im trying to display 3 TextViews as a custom row design in a ListView. Unfortunatly, only 2 TextViews ( row_title and row_postcode_city) are visible...
Maybe somebody has an idea?
Regards,
float
Code of my ArrayAdapter:
private class PartnerAdapter extends ArrayAdapter<Partner> {
private ArrayList<Partner> items;
public PartnerAdapter(Context context, int textViewResourceId, ArrayList<Partner> items) {
super(context, textViewResourceId, items);
this.items = items;
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
if (v == null) {
LayoutInflater vi = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = vi.inflate(R.layout.partner_suche_ergebnis_row, parent, false);
}
Partner o = items.get(position);
if (o != null) {
TextView title = (TextView) v.findViewById(R.id.row_title);
TextView subtitle = (TextView) v.findViewById(R.id.row_subtitle);
TextView postcode_city = (TextView) v.findViewById(R.id.row_postcode_city);
if (title != null) {
title.setText(o.getTitle());
}
if(subtitle != null){
subtitle.setText(o.getSubtitle());
}
if(postcode_city != null){
subtitle.setText(o.getPostcode() + " " + o.getCity());
}
}
return v;
}
}
XML of the custom row design:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="?android:attr/listPreferredItemHeight"
android:padding="0dip"><!--
<ImageView
android:id="#+id/icon"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_marginRight="6dip"
android:src="#drawable/icon" />
--><LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_weight="1"
android:layout_height="fill_parent">
<TextView
android:id="#+id/row_title"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
style="bold"/>
<TextView
android:id="#+id/row_subtitle"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
<TextView
android:id="#+id/row_postcode_city"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
</LinearLayout>
Try to use the following xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="0dip">
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_weight="1"
android:layout_height="fill_parent">
<TextView
android:id="#+id/row_title"
android:text="1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
style="bold"/>
<TextView
android:id="#+id/row_subtitle"
android:text="2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
<TextView
android:text="3"
android:id="#+id/row_postcode_city"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
</LinearLayout>
Check it now.
Change your LinearLayout to "wrap_content" on layout_height
<LinearLayout
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_weight="1"
android:layout_height="wrap_content">
Also, I don't know why you have a LinearLayout inside a LinearLayout. Since this xml is only for individual rows. Each row will be a horizontal LinearLayout, the second one being unnecessary as ListView automatically lists rows vertically.
Finally, the root LinearLayout should use minHeight for the default Item Height, not layout_height.
android:minHeight="?android:attr/listPreferredItemHeight"
This should be your xml file (unless you really need the second LinearLayout for some odd reason)
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:minHeight="?android:attr/listPreferredItemHeight"
android:padding="0dip">
<TextView
android:id="#+id/row_title"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
style="bold"/>
<TextView
android:id="#+id/row_subtitle"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
<TextView
android:id="#+id/row_postcode_city"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
/>
</LinearLayout>
Sorry for offtopic, but I here some useful tips from me
You have a LOT of needless (and flat out wrong) stuff going on here:
Partner o = items.get(position);
if (o != null) {
You should get something for every position, if item retuns null that means you are doing something wrong. In your case, if you get null you just return reused old, or brand new row, which will confuse the user by displaying the old data, or no data at all.
if (title != null) {
You have 2 ways of getting View object of your row, by inflating, or getting it from recycler (convertView). And recycler will ALLWAYS return the right type of View, so those check are useless since your components will always be found.
Related
I'm building an app for a news website, I have created a ListView and a layout for each item, which has quite a bit of white space, but on the list view all the white space is removed.
Here's what I mean: http://imgur.com/a/mLuuE
This is an item layout:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="175dp"
android:gravity="center"
android:layout_weight="0"
android:id="#+id/article_layout"
android:background="#drawable/gradientdemo">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:gravity="center|bottom"
android:orientation="vertical"
android:paddingLeft="16dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textStyle="bold"
android:text="Titolo dell'articolo"
android:textSize="#dimen/abc_text_size_headline_material"
android:layout_gravity="left"
android:id="#+id/article_title" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:text="3/9/16 - Autore"
android:layout_gravity="left"
android:id="#+id/article_info" />
</LinearLayout>
</LinearLayout>
This is my custom adapter:
public class ArticleAdapter extends ArrayAdapter<Article> {
public ArticleAdapter(Context context, int textViewResourceId){
super(context, textViewResourceId);
}
public ArticleAdapter(Context context, int resource, List<Article> items ){
super(context, resource, items);
}
#Override
public View getView(int position, View convertView, ViewGroup parent){
View v = convertView;
if (v == null) {
LayoutInflater vi;
vi = LayoutInflater.from(getContext());
v = vi.inflate(R.layout.article_item, null);
}
Article article = (Article) getItem(position);
TextView title = (TextView) v.findViewById(R.id.article_title);
TextView info = (TextView) v.findViewById(R.id.article_info);
if( title != null ) {
title.setText( article.getTitle() );
}
if( info != null ) {
info.setText( article.getAuthor() );
}
return v;
}
}
Hope it's readable, I'm kind of new to android development.
Your cell's LineaerLayout:
android:layout_height="0dp"
android:layout_weight="1"
change to:
android:layout_height="wrap_content"
you don't need layout_weight
Delete the android:layout_weight="1" and add a correct height, e.g. android:layout_height="60dp":
<LinearLayout
android:layout_width="match_parent"
android:layout_height="60dp"
android:gravity="center|bottom"
android:orientation="vertical"
android:paddingLeft="16dp">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textStyle="bold"
android:text="Titolo dell'articolo"
android:textSize="#dimen/abc_text_size_headline_material"
android:layout_gravity="left"
android:id="#+id/article_title" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:text="3/9/16 - Autore"
android:layout_gravity="left"
android:id="#+id/article_info" />
</LinearLayout>
in the linearLayout use wrapcontent, erase layout_weigth and add weigthsum=1
Then in textViews change height to 0dp and add to each one layout_weight=0.5
I think this will work
I fixed this by changing this line in the adapter
v = vi.inflate(R.layout.article_item, null);
to this one:
v = vi.inflate(R.layout.article_item, parent, false);
I'm trying to create an adapter for a listview, which contains two elements in a same row.
The LayoutFile got two linear LinearLayouts Layout Image with two images and name
The adapter only fill the first LinearLayout data, and don't show the second LinearLayout.
Someone could help me? Thanks in advance !
XML File:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<ImageView
android:id="#+id/imageViewItem"
android:layout_width="match_parent"
android:layout_height="175dp"
android:src="#drawable/icon" />
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:gravity="left">
<TextView
android:id="#+id/textViewTitleItem"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:text="Title"
android:gravity="center" />
</LinearLayout>
<LinearLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:gravity="right">
<TextView
android:id="#+id/textViewPriceItem"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="right"
android:text="Price"
android:gravity="center" />
</LinearLayout>
</LinearLayout>
</LinearLayout>
It is only a View, I want to duplicate it in the same row.
Below the adapter:
public ItemAdapter(Activity activity, int layoutResourceId)
{
this.activity = activity;
this.layoutResourceId = layoutResourceId;
}
public override View GetView(int position, View convertView, ViewGroup parent)
{
var row = convertView;
var currentItem = this[position];
TextView txtViewTitle;
TextView txtViewPrice;
ImageView imgViewItem;
if (row == null)
{
var inflater = activity.LayoutInflater;
row = inflater.Inflate(layoutResourceId, parent, false);
txtViewTitle = row.FindViewById<TextView>(Resource.Id.textViewTitleItem);
txtViewPrice = row.FindViewById<TextView>(Resource.Id.textViewPriceItem);
imgViewItem = row.FindViewById<ImageView>(Resource.Id.imageViewItem);
} else
txtViewTitle = row.FindViewById<TextView>(Resource.Id.textViewTitleItem);
txtViewPrice = row.FindViewById<TextView>(Resource.Id.textViewPriceItem);
imgViewItem = row.FindViewById<ImageView>(Resource.Id.imageViewItem);
txtViewTitle.Text = currentItem.Title;
txtViewPrice.Text = Convert.ToString(currentItem.Price);
return row;
}
It seems that you didn't provide orientation to your parent LinearLayout. By default it is horizontal.
That's why its showing only top layout content.
You need to set it as vertical to show the entire content in your list.
android:orientation="vertical"
I have custom template with edittext field. When I click on "next" button on softkeyboard it move focus only two time - than button changed to "OK". List have 12 items.
Any way to navigate to all items, not only 2?
Can you help me please?
Im use this template for listview:
<?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="match_parent"
android:orientation="vertical"
android:padding="3dp" >
<TextView
android:id="#+id/head"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceMedium" />
<TextView
android:id="#+id/text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textAppearance="?android:attr/textAppearanceSmall" />
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:baselineAligned="true"
android:paddingBottom="3dp"
android:paddingTop="3dp" >
<EditText
android:id="#+id/value"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:ems="10"
android:gravity="left"
android:inputType="number" >
<requestFocus />
</EditText>
<TextView
android:id="#+id/description"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:textAppearance="?android:attr/textAppearanceSmall"
android:width="100dp" />
</LinearLayout>
</LinearLayout>
And this xml for listview:
<?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="match_parent"
android:orientation="vertical" >
<TextView
android:id="#+id/head"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/calk_1"
android:textAppearance="?android:attr/textAppearanceLarge" />
<ListView
android:id="#+id/listView1"
android:layout_width="match_parent"
android:layout_height="382dp"
android:divider="#color/reddivider"
android:dividerHeight="#dimen/twodp"
android:focusable="true"
android:focusableInTouchMode="true"
android:smoothScrollbar="true" >
</ListView>
</LinearLayout>
Also, here my adapter right now:
public View getView(int position, View convertView, ViewGroup parent){
// assign the view we are converting to a local variable
View v = convertView;
// first check to see if the view is null. if so, we have to inflate it.
// to inflate it basically means to render, or show, the view.
if (v == null) {
LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = inflater.inflate(R.layout.list_view, null);
}
/*
* Recall that the variable position is sent in as an argument to this method.
* The variable simply refers to the position of the current object in the list. (The ArrayAdapter
* iterates through the list we sent it)
*
* Therefore, i refers to the current Item object.
*/
CalcItem i = objects.get(position);
int last=getCount()-1;
if (i != null) {
// This is how you obtain a reference to the TextViews.
// These TextViews are created in the XML files we defined.
TextView hd = (TextView) v.findViewById(R.id.head);
TextView tx = (TextView) v.findViewById(R.id.text);
TextView ds = (TextView) v.findViewById(R.id.description);
EditText vl = (EditText) v.findViewById(R.id.value);
if (position==0){
vl.setNextFocusUpId(last);
vl.setNextFocusDownId(1);
} else if (position==last){
vl.setNextFocusDownId(0);
} else {
vl.setNextFocusDownId(position+1);
}
if (hd != null){
hd.setText(i.getHead());
}
if (tx != null){
tx.setText(i.getText());
}
if (ds != null){
ds.setText(i.getDescription());
}
if (vl != null){
vl.setText(Integer.toString(i.getValue()));
}
}
// the view must be returned to our activity
return v;
}
Use android:nextFocusUp="id" and android:nextFocusDown="id" - as described in the documentation.
Here's an example from the docs:
<LinearLayout
android:orientation="vertical"
... >
<Button android:id="#+id/top"
android:nextFocusUp="#+id/bottom"
... />
<Button android:id="#+id/bottom"
android:nextFocusDown="#+id/top"
... />
</LinearLayout>
As far as I know, Edit texts doesnt work well in ListViews and Recycler views,
I'll Recommend you to inflate separate views multiple times instead of making a ListView if you are dealing with edit texts.
thank you for your time.
I have a list of Strings that a display inside a gridview using an ArrayAdapter. Some of those Strings are long and take too much room. I want to limit the height of each grid cell to 1 line and be able to read the full string when i'm clicking on this cell.
Here's my gridview.xml :
<GridView
android:id="#+id/songSelectionGrid_grid"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_above="#id/songSelectionGrid_button_back"
android:columnWidth="90sp"
android:horizontalSpacing="10dp"
android:numColumns="3"
android:verticalSpacing="10dp" />
and here is my textview inside my gridview :
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="center_vertical"
android:minHeight="?android:attr/listPreferredItemHeightSmall"
android:paddingEnd="?android:attr/listPreferredItemPaddingEnd"
android:paddingStart="?android:attr/listPreferredItemPaddingStart"
android:scrollHorizontally="true"
android:singleLine="true"
android:textAppearance="?android:attr/textAppearanceListItemSmall"
android:maxLines = "1"
android:scrollbars = "horizontal"/>
How can i make the Strings scroll horizontally ?
I've tried a onItemClickListener on the gridview followed by a "setMovementMethod" on the view, but it need to be a TextView and casting it doesn't seem to work
Thanks !
Ok so I've managed to make it work as intended : gridview displaying multiple albums (cover picture + horizontally scrollable text). To do so, I've created my own GridAdapter with the following getView() :
public View getView(int position, View convertView, ViewGroup parent)
{
// TODO Auto-generated method stub
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View gridView = null;
convertView = null;
if(convertView == null)
{
gridView = new View(context);
gridView = inflater.inflate(R.layout.gridtextview, null);
TextView textView = (TextView) gridView.findViewById(R.id.gridView_text);
textView.setText(textArray[position]);
Log.i("GridAdapter","textView.getText :
}
return gridView;
}
The gridView I am populating is composed of the following :
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/gridView_topLayout"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical" >
<ImageView
android:id="#+id/gridView_image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:contentDescription="#string/gridTextView_Album"
android:src="#drawable/ic_launcher" />
<HorizontalScrollView
android:id="#+id/gridView_horizontalScroll"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="left"
android:clipChildren="true"
android:fillViewport="true"
android:scrollbars="none" >
<RelativeLayout
android:id="#+id/gridView_layout"
android:layout_width="wrap_content"
android:layout_height="wrap_content" >
<TextView
android:id="#+id/gridView_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:isScrollContainer="true"
android:paddingBottom="10sp"
android:singleLine="true" />
</RelativeLayout>
</HorizontalScrollView>
I am not sure this is the best way of doing it but it does work.
But still, keep in mind I'm still a beginner in android dev :)
First off, I apologize because I know variations of this question have been asked several times but I cannot seem to find anything that matches mine.
Within my code, for some reason, the call
TextView tt = (TextView) v.findViewById(R.id.top_text);
returns null. I know the R.id.top_text returns a proper value looking at the debugger. As well, v is a view created from the inflater. I would think that if the xml file for the individual row is defined and the specific item within it is returning a reasonable value, the findView call shouldn't return null.
Below is the full code for the Custom adapter and the two xml files.
Any help is very much appreciated.
Thanks
public class ContactAdapter extends ArrayAdapter<ResultSet>{
Context _context;
int _layoutResourceId;
ArrayList<ResultSet> _results;
public ContactAdapter(Context context, int layoutResourceId,ArrayList<ResultSet> results) {
super(context, layoutResourceId,results);
_context = context;
_layoutResourceId = layoutResourceId;
_results = results;
}
#Override
public View getView(int position, View convertView,ViewGroup parent){
View v = convertView;
if (v == null) {
LayoutInflater vi = (LayoutInflater)getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = vi.inflate(R.layout.list_row, null);
}
ResultSet row = _results.get(position);
if (row != null) {
TextView tt = (TextView) v.findViewById(R.id.top_text);
if (tt != null) {
tt.setText("Name: "+row.getName()); }
}
return v;
}
<?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="match_parent"
android:orientation="vertical" >
<TextView
android:id="#+id/list_text"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="VOKAL CONTACTS"
android:textAppearance="?android:attr/textAppearanceLarge" />
<ListView
android:id="#+id/listView1"
android:layout_width="match_parent"
android:layout_height="385dp" >
</ListView>
</LinearLayout>
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="10dp">
<ImageView
android:id="#+id/img_icon"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_alignParentBottom="true"
android:layout_alignParentTop="true"
android:layout_marginBottom="5dp"
android:layout_marginRight="15dp"
android:layout_marginTop="5dp"
android:gravity="center_vertical" />
<TextView
android:id="#+id/top_text"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentBottom="true"
android:layout_alignParentTop="true"
android:layout_marginBottom="5dp"
android:layout_marginTop="5dp"
android:gravity="center_vertical"
android:textColor="#000000"
android:textSize="22dp"
android:textStyle="bold" />
</RelativeLayout>