How to make a horizontal scrollable view? - android

I have a horizontal scroll view containing a linear layout.
Something like this:
<HorizontalScrollView
android:fillViewport="true"
android:id="#+id/product_hsv"
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:measureAllChildren="false"
android:scrollbars="none">
<LinearLayout
android:id="#+id/product_container_layout"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:orientation="horizontal" />
</HorizontalScrollView>
What I want to do is to add n number of the same layout to display
product collection in a Horizontal scroll view.
The picture below will give you an idea of what I have done so far.
For this, I have added product collection view to R.id.product_container_layout.
String[] productCollectionArr = new String[]{"Shirt", "Jewellary", "Moto X Play", "Ellis Flat"};
for (int i = 0; i < productCollectionArr.length; i++) {
LinearLayout parentLayout = (LinearLayout) findViewById(R.id.product_container_layout);
View child = getLayoutInflater().inflate(R.layout.item_product, null);//child.xml
parentLayout.addView(child);
}
for (int i = 0; i < productCollectionArr.length; i++) {
LinearLayout eachProductLayout = (LinearLayout) findViewById(R.id.product_container_layout);
((TextView) eachProductLayout.findViewById(R.id.product_name_tv)).setText(productCollectionArr[i]);
}
But the problem is passing values. Since each view added to product_container_layout has the same ids. Therefore only first element gets the value from the product collection array.
What I can do is generate view id for each view and its element and map these ids to certain name so that I could access them by id.
Is this the correct methodology or should I do something else?.

You need to add this first :
<HorizontalScrollView
android:id="#+id/galleryImages"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/chim_image_view_divider"
android:layout_marginTop="#dimen/twenty"
android:focusable="false"
android:layout_centerInParent="true"
android:focusableInTouchMode="false"
android:scrollbars="none" >
<LinearLayout
android:id="#+id/Images_scroller_view_linear_layout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center"
android:orientation="horizontal" >
</LinearLayout>
</HorizontalScrollView>
ImageScrollerViewLinearLayout = (LinearLayout) findViewById(R.id.Images_scroller_view_linear_layout);
ImageScrollerViewLinearLayout.removeAllViews();
- addImagesTo list:
void addImages() {
ImageScrollerViewLinearLayout.removeAllViews();
int i = 0;
final float scale = this.getResources().getDisplayMetrics().density;
int pixels = 0;
if (myImagesList != null && myImagesList.size() > 0) {
for (i = 0; i < myImagesList.size(); i++) {
ImageView imageView = new ImageView(this);
pixels = (int) (60 * scale + 0.5f);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(pixels, pixels);
params.setMargins(5, 0, 0, 0);
imageView.setLayoutParams(params);
imageView.setScaleType(ScaleType.CENTER_CROP);
imageView.setOnClickListener(new SelectNewSingleImageClickListener());
imageView.setImageResource(myImagesList.get(i));
ImageScrollerViewLinearLayout.addView(imageView, i);
}
}
}

So, you need to populate your view before adding to container or save links to all items. It will looks like this:
LinearLayout parentLayout=(LinearLayout)findViewById(R.id.linearLayout1);
for (int i = 0; i < items.size(); i ++) {
View child = getLayoutInflater().inflate(R.layout.item_grid, null);//child.xml
((TextView) child.findViewById(R.id.name)).setText(items.get(i).getName(); // where R.id.name is a textView in your child.xml layout.
parentLayout.addView(child);
}
after all, you can access to your elements by index, if you want to change it:
parentLayout.getChildAt(index)
But if you have a lot of items, it's not good idea. In this case you will not recycle your views and will consume a lot of memory.
I suggest to use recyclerview from support library.

add code in xml file
<org.lucasr.twowayview.TwoWayView
android:id="#+id/lvItems"
style="#style/TwoWayView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_toLeftOf="#+id/linearLayout3"
android:cacheColorHint="#android:color/transparent"
android:divider="#android:color/transparent"
android:drawSelectorOnTop="false"
android:padding="10dp" >
</org.lucasr.twowayview.TwoWayView>

You can use **DevSmart** library for horizontal listview which is similar to **ListView**.
https://github.com/dinocore1/DevsmartLib-Android

Related

Issues with ScrollView and setting layouts

Here I'm new to android development. Don't mind if something isn't clear.
I did enough research on this issue, before marking this as duplicate please update the solution.
Here I'm adding an image with arrangement of layouts what I want to implement here.
Here the listView is being shown as only 1 item. If I scroll, all the items will be scrolled in the shown in this height.
Here my xml structure is
<LinearLayout>(parent)
<ScrollView>
<LinearLayout>
<LinearLayout>
weight: __
-----------
</LinearLayout>
<ListView>
h:match_parent
w:wrap_content
weight:__
</ListView>
<LinearLayout>
weight:__
--------------
</LinearLayout>
</LinearLayout>
</ScrollView>
</LinearLayout>
I'm getting numbers of data sets from DB and have to show those sets in middle of the both LinearLayouts. For now I'm using ListView but seems impossible to use here as my expectation.
Please suggest whether I can I perform in ListView here or how can I use numbers of LinearLayout blocks for each dataset?
Update
This is what I expect as shown in the pic.
Try this
<LinearLayout>(parent)
<NestedScrollView>
<LinearLayout>
<LinearLayout>
w:wrap_content
h:wrap_content
</LinearLayout>
<ListView>
w:match_p__arent
h:match_p__arent
weight:1
NestedScroll:true
</ListView>
<LinearLayout>
w:match_p__arent
h:match_p__arent
weight:1
</LinearLayout>
</LinearLayout>
</NestedScrollView>
</LinearLayout>
You need this method for your ListView
public static void setListViewHeightBasedOnItems(ListView target_Listview, int limit) // LIMIT 0 FOR SHOWING ALLL CONTENTS
{
if (limit == 0) {
ListAdapter listAdapter = target_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++) {
// if(itemPos < 4)
// {
View item = listAdapter.getView(itemPos, null, target_Listview);
item.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
Log.e("" + itemPos, "" + item.getMeasuredHeight());
totalItemsHeight += item.getMeasuredHeight();
// }
}
// Get total height of all item dividers.
int totalDividersHeight = target_Listview.getDividerHeight() * (numberOfItems - 1);
// Set list height.
ViewGroup.LayoutParams params = target_Listview.getLayoutParams();
params.height = totalItemsHeight + totalDividersHeight;
target_Listview.setLayoutParams(params);
target_Listview.requestLayout();
// return true;
}
else {
}
}
else {
ListAdapter listAdapter = target_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++) {
if (itemPos < limit) {
View item = listAdapter.getView(itemPos, null, target_Listview);
item.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
Log.e("" + itemPos, "" + item.getMeasuredHeight());
totalItemsHeight += item.getMeasuredHeight();
}
}
// Get total height of all item dividers.
int totalDividersHeight = target_Listview.getDividerHeight() * (numberOfItems - 1);
// Set list height.
ViewGroup.LayoutParams params = target_Listview.getLayoutParams();
params.height = totalItemsHeight + totalDividersHeight;
target_Listview.setLayoutParams(params);
target_Listview.requestLayout();
}
}
}
After setting adapter on ListView Just call the method and Pass your ListView in the parameters with your list size as second parameter.
One Suggestion from my side : You should use RecyclerView Instead of listview . Just need to write one line for that after setting up everything(adapter etc)
recyclerView.HasFixedSize();
Hope my answer will help.
Might need more clarification on what exactly it is you're trying to accomplish.
If the ListView is supposed to be longer and to scroll through more items on the list, I might recommend using the RecyclerView. Its a little bit more setup, but allows for a lot more complex layouts to be created based off the concept.
There are a lot of great references to learn the ways of RecyclerView if you want to search further:
this one might help you setup the solution to your problem
How to create RecyclerView with multiple view type?
Android Developer website tutorial for RecyclerView
https://developer.android.com/guide/topics/ui/layout/recyclerview.html
Post from Code Path that helped me supplement all of it together.
https://guides.codepath.com/android/using-the-recyclerview
try this way
<LinearLayout>
<LinearLayout>
<LinearLayout>
weight: __
-----------
</LinearLayout>
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<ListView>
h:match_parent
w:wrap_content
weight:__
</ListView>
</ScrollView>
<LinearLayout>
weight:__
--------------
</LinearLayout>
</LinearLayout>
I have tried in my Android studio and mine is working i am able to scroll view .mine is little bit deffrent then you.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/colorAccent">
<LinearLayout
android:id="#+id/first"
android:layout_width="match_parent"
android:layout_height="50dp"
android:background="#color/colorAccent"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center_horizontal"
android:text="#string/hello" />
</LinearLayout>
<ListView
android:id="#+id/listview"
android:layout_width="match_parent"
android:layout_height="250dp"
android:background="#color/black_overlay"
android:layout_below="#+id/first" />
<LinearLayout
android:id="#+id/second"
android:layout_width="match_parent"
android:layout_height="550dp"
android:background="#color/colorAccent"
android:layout_below="#+id/listview"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center_horizontal"
android:text="#string/hello" />
</LinearLayout>
</RelativeLayout>
</ScrollView>

Add view horizontaly and verticaly in LinearLayout dynamically

I want to add dynamic view into a Horizontal LinearLayout. But my issue is if there is no space at Horizontal it should automatically placed on vertically.
My Image
My Expected Result
My Codes are
for (int j = 0; j < jobDet.getKeywords().length; j++) {
RelativeLayout tr_head = (RelativeLayout) getLayoutInflater().inflate(R.layout.tag_lay, null);
TextView label_date = (TextView) tr_head.findViewById(R.id.tag_name);
label_date.setText(jobDet.getKeywords()[j]);
keywordL.addView(tr_head, new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT,
RelativeLayout.LayoutParams.WRAP_CONTENT));
}
My "tag_lay.xml"
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<TextView
android:layout_width="wrap_content"
android:layout_height="30dp"
android:id="#+id/tag_name"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:background="#drawable/round_edit_box"
android:text=" PHP "
android:gravity="center"
android:lines="1"
android:layout_marginRight="5dp"/>
</RelativeLayout>
You can not do that with single LinearLayout because it has either VERTICAL or HORIZONTAL orientation. I would suggest you to take a look at google's FlexboxLayout. Its a library which provides a layout where you can achieve similar view. You can add this library by adding below line to your app level gradle file:
compile 'com.google.android:flexbox:0.1.3'
You can change the keywordL to FlexboxLayout from LinearLayout. A sample code for container layout can be something like below:
<com.google.android.flexbox.FlexboxLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/flexbox_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:alignContent="flex_start"
app:alignItems="flex_start"
app:flexWrap="wrap"/>
You can change the value of alignContent, alignItems and flexWrap according to your requirement. Although this should work because it is working for me. While adding the childs you can do something like below:
for (int j = 0; j < jobDet.getKeywords().length; j++) {
RelativeLayout tr_head = (RelativeLayout) getLayoutInflater().inflate(R.layout.tag_lay, keywordL, false );
TextView label_date = (TextView) tr_head.findViewById(R.id.tag_name);
label_date.setText(jobDet.getKeywords()[j]);
keywordL.addView(tr_head);
}
Please let me know if you have trouble implementing.

How to inflate view in other layout?

I have to create a horizental scrollview that contains boxes. Each box could at most contains only three items. So my logic is:
Create list of box in Horizental ScrollView
<HorizontalScrollView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fillViewport="true">
<LinearLayout
android:id="#+id/ll_list"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal">
</LinearLayout>
</HorizontalScrollView>
Create box.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:id="#+id/ll_box"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
</LinearLayout>
</LinearLayout>
Create item.xml for the item (in box)
In Java
For example, there are 7 item so I need 3 boxes.
Here is my code,
public void initList(){
View box = getLayoutInflater().inflate(R.layout.box, null);
LinearLayout ll_box = (LinearLayout)box.findViewById(R.id.ll_box);
int item = 7;
int idx = item/3; //idx is a number of boxes
if (item%3!=0)
idx++;
for (int i=0; i<idx; i++ ){
for(int j=0; j<3; j++){
ll_box.addView(LayoutInflater.from(this).inflate(R.layout.item, null));
}
ll_list.addView(ll_box);
}
}
And the problem is that I got error at
ll_list.addView(ll_box);
java.lang.IllegalStateException: The specified child already has a parent. You must call removeView() on the child's parent first.
If you don't understand the problem please ask me. I really need your help. Thank you.
You have to create a new box View on each step.
Something like this:
for (int i=0; i<idx; i++ ){
View box = getLayoutInflater().inflate(R.layout.box, null);
LinearLayout ll_box = (LinearLayout)box.findViewById(R.id.ll_box);
for(int j=0; j<3; j++){
ll_box.addView(LayoutInflater.from(this).inflate(R.layout.item, null));
}
ll_list.addView(box); //here add `box` instead of `ll_box`!!
}

How to show image in table row based on size

Have 2x2 grid(Dynamic using TableLayout) need to show image on that. now based on image size, means-- if image fit for 1 cell means 1 cell,else big means 2 cells or 4 cells based on size( I know how many cells it will occupy)
i can show image in 1 cell, but problem is if image need 2 cells(1st column) how can show image in 2cell(With out disturbing the grid)
Without disturbing the grid, the workaround I see is to dynamically set image on top of your TableLayout.
Then you can archive this:
I've uploaded the code of the test project here;
You initialize overlappingImage and once you need to set image to your cell - you just add it to the layout and setting height and width params based on number of cells you want to fill.
TableLayout generates dynamically, the cell's layout xml:
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content"
android:layout_width="wrap_content">
<View
android:layout_margin="4dp"
android:background="#aacc00"
android:layout_height="40dp"
android:layout_width="40dp"/>
</FrameLayout>
The Activity's layout:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/container"
android:padding="16dp"
android:orientation="vertical"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<TableLayout
android:id="#+id/tableLayout"
android:layout_width="match_parent"
android:layout_height="280dp"/>
<LinearLayout
android:id="#+id/buttonsLinearLayout"
android:layout_below="#+id/tableLayout"
android:layout_marginTop="16dp"
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<Button
android:text="1x1"
android:id="#+id/button11"
android:onClick="onClick11"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<Button
android:text="4x1"
android:id="#+id/button21"
android:onClick="onClick41"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<Button
android:text="2x3 at (2;2)"
android:id="#+id/button12"
android:onClick="onClick32"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<Button
android:text="2x2"
android:id="#+id/button22"
android:onClick="onClick22"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
</LinearLayout>
</RelativeLayout>
And the Activity code to handle button clicks & generates table:
public class MainActivity extends AppCompatActivity {
RelativeLayout container;
int cellWidth = 0, cellHeight = 0;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
TableLayout tableLayout = (TableLayout) findViewById(R.id.tableLayout);
tableLayout.setStretchAllColumns(true);
for (int i = 0; i < 4; i++) {
TableRow tableRow = new TableRow(this);
for (int j = 0; j < 10; j++) {
LayoutInflater layoutInflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View cell = layoutInflater.inflate(R.layout.table_cell, null, false);
if (cellHeight == 0 ) {
cell.measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED);
cellWidth = cell.getMeasuredWidth();
cellHeight = cell.getMeasuredHeight();
}
tableRow.addView(cell);
}
tableLayout.addView(tableRow);
}
container = (RelativeLayout)findViewById(R.id.container);
overlappingImage = new ImageView(this);
overlappingImage.setScaleType(ImageView.ScaleType.FIT_XY);
}
ImageView overlappingImage;
private void restoreTableLayout() {
container.removeView(overlappingImage);
}
public void onClick11(View view) {
restoreTableLayout();
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(cellWidth, cellHeight);
overlappingImage.setLayoutParams(params);
overlappingImage.setImageResource(R.drawable.horizontal_cat);
container.addView(overlappingImage);
}
public void onClick41(View view) {
restoreTableLayout();
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(cellWidth*4, cellHeight);
overlappingImage.setLayoutParams(params);
overlappingImage.setImageResource(R.drawable.horizontal_cat);
container.addView(overlappingImage);
}
public void onClick32(View view) {
restoreTableLayout();
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(cellWidth*3, cellHeight*2);
params.setMargins(cellWidth*2, cellHeight*2, 0 ,0);
overlappingImage.setLayoutParams(params);
overlappingImage.setImageResource(R.drawable.vertical_cat);
container.addView(overlappingImage);
}
public void onClick22(View view) {
restoreTableLayout();
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(cellWidth*2, cellHeight*2);
overlappingImage.setLayoutParams(params);
overlappingImage.setImageResource(R.drawable.horizontal_cat);
container.addView(overlappingImage);
}
}
I hope, it helps.
Create separate layout files for rows that would need one cell and two cell as follows:
one_cell_table_row.xml (Notice the android:layout_span="2" for the ImageView
<?xml version="1.0" encoding="utf-8"?>
<TableRow
android:background="#drawable/bg_gray"
android:layout_marginTop="5dp"
xmlns:android="http://schemas.android.com/apk/res/android">
<ImageView
android:id="#+id/imgMyImage"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="10dp"
android:layout_span="2" />
</TableRow>
two_cell_table_row.xml (The TextView placed just as a placeholder for the second cell) (No layout_span required here as in the above layout)
<?xml version="1.0" encoding="utf-8"?>
<TableRow xmlns:android="http://schemas.android.com/apk/res/android">
<ImageView
android:id="#+id/imgMyImage"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="10dp" />
<TextView
android:layout_width="0dp"
android:layout_height="wrap_content"
android:padding="5dp"
android:layout_weight="1"
android:text="..."
android:textColor="#767575"
android:id="#+id/txtJustAPlaceholder"
android:textSize="14dp" />
</TableRow>
Note: The id for the ImageView to be kept same in both layout for the java code below to work correctly.
The above is assuming your grid is 2x2. If your grid size is different create more layout for each kind of row you want and add extra conditions in the java code below.
Adding the TableRow with the right layout inflated:
Then programatically determine which layout needs to be inflated. Inflate the required layout for table row and add it to your table layout:
Following code is assuming that you are using a fragnemt. If you are doing directly in an activity replace code to work for Activity accordingly.
TableLayout table = (TableLayout) getView().findViewById(R.id.youtTableLayout);
if(<your image size needs two cells>) {
TableRow row = (TableRow) LayoutInflater.from(getActivity().getApplicationContext())
.inflate(R.layout.two_cell_table_row, null);
}
else if(<your image size needs one cell) {
TableRow row = (TableRow) LayoutInflater.from(getActivity().getApplicationContext())
.inflate(R.layout.one_cell_table_row, null);
}
...
...
// add more conditions and respective layouts as you need.
...
...
ImageView myImgView = (ImageView) row.findViewById(R.id.txtCrdSectionHeader);
// set the image for your image view here.
table.addView(row);
table.requestLayout();
Again, the above was assuming that your TableLayout has a 2x2 grid. If you plan to use a different one, update the layout files for TableRows we created above accordingly or set them dynamically using your java code.
You can calculate the image size and the screen size at runtime.Based on the calculations you can set the table properties at runtime. For example if the image is going to take two columns set the span property on that row programmatically.
I would suggest for your requirement you can consider creating the layout in code itself-rather than using any xml.
You can also have a look at Recycler view. It has more powerful ways to control the layout of the children. Have a look at this video-Mastering Recycler View -It is trying to do similar thing what you are looking for.

Android ListView rows in ScrollView not fully displayed - clipped

I encountered a problem when embedding a ListView inside a ScrollView, or at least that's where I guess the problem comes from. The ListView element is a fairly simple one:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/item_root"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#drawable/general_background_list_middle"
android:paddingTop="4dp"
android:paddingBottom="4dp"
android:paddingRight="0dp"
android:paddingLeft="0dp">
<ImageView
android:id="#+id/chat_friends_avatar"
android:layout_width="45dp"
android:layout_height="45dp"
android:layout_marginLeft="7dp"
android:layout_marginRight="8dp"
android:paddingRight="0dp"
android:paddingLeft="0dp"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:src="#drawable/friends_icon_avatar_default"/>
<TextView
android:id="#+id/chat_message_text"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_toRightOf="#id/chat_friends_avatar"
android:layout_alignParentTop="true"
android:layout_marginRight="35dp"
android:maxLines="10"
android:textSize="12dp"/>
<TextView
android:id="#+id/chat_friend_name"
android:layout_width="140dp"
android:layout_height="wrap_content"
android:layout_marginTop="3dp"
style="#style/SubText"
android:layout_toRightOf="#id/chat_friends_avatar"
android:layout_below="#id/chat_message_text" />
<TextView
android:id="#+id/chat_message_time"
android:layout_width="80dp"
android:layout_height="wrap_content"
android:layout_marginRight="8dp"
android:layout_marginTop="3dp"
style="#style/SubText"
android:layout_alignParentRight="true"
android:layout_below="#id/chat_message_text" />
</RelativeLayout>
However, when I embed a list of such elements in a ScrollView, in between some other elements, the rows are not fully displayed, they are clipped (see image below) if the text is wrapped. The ListView is instantiated as follows in the ScrollView:
<ListView
android:id="#+id/info_chat_listview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
android:cacheColorHint="#color/frame_background_color"
android:clickable="false"
android:divider="#null"
android:footerDividersEnabled="false"
android:focusable="false" >
</ListView>
If the height of the ListView is set to "wrap_content" only the first element is shown. That's why I'm using a method to calculate the height of the rows of the list:
private int getCommentsListHeight() {
if (mChatAdapter != null && mChatAdapter.getCount() != 0) {
if (mChatList != null) {// && mCommentsListItemHeight == 0) {
mCommentsListItemHeight = 0;
for (int i = 0; i < mChatAdapter.getCount(); i++) {
// Get view item height
View viewItem = mChatAdapter
.getView(i, new View(OnAirActivity.this), mChatList);
viewItem.measure(0, 0);
Logger.d(LOGTAG, "View " + i + " measured height = " + viewItem.getMeasuredHeight());
mCommentsListItemHeight += viewItem.getMeasuredHeight();
}
}
//return mChatAdapter.getCount() * mCommentsListItemHeight;
return mCommentsListItemHeight;
} else {
return 0;
}
}
Unfortunately, in case when the text inside the TextView is wrapped, even over several lines, the height of the row element returned by the getMeasuredHeight() method is constant. Also the getLineCount() called on the TextView inside the row element returns 1 even if the text is wrapped.
On the other hand, if this ListView is embedded in a LinearLayout, everything works fine and the full list is displayed with no clipping.
Do you have any suggestions as to what might be wrong here? I really don't like the idea of manually measuring the height of the list elements and it apparently doesn't work but why can't android nicely stretch the ListView inside the ScrollView to fit it all in there?
Clipped list:
Use this method created by https://stackoverflow.com/users/205192/dougw
public static void setListViewHeightBasedOnChildren(ListView listView) {
ListAdapter listAdapter = listView.getAdapter();
if (listAdapter == null) {
// pre-condition
return;
}
int totalHeight = 0;
for (int i = 0; i < listAdapter.getCount(); i++) {
View listItem = listAdapter.getView(i, null, listView);
listItem.measure(0, 0);
totalHeight += listItem.getMeasuredHeight();
}
ViewGroup.LayoutParams params = listView.getLayoutParams();
params.height = totalHeight + (listView.getDividerHeight() * (listAdapter.getCount() - 1));
listView.setLayoutParams(params);
}
It's a BAD practice to encapsulate ListView within a ScrollView because ListView itself contains scrolling capabilities. You should implement a solution that does not contain such hierarchy of views and I hope it will do the magic :)
Here resource of main layout with ScrollView:
<ScrollView android:layout_height="fill_parent" android:layout_width="fill_parent">
<LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" android:id="#+id/parentLayout"/>
</ScrollView>
Here the code to insert items:
parentLayout.removeAllViews();
LayoutInflater inflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
for (int i = comments.size() - 1; i >= 0; i--) {
CommentInfo comment = comments.get(i);
View view = inflater.inflate(your_resource_id, null, false);
TextView commentsContent =(TextView)view.findViewById(R.id.commentContent);
if (commentsContent != null) {
String data = String.format("%s (by %s, %s)", comment.getCommentText(), comment.getUserName(),
commentsContent.setTextSize(st.getTextSize());
commentsContent.setText(data);
}
parentLayout.addView(view, 0);
}
I had the same problem in my project.You need to create simple LinearLayout inside ScrollView. After that you need create new View with your listview item xml using LayoutInflater. After creation put all data in new View and add to LinearLayout as child view:
linearLayot.addView(newView, position_you_need).
Hope it would help you!
I took the recommendation of not using a ListView element inside a ScrollView to heart and decided to use a slightly brute force method to achieve what I need. Since there is a constant number of up to five list rows that need to be displayed I removed the ListView instantiation from the xml file and replaced it with five instances of rows:
<include android:id="#+id/info_comment_1" layout="#layout/chat_single_message" />
<include android:id="#+id/info_comment_2" layout="#layout/chat_single_message" />
<include android:id="#+id/info_comment_3" layout="#layout/chat_single_message" />
<include android:id="#+id/info_comment_4" layout="#layout/chat_single_message" />
<include android:id="#+id/info_comment_5" layout="#layout/chat_single_message" />
In the Activity class I declare five placeholders for these views:
private RelativeLayout mChatMessages[] = new RelativeLayout[COMMENTS_NUMBER];
and initialize them with:
mChatMessages[0] = (RelativeLayout) mMoreInfoLayout.findViewById(R.id.info_comment_1);
mChatMessages[1] = (RelativeLayout) mMoreInfoLayout.findViewById(R.id.info_comment_2);
mChatMessages[2] = (RelativeLayout) mMoreInfoLayout.findViewById(R.id.info_comment_3);
mChatMessages[3] = (RelativeLayout) mMoreInfoLayout.findViewById(R.id.info_comment_4);
mChatMessages[4] = (RelativeLayout) mMoreInfoLayout.findViewById(R.id.info_comment_5);
Then, whenever a new message is received I use the ChatAdapter (the same I used for the ListView previously) and call its getView() method:
protected void updateChatMessages() {
int msgCount = mChatAdapter.getCount();
for (int i = 0; i < COMMENTS_NUMBER; i++) {
if (msgCount <= i) {
mChatMessages[i].setVisibility(View.GONE);
} else {
mChatMessages[i] = (RelativeLayout) mChatAdapter.getView(i, mChatMessages[i], null);
mChatMessages[i].setVisibility(View.VISIBLE);
}
}
}
I don't inflate the pariculat views ever again since the only thing that changes is the content of each row, not the layout. This means there is no performance penalty here.
This is basically a manual implementation of a ListView with a limited maximum number of elements. This time, however, ScrollView is able to fit them nicely and nothing gets clipped.
For a dynamic number of rows the approach suggested by Layko could be employed with the views being instantiated programatically and added to the LinearLayout inside the ScrollView.
I can see the ListView is inside a ViewPager; one other simple approach to resolving this issue is to add
app:layout_behavior="#string/appbar_scrolling_view_behavior" to the ViewPager in your layout xml as seen below.
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
To prevent the same behavior at the bottom of the list, you can also add android:layout_marginBottom="?attr/actionBarSize" to the ViewPager like so
<android.support.v4.view.ViewPager
android:id="#+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:layout_marginBottom="?attr/actionBarSize"/>
This is coming late, but I hope it helps any other person.
try it..
after create all view add bellow line for ScrollView location on screen (x,y)
ScrollView scrollView = (ScrollView)findViewById(R.id.scrollView);
scrollView.smoothScrollTo(0,0);// top location zero index
I had a similar problem. I have a
RelativeLayout
listView
includeLayout
where I include some bottom nav beneath the listView with this
<include
android:id="#+id/includeLayout"
layout="#layout/bottom_nav_bar"
and my listView was clipped - not taking the full height available between the header and bottom nav. I tried various xml settings suggested in this and other threads, but what worked for me was to add
android:layout_alignBottom="#+id/includeLayout"
to my listView. That seemed to pull the listView down to the top of the bottom nav, so that the listView is now using the full available height (and it scrolls as needed).
This works for me
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="#dimen/activity_vertical_margin">
<TextView
android:id="#+id/tv_status"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:textSize="17sp"
android:text="#string/text_list_devices" />
<ListView
android:id="#+id/lv_paired"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="#dimen/activity_vertical_margin"
android:cacheColorHint="#00000000"
android:layout_above="#+id/signup_t"
android:layout_below="#id/tv_status"
/>
<Button
android:id="#+id/signup_t"
style="?android:textAppearanceSmall"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="20dp"
android:textColor="#android:color/white"
android:layout_alignParentBottom="true"
android:text="Print All Records"
android:typeface="sans"
android:layout_marginLeft="45dp"
android:layout_marginRight="45dp"
android:textSize="24sp"
android:background="#drawable/selector_for_button"
android:textStyle="bold" />
</RelativeLayout>
This is BAD practice. But there are some situations we can not avoid using that. For example dynamic e-commerce layouts we may put multiple lists or recycle views but you don't want to scroll inside a single item height (if accidentally wanted!!). I faced this kind of problem. I fixed using a simple way. I don't tell this is the correct way but it may help some.
!! I used to recycle the view.
(01) Create an Interface to return view height.
public interface AfterViewLoadListener {
void onViewHeightMeasured(int height, String mode);
}
(02) implement with your activity
public class *Activity extends AppCompatActivity implements AfterViewLoadListener{
/** your codes **/
final SimpleListRecycleAdapter order_adapter = new SimpleListRecycleAdapter(this,"ORDER");
}
#Override
public void onViewHeightMeasured(int height, String mode) {
if(mode.equals("ORDER") && height > 0){
recycleView.setMinimumHeight(height);
}
}
(03) inside the recycle view custom adapter
AfterViewLoadListener viewLoadListener = null;
public SimpleListRecycleAdapter(AfterViewLoadListener listener, String mode) {
if(listener instanceof AfterViewLoadListener){
viewLoadListener = listener;
}
this.mode = mode;
}
(04) override the onViewAttachedToWindow method
#Override
public void onViewAttachedToWindow(#NonNull SimpleListViewHolder holder) {
super.onViewAttachedToWindow(holder);
View view = holder.itemView;
view.measure(0, 0);
this.viewMinHeight = view.getMeasuredHeight();
if(!firstFlag){
firstFlag = true;
viewLoadListener.onViewHeightMeasured(this.viewMinHeight*filtered.length(),mode);
}
}
(05) That's it. It worked for me.

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