I am using a RecylerView to populate CardView items. I am noticing that the
RecyclerView is generating a NullPointer here, as for some reason the
RecyclerView references the parent view and not the individual CardView.
I believe the error is occurring here:
public ViewHolder(View v) {
super(v);
userAvatar = (ImageView) findViewById(R.id.profile_image);
userID = (TextView) findViewById(R.id.user_ID);
userComment = (TextView)
findViewById(R.id.user_comment_textview);
}
Here is my individual CardView XML (individual_comment.xml):
<android.support.v7.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android";
xmlns:app="http://schemas.android.com/tools";
xmlns:card_view="http://schemas.android.com/apk/res-auto";
android:id="@+id/card_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="5dp"
card_view:cardCornerRadius="4dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/comment_backgroud_grey"
android:orientation="horizontal"
android:padding="@dimen/individual_comment_padding">
<de.hdodenhof.circleimageview.CircleImageView
android:id="@+id/profile_image"
android:layout_width="@dimen/avatar_image_dimension"
android:layout_height="@dimen/avatar_image_dimension"
android:layout_gravity="center_vertical"
android:layout_marginLeft="8dp"
android:layout_marginStart="8dp"
android:src="@drawable/empty_avatar_256x256"
app:civ_border_color="#FF000000"
app:civ_border_width="@dimen/circle_image_border_width" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<TextView
android:id="@+id/user_ID"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="16dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="16dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:text="Name"
android:textColor="@color/black"
android:textSize="@dimen/individual_comment_userID_textsize"
android:textStyle="bold" />
<TextView
android:id="@+id/user_comment_textview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginEnd="16dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="16dp"
android:layout_marginStart="8dp"
android:hint="This text should be the comment that I Type,
not the default text I set in the XML."
android:paddingBottom="1dp"
android:textColor="@color/black"
android:textSize="@dimen/individual_comment_userComment_textsize" />
</LinearLayout>
</LinearLayout>
</android.support.v7.widget.CardView>
I am receiving a NullPointer for this line:
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
//nullponter, I believe it is not recognizing "user Comment"
holder.userComment.setText(mDataSet.get(position).getUserComment());
String x = mDataSet.get(position).getUserComment();
Log.v("ON_BIND_VIEW", "THE STRING IS " + x);
Log.v("THE_POSITION", "THE POSITION IS " + position);
}
onCreateViewHolder:
@Override
public MyAdapter.ViewHolder onCreateViewHolder(ViewGroup parent,
int viewType) {
// create a new view
View v = LayoutInflater.from(parent.getContext())
.inflate(R.layout.individual_comment, parent, false);
// set the view's size, margins, paddings and layout parameters
return new ViewHolder(v);
}
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