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Setting ListView list heights dynamically based on multi-line text inside

I am using the base adapter for a dynamic dataset in a list. I tried to dynamically set the height of the list. It works great if the text inside it is a separate line. However, if the text image is multi-line, the height is not set properly. Height is set only with single-line text viewing. How to correctly set the height of list items containing multi-line text. Here is the code:

Fragment Code:

ListView mlistNews=(ListView)rootView.findViewById(R.id.news_listView); mlistNews.setAdapter(new NewsAdapter(getActivity(),params_news)); Utils.setListViewHeightBasedOnItems(mlistNews);

Useful feature:

 public static boolean setListViewHeightBasedOnItems(ListView listView) { ListAdapter listAdapter = listView.getAdapter(); if (listAdapter != null) { int numberOfItems = listAdapter.getCount(); // Get total height of all items. int totalItemsHeight = 0; for (int itemPos = 0; itemPos < numberOfItems; itemPos++) { View item = listAdapter.getView(itemPos, null, listView); item.measure(View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED), View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED)); totalItemsHeight += item.getMeasuredHeight(); } // Get total height of all item dividers. int totalDividersHeight = listView.getDividerHeight() * (numberOfItems - 1); // Get padding int totalPadding = listView.getPaddingTop() + listView.getPaddingBottom(); // Set list height. ViewGroup.LayoutParams params = listView.getLayoutParams(); params.height = totalItemsHeight + totalDividersHeight + totalPadding; listView.setLayoutParams(params); listView.requestLayout(); return true; } else { return false; } }

dashboard_list_news.xml

 <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="horizontal" android:layout_width="match_parent" android:layout_height="wrap_content" android:padding="5dp"> <TextView android:layout_width="0dp" android:id="@+id/news_item_text" android:layout_weight="1" android:layout_height="wrap_content" android:layout_gravity="left|center_vertical" android:layout_marginLeft="5dp"/> <ImageView android:layout_width="wrap_content" android:layout_height="wrap_content" android:src="@drawable/chevron" android:layout_gravity="center_vertical|right" android:layout_marginLeft="5dp" android:layout_marginRight="10dp" /> </LinearLayout>

Listview

 <ListView android:layout_width="match_parent" android:layout_height="wrap_content" android:background="@drawable/rounded_shape_list" android:id="@+id/news_listView" android:paddingTop="5dp" android:paddingBottom="5dp" android:divider="#6DCB99" android:dividerHeight="1dp" />
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5 answers

As Teemu points out, you need to limit the width. Sample code below.

 float px = 300 * (listView.getResources().getDisplayMetrics().density); item.measure(View.MeasureSpec.makeMeasureSpec((int)px, View.MeasureSpec.AT_MOST), View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
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Could the problem be this call:

 item.measure(View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED), View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED))

You do not limit the width here, so the TextView expands to any width required to display all the text on one line. So will you always get a height equal to a single line text? I think you should limit the width here to what is available as a list.

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You can try with this custom list to exclude the listhieght function with a multi-line text problem.

  <namespace.epicurio.NestedListView android:id="@+id/listComments" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginBottom="2dp" android:divider="#000000" android:dividerHeight="1.0sp"> </namespace.epicurio.NestedListView> public class NestedListView extends ListView implements OnTouchListener, OnScrollListener { private int listViewTouchAction; private static final int MAXIMUM_LIST_ITEMS_VIEWABLE = 99; public NestedListView(Context context, AttributeSet attrs) { super(context, attrs); listViewTouchAction = -1; setOnScrollListener(this); setOnTouchListener(this); } @Override public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) { if (getAdapter() != null && getAdapter().getCount() > MAXIMUM_LIST_ITEMS_VIEWABLE) { if (listViewTouchAction == MotionEvent.ACTION_MOVE) { scrollBy(0, -1); } } } @Override public void onScrollStateChanged(AbsListView view, int scrollState) { } @Override protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { super.onMeasure(widthMeasureSpec, heightMeasureSpec); int newHeight = 0; final int heightMode = MeasureSpec.getMode(heightMeasureSpec); int heightSize = MeasureSpec.getSize(heightMeasureSpec); if (heightMode != MeasureSpec.EXACTLY) { ListAdapter listAdapter = getAdapter(); if (listAdapter != null && !listAdapter.isEmpty()) { int listPosition = 0; for (listPosition = 0; listPosition < listAdapter.getCount() && listPosition < MAXIMUM_LIST_ITEMS_VIEWABLE; listPosition++) { View listItem = listAdapter.getView(listPosition, null, this); //now it will not throw a NPE if listItem is a ViewGroup instance if (listItem instanceof ViewGroup) { listItem.setLayoutParams(new LayoutParams( LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT)); } listItem.measure(widthMeasureSpec, heightMeasureSpec); newHeight += listItem.getMeasuredHeight(); } newHeight += getDividerHeight() * listPosition; } if ((heightMode == MeasureSpec.AT_MOST) && (newHeight > heightSize)) { if (newHeight > heightSize) { newHeight = heightSize; } } } else { newHeight = getMeasuredHeight(); } setMeasuredDimension(getMeasuredWidth(), newHeight); } @Override public boolean onTouch(View v, MotionEvent event) { if (getAdapter() != null && getAdapter().getCount() > MAXIMUM_LIST_ITEMS_VIEWABLE) { if (listViewTouchAction == MotionEvent.ACTION_MOVE) { scrollBy(0, 1); } } return false; } }
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Try this code:

 listview.post(new Runnable() { @Override public void run() { calculateListHeight(listview.getWidth()); } }); public void calculateListHeight(int width) { final ListAdapter adapter = listview.getAdapter(); // Calculate the height of the ListView to display all items int totalHeight = listview.getPaddingTop() + listview.getPaddingBottom(); for (int i = 0; i < adapter.getCount(); i++) { View item = adapter.getView(i, null, this); item.measure( View.MeasureSpec.makeMeasureSpec(width, MeasureSpec.AT_MOST), View.MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED) ); totalHeight += item.getMeasuredHeight(); } ViewGroup.LayoutParams params = listview.getLayoutParams(); params.height = totalHeight + (listview.getDividerHeight() * (adapter.getCount() - 1)); listview.setLayoutParams(params); listview.requestLayout(); }
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for @AlexanderAgeichenko Here is my implementation with @baradas and the question

  int totalItemsHeight = 0; float px = (customListView.getResources().getDisplayMetrics().density); totalItemsHeight = (int)px; Log.d(YOUR_TAG, " datta forloop ... px " + px); Log.d(YOUR_TAG, " datta forloop ... totalItemsHeight = (int)px= " + totalItemsHeight); for (int itemPos = 0; itemPos < datta.length(); itemPos++) { View item = CustomListAdptr.getView(itemPos, null, customListView); //// item.measure(View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED), //// View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED)); item.getMeasuredHeightAndState(); Log.d(YOUR_TAG, " datta forloop item.getHeight() " + item.getHeight()); Log.d(YOUR_TAG, " datta forloop item.getMeasuredHeight() " + item.getMeasuredHeight()); Log.d(YOUR_TAG, " datta forloop item.getMeasuredHeightAndState() " + item.getMeasuredHeightAndState()); int itmHeight = item.getHeight(); Log.d(YOUR_TAG, " datta forloop ... itmHeight " + itmHeight); item.measure(View.MeasureSpec.makeMeasureSpec((int)px, View.MeasureSpec.AT_MOST), View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED)); totalItemsHeight = item.getMeasuredHeight(); // Log.d(YOUR_TAG, " datta forloop ... item.getMeasuredHeight() " + item.getMeasuredHeight()); Log.d(YOUR_TAG, " datta forloop ... totalItemsHeight=item.getMeasuredHeight() " + totalItemsHeight); } Log.d(YOUR_TAG, " datta forloop ... totalItemsHeight == " + totalItemsHeight); // Get total height of all item dividers. int totalDividersHeight = customListView.getDividerHeight() * (numberOfItems - 1); // Get padding int totalPadding = customListView.getPaddingTop() + customListView.getPaddingBottom(); // Set list height. ViewGroup.LayoutParams params = customListView.getLayoutParams(); params.height = totalItemsHeight + totalDividersHeight + totalPadding; customListView.setLayoutParams(params); customListView.requestLayout(); customListView.canScrollList(0);

And was delivered

 D/YOUR_TAG: onViewCompleted() if(success) setting the list data D/YOUR_TAG: datta counts 3 D/YOUR_TAG: datta forloop ... px 2.0 D/YOUR_TAG: datta forloop ... totalItemsHeight = (int)px= 2 D/YOUR_TAG: datta forloop item.getMeasuredHeightAndState() 0 D/YOUR_TAG: datta forloop item.getMeasuredHeight() 0 D/YOUR_TAG: datta forloop item.getHeight() 0 D/YOUR_TAG: datta forloop ... itmHeight 0 D/YOUR_TAG: datta forloop ... totalItemsHeight=item.getMeasuredHeight() 1709 D/YOUR_TAG: datta forloop item.getMeasuredHeightAndState() 0 D/YOUR_TAG: datta forloop item.getMeasuredHeight() 0 D/YOUR_TAG: datta forloop item.getHeight() 0 D/YOUR_TAG: datta forloop ... itmHeight 0 D/YOUR_TAG: datta forloop ... totalItemsHeight=item.getMeasuredHeight() 1709 D/YOUR_TAG: datta forloop item.getMeasuredHeightAndState() 0 D/YOUR_TAG: datta forloop item.getMeasuredHeight() 0 D/YOUR_TAG: datta forloop item.getHeight() 0 D/YOUR_TAG: datta forloop ... itmHeight 0 D/YOUR_TAG: datta forloop ... totalItemsHeight=item.getMeasuredHeight() 1709 D/YOUR_TAG: datta forloop ... totalItemsHeight == 1709 D/YOUR_TAG: getView() -> unit_option= 0 :: class java.lang.String

With 110 float px = 110 * (customListView.getResources (). GetDisplayMetrics (). Density);

 D/YOUR_TAG: onViewCompleted() if(success) setting the list data D/YOUR_TAG: datta counts 3 D/YOUR_TAG: datta forloop ... px 220.0 D/YOUR_TAG: datta forloop ... totalItemsHeight = (int)px= 220 D/YOUR_TAG: datta forloop item.getMeasuredHeightAndState() 0 D/YOUR_TAG: datta forloop item.getMeasuredHeight() 0 D/YOUR_TAG: datta forloop item.getHeight() 0 D/YOUR_TAG: datta forloop ... itmHeight 0 D/YOUR_TAG: datta forloop ... totalItemsHeight=item.getMeasuredHeight() 159 D/YOUR_TAG: datta forloop item.getMeasuredHeightAndState() 0 D/YOUR_TAG: datta forloop item.getMeasuredHeight() 0 D/YOUR_TAG: datta forloop item.getHeight() 0 D/YOUR_TAG: datta forloop ... itmHeight 0 D/YOUR_TAG: datta forloop ... totalItemsHeight=item.getMeasuredHeight() 159 D/YOUR_TAG: datta forloop item.getMeasuredHeightAndState() 0 D/YOUR_TAG: datta forloop item.getMeasuredHeight() 0 D/YOUR_TAG: datta forloop item.getHeight() 0 D/YOUR_TAG: datta forloop ... itmHeight 0 D/YOUR_TAG: datta forloop ... totalItemsHeight=item.getMeasuredHeight() 159 D/YOUR_TAG: datta forloop ... totalItemsHeight == 159
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Source: https://habr.com/ru/post/984169/

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