Load data in a ListView - android

I have a question, if I want to load a ListView directly from a database, for example on the first screen I'll have a search button that will search the database and display the results in another screen in a ListView. How would I do that?

CursorAdapter or SimpleCursorAdapter will help you.

Your question has a few parts, if you don't already know how to start.
1) First you will need to learn how to set up a custom ListView and a generic adapter
http://www.vogella.com/articles/AndroidListView/article.html
2) Then you need to figure out how to source your adapter with data pulled from your database
http://androidtuts4u.blogspot.com/2013/02/android-list-view-using-custom-adapter.html

Related

Endless Adapter with custom listview adapter in android

I am using this link to create custom listview in my app.
First I want to display listview with 5 items. As I scroll the list it should parse data and load listview for next 5 items.
Listview row contains 5 textviews.
How can I achieve this?
Please help me.
Thanks in advance
I want to display 5 items in single row
That has nothing to do with EndlessAdapter. That has everything to do with the ListAdapter you are putting into the EndlessAdapter. Start by not using EndlessAdapter and getting your list looking the way you want. Then, and only then, add in EndlessAdapter to add more data to the list as the user scrolls.
There are countless examples online of how to create rows in a custom ListAdapter that have more than one thing in them. Here is a free excerpt from my book on how to subclass ArrayAdapter, override getView(), and handle more than one widget in a row. You specifically will want to look at the "Customizing the Adapter" section.

How to load huge data in tablelayout

I am new to android and I am trying to load huge data which contains images and text and are fetch from server,in tablelayout.Can someone suggest me how I should do that.Because Loading all row at once may cause application to crash.Please help.Thanks in advance.
Bestet is the ListView with custom adapter.
You can read more about ListView and ListViewActivity and custom adapter for listview
What you can do , is to use a ListView or GridView with custom adapter . for more information read this article it will help you , now when you face other issue create these stuff post a new question

Android Custom Contacts ListView with Icon

I'm trying to implement the above mentioned. From this link, http://www.pocketmagic.net/?p=1870 , it pretty much shows what I'm trying to achieve, except I want to show an icon on the left side of the contact based on a condition. i.e. If Aaron is in Company A show Company A icon, if Betty is in Company B show Company B icon. Problem is the contacts data is from 1 cursor and the company data is from another cursor.
I'm looking at a custom cursor adapter, is there a way to create a single cursor with data from 2 cursors and set it into the list adapter? How this makes sense. Thanks!
This can only be done if you extend the cursor adapter and then INTERCEPT the data when its building the views and build it how you want it with the cursor data that will be coming in. Once you have this setup its pretty easy. And there is a cursor that can take two cursors and put them together.. but I can't remember if this was custom or not.
Simple way is to just take the data and throw it into a datastructure and then handle it from there. Also there is no rule saying you can't pass in two cursor into your cursor adapter. MAKE IT YOURS! :)
I just answered a similar question to this that was to use an ArrayAdapter of an Object list. Take a look at the code I posted and instead of extending ArrayAdapter, extend CursorAdapter (If you need to use a Cursor). Or you can build up a Custom Object and use the ArrayAdapter approach
How to put query of information into a listview?
Also, here's the reference for a CursorAdapter:
http://developer.android.com/reference/android/widget/CursorAdapter.html
Hope this helps!

Android tabluar data from database

I want to show all the data from the database in a View. addview to the layout is a good idea. But as I don't know the no. of data, I cann't create required no. of textview, and i cann't add a single textview multiple number of time. How can I solve this problem?
But as I don't know the no. of data, I cann't create required no. of textview, and i cann't add a single textview multiple number of time.
You don't need to create TextView multiple times, it would lead to more complex application.
Rather I would suggest you shold create a simple or custom ListView using simple or custom ArrayAdapter or BaseAdapter or CursorAdapteraccordingly your needs.
Refer this: Getting Stored Data from my Database into ListView
Just read this article to learn how to get info from the database using CRUD methodology:
http://knightswhocode.com/wordpress/?p=14
Create a list of items taken from the database. Then create a ListView with adapter using this list.

Displaying ArrayList in ListView

I know my question isn't formulated well.
I'm adding items to an ArrayList downloaded from JSON file and the ArrayList is passed to a ListView.
So what is my problem?
After displaying the data from the ArrayList i wan't to add new items to it so they can be show right after they are added. I managed to do this by setting the Adapter for the ListView again after the data is added.
Displaying the new items should look smooth but instead it looks very sluggish and i know it's not the right way to do this.
I've searched about this problem but couldn't manage to find anything, so for anyone answering
Thanks in advance.
Its very easy
You need not to set the data adapter again to the listview..
instead
call after you downloaded the new data
listView.getAdapter().notifyDataSetChanged();
this function will tell the view to be build again.
In addition Check the following link. here i mentioned a complete code to use listview properly.
Using this we can achieve any listview behavior. We can embed animation also.
Change ListView background - strange behaviour
Hope this help :)

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