Develop Reference

how to remove a list item of ListView from onitemclick listener

i know how to remove a list item by using list adapter.But i want to remove a list item from a actvity which showing the list view.i am using onitemClick Listener for getting data from list item.after getting data i need to remove that item from a list view.how to do that?

You can try to this code..
ListView lv = (ListView) findViewById(R.id.lv);
TestAdapter adpter = new TestAdapter(Test.this, arralist);
lv.setAdapter(adapter);
lv.setOnItemClickListener(new AdapterView.OnItemClickListener()
{
#Override
public void onItemClick (AdapterView < ? > adapterView, View view,int position, long l){
arralist.remove(position);
adapter.notifyDataSetChanged();
}
}
);

While not best practice you can also call the change on the adapter.
view.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
adapter.remove(adapter.getItem(position));
}
});

Android: Storing selected ListView item in global variable

I have two activities.
The first activity contains a ListView widget that is populated such:
String products[] = {"Pull Restaurant names here", "Res. 1", "Res abc", "Res foo", "Res hello",
"Res xyz", "Res test", "Res test2", "Denny's"};
lv = (ListView) findViewById(R.id.listView);
// Adding items to listview
adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, products);
lv.setAdapter(adapter);
Once the user selects an item from the list, I load a new activity such:
lv.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
android.content.Intent intent = new android.content.Intent(GuestPage.this, RestaurantProfile.class);
startActivity(intent);
}
});
I want to be able to store the selected item string from the ListView into a global variable. I have a Global class that extends application, I have included the necessary name tag in my manifest. I am using something similar to:
Globals g = (Globals)getApplication();
g.setData(String s);
in order to set the Global variable.
My issue is with storing the selected ListView item because I don't know how to call it. I am not using any xml Item files to populate my ListView. How do I know which item is selected and how do I store that into my global variable?
FOR EXAMPLE: user selects "Res foo". New activity is loaded and I have a global variable to use among all activities that contains String "Res foo".
Thanks.

What you're doing with your Globals is a very bad practice. Instead take a look a this solution for passing data between Activities.
https://stackoverflow.com/a/7325248/3474528
To get the selected string you would want to do something like:
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
String selected = products[position];
....
}

public void onItemClick(AdapterView<?> parent, View view, int position, long id)
int position holds the index of the item clicked in the ListView.
You can then use that position to get the text:
String theText = (ListView)parent.getItemAtPosition(position);

lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> myAdapter, View myView, int myItemInt, long mylng) {
String selectedFromList = (String) (lv.getItemAtPosition(myItemInt));
android.content.Intent intent = new android.content.Intent(GuestPage.this, RestaurantProfile.class);
startActivity(intent);
}
});
I hope this fix your problem :)

ListView onClick update clears the list

I have the following code that's supposed to remove the item that is clicked on:
listView.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
String itemValue = (String) listView.getItemAtPosition(position);
email_addresses.remove(position);
String size = Integer.toString(email_addresses.size());
Log.d("Size: ", size);
//listView = (ListView) findViewById(R.id.email_list);
//ArrayAdapter<String> adapter = new ArrayAdapter<>(getApplicationContext(), android.R.layout.simple_list_item_1, android.R.id.text1, email_addresses);
//listView.setAdapter(adapter);
ArrayAdapter<String> adapter = new ArrayAdapter<>(mainAppContext, android.R.layout.simple_list_item_1, android.R.id.text1, email_addresses);
((ListView)parent).setAdapter(adapter);
parent.refreshDrawableState();
}
When I click on an item the list is cleared and nothing is displayed. The size is the correct value and the list can be rebuilt but I am unable to get this code to work.
Thank you

Instead of creating a whole new Adapter each time, have you thought about simply making your Adapter a member variable and calling notifyDataSetChanged?
ArrayAdapter<String> adapter = new ArrayAdapter<>(mainAppContext, android.R.layout.simple_list_item_1, android.R.id.text1, email_addresses);
((ListView)parent).setAdapter(adapter);
Becomes:
mAdapter.notifyDataSetChanged();

Define your list and adapter as instant variables and also You have to notify the adapter in order to make the deletion affect ,
Try this ,
listview.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
email_addresses.remove(position);
adapter .notifyDataSetChanged();
}
});

Implementing OnClickListener to list items of a list

I used list view to list the items of my SQLite database as follows:
listView = (ListView) findViewById(R.id.listView1);
db.open();
Cursor c = db.getAllHistory();
ArrayList<String> temparr = new ArrayList<String>();
if (c.moveToFirst()) {
do {
temparr.add(c.getString(0)+'\t'+c.getString(1)+'\t'+c.getString(2)+'\t'+c.getString(3)+'\t'+c.getString(4)+'\t');
} while(c.moveToNext());
ArrayAdapter<String> adapter = new ArrayAdapter<String>(this,android.R.layout.simple_list_item_1, temparr);
listView.setAdapter(adapter);
} else {
db.close();
}
Now I want to access the specific list item by using OnItemClickListener. How should i do it?

To get your perticular data-
Implement setOnItemClickListener()-
and position will return list's item position number:-
listView.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,int position, long id) {
String yourData = temparr.get(position);
}
});

Just call listView.setOnItemClickListener() with your implementation of the listener.

listView.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view,int position, long id) {
// your code
// Toast.makeText(context,temparr.get(position),Toast.LENGTH_SHORT).show();
}
});
parent -> The AdapterView where the click happened.
view -> The view within the AdapterView that was clicked (this will be a view provided by the adapter)
position -> The position of the view in the adapter.
id->The row id of the item that was clicked.

You can set the listener like this:
Put this code in onCreate()
TextView disp = (TextView) findViewById(R.id.textView1);
listView.setOnItemClickListener(new OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
String temp = (String) listView.getItemAtPosition(position);
disp.setText(temp);// display on screen
}
});
EDIT:
As you want to display the listItem on screen in a permenant sort of way rather than displaying a toast, the easiest way that you can do this is by adding a TextView in your layout. See the updated code
Hope this helps.

get value from listview and save it in another listview in another activity

This is my first time using eclipse for android, I want to know how can I get a value from listview and send it to another activity; something like session in c#
I want to make it so when I choose one of item in listview, and send it to another activity
listview1.setOnItemClickListener(new android.widget.AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,int position, long id) {
/*some code to save data in MainActivity*/
Intent in = new Intent(MainActivity.this,Order.class);
startActivity(in);
}});
and show it in another listview in another activity;
array_list=new String[7];
/*array_list[0]= *something to get data from MainActivity* */
ListView lv = (ListView) findViewById(R.id.listViewMakanan);
ArrayAdapter adapter = new ArrayAdapter(this,android.R.layout.simple_list_item_1,array_list);
lv.setAdapter(adapter);
EDIT:
this is my array string in MainActivity:
private String array_list[];
array_list=new String[7];
array_list[0]="Nasi Gr Seafood";
array_list[1]="Nasi Gr Magelangan";
array_list[2]="Cap Cay Goreng";
array_list[3]="Cap Cay Kuah";
array_list[4]="Sapi Cabe Hijau";
array_list[5]="Iga Lada Hitam";
array_list[6]="Sapo Tahu Ayam";
and I use this to put my array in ListView:
ListView lv = (ListView) findViewById(R.id.listview1);
ArrayAdapter adapter = new ArrayAdapter(this,android.R.layout.simple_list_item_1, array_list);
lv.setAdapter(adapter);

Make it like this.
listview1.setOnItemClickListener(new android.widget.AdapterView.OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,int position, long id) {
Toast.makeText(getApplicationContext(), array_list[position], Toast.LENGTH_LONG).show();
/*some code to save data in MainActivity*/
Intent in = new Intent(MainActivity.this,Order.class);
in.putExtra("ListValue", array_list[position]);
startActivity(in);
}});
In your Order.class
//to get the value from the MainActivity.this.
String value= getIntent().getExtras().getString("ListValue");
Hope this will help you.

You can use Intent to pass the data between Activities.
Second Solution:
You can use public static Arraylist<String> MyArraylist in your MainActivity & you can access it in another Activity as MainActivity.MyArraylist.