Develop Reference

Two clickable item in same row of listview

How can I place 2 items in the same row in listview?
e.g
item 1 | item 2
item 3 | item 4
item 5 | item 6
and so on.
I don't have a problem with drawing them and there are a lot of various ways to draw them.
My problem: I cannot find a propper way to listen when I clicked on item 1 or item 2.
Also, I am considering to simply make 2 listview, populate them independently and rotate simultaneously, but I hope there is better way.

You should use a custom adapter for your listView. In the adapter you inflate your own layout for each row and listen for events for each view. This is an example of a custom Adapter: Custom Adapter for List View
Hope it helps you!!

for each item add this to listview row layout:
android:focusable="false"
and then in getView find each item and then assign it the appropriate click listener.

Use CustomAdapter for listview and add items in collection for example an ArrayList.
CustomAdapter adapter=new CustomAdapter(getApplicationContext(),R.id.listview_id,itemlist);
list_item.xml
<?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="fill_parent"
android:orientation="horizontal"
>
<TextView android:id="#+id/item1"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="10dip"
android:textSize="16sp"
android:textStyle="bold"
android:textColor="#000000"
/>
<TextView android:id="#+id/item2"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:padding="10dip"
android:textSize="16sp"
android:textStyle="bold"
android:textColor="#000000"
/>
</LinearLayout>
CustomAdapter.java
public class CustomAdapter extends CustomAdapter<String>{
//Declare variables variables here..
public CustomAdapter(Context context, int resource,
List<String> objects) {
//initialize and set constructor values here..
}
public static class ViewHolder {
TextView textitem1;
TextView textitem2
}
#Override
public View getView(int position, View convertView, ViewGroup parent) {
// TODO Auto-generated method stub
View row = convertView;
ViewHolder holder = null;
if(null == row) {
LayoutInflater inflater = (LayoutInflater)getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
row = inflater.inflate(R.layout.list_item, parent, false);
holder = new ViewHolder();
holder.textitem1 = (TextView) row.findViewById(R.id.item1);
holder.textitem2 = (TextView) row.findViewById(R.id.item2);
row.setTag(holder);
}
return view;
}
}

You can add as many TextViews you want. Depending on requirement, you can alter their position/height/width etc.
For listening Click event,
For each text view add android:clickable="true"
Use a CustomAdapter and set ClickListeners for each TextView in getView method.
Hope This Helps!

And i found way wich is suitable for me for 100%
Idea is to use GridView~ instead ofListView`.
<GridView
android:id="#+id/gridview"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:numColumns="2"
android:stretchMode="columnWidth" />
In fact I dont even need to change and single line in my original adapter. android:numColums set how much colums you want to display. You can place int there or auoto_fit.

Why does ListView stays above TextView in ListPreference dialog?

I need to create a custom ListPreference dialog so that I can add some header text (a TextView) above the List (ListView).
I've created MyListPreference class that extends ListPreference and overrides onCreateDialogView():
#Override
protected View onCreateDialogView() {
LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = (View) inflater.inflate(R.layout.dialog_preference_list, null);
return v;
}
My XML layout dialog_preference_list.xml contains:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:id="#+id/textView1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView" />
<ListView
android:id="#android:id/list"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:drawSelectorOnTop="false"
android:scrollbarAlwaysDrawVerticalTrack="true" />
</LinearLayout>
Problem: The TextView is displayed below the ListView instead of above. I need the TextView to be above. I've tried both with LinearLayout and RelativeLayout (using "below" or "above" attributes) with no success: I can't find a way to put the TextView above the ListView... The layout is pretty simple and I cannot see why the list stays above...
Also, note that the problem occurs on both a real device (Nexus 4, Android 4.2.2) and the emulator. However, when looking at the layout rendered in Eclipse's graphical layout, the layout is correct! See both attached pictures.
Any idea on how to solve this?
Layout rendered on the device (incorrect):
Layout rendered on Eclipse (correct):
Edit with solution 10.07.2013
As suggested by the accepted answer, the problem comes from the use of builder.setSingleChoiceItems() in ListPreference's onPrepareDialogBuilder().
I've fixed it by extending ListPreference and overriding onCreateDialogView() to build the Dialog without the builder so that I can create a custom View showing the header text above the list items.
GPListPreference.java:
public class GPListPreference extends ListPreference {
...
#Override
protected void onPrepareDialogBuilder(AlertDialog.Builder builder) {
builder.setNegativeButton(null, null);
builder.setPositiveButton(null, null);
}
private int getValueIndex() {
return findIndexOfValue(getValue());
}
#Override
protected View onCreateDialogView() {
LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
ListView lv = (ListView) inflater.inflate(R.layout.dialog_preference_list, null);
TextView header = (TextView) inflater.inflate(R.layout.dialog_preference_list_header, null);
header.setText(getDialogMessage()); // you should set the header text as android:dialogMessage in the preference XML
lv.addHeaderView(header);
ArrayAdapter<CharSequence> adapter = new ArrayAdapter<CharSequence>(getContext(), R.layout.dialog_preference_list_singlechoice, getEntries());
lv.setAdapter(adapter);
lv.setClickable(true);
lv.setEnabled(true);
lv.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
lv.setItemChecked(getValueIndex() + 1, true);
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
setValueIndex(position - 1);
getDialog().dismiss();
}
});
return lv;
}
}
dialog_preference_list.xml:
<?xml version="1.0" encoding="utf-8"?>
<ListView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/list"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:drawSelectorOnTop="false"
android:scrollbarAlwaysDrawVerticalTrack="true" />
dialog_preference_list_singlechoice.xml
<?xml version="1.0" encoding="utf-8"?>
<CheckedTextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/text1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:checkMark="?android:attr/listChoiceIndicatorSingle"
android:ellipsize="marquee"
android:gravity="center_vertical"
android:minHeight="?android:attr/listPreferredItemHeight"
android:paddingBottom="2dip"
android:paddingLeft="10dip"
android:paddingRight="10dip"
android:paddingTop="2dip"
android:textAppearance="?android:attr/textAppearanceMedium" />
dialog_preference_list_header.xml
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="10dip"
android:textAppearance="?android:attr/textAppearanceSmall">
</TextView>

I think the problem is with the way ListPreference works. ListPreference uses Builder.setSingleChoiceItems() to create the rows with the RadioButtons, and it has preference over the custom layout you are trying to add (in your case a TextView and a ListView inside a LinearLayout. The solution is extending DialogPreference instead. Here is a link to a GitHub where I created a custom DialogPreference that does what you need. I haven't coded the RadioButton logic.

I guess it's a theming issue. Try changing the theme of your dialog inside the constructor make it something like setStyle(STYLE_NO_TITLE, R.style.AppTheme). Your base app theme with no_title style.
If this is not the issue than it might be related with the ListPreference class itself. It might be overriding your layout for consistency in theming the preference views. However, I have not used ListPreference before, so its just a guess.
Can you reproduce the same result by playing with the themes in XML graphical layout preview?

Another option you can try is to add the TextView as a header to the ListView like this:
TextView textView = new TextView(getActivity());
ListView listView = new ListView(getActivity());
listView.addHeaderView(textView);
The addHeaderView takes a View so you theoretically have anything you want to be the header, but I have only used a TextView.

The link above is broken. On this solution the idea is overriding the ListPreference, and inflating your own listview, with the data defined on the ListPreference.
#Override
protected View onCreateDialogView() {
LayoutInflater inflater = (LayoutInflater) getContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
ListView lv = new ListView(getContext());
// Inflate the view into the header only if a message was set
if (getDialogMessage() != null && ! getDialogMessage().equals("") ) {
TextView header = (TextView) inflater.inflate(R.layout.dialog_preference_list_header, null);
header.setText(getDialogMessage());
lv.addHeaderView(header, null, false);
}
// Create a new adapter and a list view and feed it with the ListPreference entries
ArrayAdapter<CharSequence> adapter = new ArrayAdapter<CharSequence>(getContext(),
R.layout.custom_dialog_single_choice_list_adapter, getEntries());
lv.setAdapter(adapter);
lv.setClickable(true);
lv.setEnabled(true);
lv.setChoiceMode(ListView.CHOICE_MODE_SINGLE);
lv.setItemChecked(getValueIndex() + 1, true);
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
setValueIndex(position - 1);
getDialog().dismiss();
}
});
return lv;
}
Another important thing is to call onPrepareDialogBuilder and not calling super in it. This will avoid that the listview appears twice.
#Override
protected void onPrepareDialogBuilder(AlertDialog.Builder builder) {
// Not calling super, to avoid having 2 listviews
// Set the positive button as null
builder.setPositiveButton(null, null);
}
private int getValueIndex() {
return findIndexOfValue(getValue());
}
Where dialog_preference_list_header is in my case only a TestView, but it could be a more complex view, and custom_dialog_single_choice_list_adapter could be something like this:
<?xml version="1.0" encoding="utf-8"?>
<CheckedTextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#android:id/text1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:checkMark="?android:attr/listChoiceIndicatorSingle"
android:ellipsize="marquee"
android:gravity="center_vertical"
android:minHeight="?android:attr/listPreferredItemHeight"
android:paddingBottom="2dip"
android:paddingLeft="10dip"
android:paddingRight="10dip"
android:paddingTop="2dip"
android:textAppearance="?android:attr/textAppearanceMedium" />

Delete button on ListView items (like for iPhone)

I have a ListView (with an Adapter of my own) where I'd like to add a delete button by swaping an item on the ListView (like on iPhones).
I really don't know how to do it and where to start ...
Could you please give me some hints ?
Thanks

What you want to implement is a custom ListView. You need a layout for your row, here's an example
res/layout/row.xml
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="horizontal"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="#android:color/transparent">
<TextView android:id="#+id/Browse_DateTime"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#android:color/transparent" />
<ImageButton android:id="#+id/delete"
android:layout_width="wrap_content"
android:layout_height="fill_parent" />
</LinearLayout>
Then you need to overide the getView() method of your adapter, a little like this:
setListAdapter(new ArrayAdapter<Object>(this, R.layout.row, R.id.Browse_DateTime, ourRows) {
#Override
public View getView(int position, View convertView, ViewGroup parent) {
View v = convertView;
if (v == null) {
LayoutInflater vi = (LayoutInflater)BrowseActivity.this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
v = vi.inflate(R.layout.row, null);
}
TextView time = (TextView) v.findViewById (R.id.Browse_DateTime);
time.setText(ourRows[position].dateTime);
ImageButton delete = (ImageButton) v.findViewById(R.id.delete);
delete.setFocusable(false);
delete.setImageDrawable(BrowseActivity.this.getResources().getDrawable(R.drawable.deletebutton));
delete.setOnClickListener(BrowseActivity.this);
delete.setId(position);
return v;
}
};)
Best regards.
PS: this is cut&paste from my code, BrowseActivity is just the name of the activity this code resides in, R.layout.row is my row.xml file, you name it any which way, just put it in /res/layout/, and if your delete button is an imagebutton, you DO need the delete.setFocusable(false); (try it without and see why).

Problem to set images in list view android application

I am a new android developer . I have create a quiz application where i need to display the questions in list view serially . my all question and options are images. how can i set the images in list view. i want to set only the image in list view not any text . Please help me.

Create a listview in your main xml file like this:
<?xml version="1.0" encoding="UTF-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/masterLayout"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<ListView
android:id="#+id/list"
android:cacheColorHint="#00000000"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</LinearLayout>
Then create another xml file called child_layout:
<?xml version="1.0" encoding="UTF-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<ImageView android:id="#+id/image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</RelativeLayout>
Then in your activity class initialize your listview:
ListView listView1 = (ListView)findViewById(R.id.list);
Create a class that extends baseadapter and modify all the necessary methods the way you need to (create the constructor that takes a list of drawables as an argument and create a global variable that is set to the provided list). Then do the following in your activity class:
ArrayList<Drawable> images = new ArrayList<Drawable>();
// add to the list here
CustomListAdapter adapter = new CustomListAdapter(images);
listView1.setAdapter(adapter);
Do this in your getView() function in your customlistadapter class:
public View getView(int position, View convertView, ViewGroup parent)
{
Drawable image = images.get(position);
if (convertView == null)
{
LayoutInflater infalInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
convertView = infalInflater.inflate(R.layout.child_layout, null);
}
ImageView imageView = (ImageView)convertView.findViewById(R.id.image);
imageView.setBackgroundDrawable(image);
return convertView;
}
ListView item click listener:
listView1.setOnItemClickListener(new ListView.OnItemClickListener()
{
public void onItemClick(AdapterView<?> listView, View itemView, int position, long itemId)
{
String message = "example text: " + position;
Toast.makeText(MyActivity.this, message, Toast.LENGTH_SHORT).show();
}
});

You need to create a Custom ListAdapter. An Example is give in API samples. Just add an ImageView as the layout of the custom adapter and you should get going. Search more for the examples.

take one main layout xml file in which you have to give the .
something like this
<List
android:width="wrap_content"
android:height="wrap_content"
android:id="#+id/list"
/>
and take another layout xml file with
<ImageView
android:width="wrap_content"
android:height="wrap_content"/>
In the adapter inflate this xml file that contains ImageView. so that you can get image in the list

look at this tutorial... and replace textview with image view and set images to it.
also have a look at this question...
Hope this helps.
Thanks.

Android - Dynamically Add Views into View

I have a layout for a view -
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="0px"
android:orientation="vertical">
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="#+id/items_header"
style="#style/Home.ListHeader" />
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="#+id/items_none"
android:visibility="gone"
style="#style/TextBlock"
android:paddingLeft="6px" />
<ListView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:id="#+id/items_list" />
</LinearLayout>
What I want to do, is in my main activity with a layout like this
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:padding="0px"
android:id="#+id/item_wrapper">
</LinearLayout>
I want to loop through my data model and inject multiple views consisting of the first layout into the main layout. I know I can do this by building the controls completely within the code, but I was wondering if there was a way to dynamically build the views so that I can continue using a layout instead of putting everything in code.

Use the LayoutInflater to create a view based on your layout template, and then inject it into the view where you need it.
LayoutInflater vi = (LayoutInflater) getApplicationContext().getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = vi.inflate(R.layout.your_layout, null);
// fill in any details dynamically here
TextView textView = (TextView) v.findViewById(R.id.a_text_view);
textView.setText("your text");
// insert into main view
ViewGroup insertPoint = (ViewGroup) findViewById(R.id.insert_point);
insertPoint.addView(v, 0, new ViewGroup.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT));
You may have to adjust the index where you want to insert the view.
Additionally, set the LayoutParams according to how you would like it to fit in the parent view. e.g. with FILL_PARENT, or MATCH_PARENT, etc.

See the LayoutInflater class.
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
ViewGroup parent = (ViewGroup)findViewById(R.id.where_you_want_to_insert);
inflater.inflate(R.layout.the_child_view, parent);

It looks like what you really want a ListView with a custom adapter to inflate the specified layout. Using an ArrayAdapter and the method notifyDataSetChanged() you have full control of the Views generation and rendering.
Take a look at these tutorials
http://www.softwarepassion.com/android-series-custom-listview-items-and-adapters/
http://developerlife.com/tutorials/?p=327
http://www.androidguys.com/2008/07/14/fancy-listviews-part-one/

To make #Mark Fisher's answer more clear, the inserted view being inflated should be a xml file under layout folder but without a layout (ViewGroup) like LinearLayout etc. inside. My example:
res/layout/my_view.xml
<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:id="#+id/i_am_id"
android:text="my name"
android:textSize="17sp"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_weight="1"/>
Then, the insertion point should be a layout like LinearLayout:
res/layout/activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/aaa"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:id="#+id/insert_point"
android:layout_width="match_parent"
android:layout_height="match_parent">
</LinearLayout>
</RelativeLayout>
Then the code should be
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_shopping_cart);
LayoutInflater inflater = getLayoutInflater();
View view = inflater.inflate(R.layout.my_view, null);
ViewGroup main = (ViewGroup) findViewById(R.id.insert_point);
main.addView(view, 0);
}
The reason I post this very similar answer is that when I tried to implement Mark's solution, I got stuck on what xml file should I use for insert_point and the child view. I used layout in the child view firstly and it was totally not working, which took me several hours to figure out. So hope my exploration can save others' time.

// Parent layout
LinearLayout parentLayout = (LinearLayout)findViewById(R.id.layout);
// Layout inflater
LayoutInflater layoutInflater = getLayoutInflater();
View view;
for (int i = 1; i < 101; i++){
// Add the text layout to the parent layout
view = layoutInflater.inflate(R.layout.text_layout, parentLayout, false);
// In order to get the view we have to use the new view with text_layout in it
TextView textView = (TextView)view.findViewById(R.id.text);
textView.setText("Row " + i);
// Add the text view to the parent layout
parentLayout.addView(textView);
}