Intent from adapter: Calling startActivity() from outside of an Activity context requires the FLAG_ACTIVITY_NEW_TASK flag

Issue

Reaching out to ask for your help on the following.

I have a RecyclerView and in my adapter I'm trying to start a new activity. But I'm getting the following error:

android.util.AndroidRuntimeException: Calling startActivity() from outside of an Activity  context requires the FLAG_ACTIVITY_NEW_TASK flag. Is this really what you want?

Here is my code:

private Context mContext;

...

public EntitiesListAdapter(ArrayList<Entity> myDataset, Context context) {
    mDataset = myDataset;
    mContext = context;
}

...

holder.view.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {
        Intent intent = new Intent(mContext, ViewEntityActivity.class);
        Bundle bundle = new Bundle();
        bundle.putParcelable("entity", row);
        mContext.startActivity(intent);
    }
});

And I'm setting the adapter this way:

RecyclerView.Adapter<EntitiesListAdapter.MyViewHolder> mAdapter = new EntitiesListAdapter(entities, getApplicationContext());

But already tried like private Context context and using context instead of getApplicationContext().

Do you identify what I'm missing?

Thank you in advance.

Solution

If you are using your Adapter in your Activity then simply use:

RecyclerView.Adapter<EntitiesListAdapter.MyViewHolder> mAdapter = new EntitiesListAdapter(entities, MainActivity.this);

If you want to use getApplicationContext(), then you have to add FLAG_ACTIVITY_NEW_TASK to the startActivity’s Intent like:

Intent intent = new Intent(mContext, ViewEntityActivity.class);
intent.put("entity", row);
intent.setFlags(FLAG_ACTIVITY_NEW_TASK)
mContext.startActivity(intent);

Answered By - DarShan