Am just starting to learn Adroind and am coming up with an Audio player app and am stuck, I dont know how am going to insert the audio files in my Recycler Adapter for it to play. can someone help me out please?
public class AudioRecyclerViewAdapter extends RecyclerView.Adapter<AudioRecyclerViewAdapter.ViewHolder> {
// Global variables
ArrayList audios;
MainActivity mainActivity;
public AudioRecyclerViewAdapter(
// Local variables
MainActivity mainActivity, ArrayList<Audio> audios
) {
this.audios = audios;
this.mainActivity = mainActivity;
}
#NonNull
#Override
public AudioRecyclerViewAdapter.ViewHolder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
// Link to audio item layout
View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.audio_item, parent, false);
return new ViewHolder(v);
}
/**
* Change item layout views
* #param viewHolder
* #param position
*/
#Override
public void onBindViewHolder(#NonNull AudioRecyclerViewAdapter.ViewHolder viewHolder, int position) {
// Get audio
Audio audio = audios.get(position);
// Update views
viewHolder.titleTextView.setText(audio.getTitle());
viewHolder.artworkHolder.setImageResource(audio.getImage());
viewHolder.audioLinearLayout.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
// Check if clicked song is active song.
if(audio.equals(mainActivity.activeAudio)) {
if(audio.isPlaying) {
viewHolder.playIcon.setImageResource(R.drawable.ic_pause_circle_outline_24);
mainActivity.pauseAudio(mainActivity.activeAudio);
} else {
viewHolder.playIcon.setImageResource(R.drawable.ic_play_circle_outline_24);
mainActivity.playAudio(mainActivity.activeAudio);
}
} else {
// Pause previous song
mainActivity.pauseAudio(audio);
// Update to current song
viewHolder.playIcon.setImageResource(R.drawable.ic_pause_circle_outline_24);
mainActivity.setActiveAudio(audio);
}
}
});
}
#Override
public int getItemCount() {
return audios.size();
}
/**
* Access item layout views
*/
public class ViewHolder extends RecyclerView.ViewHolder {
LinearLayout audioLinearLayout;
TextView titleTextView;
ImageView playIcon;
ImageView artworkHolder;
RecyclerView audioRecyclerView;
public ViewHolder(#NonNull View itemView) {
super(itemView);
audioLinearLayout = itemView.findViewById(R.id.playing_audio_linear_layout);
titleTextView = itemView.findViewById(R.id.playing_title_text_view);
playIcon = itemView.findViewById(R.id.playing_play_pause_image_button);
artworkHolder = itemView.findViewById(R.id.playing_audio_image_view);
audioRecyclerView=itemView.findViewById(R.id.audio_recycler_view);
}
}
}
Related
I had created a app in which i have multiple edittext and one buttonwith recyclerviuew and one button which are setvisibilty as Gone.On Button click it add all my data in my recyclerview list with by chnaging visibality of my recycelr view and my button.In my Custom Adapter i am using a image view to delete the item from postion now i want that if it delete all data from list then it should automatically hide my Button and recyclerview.
//Recycler_view Adapter
public class Myviewholder extends RecyclerView.ViewHolder {
public TextView land_Detail, area_detail, s_no1;
public Button delete;
public Myviewholder(View view) {
super(view);
land_Detail = view.findViewById(R.id.hint31);
area_detail = view.findViewById(R.id.hint21);
s_no1 = view.findViewById(R.id.hint11);
delete = view.findViewById(R.id.hint41);
}
}
public Land_adapters(List<Land_list> land_list, Context context) {
this.laand_list = land_list;
this.context = context;
}
#NonNull
#Override
public Land_adapters.Myviewholder onCreateViewHolder(#NonNull ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.land_list, parent, false);
return new Myviewholder(itemView);
}
#Override
public void onBindViewHolder(#NonNull Myviewholder holder, final int position) {
final Land_list current_year = laand_list.get(position);
holder.area_detail.setText("District :" + current_year.getDistrict_name() + "\n" + "Village :" + current_year.getVillage_name());
holder.s_no1.setText(String.valueOf(position + 1));
holder.land_Detail.setText("Acre :" + current_year.getAcre() + "\n" + "Kanal :" + current_year.getKanal() + "\n" + "Marla :" + current_year.getMarla());
holder.delete.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(context, "", Toast.LENGTH_SHORT).show();
Land_list theRemovedItem = laand_list.get(position);
// remove your item from data base
laand_list.remove(position); // remove the item from list
notifyItemRemoved(position); // notify the adapter about the removed item
}
});
}
#Override
public int getItemCount() {
return laand_list.size();
}
//how i am using my recycler in mainactivity class
public void final_step() {
// marla_edit.setError(null);
recyclerView = findViewById(R.id.recycler_view_last1);
mAdapter1 = new Land_Adapter(last_Year1);
recyclerView.setHasFixedSize(true);
RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(this);
recyclerView.setLayoutManager(mLayoutManager);
recyclerView.setAdapter(mAdapter1);
Land_list last_year1 = new Land_list(land_acre, land_kanal, village_selected1, land_marla, district_selected1, teshil_selected1, block_selected1, block_code, teshil_code1, village_code1, district_code);
last_Year1.add(last_year1);
mAdapter1.notifyDataSetChanged();
if (!(last_Year1.size() == 0)) {
RelativeLayout linearLayout = findViewById(R.id.linear123);
recyclerView.setVisibility(View.VISIBLE);
next_button.setVisibility(View.VISIBLE);
}
else
{
next_button.setVisibility(View.INVISIBLE);
}
// i just want that when it press delete image in recycelr view it should hide my button automatically.
you can use an interface to inform the fragment/activity, the list is empty.
Adapter like as below:
public class CustomAdapter extends RecyclerView.Adapter<CustomViewHolder> {
AdapterListener listener;
public void setListener(AdapterListener listener) {
this.listener = listener;
}
...
#Override
public void onBindViewHolder(#NonNull Myviewholder holder, final int position) {
...
holder.delete.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
...
// remove your item from data base
laand_list.remove(position); // remove the item from list
notifyItemRemoved(position); // notify the adapter about the removed item
if (laand_list.size()==0)
listener.onDataListIsEmpty();
}
});
}
public interface AdapterListener {
void onDataListIsEmpty();
}
}
The Activity/Fragment like as below:
class MyActivity extends Activity implements CustomAdapter.AdapterListener {
CustomAdapter adapter;
#Override
protected void onCreate(#Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
...
adapter = new CustomAdapter();
adapter.setListener(this);
...
}
#Override
public void onDataListIsEmpty() {
// set visible or gone views
}
}
hello everyone, I am kind of new using android studio and I am working on my school project. I need to use RecycleVie wand I tried making it but without success.
I use a Object class caled Task whcih have 3 propeties to be shown on the layout but I don't know where is my mistake. the rows which shown as problems are in bold. I will be glad if anyone can help me!
my Object class:
public class Task {
private String material;
private String day;
private String month;
public Task (String material,String day,String month)
{
this.material = material;
this.day = day;
this.month = month;
}
public String getMaterial() {
return material;
}
public void setMaterial(String material) {
this.material = material;
}
public String getDay() {
return day;
}
public void setDay(String day) {
this.day = day;
}
public String getMonth() {
return month;
}
public void setMonth(String month) {
this.month = month;
}
}
the Adapter Code:
public class HomeRecyclerViewAdapter extends RecyclerView.Adapter<HomeRecyclerViewAdapter.ViewHolder> {
private Context mCtx;
private List<Task> tList;
// data is passed into the constructor
public HomeRecyclerViewAdapter(Context mCtx, List<Task> tList) {
this.mCtx = mCtx;
this.tList = tList;
}
// stores and recycles views as they are scrolled off screen
public class ViewHolder extends RecyclerView.ViewHolder {
TextView tvText, tvDateDay, tvDateMonth;
public ViewHolder(View itemView) {
super(itemView);
tvText = itemView.findViewById(R.id.tvText);
tvDateDay = itemView.findViewById(R.id.tvDateDay);
tvDateMonth = itemView.findViewById(R.id.tvDateMonth);
}
}
// inflates the row layout from xml when needed
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
//inflating and returning our view holder
LayoutInflater inflater = LayoutInflater.from(mCtx);
View view = inflater.inflate(R.layout.home_recyclerview_row, null);
return new ViewHolder(view);
}
// binds the data to the TextView in each row
#Override
public void onBindViewHolder(ViewHolder holder, int position) {
Task task = tList.get(position);
**holder.tvText.setText(task.getMaterial());**
}
// allows clicks events to be caught
#Override
public int getItemCount() {
return tList.size();
}
}
and the main code:
public class HomeScreen_activity extends AppCompatActivity implements View.OnClickListener {
List<Task> tList;
RecyclerView homercy;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.home_screen_layout);
homercy = (RecyclerView) findViewById(R.id.homercy);
homercy.setHasFixedSize(true);
homercy.setLayoutManager(new LinearLayoutManager(this));
// set up the RecyclerView
RecyclerView recyclerView = findViewById(R.id.homercy);
tList = new ArrayList<Task>();
Task t1 = new Task("test","12","05");
tList.add(t1);
**HomeRecyclerViewAdapter adapter = new HomeRecyclerViewAdapter(this,tList);**
recyclerView.setAdapter(adapter);
}
Maybe in onCreateViewHolder(), you must do this:
// inflates the row layout from xml when needed
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.home_recyclerview_row, parent, false);
return new ViewHolder(view);
}
i want to populate a listView from the first listView that show all applications installed on the device, the second listView is on the second activity called "Blocked app" , my point is when i click on first listView items , the item should going to the second listView "Blocked App" for making an password interface thank uu and sorry for my english:
here is my MainActivity.Java code:
public class MainActivity extends AppCompatActivity {
private PackageManager packageManager=null;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
final ListView userInstalledApps=(ListView)findViewById(R.id.installed_apps_list);
packageManager=getPackageManager();
final List<AppList>installedApp=getInstalledApps();
final AppAdapter installedAppAdapter=new AppAdapter(MainActivity.this,installedApp);
userInstalledApps.setAdapter(installedAppAdapter);
userInstalledApps.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> adapterView, View view, int i, long l) {
((ImageView)view.findViewById(R.id.ivlock)).setImageResource(R.drawable.unlocked);
// i shouuld write something here
}
});
}
private List<AppList> getInstalledApps()
{
List<AppList> resList=new ArrayList<AppList>();
List<PackageInfo> packs=getPackageManager().getInstalledPackages(0);
for(int i = 0; i < packs.size() ; i++)
{
PackageInfo pi= packs.get(i);
if ((isSystemPackage(pi)== false))
{
String appName=pi.applicationInfo.loadLabel(getPackageManager()).toString();
Drawable dIcon=pi.applicationInfo.loadIcon(getPackageManager());
resList.add(new AppList(appName,dIcon));
}
}
return resList;
}
private boolean isSystemPackage(PackageInfo pkgInfo)
{
return ((pkgInfo.applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) !=0) ? true : false;
}
public class AppAdapter extends BaseAdapter
{
private LayoutInflater layoutInflater;
private List<AppList> listExtStorage;
public AppAdapter(Context context,List<AppList> customListView)
{
layoutInflater=(LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
listExtStorage=customListView;
}
#Override
public int getCount() {
return listExtStorage.size();
}
#Override
public Object getItem(int position) {
return position;
}
#Override
public long getItemId(int position) {
return position;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
ViewHolder listViewHolder;
if(convertView==null)
{
listViewHolder=new ViewHolder();
convertView=layoutInflater.inflate(R.layout.installed_app_list,parent, false);
listViewHolder.AppNameInList=(TextView)convertView.findViewById(R.id.app_name_in_list);
listViewHolder.AppIconInList=(ImageView)convertView.findViewById(R.id.apps_icon);
convertView.setTag(listViewHolder);
}
else
{
listViewHolder=(ViewHolder)convertView.getTag();
}
listViewHolder.AppNameInList.setText(listExtStorage.get(position).getName());
listViewHolder.AppIconInList.setImageDrawable(listExtStorage.get(position).getIcon());
return convertView;
}
}
static class ViewHolder
{
TextView AppNameInList;
ImageView AppIconInList;
}
public class AppList
{
private String name;
Drawable icon;
public AppList(String name, Drawable icon)
{
this.name=name;
this.icon=icon;
}
public String getName()
{
return name;
}
public Drawable getIcon()
{
return icon;
}
}
}
I have a car that loads data from a remote database. Each item in the list has two buttons and I need to make different volley requests for each button. I know how to make the onclick work in the complete item but not how to do it for a widget inside the item.
Item screenshot
I hope you can help me, thanks in advance.
RecyclerViewAdapater:
public class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.ViewHolder>{
private static final String TAG = "RecyclerViewAdapter";
//vars
private List<Buttons> buttonsList;
private Context mContext;
public RecyclerViewAdapter(List<Buttons> buttonsList, Context mContext) {
this.buttonsList = buttonsList;
this.mContext = mContext;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.layout_list_item, parent, false);
return new ViewHolder(view);
}
#Override
public void onBindViewHolder(final ViewHolder holder, final int position) {
Log.d(TAG, "onBindViewHolder: called.");
Buttons buttons = buttonsList.get(position);
Glide.with(mContext)
.load(buttons.getButton_url())
.into(holder.image);
holder.name.setText(buttons.getButton_score());
holder.price.setText(buttons.getButton_price());
}
#Override
public int getItemCount() {
return buttonsList.size();
}
public class ViewHolder extends RecyclerView.ViewHolder {
CircleImageView image;
TextView name, price;
Button buy_button, select_button;
public ViewHolder(View itemView) {
super(itemView);
image = (CircleImageView) itemView.findViewById(R.id.image_view);
name = (TextView) itemView.findViewById(R.id.name);
price = (TextView) itemView.findViewById(R.id.price);
buy_button = (Button) itemView.findViewById(R.id.buy_button_item);
select_button = (Button) itemView.findViewById(R.id.select_button_item);
}
}
}
MainActivity:
private void initRecyclerView(){
Log.d(TAG, "initRecyclerView: init recyclerview");
final LinearLayoutManager layoutManager = new LinearLayoutManager(this, LinearLayoutManager.HORIZONTAL, false);
final RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recyclerButtonsView);
recyclerView.setLayoutManager(layoutManager);
RecyclerViewAdapter adapter = new RecyclerViewAdapter(buttonsList, this);
recyclerView.setAdapter(adapter);
}
I solved this with the answer of LordParsley in this post
I am trying to have a button within a Tab which is part of an activity for uploading images, when clicking the button inside one of the 2 Tabs presented in the activity ( Tab 1 pics, Tab 2 Vid ) the user could choose an image from the device.
My problem is implemneting the onClick Listener and onActivityResult which is not being used when placed after onClick, plus the #Override is being underlined as an error.
I guess i am not implementing the onClick the right way and not sure how to activate onActivityResult the proper way, i would appreciate any guidance;
MainActivty;
public class upload extends AppCompatActivity {
public String UserID;
private static final int REQUEST_SIGNUP = 0;
private DrawerLayout mDrawerLayout;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.upload);
Firebase.setAndroidContext(this);
// Adding Toolbar to Main screen
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
// Setting ViewPager for each Tabs
ViewPager viewPager = (ViewPager) findViewById(R.id.viewpager);
setupViewPager(viewPager);
// Set Tabs inside Toolbar
TabLayout tabs = (TabLayout) findViewById(R.id.tabs);
tabs.setupWithViewPager(viewPager);
}
private void setupViewPager(ViewPager viewPager) {
Adapter adapter = new Adapter(getSupportFragmentManager());
adapter.addFragment(new UploadPictures(), "Pictures");
adapter.addFragment(new UploadVideos(), "Videos");
viewPager.setAdapter(adapter);
}
static class Adapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public Adapter(FragmentManager manager) {
super(manager);
}
#Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
#Override
public int getCount() {
return mFragmentList.size();
}
public void addFragment(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
#Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
And here is the Fragment Code;
public class UploadPictures extends android.support.v4.app.Fragment {
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
final RecyclerView recyclerView = (RecyclerView) inflater.inflate(
R.layout.recycler_view, container, false);
ContentAdapter adapter = new ContentAdapter(recyclerView.getContext());
recyclerView.setAdapter(adapter);
recyclerView.setHasFixedSize(true);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
return recyclerView;
}
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
public ImageView picture;
public EditText tagEditText;
public Button tagCurLoc, choosePic, uploadContent;
public ViewHolder(LayoutInflater inflater, ViewGroup parent) {
super(inflater.inflate(R.layout.pictue_upload, parent, false));
picture = (ImageView) itemView.findViewById(R.id.imgToUpload);
tagEditText = (EditText) itemView.findViewById(R.id.tagEditText);
tagCurLoc = (Button) itemView.findViewById(R.id.tagCurLoc);
choosePic = (Button) itemView.findViewById(R.id.choosePic);
choosePic.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent galleryIntent = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(galleryIntent, RESULT_LOAD_IMAGE);
}
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (data == null) {
onActivityResult(requestCode, resultCode, data);
Toast.makeText(getActivity().getApplicationContext(), "Canceled ", Toast.LENGTH_SHORT).show();
} else {
if (requestCode == RESULT_LOAD_IMAGE) {
Uri selectedImgPath = data.getData();
picture.setImageURI(selectedImgPath);
RealFilePath = Uri.parse(String.valueOf(selectedImgPath));
Toast.makeText(getActivity().getApplicationContext(), " " + RealFilePath, Toast.LENGTH_SHORT).show();
}
}
}
});
uploadContent = (Button) itemView.findViewById(R.id.uploadContent);
}
}
/**
* Adapter to display recycler view.
*/
public class ContentAdapter extends RecyclerView.Adapter<ViewHolder> {
// Set numbers of List in RecyclerView.
private Context mContext;
public ContentAdapter(Context context) {
this.mContext = context;
}
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
return new ViewHolder(LayoutInflater.from(parent.getContext()), parent);
}
#Override
public void onBindViewHolder(final ViewHolder holder, int position) {
}
#Override
public int getItemCount() {
return LENGTH;
}
}
Not sure if the onClick listener for the button should be implemented in the Adapter or the View holder, and from there the issue of onActivityResult cant be used ?
Weel, solved after some more reading and few try outs.
The onClick listener should be implemented at the ViewHolder class followed by
#Override
onActivityResult.
within the onClickListener onActivityResult invoked by;
startActivityForResult(intent, RESULT_LOAD_IMAGE);
and within onActivityResult;
onActivityResult(requestCode, resultCode, data);
Considering all of this taking place in an activity extending Fragment.