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Interface And Cloud Messaging in Android | CodersArts

Interface :

i. In android interface is very useful concept with the interface we are able to access List of items in Recycler view adapter in simple word we can easily access multiple users like whatsapp we are able to send the message multiple users.

ii. we are able to implement onClickListenr and onLongClick Listener into the same user with onclick listener we are able to go to the user location or another activity

iii. with the on long Click listener we are able to perform another activity into the

same account.

iv, user is able to go to the location of his friend if he is lost

v. Able to communicate multiple users at same time.

Cloud Messaging :

i. With the help of Retrofit api we are able to friend request to the another user

ii. We are able to communicate with the users with this api and user is able to send to communicate with another user easily and able to send details over messaging platform.

Code Interface :

public interface ItemClickListener { void onClick(View view,int position); void onItemLongClick(View view,int position); }

public class MyAdapter extends RecyclerView.ViewHolder implements View.OnClickListener, View.OnLongClickListener { public TextView textEmail; ItemClickListener itemClickListener; public void setItemClickListener(ItemClickListener itemClickListener) { this.itemClickListener = itemClickListener; } public MyAdapter(@NonNull View itemView) { super(itemView); textEmail=itemView.findViewById(; itemView.setOnClickListener(this); } @Override public void onClick(View v) { itemClickListener.onClick(v,getAdapterPosition()); } @Override public boolean onLongClick(View v) { itemClickListener.onItemLongClick(v, getAdapterPosition()); return true; } } inside OnbindActivity

holder.setItemClickListener(new ItemClickListener() { @Override public void onClick(View view, int position) { if(!model.getEmail().equals(FirebaseAuth.getInstance().getCurrentUser().getEmail())) { Toast.makeText(Online.this, "Lets Go", Toast.LENGTH_SHORT).show(); Intent map=new Intent(Online.this,MapsActivity.class); map.putExtra("email",model.getEmail()); map.putExtra("lat",mlocation.getLatitude()); map.putExtra("lng",mlocation.getLongitude()); startActivity(map); } } @Override public void onItemLongClick(View view, int position) { showDialogRequest(model); } });

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