Why intent is not passed from adapter class?

问题

Actually I'm trying to pass intent from adapter class on click of item . Although it may sound a normal or foolish question but I'm stuck in it from last 3 4 days . At first I was thinking that the itemView is not receiving the click but then I tried to put a toast inside the onClick() method but the strange part is it's toasting the message without any problem or error but it's not passing intent . I don't know why this strange behavior is happening . I've tried to search a lot of questions in SO but none of them were helpful.

Code:

 //opening img on clik
        holder.itemView.setClickable(true);
        holder.itemView.setFocusable(true);
        holder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Toast.makeText(ctx,"testing",Toast.LENGTH_SHORT).show();
                Bundle b = new Bundle();
                b.putString("what", "show_post");
                b.putString("timelineData", gson.toJson(totalList));
                b.putInt("position",holder.getAdapterPosition());
                Intent i = new Intent(ctx, ProfileHolder.class);
                i.putExtras(b);
                i.putExtra("Open", "starred");
                i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
                ctx.startActivity(i);
            }
        });

回答1:

• remove i.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); you don't need that
• is ProfileHolder an Activity? It doesn't seem to be one.
• if ProfileHolder is really an Activity, check that it is registered in the AndroidManifest.xml file.

回答2:

Make interface between adapter and activity its best way to pass intent usefull link: "https://github.com/Androidsignal/Android-Retrofit" see in ada

回答3:

I think you are not passing context properly.

Do Below steps: 1.Declare Context globally in the adapter.

Context context;

2.In onCreateViewHolder write below code.

 context = viewGroup.getContext();

3.Now on click

context.startActivity(new Intent(context, Activity.class);

来源：https://stackoverflow.com/questions/49990416/why-intent-is-not-passed-from-adapter-class