Android : ViewHolder Pattern And Different Types Of Rows?

Jan 17, 2010

ViewHolder pattern improves ListView scrolling framerate, as seen in following example:
http://developer.android.com/intl/de/resources/samples/ApiDemos/src/com/example/android/apis/view/List14.html

Is it possible to keep this pattern while using different kind of Views for different rows?

In other words, is it possible to do something like:

public View getView(int position, View view, ViewGroup parent) {
// calculate viewID here
if (view == null || *view is not null but was created from different XML than viewID* ) {
view = mInflater.inflate(viewId, null);

Android : ViewHolder pattern and different types of rows?


Android :: Make ArrayAdapter Follow ViewHolder Pattern?

Sep 30, 2010

Here is my ArrayAdapter. I would like to make this more efficient by following the ViewHolder pattern:

http://developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/view/List14.html

but am not sure how to accomplish this. code...

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Getting Error While Using ViewHolder In Sqlite Based Application?

Jul 10, 2013

i tried to design a simple a sqlite related apps .but when i try to inflate my data in listview using view holder.it's getting error.i cannt understand how to debug it.my code is---

1- code for SQLiteOpenHelper

Code:
public class DataHelper extends SQLiteOpenHelper {
public static String DATABASE="kuldb";
public static String DB_TABLE="friends";[code].....

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Android :: Enabling Pattern Lock Without Set Pattern

May 1, 2010

What happens if I enabled the pattern lock by updating the setting LOCK_PATTERN_ENABLED, but have never set a pattern? I would check, but I don't want to reset my phone (I don't see a way to clear the lock pattern). Does anyone know?

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Sprint HTC Hero :: Pattern Lock Security - Must Enter Pattern B4 Pickup Call?

Dec 11, 2009

The subject is pretty much it. With pattern lock security enabled, what happens during an incoming call? Must you enter the pattern to pick up the call, or can you simply press "Send"?

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HTC Desire HD :: Lock Pattern - Swipe In Certain Pattern

Nov 29, 2010

Is there a lock pattern on the DHD, the one where you swipe it in a certain pattern like I saw on the original desire?

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Android :: WCF With Complex Types

May 10, 2010

I made the connection between my service WCF and my app android. But i'm wondering if u have ideas about using complex types (classes created on the server side). should i implement the serialization process? or should i juts create the classes on my client side(android)

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Android : How Can We Differentiate Two Types Of Launches

Nov 24, 2010

We can launch the app in two ways, 1 is form the app, clicking on device back button till we reach the android home screen and launching the app or 2nd is from the app we can click the device home button and then we can launch.

How can we differentiate these to launches? In 2nd type launch onrestart will be called, onrestart will be called in some other cases also. I want to do something in the 2nd type of launch. Can any one tel me how to do this...

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Android : Lawyer Types To Get Site Down?

Apr 8, 2010

http://androidplayground.net/web/

they have been spamming the market all day, hope someone can get them shut down.

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Android : ListView With Different Types Of Views?

Jul 2, 2009

I'm trying to make a ListView when every item in that list can be a different type of View. for example the list could be: 1. TextView 2. ImageView 3. MyCustomView

I understands that in order to make a list I need to use an Adapter. the problem is that the Adapter uses a single layout for all of the list items, which will not support the different views.

my goal is to make an abstract View list when I can dynamically add and removes items in that list (each item is a View or subclass of it).

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Android : Use Each Of Droid's Different Messaging Types?

May 28, 2009

I've been working with Android for well over a year now, but I still have trouble determining when different types of messaging/communication between processes/threads should be used. I'm mainly talking about broadcasting Intents, using AIDL for services, using Handlers to send messages and socket communication.

Many of these tools can be used to accomplish similar tasks, but which is better suited to particular situations?

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Android :: Swiftkey - Types A Letter 2 Or 3 Times

Aug 27, 2010

just wondering if anyone else here ever has this issue and if theres something to fix it? im using swiftkey and sometimes it just decides to go nuts and types a letter 2 or 3 times even though i only hit it once and then the word suggest screws up and also when i hit the spacebar once it goes nuts and puts in a period and starts a new sentance.

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Android :: Can Pass Different Types Of Parameters To An AsyncTask

Oct 13, 2010

I want to implement a generic, thread save class which takes the RessourceId of an ImageView and the Url (http) where the desired image file is stored. It'll download the image and fills the src of the ImageView in the UiThread.

I thought AsyncTask would be the best thing for me. However I noticed that I only can pass one type of parameters to the doInBackground() Method. Like an Array of Urls. Is that true? What would u suggest me?

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Android : Bluetooth Device Types / Can I Change It?

Nov 3, 2010

I have a weird issue, I have a Bluetooth speaker that I used for music on my Blackberry Storm, the storm automatically recognized that the speaker was a speaker, but the droid recognizes it as headphones, which is an issue, because the speakers are a2dp, and it's using the headset profile, which makes the sound quality SUCK!

Anyone have any idea how I can change it? I've tried unpairing and repairing it like 3 times now...

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Android : Different Types Of View In ListActivity / BaseAdapter?

Feb 22, 2009

In a list, is it possible to have different kind of views, inflated from different layout XML?

I started with the sample in the API Demo, using the Efficient Adapter, and it starts like this Code...

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Android : Viewing App Features (MIME Types, Etc)?

Sep 28, 2010

Is there any way (and preferably a pre-existing tool) to view the external features of an app, in particular the MIME types an activity supports?

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Android : List Of Droids MIME Types?

Feb 12, 2009

I can't seem to find out how a MIME type is found. For instance, say I want my application to bring up Contacts. Where can I find the MIME type for that task? I currently have the following:

Intent intent = new Intent(); intent.setAction(Intent.ACTION_GET_CONTENT); intent.setType("*/*");

Intent newIntent = Intent.createChooser(intent, null); startActivityForResult( newIntent , SHOW_VERIFY_ACTIVITY );

And the wildcards work. But I would like to be more explicit. Like the following:

intent.setType("vnd.android.cursor.item/contacts");

...but is not valid.

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Android : Use Multiple MIME Types In Droid?

Nov 8, 2009

Is there a way to use setType() and supply multiple broad types (like images and video)?

I'm using an ACTION_GET_CONTENT. It seems to be working with just comma-separated types.

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Android : Get Localized Label Of Phone Types?

Aug 24, 2010

When changing the custom locale the label of the phone types change to the appropriate language. Does anybody know how to get the localized label of the phone types?

I pick a contact in my app to get its phone number and if there is more then one number I use an AlertDialog to let the user select the currect one. In this pick list, I want to show the label of the type, so it's easier for the user to select. Since they labels are somewhere in the Android system, it must be possible to get the localized label. Unfortunately, the Phone.LABEL is null when reading the phone number.

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Android :: Listview With Different Xml For Rows

Sep 13, 2010

i want to implement listview with uses different xml layouts for rows depending on underlying item. A non optimal solution will be int getView method just to inflate every time a new view depending on the item from the adapter. Is there a better way to do this?

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Android :: ListView With 2 Different Rows?

Mar 24, 2010

is it possible to let my ListView show 2 different rows? On the picture you can see at the top something like a "teaser", the other rows are normal ListView. The screenshot is from the iPod. With their framework it is possible to show 2 different row styles. I badly need this on Android... Otherwise I would use a tabel design. But adding rows dynamically would be such an overhead instead of using ListView SimpleAdapter addItem...

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Android :: How To Launch Viewer For Common File Types?

Apr 9, 2009

Is there a way to launch a viewer for common file types like TXT, DOC, XLS, PDF from within an app, like Gmail does. Maybe a Google Docs api to pass the file to GD and have it open in the browser?

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Android :: How To List Data Types Phone App Operates With?

Nov 18, 2010

In the scenario that I made up a user chooses an application and and I offer him/her the available pieces of data to operate on. I know that the possible data type for an application is specified in its manifest file and I suppose that this information is available, but I have some difficulty finding out what the data content type for application is?

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Android :: Relative Speeds Of Telephony Managers Types?

Nov 2, 2010

There are a number of network types defined in TelephonyManager:
NETWORK_TYPE_GPRS
NETWORK_TYPE_EDGE
NETWORK_TYPE_UMTS
NETWORK_TYPE_CDMA
NETWORK_TYPE_EVDO_0
NETWORK_TYPE_EVDO_A
NETWORK_TYPE_1xRTT
NETWORK_TYPE_HSDPA
NETWORK_TYPE_HSUPA
NETWORK_TYPE_HSPA
Is there any info out there that describes what range of speeds you can expect on each of these? If that isn't available, it would be nice to be able to order them based on speed.

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Android : Using Intents / Intent Filters And Mime Types?

Feb 22, 2009

I've been grappling with an issue all day.

I am trying to create a program to deal with .torrent files that are clicked on and/or downloaded by the browser. Currently the downloader reports "Cannot download. the content being downloaded is not supported on the phone"

Im fairly sure this is doable as i recently encountered the same issue with pdf files untill i installed a pdf reader.

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Android : Are Primitive Types Garbage Collected In Droid?

Mar 18, 2010

I know this may be a dumb question, but my background is more in c++ and managing my own memory.

I am currently cutting down every single allocation that I can from one of my games to try and reduce the frequency of garbage collection and perceived "lag", so for every variable that I create that is an Object (String for example) I am making sure that I create it before hand in my constructor and not create temporary variables in simple 10 line functions... (I hope that makes sense)

Anyways I was working though it some more tonight and I realized that I a may be completely wrong about my assumption on garbage collection and primitive types (int, boolean, float) are these primitive type variables that I create in a 10 line function that gets called 20 times a second adding to my problem of garbage collection?

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Android :: Listview With Different Rows (layouts)

Aug 13, 2009

I want to make a listview that has different rows (layouts). I will load the data from a webservice and it can be 2 or more layouts i have to generate then. I am creating a social network app and want to show a stream of the users activity. So when he made a comment, make a new friend, this all has to come in the same list.. I load 1 XML file with multiple different child objects (comment, friend) so i can see which layout i have to use........

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Android :: Animate Rows Within ListView

Sep 29, 2010

I saw the Android app "Mobisle Notes Free" implement a really cool ListView, where a row gets moved to the bottom if its checkbox is checked. It's not just a simple refresh, but an actual animation where you see the row travel to the bottom. Does anyone know how to implement this?

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Android :: Inserting Two More Rows In To Database

Aug 5, 2009

Looks to me like every time you run your app, you insert two more rows in to the database, so the first it will have 2 rows, then 4, 6, 8, etc. On Wed, Aug 5, 2009 at 1:12 PM, saptarshi chatterjee <

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Android :: Merge A Rows In Column

Jun 15, 2009

In my activity i am using table layout.I have 5 rows and 5 colums. To merge (or) span a columns in a row we use android:layout_span='2' I want to merge (or) span 2 rows in one column.

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