Increase the height of recyclerview dynamically on item add

Question

Display pic

In my app, i want to increase the height of recycler view dynamically. As i add new item under complaints, the height of recycler view should increase. Is there a way to do it? Please help me with this. Thanks in advance.

<LinearLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical" 
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_weight="1"
        android:orientation="vertical">

        <TextView
            android:id="@+id/complaint_text_view"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@color/background_line"
            android:padding="@dimen/layout_margin"
            android:text="Complaints"
            android:textColor="@color/textColorFullBlack" />

        <LinearLayout
            android:id="@+id/complaints_container"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_marginBottom="@dimen/layout_margin"
            android:layout_weight="1">

            <android.support.v7.widget.RecyclerView
                android:id="@+id/complaint_recycler_view"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginLeft="@dimen/layout_margin"
                android:divider="@color/toolBarBackground"
                android:groupIndicator="@android:color/transparent" />

        </LinearLayout>

        <TextView
            android:id="@+id/instructions_text_view"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@color/background_line"
            android:padding="@dimen/layout_margin"
            android:text="Instructions"
            android:textColor="@color/textColorFullBlack" />

        <FrameLayout
            android:id="@+id/instructions_container"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_marginBottom="@dimen/layout_margin"
            android:layout_weight="1">

            <android.support.v7.widget.RecyclerView
                android:id="@+id/instructions_recycler_view"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_marginLeft="@dimen/layout_margin"
                android:divider="@color/toolBarBackground"
                android:groupIndicator="@android:color/transparent" />

        </FrameLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <LinearLayout
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_weight="1"
                android:background="@color/colorPrimary"
                android:orientation="horizontal">

                <in.palmpower.videocon.uicommon.widget.EditText
                    android:id="@+id/search_text_field"
                    style="@style/FormEditText"
                    android:layout_width="0dp"
                    android:layout_gravity="center_vertical"
                    android:layout_margin="@dimen/one_dp"
                    android:layout_weight="1"
                    android:background="@android:color/white"
                    android:inputType="textFilter"
                    android:padding="@dimen/search_edit_text_padding"
                    android:privateImeOptions="nm" />

                <Button
                    android:id="@+id/add_button"
                    android:layout_width="wrap_content"
                    android:layout_height="match_parent"
                    android:layout_gravity="center_vertical"
                    android:background="?attr/selectableItemBackground"
                    android:contentDescription="@string/edittext_hint_search"
                    android:padding="@dimen/button_padding"
                    android:text="@string/add_button_string"
                    android:textColor="@color/textColorWhite" />

            </LinearLayout>

        </LinearLayout>

    </LinearLayout>

</LinearLayout>

Answer 1

i suggest you to put teh recyclerview in any other layout (Relative layout is preferable). Then change recyclerview's height/width as match parent to that layout and set teh parent layout's height/width as wrap content. it works for me

Answer 2

Got stuck on same issue, i was using RecyclerView with wrap_content inside LinearLayout, i change LinearLayout to RelativeLayout and it set RecyclerView Height Based On Children.

Answer 3

This will work for you

RecyclerView mRecyclerView 
             = (RecyclerView) findViewById(R.id.complaint_recycler_view);
int originalItemSize = iteList.size();

ViewGroup.LayoutParams params = mRecyclerView.getLayoutParams();

if (itemList.size() > originalItemSize ){
    params.height = params.height + 100;
    originalItemSize  = itemList.size();
    mRecyclerView.setLayoutParams(params); 
}

Answer 4

WRAP_CONTENT will not work if you want recyclerView to take part of screen. If you want other content to be there below recyclerView, you can put recyclerView inside LinearLayout and use the following code to change the height dynamically.

I assume you are using a list(complaint_list) for storing complaints.Adjust the complaint_height accordingly

ViewGroup.LayoutParams params = mRecyclerView.getLayoutParams();
int complaint_height=400;
if (complaints_list.size() > 2) {
params.height = ((complaint_list.size() - 1) * 100) + complaint_height;
} else {
  params.height = complaint_height+100;
}
mRecyclerView.setLayoutParams(params);