Android :: Way To Handle Multiple GetView Calls From Inside An Adapter?

May 20, 2010

I have a ListView with custom ArrayAdapter. Each of the row in this ListView has an icon and some text. These icons are downloaded in background,cached and then using a callback, substituted in their respective ImageViews. The logic to get a thumbnail from cache or download is triggered every time getView() runs.

Android :: Way to handle multiple getView calls from inside an Adapter?


Android : Leaking Bitmaps From Adapter's GetView

Mar 31, 2009

I definitely have a memory leak problem and i'm trying to figure out there. After 6-10 config changes i'm getting out of memory in regards to BitmapFactory. I'm kind of suspect that this is going on within adapter. I have a listview . ListItems are an thumbnail image ( ImageView ) and TextView for text.

Here is the getView code.

CODE:..................

And get ThumbnailBitmap() is basically BitmapFactory.decodeByteArray ..

Is it possible that i'm leaking drawables ? Heap is not increasing by the way .

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Android :: Detect In An Adapter When Getview() Returned View?

Jul 15, 2010

I have a list and i want to check is the view is returned so i can call loadingAnimation.start() to make a imageview insite listview animate
Let me tell you what i mean.. code...

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Android :: Adapter Filtering Via GetView Still Leaves Gray Lines

Sep 23, 2010

My application uses a list of media files on the phone, i.e. images, audio and video. It also allows the user to filter the list via some checkboxes in a menu, so the user can choose to show or hide each type of files. The way I've been doing this is by putting this in the adapter's getView():

// don't show unwanted file types if (cmo.hasType(MediaType.AUDIO_FILE)){
if(!prefs.getBoolean(PREFS_SHOWAUDIO, true)){ return new ViewStub(mContext);;
} }else if(cmo.hasType(MediaType.IMAGE_FILE)){ if(!prefs.getBoolean(PREFS_SHOWIMG, true)){
return new ViewStub(mContext);;
} }else if( cmo.hasType(MediaType.VIDEO_FILE)){ if(!prefs.getBoolean(PREFS_SHOWVIDEO, true)){ return new ViewStub(mContext);; } }

Which is quite effective in the sense that the list doesn't show those elements. However, the ListView still renders a 1px grey line between each View, even if they are ViewStubs, meaning I see a thick gray line whenever a group of consecutive items are filtered away. How can I get rid of those lines? Should I create a new data array, containing only the elements that should show a view?

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Android :: ConverView Parameter In GetView() Of My Custom Adapter For Gallery Is Always NULL

Nov 14, 2010

I have made customAdapter (which extends BaseAdapter). I want to reuse the old views..

So I am checking:

CODE:........................

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Android :: Should App's With Multiple Layouts Have Multiple Activities To Handle Each

Jul 1, 2010

I'm planning to develop and app that presents the users with several different screens (of different information).
Was wondering what would be the best way to implement this?

Is it better to have separate XML layouts and an activity to display and allow the user to interact with each screen of data?

OR would handling all of these in the same activity be more efficient (and dynamically load / unload each layout)?

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Android :: ListView Animation Of Views Inside Adapter That Got Updated

Aug 29, 2010

Im using ListView to to show some custom data, once data is updated in the adapter i call notifyDatasetChanged(), so the view will get updated, all of this works well, my issue though is i would like to run an animation once only on items that got changed when the adapter was updated. currently i keep a copy of all the changed objects and i tried to animate the correct items through the getView() call.

However if i do it only once for every getView call then i see no animation most of the time on items that changed. if i continue to do so in successive getView calls i see animation on items that don not change as well and also the ones that changed get animated again and again.

Im guessing sometimes android calls the getView() for other reasons than showing the generated view immediately, and thats the reason it doesnt work if i do it once.

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Android :: Handle Onclick Event Of Button Inside Popup Window

Jun 8, 2010

In my application i have a button initially on the screen and in onclick of the button ,popup window should open. In the popup window i have an imagebutton , now on click of this button i want to start an activity. The popup window opens but i dont understand how to handle the onclick of the imagebtn inside popup window.

In main.xml i have a button and in popup_example.xml i have an imagebutton.

Java code is as follows:

CODE:..........

And i have two xml layouts.........

CODE:..................

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Android :: How To Handle Multiple Adapters For One ListView?

Jul 6, 2009

Currently I'm trying to find an efficient way to handle the following scenario. Please comment on my current implementations and all feedback is greatly appreciated! I have about 7 adapters with data. This data comes from database and some come from xml queries over the internet which are kept static in memory. In my current implementation I re-use one ListView constantly to display this data as requested by the user. Here are the questions: 1. Is this a proper approach? or should I have a ListView for every Adapter?

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How To Handle Multiple Property Files With Android

Mar 26, 2012

I would like to have multiple property files checked in to my project that each define the same properties but for different environments. For instance, a development one and an operational one that each point to a different server.

Ex. myapp.properties.dev
-> server.host=1.2.3.4
-> server.port=8080
myapp.properties.ops
-> server.host=5.6.7.8
-> server.port=8081

I would like to have some way when building my android project to an apk to specify which property file to include and rename it to just myapp. properties.

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How To Handle Calls In Different Way

Dec 1, 2011

I'm actually going to have some research on GSM security issues for my Master thesis, within my research I ended up with an issue that I have to solve and I need to provide some experimental results to the referees so that they approve my work.I have to capture incoming voice data and do a few processes on it and then play it back on phone's speaker and for outgoing voice I need to receive it using phone's microphone and after doing some processes let the phone's hardware to transmit it over GSM network. I've already installed android SDK and the desire platform, I have a few programming background with C# so I think there will be not much problem with Java for me. But I'm actually lost within the SDK, I don't know how to manage my app so that it prevents android powered device from directing incoming voice into speaker and instead let me have the raw data and manually direct it into the speaker; same goes for the outgoing voice.

I'm almost disappointed and I'm thinking that it might not be supported by firmware. If it is not feasible in android powered devices so which phone does actually support it? Because AFAIK there's no other mobile OS out there that developers can easily develop powerful apps using its SDK.

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Android :: Need Twitter Client To Handle Multiple Accounts

Jan 8, 2010

So I've poked around a bit, and am mildly disappointed with what I've found so far in my search. I need a Twitter client that can actually reliably deal with two accounts, and not mix them up. I tweet for an organization as well as my own account, and cannot have it bugging up and switching accounts as I've heard that Twidroid does. FYI, I'm using the free version of Twidroid now, and have no complaints about it thus far, but I have not been wowed by it either. Does anyone have any experience with any other clients, or should I just suck it up and throw down for Twidroid? I don't mind paying for an app, as long as it functions solidly.

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Android :: How To Get Facebook Program To Handle Multiple Acounts?

Aug 15, 2010

I have 3 facebook accounts want to be able to switch between them with one app.

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Android :: Multiple Column List/grid With Adapter And OnItemClickListener

Jun 19, 2010

I have a simple grid with rows of items and columns of options on each item. Of course I can manually link OnClick actions to cell items through specific resource IDs:

CODE:.............

What I'd prefer to to is use a ListView or a GridView and an Adapter. Is there a way to get cell id's from one of those? I was hoping that ListView setOnItemClickListener() would call me with the view id of a view within row 'position': onItemClick(AdapterView parent, View view, int position, long id) { ... }

But no go. Maybe a different approach?

Update:

I started with this:

CODE:.............

I'd assumed that I couldn't go into my Adapter and set child view OnClickListeners. Bad assumption. When I went back at this I gave it a try:

CODE:.................

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Android :: Multiple Styles Inside A TextView?

Oct 7, 2009

I was wondering if its possible to set multiple styles for different pieces of text inside a TextView. For instance, I am setting the text as follows:

CODE:...........................

Now, is it possible to have a different style for each text element? I mean bold for line1, normal for word1 and so on...

I found this http://developer.android.com/guide/appendix/faq/commontasks.html#selectingtext:

Get our EditText object. EditText vw = (EditText)findViewById(R.id.text);

Set the EditText's text. vw.setText("Italic, highlighted, bold.");

If this were just a TextView, we could do: vw.setText("Italic, highlighted, bold.", TextView.BufferType.SPANNABLE); to force it to use Spannable storage so styles can be attached. Or we could specify that in the XML.

Get the EditText's internal text storage. Spannable str = vw.getText();

Create our span sections, and assign a format to each.

CODE:............................

But it uses position numbers inside the text. Is there a cleaner way to do this?

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HTC EVO 4G :: YouTube App Can't Handle Multiple Uploads

Jul 13, 2010

this will be a fix in Froyo, supposedly due out by christmas for all us EVO owners. (unless you have rooted it already). YouTube App won't upload Multiple movies. I take several clips when documenting my friends and family. then I like to upload them all at the end of the day off the phone. This seems like a normal practice, but it is something that the YouTube app seems to have a problem with.

Here is the scenario:

I'm in Videos.
I click Share.
I choose YouTube from the Pop-up.
Then I choose my videos (plural).
Now they are all in the Que.
First video in the que uploads slowly, and then randomly stops at 40 or 50 or 60% saying "Waiting to retry"

This is the case for every single Multiple Upload I do. So I ran tests with: Gmail - no luck cause it get's stuck on "Sending" with no progress bar. Browser - upload disabled on Mobile devices over browser. What works is - Uploading 1 video at a time.

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Android :: Cursor Adapter - Binding Multiple Item Values In ListView

Jan 12, 2010

I have the following code to intantiate a SimpleCursorAdapter to use with a ListView. As you can see I have passed the R.layout.log_item to display the list items, and one value/control to bind to (TripDate).

SimpleCursorAdapter sca = new SimpleCursorAdapter(this, R.layout.log_item,c,new String[] {DBAdapter.KEY_LOG_TRIPDATE},new int[]{R.id.txtTripDate});

This works. I currently only have one widget in the layout xml, a TextView to hold the TripDate.
How do I pass multiple binding parameters for the additional widgets in the layout? So I can also display other info.

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Android :: How To Use Multiple Views Inside A Single Activity With A Canvas?

Nov 7, 2010

Basically what I am trying to accomplish is I want a canvas I can pass bitmaps to, to be displayed on the screen with the rest of my view objects (buttons, textviews, etc).

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Android :: Access Views Inside Layout When I Reuse It Multiple Times?

Aug 6, 2010

I have read the Android UI trick 2 on Android developers, which tells people how to include a layout in another layout file multiple times, and give these included layouts different id. However, the sample here is overwriting the layout id, not the id of the views IN this layout. For example, if the workspace_screen.xml looks like this: And I include it three times in another layout file. Do I end up with three TextViews with id firstText, and another three with secondText? Isn't there an id collision? And how do I find the secondText TextView in the third included layout with findViewById? What should I input in the findViewById method?

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General :: Create A Folder With Multiple Other Widgets Inside?

May 26, 2013

I'm looking to clean up my home screens a little and would like to be able to create one on-screen folder or widget that can hold multiple other widgets for quick access and easy launch. Specifically, I have quite a few ColorNote files that I need quick access too, but don't necessarily want clogging up my home screen. I'm hoping there's something out there - either a folder organizer, launcher, or widget that can do this for me.

I currently use GoLauncher and FolderOrganizer on my SG Note.

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Android :: Any Application For Placing Multiple Calls In A Row

Mar 25, 2010

I've been hunting for a solution for days and can't find an answer. I've got an application where I need to place multiple calls in a row. I can invoke the dialer just fine and it starts calling the number. The problem is that after the call is over the call log comes up. I don't want the call log to come up. I want the dialer to return to my application after the call is over. How can I do this?

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Android :: Multiple Calls To SimpleCursorAdapater That Has A ViewBinder

Jul 30, 2010

I have a ListView populated using a SimpleCursorAdapter that has a ViewBinder, and I'm finding that when the ListView is displayed, ViewBinder#setViewValue is called 3 times for each row of the cursor.

CODE:................

And the third time from onMeasure again.

Firstly, is this expected behaviour?

If it is, then what's the best way of performing potentially expensive work in ViewBinder#setViewValue? For example, retrieving the results of another cursor whcih is used to construct the bound view.

Or am I approaching this from entirely the wrong view point?

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Android :: Multiple Calls To SimpleCursorAdapater#bindView

Oct 3, 2010

I am using setViewValue method of ShowViewBinder to access image inside row of listView. The idea is to load image from internet and display it inside row of listView.

To load image, I am starting new image loader thread, but what I discovered when debugging this code, for each row I am actually starting 3 or 4 threads. I don't understand why. The code in if (columnIndex == ...) is executing more than once.

My code goes something like this:

CODE:...................

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Android :: ScrollView With Buttons Inside / No Response Until Second Click On Any Button Inside

Oct 30, 2010

I've been a couple of days trying to solve this thing but I can'f figure it out.The problem is, simple activity, with simple layout, ScrollView -> LinearLayout -> and a lot of buttons inside the layout (within the scroll content). Everything works just fine but one tricky thing. When I click a button let's say at the top of the scroll content and inmediatelly I scroll down to the bottom of the content and I click other button there, nothing happens until I click a second time and all come to normal again.This can be reproduced anytime and it's code independent (i've tried more than 20 scenarios). I've not much experience in android yet but looks like the scroll listener stops the onclick listener or something like that.

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Android :: ListView Inside LinearLayout Inside ScrollView

Jul 7, 2009

So I've been extremely frustrated by this for a long time now.I've posted before, but can't seem to find a good solution. My goal is to have something pretty much exactly like the installed application details page in the Android Market.I need a list of items displayed along with other content above the list, and would like the content above to scroll up along with the list (exactly like the application details does for the "My Review" and other descriptive info).Due to responses to my previous posts, I came to believe that it really wasn't possible to do this with a ListView.So rather than using a ListView, I refactored my code to use a simple LinearLayout and add individual View items to the list, thinking I could just set each View as clickable and add an OnClickListener to each View in the LinearLayout.That's not working at all though, and now I'm getting even more frustrated.If someone can help me get the OnClickListener working, then I think it'll work, but I do need a separator for the LinearLayout.How do I add a separator like the one used for ListView to my LinearLayout?

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Android :: GetView Method Used And Where Is It Getting Called?

Sep 1, 2010

I am new to Android development and have been following the tutorials available on the Android website. I am currently on the section of tutorials for Views, specifically the one for Grid Views: Hello, Grid View Tutorial.I am having trouble understanding how views are made through an adapter. I understand that you must override the getView() method in your adapter class and in this method is where you define how your Views are set up. What I don't understand is where does getView() actually get called? Perhaps I've got the wrong kind of mentality here, but in the code below (the Grid View tutorial) I don't see any calls to getView() (or any other things used in the adapter class such as getCount()).

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Android :: GetView Vs BindView In A Custom CursorAdapter

Aug 20, 2010

I'm watching this video http://www.youtube.com/watch?v=N6YdwzAvwOA and Romain Guy is showing how to make more efficient UI adapter code using the getView() method. Does this apply to CursorAdapters as well? I'm currently using bindView() and newView() for my custom cursor adapters. Should I be using getView instead?

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Android :: Override GetView In SimpleCursorAdapter Gives NullPointerException?

Mar 8, 2010

I'm trying to change the content of a row in ListView programmatically. In one row there are 3 TextView and a ProgressBar. I want to animate the ProgressBar if the 'result' column of the current row is zero.

After reading some tutorials and docs, I came to the conclusion that LayoutInflater has to be used and getView() - overriden. Maybe I am wrong on this. code...

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Android :: Display Every Other String Within View GetView()?

Jul 19, 2010

I've made a customAdapter that accepts an ArrayList. The ArrayList contains a title and then a link. code...

I'm wanting to display the title and then have the on click listener to have the link. I'm having trouble however figuring out a way to do this.

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Android :: First 6 ListView Elements Are Continuously Being Invoked With GetView

Aug 18, 2010

When I check my logs, when using ListView, I see, that getView() method of a custom adapter is continuously invoked on first 6 elements, even if I scroll to the very end of the list.

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