I have designed this layout layout in which i have a NestdScrollView which contains 3 RecycleViews. On each RecycleView item click appears another NestedRecycleView appears with is inside ScrollView of height 200dp. NestedRecycleView scroll does not work. In the image there are more than 4 "list items" but only 4 are shown, it is not scrollable. When I scroll the parent NestdScrollView scrolls.
Someone commented about this being bad design, if anyone has a idea how to approach this kindly share your ideas also.
RecycleView Adapter
public class MyRecyclerViewAdapter extends RecyclerView.Adapter<MyRecyclerViewAdapter.ViewHolder> {
private List<String> mData;
private LayoutInflater mInflater;
private ItemClickListener mClickListener;
private Context context;
// data is passed into the constructor
MyRecyclerViewAdapter(Context context, List<String> data) {
this.mInflater = LayoutInflater.from(context);
this.mData = data;
this.context=context;
}
// inflates the row layout from xml when needed
@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View view = mInflater.inflate(R.layout.list_item_text, parent, false);
return new ViewHolder(view);
}
// binds the data to the TextView in each row
@Override
public void onBindViewHolder(ViewHolder holder, int position) {
String animal = mData.get(position);
holder.myTextView.setText(animal);
}
// total number of rows
@Override
public int getItemCount() {
return mData.size();
}
// stores and recycles views as they are scrolled off screen
public class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
TextView myTextView;
RecyclerView recyclerViewNested;
ScrollView nestedScrollViewRecycleView;
ViewHolder(View itemView) {
super(itemView);
myTextView = itemView.findViewById(R.id.text_view);
recyclerViewNested = itemView.findViewById(R.id.recycle_view_nested);
nestedScrollViewRecycleView= itemView.findViewById(R.id.nested_scrollview_in_recycleview);
myTextView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
ArrayList<String> list12 = new ArrayList<String>(
Arrays.asList("list item", "list item", "list item","list item","list item", "list item", "list item","list item","list item", "list item", "list item","list item","list item", "list item", "list item","list item","list item", "list item", "list item","list item"));
nestedScrollViewRecycleView.setVisibility(View.VISIBLE);
MyRecyclerViewAdapter adapter = new MyRecyclerViewAdapter(context, list12);
LinearLayoutManager layoutManager = new LinearLayoutManager(context, recyclerViewNested.VERTICAL, false);
recyclerViewNested.setLayoutManager(layoutManager);
recyclerViewNested.setAdapter(adapter);
}
});
//itemView.setOnClickListener(this);
}
@Override
public void onClick(View view) {
if (mClickListener != null) mClickListener.onItemClick(view, getAdapterPosition());
}
}
// convenience method for getting data at click position
String getItem(int id) {
return mData.get(id);
}
// allows clicks events to be caught
void setClickListener(ItemClickListener itemClickListener) {
this.mClickListener = itemClickListener;
}
// parent activity will implement this method to respond to click events
public interface ItemClickListener {
void onItemClick(View view, int position);
}
}
MainActivity
public class MainActivity extends AppCompatActivity {
public static final int SWIPE_THRESHOLD = 100;
public static final int SWIPE_VELOCITY_THRESHOLD = 100;
private static final String TAG = "MainActivity";
ArrayList<String> list2;
NestedScrollView NestedScroll1;
ConstraintLayout constraintLayout;
RecyclerView recyclerView1;
//vars
private boolean mSwiping = false;
private float mDownX = 0;
private float xCoOrdinate;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
recyclerView1 = findViewById(R.id.firstColumn);
RecyclerView recyclerView2 = findViewById(R.id.secondColumn);
RecyclerView recyclerView3 = findViewById(R.id.thirdColumn);
NestedScroll1 = findViewById(R.id.scrollview_nested);
ArrayList<String> list12 = new ArrayList<String>(
Arrays.asList("A", "column1", "test1", "1", "2", "3", "1", "2", "3", "1", "2", "3", "1", "2", "3", "1", "2", "3", "2", "3", "1", "2", "3", "1", "2", "3", "1", "2", "3", "1", "2", "3"));
list2 = new ArrayList<String>(
Arrays.asList("B", "column3", "test3", "111", "211", "311", "111", "211", "311", "111", "211", "311", "111", "211", "311", "111", "211", "311", "311", "111", "211", "311", "111", "211", "311", "111", "211", "311"));
// set up the RecyclerView
MyRecyclerViewAdapter adapter = new MyRecyclerViewAdapter(this, list12);
configRecyclerView(recyclerView1, adapter);
configRecyclerView(recyclerView2, adapter);
configRecyclerView(recyclerView3, adapter);
recyclerView2.addOnItemTouchListener(getOnItemTouchListener());
recyclerView3.addOnItemTouchListener(getOnItemTouchListener());
}
private void configRecyclerView(RecyclerView recyclerView, MyRecyclerViewAdapter adapter) {
LinearLayoutManager layoutManager = new LinearLayoutManager(getApplicationContext(), recyclerView.VERTICAL, false);
recyclerView.setLayoutManager(layoutManager);
recyclerView.setAdapter(adapter);
}
private RecyclerView.OnItemTouchListener getOnItemTouchListener() {
return new RecyclerView.OnItemTouchListener() {
@SuppressLint("LongLogTag")
@Override
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent ev) {
Log.d("TableView OnswipeTouchListener: ", " recycleViewOdds item onInterceptTouchEvent");
switch (ev.getAction()) {
case MotionEvent.ACTION_DOWN:
mDownX = ev.getX();
mSwiping = false;
//coordinate for moving
xCoOrdinate = constraintLayout.getX() - ev.getRawX();
break;
case MotionEvent.ACTION_CANCEL:
//return true;
case MotionEvent.ACTION_UP:
if (mSwiping) {
/// this return true block touch event
Log.d("TableView OnswipeTouchListener:", "Recycle view odds OnItemTouchListener: you swiped!");
return true;
}
break;
case MotionEvent.ACTION_MOVE:
float xMove = ev.getX();
float xDelta = Math.abs(xMove - mDownX);
if (xDelta > 5) {
mSwiping = true;
// this one also
return true;
}
break;
}
return false;
}
private Rect rect;
@SuppressLint("LongLogTag")
@Override
public void onTouchEvent(RecyclerView rv, MotionEvent event) {
int limitLeft = constraintLayout.getLeft();
int limitRight = constraintLayout.getRight();
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
break;
case MotionEvent.ACTION_MOVE:
// Log.d("OnSwipeTouchListener Class", "recycleViewOdds action move");
//Restrict move to constraintLayout width
// Log.d("Recycleview TouchListener windowwidth: ", limitLeft + ", " + limitRight);
float range = event.getRawX() + xCoOrdinate;
if (Math.abs(range) > limitLeft - 350 && Math.abs(range) < limitRight - 250) {
//constraintLayout.scrollTo((int) (event.getRawX() + xCoOrdinate),0);
constraintLayout.animate().x(event.getRawX() + xCoOrdinate).setDuration(0).start();
constraintLayout.setAlpha(0.7f);
}
break;
case MotionEvent.ACTION_UP:
Log.d("TableView OnswipeTouchListener:", "recycleViewOdds action up");
constraintLayout.animate().alpha(1).translationX(0).translationY(0);
break;
case MotionEvent.ACTION_CANCEL:
constraintLayout.animate().alpha(1).translationX(0).translationY(0);
Log.d("TableView OnswipeTouchListener:", "recycleViewOdds action cancel");
break;
}
}
@SuppressLint("LongLogTag")
@Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
Log.e("TableView OnswipeTouchListener:", "recycleViewOdds item touch intercept disallow request");
}
};
}
}
activity_main.xml
<androidx.core.widget.NestedScrollView
android:id="@+id/scrollview_nested"
android:layout_width="match_parent"
android:layout_height="0dp"
android:text="Hello World!"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent">
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/firstColumn"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_centerHorizontal="true"
android:nestedScrollingEnabled="false"
app:layout_constraintEnd_toStartOf="@id/secondColumn"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/secondColumn"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
app:layout_constraintEnd_toStartOf="@id/thirdColumn"
app:layout_constraintLeft_toRightOf="@id/firstColumn"
app:layout_constraintTop_toTopOf="parent" />
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/thirdColumn"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginLeft="16dp"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintLeft_toRightOf="@id/secondColumn"
app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>
</androidx.core.widget.NestedScrollView>
list_item_text.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="10dp">
<TextView
android:id="@+id/text_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="20sp"
android:layout_marginBottom="8dp"/>
<ScrollView
android:id="@+id/nested_scrollview_in_recycleview"
android:layout_width="match_parent"
android:visibility="gone"
android:background="@color/colorAccent"
android:layout_height="200dp">
<androidx.recyclerview.widget.RecyclerView
android:id="@+id/recycle_view_nested"
android:layout_width="match_parent"
android:nestedScrollingEnabled="false"
android:layout_height="wrap_content"/>
</ScrollView>
</LinearLayout>
