;
LayoutInflater mInflater = LayoutInflater.from(getContext());
if (gameView == null) {
gameView = (LinearLayout) mInflater.inflate(R.layout.collection_item_view, null);
}
//Game game = collection.get(position);
Game game = super.getItem(position);
if (game != null) {
// This is how you obtain a reference to the TextViews.
// These TextViews are created in the XML files we defined.
TextView gameTitle = (TextView) gameView.findViewById(R.id.collection_item_name);
TextView numOfPlays = (TextView) gameView.findViewById(R.id.collection_item_plays);
ImageView thumbnail = (ImageView) gameView.findViewById(R.id.collection_item_image);
// check to see if each individual textview is null.
// if not, assign some text!
if (gameTitle != null){
gameTitle.setText(game.getTitle());
}
if (numOfPlays != null){
numOfPlays.setText("Plays: " + String.valueOf(game.getNumOfPlays()));
}
if (thumbnail != null){
thumbnail.setImageBitmap(game.getThumbnail());
}
}
// the view must be returned to our activity
return gameView;
}
#Override
public boolean isEnabled(int position) {
return true;
}
}

I discovered what was causing the problem: the way I had set up the array that backed the ListView meant that it was downloading and storing the Bitmaps for every element in the array all the time. Once I changed the implementation so that it only downloaded the images as the ListView required them, then that seemed to improve performance and the onClickListener started to work fine.
The implementation I used was the exact same one shown here:
http://developer.android.com/training/displaying-bitmaps/process-bitmap.html

I think the issue is due to the position of the item selection whenever you click you have an list position which is passed to your method launchGameDetailActivity(int position) check with log or toast on item click what all the position you are getting do the needful.
Here is my code try this like this if it helps.
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(RecipeClass.this, "Position is" + position, Toast.LENGTH_SHORT).show();
Intent intent = new Intent(RecipeClass.this, RecipeIngredients.class)
intent.putExtra("position", position);
startActivity(intent);
}
Check your arraylist value also whether they are not null.

Can the main activity be able to grab elements from two XML files?

UPDATE WITH CODE (Sorry for crappy formatting of my code, some reason it had problems allowing me to post it so I had to mess with the lines for a whole to get it to allow me to save thisedit)
Here is the idea. I have an app that works with Clarifia's image recognition. I generated the app using Google's pre built navegation bar, so there is extra xml files and code for that, but it can be ignored the two needed for this is activity_main.xml and content_main.xml. anyways in content_main.xml it is a linear layout that has an imageview and a listview. My goal is to dynamically generate the listview with a list of BUTTONS. each button will have setText() done to it to give it a tag, so for example if a image selected is a dog, and the tags are dog, animal, etc, then that many buttons will be generated, with a setText() of one button being dog, the other button being animal, etc . now Since I have to do a network call, the network call is done in asynctask. After it is done, the method onPostExecute() is called and from there I get the tags. NOW since i got the tags, I want to call set an adapter that will hold an array of buttons, and loop geting the ID for each button and doing settext() on each button with the tags. from there i want to set the adapter to the list view..
Problems:
way to many to count, but I THINK i narrowed it down to me not knowing how to get the "views" from the second xml file to have the elements be used on the first xml file, because everything comes out NULL. I tried googling it but i just keep running into road blocks. I just want to name each button with a tag and put them into listview, but like i said, since these elements are in a different xml file than main_activity, I think this is the problem. so here is the code per request.
MainActivity.java
public class MainActivity extends AppCompatActivity implements NavigationView.OnNavigationItemSelectedListener
{
private static final String CLASS = MainActivity.class.getSimpleName();
private Button selectButton;
private Toolbar toolbar;
private NavigationView navigationView;
private Clari
faiData cdata = null;
private ImageView imageview;
private ListView listview;
private TagAdapter adapter;
private List<Button> data;
protected Context context;
private GoogleApiClient client;
protected LinearLayout main;
#Override
protected void onCreate(Bundle savedInstanceState)
{
// THIS IS MY ATTEMPT TO DO THIS
// http://www.java2s.com/Code/Android/UI/UsingtwolayoutxmlfileforoneActivity.htm
super.onCreate(savedInstanceState);
context = MainActivity.this;
main = new LinearLayout (this);
setContentView(R.layout.activity_main);
// AUTO GENERATED stuff left out for nav bar, just showing this line*********
selectButton = (Button) findViewById(R.id.select_button);
selectButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
final Intent media_intent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
// START API OVER NET
startActivityForResult(media_intent, cdata.getOKCode());
}
});
// MY STUFF********************************************************
cdata = new ClarifaiData(this);
imageview = (ImageView) findViewById(R.id.image_view);
client = new GoogleApiClient.Builder(this).addApi(AppIndex.API).build();
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent intent)
{
super.onActivityResult(requestCode, resultCode, intent);
if (requestCode == cdata.getOKCode() && resultCode == RESULT_OK)
{
Uri image = intent.getData();
if (image != null) {
// LEFT OUT STUFF FOR IMAGE RESIZING***************************
//************************************************** START LOOKING HERE***************************************
new AsyncTask<Uri, Void, RecognitionResult>()
{
#Override
protected RecognitionResult doInBackground(Uri... image)
{
// SO API CALL OVER INTERNET, SO NEEDED ASYNC
return cdata.recognizeBitmap(image[0]);
}
#Override
protected void onPostExecute(RecognitionResult result)
{
super.onPostExecute(result);
if (cdata.getTags(result))
{
selectButton.setEnabled(true);
selectButton.setText("Select a photo");
// MY ATTEMPT TO GET THE
// http://www.java2s.com/Code/Android/UI/UsingtwolayoutxmlfileforoneActivity.htm
LayoutInflater inflate = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
LinearLayout taglayout = (LinearLayout) inflate.inflate(R.layout.tag_list_item_trio_item, null);
LinearLayout.LayoutParams parm = new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
listview = (ListView) main.findViewById(R.id.tagview);
main.addView(taglayout, parm);
// this is a arraylist of tags that hold strings
List tags = cdata.getMapTags();
// data is a array of buttons, each button will be labled by each value in tags
data = new ArrayList<Button>();
for (int i = 0; i < tags.size(); i++)
{
// GET ID FOR EACH BUTTON AND PUT IT INTO ARRAY THEN SETTEXT
String loc = "button_item_" + i;
int ID = getResources().getIdentifier(loc, "id", getPackageName());
Button temp = (Button) main.findViewById(R.id.button_item_0);
temp.setText("TEST " + i);
}
// HERE IS THE PROBLEM, I NEED A WAY TO GET THE LAYOUT STUFF FROM MAIN ACTIVITY
adapter = new TagAdapter(MainActivity.this, getResources().getIdentifier("tag_list_item_trio_item", "id", getPackageName()), data);
listview.setAdapter(adapter);
}
else
bottomToast(cdata.getRecError());
}
}.execute(image);
} else {
bottomToast(cdata.getLoadError());
}
}
}
tagAdapter.java
import android.content.Context;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import java.util.List;
public class TagAdapter extends ArrayAdapter<Button> {
private Context context;
private List<Button> taglist;
public TagAdapter(Context context, int resource, List<Button> objects) {
super(context, resource, objects);
Log.i("Test", "constructor " );
this.context = context;
this.taglist = objects;
}
#Override
public int getCount()
{
return taglist.size();
}
getView(int, android.view.View, android.view.ViewGroup)
#Override
public View getView(final int position, View convertView, ViewGroup parent)
{
LayoutInflater layoutInflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
layoutInflater.inflate(R.layout.tag_list_item_dual_item, parent, false);
final Button tag = taglist.get(position);
View view = null;
view = layoutInflater.inflate(R.layout.tag_list_item_trio_item, parent, false);
else
{
view = layoutInflater.inflate(R.layout.tag_list_item_dual_item, parent, false);
Button nameTextView = (Button) view.findViewById(R.id.first_button_dual_item);
nameTextView.setText("test");
Button nameTextView2 = (Button) view.findViewById(R.id.second_button_dual_item);
nameTextView2.setText("test2");
}
return view;
}
}
content_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/main_content"
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"
android:gravity="center|bottom"
android:orientation="vertical"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<ImageView
android:layout_width="match_parent"
android:layout_height="0dp"
android:adjustViewBounds="true"
android:id="#+id/image_view"
android:background="#653fff"
android:layout_weight="0.5"
android:padding="1dp" />
<ListView
android:id="#+id/tagview"
android:layout_width="match_parent"
android:layout_weight="0.35"
android:layout_height="0dp"
android:padding="5dp"
android:background="#68343f"
android:layout_marginTop="10dp"
android:layout_gravity="center_horizontal"
android:textAlignment="center" />
<ImageView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/imageView"
android:layout_gravity="center_horizontal"
android:textAlignment="center"
/>
<Button
android:id="#+id/select_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/sel_image"
android:layout_marginTop="8dp"
android:layout_marginBottom="16dp"
android:paddingLeft="24dp"
android:paddingRight="24dp"
android:background="#3d88ec" />
</LinearLayout>
tag_list_item_trio.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_centerHorizontal="true"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:textAlignment="center"
android:layout_centerInParent="true"
android:orientation="horizontal">
<Button
android:id="#+id/button_item_0"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:background="#000000"
android:layout_gravity="center"
android:adjustViewBounds="true"
android:text="TEST 1"
android:textColor="#ffffff"
/>
<Button
android:id="#+id/button_item_1"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:background="#000000"
android:layout_gravity="center"
android:adjustViewBounds="true"
android:text="TEST 2"
android:textColor="#ffffff"
/>
<Button
android:id="#+id/button_item_2"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:background="#000000"
android:layout_gravity="center"
android:adjustViewBounds="true"
android:text="TEST 3"
android:textColor="#ffffff"
/>
</LinearLayout>
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_centerHorizontal="true"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:textAlignment="center"
android:layout_centerInParent="true"
android:orientation="horizontal">
<Button
android:id="#+id/button_item_0"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:background="#000000"
android:layout_gravity="center"
android:adjustViewBounds="true"
android:text="TEST 1"
android:textColor="#ffffff"
/>
<Button
android:id="#+id/button_item_1"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:background="#000000"
android:layout_gravity="center"
android:adjustViewBounds="true"
android:text="TEST 2"
android:textColor="#ffffff"
/>
<Button
android:id="#+id/button_item_2"
android:layout_width="0dp"
android:layout_weight="1"
android:layout_height="wrap_content"
android:layout_margin="5dp"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:background="#000000"
android:layout_gravity="center"
android:adjustViewBounds="true"
android:text="TEST 3"
android:textColor="#ffffff"
/>
</LinearLayout>

One thing you should know is a Listview and its items are virtualized or recycled/reused or duplicated if i should say. so from how i see it i think your approach is off.
This is how i suggest you rectify it, before i get to that i want to clarify the way i understood a portion of your requirement
My goal is to dynamically generate the listview with a list of BUTTONS. each button will have setText() done to it to give it a tag, so for example if a image selected is a dog, and the tags are dog, animal, etc, then that many buttons will be generated, with a setText() of one button being dog
so you are saying you want a listView with 4 buttons on each row.
Do this, _i am taking relevant portions.
private ListView listview; //your listview
private TagAdapter adapter; // your adapter
//we are in oncreate
//i have no knowledge on cdata so bare with me here
//now remove List<Button> data; from your code
we have jumped to the TagAdapter class
private Context context;
//private List<Button> taglist; remove this also
private ArrayList<TheClassThatContainsTags> myTags;//i am assuming this will be cdata or?
//but this list should contain what setText() for a button will get its text
public TagAdapter(Context context) { //this is how your constructor will look
super(context);
Log.i("Test", "constructor " );
this.context = context;
//here you start your async task and put your async task logic here
//if the async task requires some objects or items which is not in this class
// since this is a separate class, you can inject them, when i say inject
// put them in the constructor of TagAdapter like you inject the Context
//object instance, so it might change to
// public TagAdapter(Context context,OneMoreClassIfIWant omciiw) {
// here you aysnc task will execute, now when onPostExecute is triggered/
//called you will do the following, but so remove all the code lines
// you currently have under onPostExecute
// onPostExecute has triggered
myTags = // the tag items result from onpostExecute
//now your myTags Arraylist of type TheClassThatContainsTags has been
//instantiated
}
we are now moving to getCount still in your custom adapter
#Override
public int getCount() {
return (myTags == null) ? 0 : myTags.size();
}
we are now moving to getView still in your custom adapter
#Override
public View getView(final int position, View convertView, ViewGroup parent) {
//in your posted getview, did you edit that too? if not does it give you errors?
//nevermind
// what you do here is check if convertView is null and instantiate it
// the position here in your method parameter is the index in your myTags
// list
if(convertView == null){
//guess you know how to do this. it should be the same as your old
//getview minus this final Button tag = taglist.get(position);
// and the line below it.
}
//here we are still in the getview - what you do is ,
you find what particular button you want by convertView.findViewById()
//my understanding as i pointer out is you want to have 4 buttons in a row
//it should be something like this
Button b = convertView.findViewById(R.id.button1);
b.setText(getItem(position));//getItem() is an instance method for the
//class you are extending, and it returns an Object of Type T, which in my
//example is TheClassThatContainsTags.class;
// and you can do the same for the next 3 buttons
}
we are out of your getview and custom adapter class , and we are in your oncreate .
here set when you need your tags then you do
tagAdapter = new TagAdapter(context,anyIfDesired_OtherInjections);
listview.setAdatper(tagAdapter);
now you are done. Hope it helps, also please read listview and Arraylist Adapter so you get a foresight of what you are doing and what i have posted here. it will help you trim down the hours you waste, if you spend 12 hours on the docs your will spend 5 minutes writing this and the next time you want to replicate it will be the same 5 minutes.
Be good sir and wish you success.

Android - ExpandableListView feature not working..

What I'm trying to do is to have a listview item with a button in each list viewitem.
When the Buttton is being pressed I want a layout that is at gone state will be visible and expand with animation down, and if the layout is shown than when the same button is being preesed than the layout will slide up and be gone again.
In order to do so I've created the next layout for the listview item -
<?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" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/tilte_info">
<TextView
android:id="#+id/textView_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:layout_marginTop="15dp"
android:text="TextView"
android:textSize="20sp" />
<Button
android:id="#+id/button_open"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginLeft="25dp"
android:text="Open" />
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#5C83AF"
android:visibility="gone"
android:id="#+id/extend_info">
<TextView
android:id="#+id/textView_more_info"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="20dp"
android:layout_marginTop="15dp"
android:text="TextView"
android:textSize="20sp" />
</LinearLayout>
</LinearLayout>
As you can see there are two layouts - one is tilte_info which is always shown and have the button in it, and the other one is extend_info which will be shown or hide by the button click.
Now I've used the next code in order to try and make it work -
public class MainActivity extends Activity {
ArrayList<Place> placesList = new ArrayList<Place>();
placeAdapter adapter;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Place place1 = new Place("Place num 1", "some info on place 1");
Place place2 = new Place("Place num 2", "some info on place 2");
Place place3 = new Place("Place num 3", "some info on place 3");
placesList.add(place1);
placesList.add(place2);
placesList.add(place3);
ListView lv = (ListView) findViewById(R.id.listview_1);
adapter = new placeAdapter(this);
lv.setAdapter(adapter);
}
class placeAdapter extends ArrayAdapter<Place> implements OnClickListener{
public placeAdapter(Context context) {
super(context, -1, placesList);
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
if (convertView==null){
// use the LayoutInflater to inflate an XML layout file:
convertView=getLayoutInflater().inflate(R.layout.list_item, parent,false);
}
TextView textTitle = (TextView) convertView.findViewById(R.id.textView_title);
TextView textInfo = (TextView) convertView.findViewById(R.id.textView_more_info);
Button open = (Button) convertView.findViewById(R.id.button_open);
infoLayout = (View) convertView.findViewById(R.id.extend_info);
infoLayout.setVisibility(View.GONE);
open.setOnClickListener(this);
Place place = placesList.get(position);
textTitle.setText(place.getTitle());
textInfo.setText(place.getInfo());
return convertView;
}
#Override
public void onClick(View v) {
if(infoLayout.isShown()){
slide_up(MainActivity.this, infoLayout);
infoLayout.setVisibility(View.GONE);
}else{
infoLayout.setVisibility(View.VISIBLE);
slide_down(MainActivity.this, infoLayout);
}
}
}
public static void slide_down(Context ctx, View v){
Animation a = AnimationUtils.loadAnimation(ctx, R.anim.slide_down);
if(a != null){
a.reset();
if(v != null){
v.clearAnimation();
v.startAnimation(a);
}
}
}
public static void slide_up(Context ctx, View v){
Animation a = AnimationUtils.loadAnimation(ctx, R.anim.slide_up);
if(a != null){
a.reset();
if(v != null){
v.clearAnimation();
v.startAnimation(a);
}
}
}
}
The thing is that I tried to debug the code and it getting into the onclick function but nothing is happening - the layout that is gone not been shown.
I've chacked the animation code with simple textview outside the listview and it worked, but when im trying to use it in the listview item, it doesn't work.
Any ideas why?
Thanks for any kind of help

Use ExpandableListView. You have to extend the BaseExpandableListAdapter to your adapter and override methods. In this methods, override getGroupView to display the name of expandablegroup and override getChildView method to inflate the child view for list. After inflating the layout for child, set whatever animation you want on that view.

you shoud use expandableview for it...
basic example fot that is here... expandavlelistview example

java.lang.IllegalStateException: The specified child already has a parent. (After editing my post)

building android,location based application. I have my class that initiate google maps api work (MygoogleMapsActivator). this is constractor of this class
public MyGoogleMapsActivator(Context mContext)
{
this.mContext = mContext;
}
.
Context mContext is a activity where i need to display map and address,a pass it here for getting services that i need to activate.Activity displaying the results - my location and address(location and address i am getting from MyGoogleMapsActivator)
when i want to display it on my activity i get this exception in LogCat: Caused by: java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
i am getting ti from this function:
public void SetUpTextViewWithAddress()
{
text = (TextView) findViewById(R.id.address);
text.append(addressString);
setContentView(text);
}
How can i solved it,thanks.
This is full code of my activity:
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_add_new_place);
mGoogleMapsActivator = new MyGoogleMapsActivator(this);
Button buttonAddPlace = (Button) findViewById(R.id.buttonAddPlace);
Button buttonAddByAddress = (Button) findViewById(R.id.buttonAddByAddress);
fm = (SupportMapFragment ) getSupportFragmentManager().findFragmentById(R.id.map);
buttonAddPlace.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
Intent intent = new Intent(AddNewPlaceActivity.this, AddByAddress.class);
mMyPlace = new Places("", city, street, number, "", LoggedWithFacebookMainActivity.GetLoggedInUserName(), myPosition.latitude, myPosition.longitude);
intent.putExtra("Place", mMyPlace);
//intent.putExtra("TheStreet", street);
//intent.putExtra("TheNumber", number);
intent.putExtra("Clarification");
startActivity(intent);
}
});
buttonAddByAddress.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent(AddNewPlaceActivity.this, AddByAddress.class);
mMyPlace = new Places("", city, street, number, "", LoggedWithFacebookMainActivity.GetLoggedInUserName(), myPosition.latitude, myPosition.longitude);
intent.putExtra("Place", mMyPlace);
// intent.putExtra("TheStreet", "Street");
// intent.putExtra("TheNumber", "Number");
intent.putExtra("Clarification");
startActivity(intent);
}
});
mGoogleMapsActivator.SetUpMapIfNeed(fm);
mGoogleMapsActivator.SetMyGoggleActivatorLocationEnabled();
mGoogleMapsActivator.SetUpService();
mGoogleMapsActivator.setUpListener();
mGoogleMapsActivator.SetUpAndGetProvider();
mGoogleMapsActivator.SetMyLocationWithListener();
mGoogleMapsActivator.SetMyPosition();
mGoogleMapsActivator.SetUpMyMarker();
mGoogleMapsActivator.SetUpMapView();
mGoogleMapsActivator.SetUpAddressFromGeocoder();
city = mGoogleMapsActivator.getCity();
street = mGoogleMapsActivator.getStreet();
number = mGoogleMapsActivator.getNumber();
addressString = mGoogleMapsActivator.getAddressString();
SetUpTextViewWithAddress();
mGoogleMapsActivator.AnimateCamera();
public void SetUpTextViewWithAddress()
{
text = (TextView) findViewById(R.id.address);
text.setText(addressString);
// setContentView(text);
}
}
XML:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:map="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="end"
tools:context=".AddNewPlaceActivity" >
<fragment
android:id="#+id/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="370dp" />
<TextView
android:id="#+id/address"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_above="#+id/buttonAddByAddress"
android:layout_alignParentLeft="true"
android:layout_below="#+id/map"
android:layout_toLeftOf="#+id/buttonAddPlace"
android:text="#string/place_address_he" />
<Button
android:id="#+id/buttonAddPlace"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#+id/buttonAddByAddress"
android:layout_alignParentRight="true"
android:layout_alignTop="#+id/address"
android:background="#drawable/custom_button_main"
android:paddingBottom="10dp"
android:text="#string/add_place_he" />
<Button
android:id="#+id/buttonAddByAddress"
style="?android:attr/buttonStyleSmall"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:background="#drawable/custom_button_main"
android:paddingTop="10dp"
android:text="#string/add_place_manually_he" />
</RelativeLayout>
Thanks

The issue is the TextView is already attached to your view hierarchy. I'm guessing the view with address id is already inside the main layout file you are using for your activity, without the full activity code it's hard to tell. If this is true you should remove the setContentView call as it isn't needed. Make sure you want to append the text to what may already be in the TextView, if you want to replace the text you should use setText instead of append.