Android :: Efficient Way To Store Images

Aug 3, 2010

My application requires that when a snapshot is taken it must store in memory and next time when I restart the phone I must get a thumbnail of that photo in list of photos and the full scale photo when I click on it.There are 2 ways I know.

1. Store images directly. Concern here is every time it has to hit directory to get image which takes some time.

2. Store all images in single xml. Concern here is XML will be too big and takes time to parse.

Android :: Efficient Way to store images


Android :: Best Efficient Data Structure To Store Object In Android Application

Sep 10, 2010

I want to build a data structure in my application to store many entries indexed by keys. Each entry has several parameters to retrieve and update.

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Android :: Is It Efficient To Use Text File Or XML File To Store Static Data

Jul 31, 2009

I have some reference data in a text file (~5MB) that I want to use with might android application.The file is of the format:
1|a|This is line 1a
1|b|This is line 1b
2|a|This is line 2a
2|b|This is line 2b
2|c|This is line 2c

What I want to know is the most efficient way (less memory, fast, size etc.) to use this file within my application.

a.) Should I save the file as a raw resource and open and read the whole file whenever I need a certain line.
b.) Should I convert the file to XML and use XPath to query the file when ever I need to look up a value
<!--sample XML -->
<data>
<line number="1">
<entry name="a">This is line 1 a</entry>
</line>
</data>
c.) Should I just copy & paste the whole file as a static string array in the application and use that.
[EDIT] I will also need to search this file and jump to arbitrary keywords e.g. "line 1a".

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Android :: Best Way To Store Images Within App?

May 5, 2010

I'm just looking for some insight into what would be the best way for me to store images as part of my app.

I have an activity that represents a 'Job' which has a couple of edittext's and underneath was planning on using the Gallery component to show images relevant to this job.

The job data is stored in a database (on the sdcard) so was also thinking of creating a table to store 'JobImages' and having each image stored as a byte array.

But I'm not sure if it would be better to store the images directly on sdcard under a folder structure specific to my application and the job. E.g. using the job ID number as a folder name.

Depending on which method I use will greatly determine the code that goes into an 'adapter' that allows me to bind to the gallery component so before I begin I was wondering if anyone has had the same design problem and what option they chose.

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Android :: Best Way To Store Application Images Taken Via Camera

May 5, 2010

I'm just looking for some insight into what would be the best way for me to store images as part of my app. I have an activity that represents a 'Job' which has a couple of edittext's and underneath was planning on using the Gallery component to show images relevant to this job. The job data is stored in a database (on the sdcard) so was also thinking of creating a table to store 'JobImages' and having each image stored as a byte array.

But I'm not sure if it would be better to store the images directly on sdcard under a folder structure specific to my application and the job. E.g. using the job ID number as a folder name. Depending on which method I use will greatly determine the code that goes into an 'adapter' that allows me to bind to the gallery component so before I begin I was wondering if anyone has had the same design problem and what option they chose.

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Android : Where Should Store Images / Doesn't Have An SD Card?

Jun 19, 2010

There are a few G1 users reporting that my app won't display images. I can only imagine this is because they don't have an SD card. My app is heavy on images. Is it appropriate to store images on the internal memory? I don't even know if there'd be enough space.

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Android : Store Images From Url / Save It In SD Card?

Jul 21, 2010

How to save the images into SD card which i can able to retrieve from the URL link.

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Android :: Store Downloaded Images Into Droid SD Card

Aug 26, 2010

I am developing app which downloads the images from the web site and then i am displaying them as slide show. now i want save the downloaded images into my SD card.

My Current Trying Code is...

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Android : Bitmap To Bytes - Store All Images In Server

Sep 27, 2010

Am trying to store all images in my server, then i need to show based on requirements, i am able to store and restore bitmap bytes but i cant recreate the bitmap using stored bytes , pls find my code below and suggest me a solution if i doing wrong.

Converting Bitmap to Bytes. Code...

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Android :: Store 100 Images And Sounds Files In Sql Lite?

Sep 20, 2010

I need to store 100 images and sounds files in sql lite.is it possible to store this data

how much mb of data available in sql lite.

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Android :: Store Remote Images In Application Resource Folder

Sep 17, 2010

Is there any way for us to store remote image in apk resource folder. I developed one application for showing list of images.user have interaction with the images. Now I done this by place image before packaging. Now I want to supply image from remote server. Which way is better and how to do?

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Android :: Store.Images.Media.get Bitmap Returns Error

Aug 31, 2010

ContentResolver cr = getContentResolver(); Uri pic = Uri.parse("content://media/external/images/media/3");
Bitmap bm = Media.getBitmap(cr,pic); The above code is written in onCreate method of my Activity class. It throws the following error:
08-30 12:27:22.352: WARN/System.err(245): java.io.FileNotFoundException: No content provider: [content://media/external/images/media/3]
What could be wrong? The file in question is there because I launched Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.INTERNAL_CONTENT_URI) in another method and got back the Uri of the picked image from the returned intent.

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Android :: Store.Images.Media. Show Pictures In Full Size?

Aug 9, 2010

I guess this question has been asked before, but I can't seem to find a proper answer/solution. Have a note-taking app, which allows to take pictures. For that I start an intent, that starts up the built-in camera-app. So far so good. But when I show that image in my app, it's in a much smaller format The funny/weird thing is, that the camera-app did take a full-resolution picture! But for some reason I can't get the full version to show in my app? So, when I use the standard Android Gallery app, and go to that picture, it is very obvious that it's full size (I can zoom in and see details I really can't see when I zoom in, in my own app). Also, the dimensions are really those of the original picture, taken with the 5MP camera. In my app, they are very small. My phone has Android 2.2, but the same happens on my emulator (Android 2.1). How should I retrieve the pictures in my app? Tried a couple of ways, but none works :( Don't need a complete example (allthough that's very welcome), just a few clues are enough to search for myself.

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Android :: Store Remote Images And Audio Files In Droid Not In Sd Card?

Sep 18, 2010

I developed one app it is displaying image and play audio along with the image.for this application i want to get images and audio files from remote server and store those on inside apk

1) i heard about sqllite in mobile.is this database hold image,mp3 files
2) i don't want to store images sd card.

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Android :: Built-in Camera Use Folder Called DCIM To Store Captured Images?

Nov 13, 2010

I am developing an app which uses the phone's default camera application to capture an image and then allow the user to perform some basic editing.I want the image captured to be saved in a location that is consistent with the stock camera application. Can I use the DCIM folder and assume all phones will use that location?

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Android :: Sample Code To Store / Retrieve Images In SQLite Database In Droid?

Dec 16, 2009

I want to know how to store the images in SQLite database in android.and also how to retrieve it. anyone give the samplecode or any URL give me to develop my application.

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Android :: How To Store Images In Sqlite Database Using Android?

Nov 4, 2009

I want to store Images(using insert statement) in sqlite database & retrive that image from database and display that image on android emulator.

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Android :: Directory To Store Files Generated By App (audio, Video Files Or Images)?

Apr 24, 2009

Can anybody advice what is the recommended directory to store files generated by your application: audio files, video files or some images.

If the phone contains SD card, it is clear that files should be saved there, but if there is no any external storage. where would you recommend to save to?

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Android :: More Efficient Map Overlays

Nov 2, 2009

In my app I am drawing bus routes on top of a MapView. The routes have anywhere between a dozen and a few hundred GPS coordinates that describe the route that the bus takes. The problem I'm having is that once I draw out all these lines panning/zooming the MapView is incredibly slow (even clicking the 'Back' button takes a minute to happen). I'm not sure how relevant it is, but I put in some debug code then checked the logcat output and the MapView is repeatedly calling the draw() method of the Overlay whether anything has changed or not. This is happening several times a second and is causing a massive amount of garbage collection to happen (2-3 MB every second).

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Android :: Efficient Matrix Library

Jun 21, 2010

Is there any efficient linear algebra library for android? I need to compute matrices of different sizes(also bigger than 4x4) and rectangular too.

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Android :: Efficient Map Overlays In On Google Map

Nov 24, 2010

I want to do the following and am kind of stuck on these for a few days:

1) I was trying to draw poly lines ( I have encoded polylines, but have managed to decoded those) that move when I move the map(the only solution that I found was for Geopoints to be transformed into screen co-ordinateswhich wont move if I move the map !)

2) I have used helloItemizedOverlay to add about 150 markers and it gets very very slow.any idea what to do ? I was thinking about threads(handler)

3) I was looking for some sort of a timer function that executes a given function, say, every 1 minute or so.

4) I was also looking for ways to clear the Google map from all the markers/lines etc

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Android :: Efficient Way To Clone JSONArray

May 26, 2009

What's the most efficient way to clone a JSONArray?

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Android :: More Efficient Way To Get Resource ID Of Drawable From Name

Aug 21, 2009

I have some image names stored in a database, but the images themselves are in the /res/drawable folder of the application. I need to assign these images to some views at runtime, and I'm currently doing it this way:

// public static final String DRAWABLES_PATH = ":drawable/";
int resId = getResources().getIdentifier(packageName+DRAWABLES_PATH +imageName,null,null); mButtonX.setBackgroundResource(resId); //
Is there a more efficient way to do it? Or should I be storing the images directly in the database (they are many)?

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Android :: When Using The - Efficient Adapter - Holder Is Sometimes Null

Aug 22, 2010

I'm using a mixture of the "Efficient Adapter" and the EndlessAdapter from CommonsGuy, and sometime the holder in getView() is null.

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

I've put the rest of the code for both of my classes here, as it's rather large to paste inline.

Once the whole data set is loaded, scrolling up & down causes rows to disappear and re-appear too.

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Android :: Efficient Mapping Of Strings To Ints

Dec 29, 2009

Currently I'm using a HashMap to map the strings to int and the int values need to be frequently accessed. I'm looking for a better way to do this if possible with minimal object creation, and preferable being able to store the values as primitive ints without wrapping them with the Integer class. (Basically, the reverse of the SparseArray's int->object mapping.)

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Android :: Memory Efficient Image Resize

Jul 10, 2010

I am trying to reduce the size of images retrieved form the camera (so ~5-8 mega pixels) down to one a a few smaller sizes (the largest being 1024x768).It looks like the OOM happens during the createBitmap. Is there a more memory efficient way to do this? Perhaps something that doesn't require me to load the entire original into memory?

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Android :: String Ends With - Most Efficient Way To Manipulate

Jun 24, 2010

It happens that the user click on enter where i dont want to include it as a part of my input the string can end with 3 times so just replacing one wont do the job

My solution was:

CODE:........

Or just to point there without the new but i want later to dump the garbage. Or at least to dump values to the gc now ....

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Android :: Efficient Way Of Updating UI From Service Than Intents?

Apr 12, 2010

I currently have a Service in Android that is a sample VOIP client so it listens out for SIP messages and if it recieves one it starts up an Activity screen with UI components. Then the following SIP messages determine what the Activity is to display on the screen.
For example if its an incoming call it will display Answer or Reject or an outgoing call it will show a dialling screen. At the minute I use Intents to let the Activity know what state it should display. An example is as follows:

Intent i = new Intent();
i.setAction(SIPEngine.SIP_TRYING_INTENT);
i.putExtra("com.net.INCOMING", true);
sendBroadcast(i);
Intent x = new Intent();
x.setAction(CallManager.SIP_INCOMING_CALL_INTENT);
sendBroadcast(x);
Log.d("INTENT SENT", "INTENT SENT INCOMING CALL AFTER PROCESSINVITE");

So the activity will have a broadcast reciever registered for these intents and will switch its state according to the last intent it received...............

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Android :: Efficient Way To Draw Multiple Identical Objects?

Sep 26, 2010

I would like to make a game out of many cubes and am planning on putting it on mobile platforms and also on the web using webgl. My problem is when I make a drawelements call per cube I take a hit on the frame rate. Is there a way I can make a single draw call to opengl es to draw them? The only difference between the cubes would be position and color.

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Android :: Server Socket Programming In 1.5 / Most Power Efficient Way?

Dec 2, 2009

I am doing a project where I have too develop an application that listens for incoming events by a service. The device that has to listen too events is an Android phone with Android SDK 1.5 on it. Currently the services that call events only implement communication trough UDP or TCP sockets. I can solve my problem by setting up a ServerSocket, but i doubt that's the most power efficient way. This application will be running most of the time, with Wi-Fi on, and I'd like too reach an long battery duration. I've been looking for options on the internet for my question for a while but i couldn't get a real answer.What is the most efficient way too listen to incoming events? Should I make an ServerSocket? or what are my options?Are there any other implementations that are more power efficient?

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