How to open a different activity on recyclerView item onclick

Question

i am using a recyclerView to show my listitems in the navigation drawer I have implemented the onclickListener but i have been stuck on how to open a different activity when items are clicked  All my items do on item click as of now as per the code is to display a toast with the item position   I would appreciate the help   AdapterClass java   x000D   x000D  public class AdapterClass extends RecyclerView Adapter lt AdapterClass MyViewHolder gt    x000D      private LayoutInflater inflater  x000D      private Context context  x000D  List lt Information gt data  Collections emptyList    x000D      public AdapterClass Context context List lt Information gt data   x000D          this context context  x000D   x000D          inflater  LayoutInflater from context   x000D          this data data  x000D        x000D       Override x000D      public MyViewHolder onCreateViewHolder ViewGroup parent  int viewType    x000D         View view  inflater inflate R layout custom row parent false   x000D          MyViewHolder holder new MyViewHolder view   x000D          return holder  x000D        x000D   x000D       Override x000D      public void onBindViewHolder MyViewHolder holder  int position    x000D          Information current data get position   x000D          holder title setText current title   x000D          holder icon setImageResource current iconId   x000D   x000D        x000D   x000D       Override x000D      public int getItemCount     x000D          return data size    x000D        x000D      class MyViewHolder extends RecyclerView ViewHolder implements View OnClickListener  x000D          TextView title  x000D          ImageView icon  x000D   x000D          public MyViewHolder View itemView    x000D              super itemView   x000D              title  TextView itemView findViewById R id listText   x000D             icon  ImageView itemView findViewById R id listIcon   x000D              itemView setClickable true   x000D              itemView setOnClickListener this   x000D            x000D   x000D           Override x000D          public void onClick View v    x000D   x000D              Toast makeText context  The Item Clicked is    getPosition   Toast LENGTH SHORT  show    x000D            x000D         x000D    x000D   x000D   x000D    Log  cat error after implementing Konrad s solution      02-27 15 24 52 833  D AndroidRuntime 1630   --------- beginning of crash 02-27 15 24 52 834  E AndroidRuntime 1630   FATAL EXCEPTION  main 02-27 15 24 52 834  E AndroidRuntime 1630   Process  com snappy stevekamau snappy  PID  1630 02-27 15 24 52 834  E AndroidRuntime 1630   java lang RuntimeException  Unable to start activity ComponentInfo com snappy stevekamau snappy com snappy stevekamau snappy YourActivity   java lang NullPointerException  Attempt to invoke virtual method  java lang CharSequence android support v7 widget Toolbar getTitle    on a null object reference 02-27 15 24 52 834  E AndroidRuntime 1630       at android app ActivityThread performLaunchActivity ActivityThread java 2298  02-27 15 24 52 834  E AndroidRuntime 1630       at android app ActivityThread handleLaunchActivity ActivityThread java 2360  02-27 15 24 52 834  E AndroidRuntime 1630       at android app ActivityThread access 800 ActivityThread java 144  02-27 15 24 52 834  E AndroidRuntime 1630       at android app ActivityThread H handleMessage ActivityThread java 1278  02-27 15 24 52 834  E AndroidRuntime 1630       at android os Handler dispatchMessage Handler java 102  02-27 15 24 52 834  E AndroidRuntime 1630       at android os Looper loop Looper java 135  02-27 15 24 52 834  E AndroidRuntime 1630       at android app ActivityThread main ActivityThread java 5221  02-27 15 24 52 834  E AndroidRuntime 1630       at java lang reflect Method invoke Native Method  02-27 15 24 52 834  E AndroidRuntime 1630       at java lang reflect Method invoke Method java 372  02-27 15 24 52 834  E AndroidRuntime 1630       at com android internal os ZygoteInit MethodAndArgsCaller run ZygoteInit java 899  02-27 15 24 52 834  E AndroidRuntime 1630       at com android internal os ZygoteInit main ZygoteInit java 694  02-27 15 24 52 834  E AndroidRuntime 1630   Caused by  java lang NullPointerException  Attempt to invoke virtual method  java lang CharSequence android support v7 widget Toolbar getTitle    on a null object reference 02-27 15 24 52 834  E AndroidRuntime 1630       at android support v7 internal widget ToolbarWidgetWrapper  lt init gt  ToolbarWidgetWrapper java 95  02-27 15 24 52 834  E AndroidRuntime 1630       at android support v7 internal widget ToolbarWidgetWrapper  lt init gt  ToolbarWidgetWrapper java 88  02-27 15 24 52 834  E AndroidRuntime 1630       at android support v7 internal app ToolbarActionBar  lt init gt  ToolbarActionBar java 84  02-27 15 24 52 834  E AndroidRuntime 1630       at android support v7 app ActionBarActivityDelegateBase setSupportActionBar ActionBarActivityDelegateBase java 175  02-27 15 24 52 834  E AndroidRuntime 1630       at android support v7 app ActionBarActivity setSupportActionBar ActionBarActivity java 92  02-27 15 24 52 834  E AndroidRuntime 1630       at com snappy stevekamau snappy YourActivity onCreate YourActivity java 18  02-27 15 24 52 834  E AndroidRuntime 1630       at android app Activity performCreate Activity java 5933  02-27 15 24 52 834  E AndroidRuntime 1630       at android app Instrumentation callActivityOnCreate Instrumentation java 1105  02-27 15 24 52 834  E AndroidRuntime 1630       at android app ActivityThread performLaunchActivity ActivityThread java 2251  02-27 15 24 52 834  E AndroidRuntime 1630           10 more 02-27 15 24 52 839  W ActivityManager 464     Force finishing activity com snappy stevekamau snappy  YourActivity 02-27 15 24 52 841  W ActivityManager 464     Force finishing activity com snappy stevekamau snappy  MainActivity

User · Answer

x000D   x000D  public class AdapterClass extends RecyclerView Adapter lt AdapterClass MyViewHolder gt    x000D      private LayoutInflater inflater  x000D      private Context context  x000D  List lt Information gt data  Collections emptyList    x000D      public AdapterClass Context context List lt Information gt data   x000D          this context context  x000D   x000D          inflater  LayoutInflater from context   x000D          this data data  x000D        x000D       Override x000D      public MyViewHolder onCreateViewHolder ViewGroup parent  int viewType    x000D         View view  inflater inflate R layout custom row parent false   x000D          MyViewHolder holder new MyViewHolder view   x000D          return holder  x000D        x000D   x000D       Override x000D      public void onBindViewHolder MyViewHolder holder  int position    x000D          Information current data get position   x000D          holder title setText current title   x000D          holder icon setImageResource current iconId   x000D   x000D        x000D   x000D       Override x000D      public int getItemCount     x000D          return data size    x000D        x000D      class MyViewHolder extends RecyclerView ViewHolder implements View OnClickListener  x000D          TextView title  x000D          ImageView icon  x000D   x000D          public MyViewHolder View itemView    x000D              super itemView   x000D              title  TextView itemView findViewById R id listText   x000D             icon  ImageView itemView findViewById R id listIcon   x000D              itemView setClickable true   x000D              itemView setOnClickListener this   x000D            x000D   x000D           Override x000D          public void onClick View v    x000D   x000D              Toast makeText context  The Item Clicked is    getPosition   Toast LENGTH SHORT  show    x000D            x000D         x000D    x000D   x000D   x000D     x000D   x000D  public class AdapterClass extends RecyclerView Adapter lt AdapterClass MyViewHolder gt    x000D      private LayoutInflater inflater  x000D      private Context context  x000D  List lt Information gt data  Collections emptyList    x000D      public AdapterClass Context context List lt Information gt data   x000D          this context context  x000D   x000D          inflater  LayoutInflater from context   x000D          this data data  x000D        x000D       Override x000D      public MyViewHolder onCreateViewHolder ViewGroup parent  int viewType    x000D         View view  inflater inflate R layout custom row parent false   x000D          MyViewHolder holder new MyViewHolder view   x000D          return holder  x000D        x000D   x000D       Override x000D      public void onBindViewHolder MyViewHolder holder  int position    x000D          Information current data get position   x000D          holder title setText current title   x000D          holder icon setImageResource current iconId   x000D   x000D        x000D   x000D       Override x000D      public int getItemCount     x000D          return data size    x000D        x000D      class MyViewHolder extends RecyclerView ViewHolder implements View OnClickListener  x000D          TextView title  x000D          ImageView icon  x000D   x000D          public MyViewHolder View itemView    x000D              super itemView   x000D              title  TextView itemView findViewById R id listText   x000D             icon  ImageView itemView findViewById R id listIcon   x000D              itemView setClickable true   x000D              itemView setOnClickListener this   x000D            x000D   x000D           Override x000D          public void onClick View v    x000D   x000D              Toast makeText context  The Item Clicked is    getPosition   Toast LENGTH SHORT  show    x000D            x000D         x000D    x000D   x000D   x000D

User · Answer

iconView    ImageView  itemLayoutView                      findViewById R id iconId            itemLayoutView setOnClickListener new View OnClickListener                  Override             public void onClick View v                     Intent intent   new Intent v getContext    SecondPage class                   v getContext   startActivity intent                   Toast makeText v getContext     os version is      feed getTitle    Toast LENGTH SHORT  show

User · Answer

This question has been asked long ago but none of the answers above helped me out  though Milad Moosavi s answer was very close  To open a new activity from a certain position on the recycler view  the following code may help         Override     public void onBindViewHolder  NonNull TripViewHolder holder  int position            Trip currentTrip   trips get position            holder itemView setOnClickListener new View OnClickListener                  Override             public void onClick View v                    Intent intent   new Intent v getContext    EditTrip class                   v getContext   startActivity intent                                      holder itemView setOnLongClickListener new View OnLongClickListener                  Override             public boolean onLongClick View v                    Intent intent   new Intent v getContext    ReadTripActivity class                   v getContext   startActivity intent                    return false

User · Answer

public class DataAdapter extends RecyclerView Adapter lt DataAdapter ViewHolder gt    private ArrayList lt Android gt  android  Context context  private ImageView img  public DataAdapter Context contextN  ArrayList lt Android gt  android        this android   android      this context contextN      Override public DataAdapter ViewHolder onCreateViewHolder ViewGroup viewGroup  int i        View view   LayoutInflater from viewGroup getContext    inflate R layout adapter list  viewGroup  false       return new ViewHolder view       Override public void onBindViewHolder DataAdapter ViewHolder viewHolder  int i         viewHolder tv name setText android get i  getOffer         viewHolder tv version setText android get i  getOfferType         Picasso with context  load android get i  getImg    transform new CircleTransform    into img        Override public int getItemCount         return android size       public class ViewHolder extends RecyclerView ViewHolder      private TextView tv name tv version tv api level       public ViewHolder View view            super view            tv name    TextView view findViewById R id tv name           tv version    TextView view findViewById R id tv version           img    ImageView  view findViewById R id img                    context   itemView getContext                     itemView setOnClickListener new View OnClickListener                          Override                     public void onClick View view                             int itemPosition   getLayoutPosition                            Toast makeText context       itemPosition  Toast LENGTH SHORT  show                            Intent intent   new Intent context Show class                           intent putExtra  name     android get itemPosition  getOffer                             intent putExtra  img     android get itemPosition  getImg                             context startActivity intent

User · Answer

Simply you can do it easy    You just need to get the context of your activity  here  from your View     Create intent getting the context of your View and the class where you want to go Intent intent   new Intent view getContext    YourClass class      start the activity from the view context view getContext   startActivity intent     If you are inside activity  otherwise pass context to this funtion   Remember that you need to modify AndroidManifest xml and place the activity      lt activity         android name   YourClass          android label  Label for your activity  gt  lt  activity gt

User · Answer

The problem occurs in declaring context  while using Glide for ImageView or While using intent in recyclerview for item onClick  I Found this working for me which helps me to Declare context to use in Glide or Intent or Toast   public class NoteAdapter extends FirestoreRecyclerAdapter lt Note NoteAdapter NoteHolder gt     Context context   public NoteAdapter  NonNull FirestoreRecyclerOptions lt Note gt  options        super options       Override protected void onBindViewHolder  NonNull NoteHolder holder  int position   NonNull Note model        holder r tv setText model getTitle         Glide with CategoryActivity context  load model getImage    into holder r iv        context   holder itemView getContext         holder itemView setOnClickListener new View OnClickListener              Override         public void onClick View v                Intent i   new Intent context  SuggestActivity class               context startActivity i                          NonNull  Override public NoteHolder onCreateViewHolder  NonNull ViewGroup parent  int viewType         View v   LayoutInflater from parent getContext    inflate R layout row category parent false        return new NoteHolder v      public static class NoteHolder extends RecyclerView ViewHolder       TextView r tv      ImageView r iv       public NoteHolder  NonNull View itemView            super itemView            r tv   itemView findViewById R id r tv           r iv   itemView findViewById R id r iv

User · Answer

you can implement your adapter s onClickListener     public class AdapterClass extends RecyclerView Adapter lt AdapterClass MyViewHolder gt implements View OnClickListener   and use interface with method in it  public interface mClickListener       public void mClick View v  int position       and in your onClick method call the method in the interface and pass it the view and position   in your main activity implement that interface   public class MainActivity extends ActionBarActivity implements AdapterClass mClickListener   and override that method    Override public void onCommentsClick View v  int position        final Intent intent   new Intent this  OtherActivity class       as its better to manage your activity transition by the activity not other classes

User · Answer

This question has been asked long ago  anyway i would write an easy answer may it help someone   The easiest way to attach a clickListener to items of RecyclerView is within the Adapter as below   public class MyAdapter extends RecyclerView Adapter lt AdapterClass MyViewHolder gt            Override public void onBindViewHolder MyViewHolder holder  int position        holder itemView setOnClickListener new View OnClickListener                  Override             public void onClick View view                    Intent intent   new Intent view getContext    YourActivity Class                   startActivity intent

User · Answer

You can  but don t need to because the ViewHolder class is not static  create field context as is shown below   private final Context context   public MyViewHolder View itemView        super itemView       context   itemView getContext                and on your onClick method just call sth  like below    Override public void onClick View v                   final Intent intent      switch  getAdapterPostion             case 0             intent    new Intent context  FirstActivity class              break           case 1              intent    new Intent context  SecondActivity class               break                         default             intent    new Intent context  DefaultActivity class              break             context startActivity intent       or   Override public void onClick View v                   final Intent intent      if  getAdapterPosition      sth          intent    new Intent context  OneActivity class         else if  getPosition      sth2          intent    new Intent context  SecondActivity class         else          intent    new Intent context  DifferentActivity class             context startActivity intent

User · Answer

Sample  in MyRecyclerViewAdapter  add method   public interface ItemClickListener      void onItemClick View view  int position      In MainActivity java   Override public void onItemClick View view  int position    Context context view getContext    Intent intent new Intent    switch  position       case 0          intent    new Intent context  ChildActivity class           context startActivity intent           break

[android] How to open a different activity on recyclerView item onclick

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