Android :: Images Are Not Loaded From SDCard
Oct 16, 2009
I have an activity that loads and displays images from the SDCard. I create a new AVD, specify the desired image of the sd card (which has all my pictures already loaded), specify that AVD for deployment, and start the application. I noticed a strange behavior. At first, the images are not loaded; the getView method is never called, although the constructor of my adapter is called. If I close the application, and open the Gallery app that comes pre-installed, I see that the sd card folder has the correct number of images, and it 'displays' the first four. If I start my application again, those four images are displayed, and only those. If I go back to the Gallery application, open the sd card folder so that it loads all images, and restart my application, all images are successfully displayed. Any reason why this happens? I am using version 1.6, and (part of) my code is below: Code...
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Nov 9, 2010
I populate a ListView from the result of a Sqlite query; one of the fields is the image file name that i would like to show as image into a listview.
How can i do to show the image file?
I use
SimpleCursorAdapter(this, R.layout.list_name,cur,new String[] {"fields_list"}, new int[] { R.id.list...});
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Dec 12, 2013
I am developing an app that I wish to have pre-loaded with product images.Currently, I am accessing them from the resources folder 'drawable'. However, I also want the user to be able to add to list of products later by retrieving product information and products from a web server.
I can't access the resources folder at run time to save the images, so I need to have a single place to store them and retrieve them later.I have tried saving to the application directory, but am not having much success.I believe that storing images in the database is not considered good practice.
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Nov 18, 2010
In my project In the first section i have parsed the xml data of Video categories and image url links from My web service.I have parsed that data and receive that data in ArrayList in My main activity.The first ArrayList is the list of video categories and the second ArrayList is the the list of video image urls and i have to display ArrayList of image urls as ImageView in ListView ,i have no idea for that,please give me some solution.
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Oct 4, 2010
I'm trying to load/reference images from the app's assets folder from within a HTML page in a WebView. Unlike in most of the examples the HTML page itself is not located in the assets folder but is loaded from a server via http. The background of this question are some performance improvements which should reduce the loading time (and the amount of transferred data) by loading static images directly from the device. I'm not sure if Android has some restrictions here because there's a certain possibility to exploit the app by allowing access to the local file storage from a remotely loaded webpage.
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Apr 29, 2009
How can I retrieve all the images both in phone memory and external sdcard?
I need the image path, name and size information.
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Sep 8, 2010
Does anyone has the example of loading images from the sdcard to Image Switcher?
I'm a beginner of android here. Willing to learn.
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Sep 26, 2009
I have pushed around 10 files of each image(*.png ), audio(*.mp3) and video(*.mp4 & *.3gp) after that I have restarted the emulator and when I open the gallery application I see only a few files being present in sdcard. (in my case 1 video, 2 images and 2 audio clips) .
is this a bug in emulator?
because I have written a piece of code that displays the images/audio/video . But due to above mentioned issue I'm not able to display/play the images.
snippet of implementation is as follows code...
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Feb 15, 2010
I have several images present in different folders in my sdcard. I would like to display a list of thumbnails. So what I have done is while rendering any row in the list I read the file in an input stream, get the byte array, decode it to obtain a bitmap and set it in an imageview.
So far so good. But when I scroll the list, the list scrolls in jerks. I believe this is because decoding a bitmap from byte array takes some time. What I would like to know is that, is there any optimization which I can do to improve the performance, or better still is there any better method to achieve what I want ?
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Nov 24, 2009
In my application users take photos with an Activity that implements SurfaceHolder.Callback. The uri.toString() is then passed as an extra to a subsequent Activity that displays the image. All fine, except for in Android 1.6 the jpgs on the sdcard have a strange noise when looking at them through mac finder or win explorer after mounting the sdcard. The images have purple and yellow stripes on their upper half. Fine on camera gallery.
Here's some relevant code.
CODE:................
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Feb 22, 2009
I've got some code that downloads mp3s remotely over a streaming url connection... This all works fine but my problem is once the file is complete and I pull up the music app it's not there. A reboot of the phone and it now shows up... anyone know how to force this refresh to occur from without my code?
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Aug 16, 2010
I replaced my original sdcard with a sandisk 16gb card. Everything went well until I started getting these blasted read on errors. Earlymon suggested a fix from another board but I don't have a stand alone card reader so I couldn't do it that way.
I was wondering if I just backed up all my stuff from my sdcard to my iMac and then just reformatted my sdcard via the phone, would that solve my problems?
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Nov 2, 2009
I'm basically using the same method of loading bitmaps in OpenGL that the SpriteMethodTest example uses and have been unable to get rid of an annoying outline that appears around all of my images.
For example, If I were to load an image of a white circle on a white background, I would expect to see nothing. Instead, I would see my circle because its edge would be gray. In SpriteMethodTest, I replaced the background image with white and was able to see that the edges of the android images flying around also don't seem to be rendered correctly.
Does anyone know how to load images in OpenGL without having a thin outline appear around the images?
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Apr 6, 2010
I'm working to convert some background images to nine patch so they scale better on different phones.
The problem is that if I have the following resource structure: drawable-hdpi/background.png drawable-hdpi/button.png drawable-mdpi/background.png drawable-mdpi/button.png drawable-ldpi/background.png drawable-ldpi/button.png and then I drop a new drawable-hdpi/background.9.png file into the mix, it breaks button.png during the pre-compile. The error is "No resource found that matches the given name (at 'background' with value '@drawable/button').Simply removing that one nine patch file fixes the build. Should I be able to have some nine patch images and some normal ones, or to have nine patch only in hdpi but not mdpi or ldpi? This is Eclipse 3.5.1 with the latest ADT.
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Jul 18, 2010
Just curious how many have this issue.If you are unsure select the link below and find out pls.
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Apr 13, 2010
I have a huge UI, in which I have about 300 to 500 rows of data (Horizontal Linear Layout), with each row containing 3 to 4 views. If I load all the UI at once, it takes a long time. How best I can display this UI?
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Sep 20, 2010
Helloworld tutorial sample builds and runs just fine, except it doesn't show the text (i.e. loads apps). The only thing I see is that Emulator (Target 2.2 API level 8) comes up with just the "Android" in it. and then the emulator shows up a locked up screen in a while. Here is output from the console [2010-09-20 10:36:55 - HelloAndroid] Android Launch! [2010-09-20 10:36:55 - HelloAndroid] adb is running normally. [2010-09-20 10:36:55 - HelloAndroid] Performing com.example.HelloAndroid.HelloAndroid activity launch [2010-09-20 10:36:55 - HelloAndroid] Automatic Target Mode: Preferred AVD 'my_avd' is not available. Launching new emulator. [2010-09-20 10:37:56 - HelloAndroid] WARNING: Application does not specify an API level requirement! [2010-09-20 10:37:56 - HelloAndroid] Device API version is 8 (Android 2.2) [2010-09-20 10:37:56 - HelloAndroid] HOME is up on device 'emulator-5554' [2010-09-20 10:38:23 - HelloAndroid] Uploading HelloAndroid.apk onto device 'emulator-5554' [2010-09-20 10:38:27 - HelloAndroid] Installing HelloAndroid. apk.After I exit the emulator, I get the following errors. [2010-09-20 09:02:24 - DeviceMonitor] Sending jdwp tracking request failed! [2010-09-20 09:38:46 - ddms]null java.lang.NullPointerException at
com.android.ddmlib.JdwpPacket.writeAndConsume(Jdwp Packet.java:213) at com.android.ddmlib.Client.sendAndConsume(Client.ja va:573) at com.android.ddmlib.HandleHello.sendHELO(HandleHell o.java:142) at com.android.ddmlib.HandleHello.sendHelloCommands(H andleHello.java: 65) at com.android.ddmlib.Client.getJdwpPacket(Client.jav a:670) at com.android.ddmlib.MonitorThread.processClientActi vity(MonitorThread.java:317) at com.android.ddmlib.MonitorThread.run(MonitorThread .java:263)
[2010-09-20 09:38:47 - ddms]null java.lang.NullPointerException at com.android.ddmlib.JdwpPacket.writeAndConsume(Jdwp Packet.java:213) at com.android.ddmlib.Client.sendAndConsume(Client.ja va:573) at com.android.ddmlib.HandleHello.sendHELO(HandleHell o.java:142) at com.android.ddmlib.HandleHello.sendHelloCommands(H andleHello.java: 65) at com.android.ddmlib.Client.getJdwpPacket(Client.jav a:670) at com.android.ddmlib.MonitorThread.processClientActi vity(MonitorThread.java:317) at com.android.ddmlib.MonitorThread.run(MonitorThread .java:263)
[2010-09-20 09:50:11 - DeviceMonitor]Sending jdwp tracking request failed! [2010-09-20 09:59:29 - DeviceMonitor]Sending jdwp tracking request failed! [2010-09-20 09:59:31 - Logcat]device not found com.android.ddmlib.AdbCommandRejectedException: device not found at com.android.ddmlib.AdbHelper.setDevice(AdbHelper.j ava:736) at com.android.ddmlib.AdbHelper.executeRemoteCommand( AdbHelper.java: 373) at com.android.ddmlib.Device.executeShellCommand(Devi ce.java:285) at com.android.ddmuilib.logcat.LogPanel$3.run(LogPane l.java:516)
[2010-09-20 10:40:46 - DeviceMonitor]Sending jdwp tracking request failed!
Also, is there a way to capture the TEXT from CMD window that runs while the Emulator is coming up
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Sep 20, 2010
My Helloworld tutorial sample builds and runs just fine, except it doesn't show the text (i.e. loads apps). The only thing I see is that Emulator (Target 2.2 API level 8) comes up with just the "Android" in it. and then the emulator shows up a locked up screen in a while. Here is output from the console
[2010-09-20 10:36:55 - HelloAndroid] Android Launch!
[2010-09-20 10:36:55 - HelloAndroid] adb is running normally.
[2010-09-20 10:36:55 - HelloAndroid] Performing com.example.HelloAndroid.HelloAndroid activity launch
[2010-09-20 10:36:55 - HelloAndroid] Automatic Target Mode: Preferred AVD 'my_avd' is not available. Launching new emulator.
[2010-09-20 10:37:56 - HelloAndroid] WARNING: Application does not specify an API level requirement!
[2010-09-20 10:37:56 - HelloAndroid] Device API version is 8 (Android 2.2)
[2010-09-20 10:37:56 - HelloAndroid] HOME is up on device 'emulator-5554'
[2010-09-20 10:38:23 - HelloAndroid] Uploading HelloAndroid.apk onto device 'emulator-5554'
[2010-09-20 10:38:27 - HelloAndroid] Installing HelloAndroid.apk.
After I exit the emulator, I get the following errors.[2010-09-20 09:02:24 - DeviceMonitor]Sending jdwp tracking request failed![2010-09-20 09:38:46 - ddms]nulljava.lang.NullPointerException
at com.android.ddmlib.JdwpPacket.writeAndConsume(Jdwp Packet.java:213)
at com.android.ddmlib.Client.sendAndConsume(Client.ja va:573)
at com.android.ddmlib.HandleHello.sendHELO(HandleHell o.java:142)
at com.android.ddmlib.HandleHello.sendHelloCommands(H andleHello.java:65)
at com.android.ddmlib.Client.getJdwpPacket(Client.jav a:670)
at com.android.ddmlib.MonitorThread.processClientActi vity(MonitorThread.java:317)
at com.android.ddmlib.MonitorThread.run(MonitorThread .java:263)
[2010-09-20 09:38:47 - ddms]null
java.lang.NullPointerException
at com.android.ddmlib.JdwpPacket.writeAndConsume(Jdwp Packet.java:213)
at com.android.ddmlib.Client.sendAndConsume(Client.ja va:573)
at com.android.ddmlib.HandleHello.sendHELO(HandleHell o.java:142)
at com.android.ddmlib.HandleHello.sendHelloCommands(H andleHello.java:65)
at com.android.ddmlib.Client.getJdwpPacket(Client.jav a:670)
at com.android.ddmlib.MonitorThread.processClientActi vity(MonitorThread.java:317)
at com.android.ddmlib.MonitorThread.run(MonitorThread .java:263)
[2010-09-20 09:50:11 - DeviceMonitor]Sending jdwp tracking request failed!
[2010-09-20 09:59:29 - DeviceMonitor]Sending jdwp tracking request failed!
[2010-09-20 09:59:31 - Logcat]device not found
com.android.ddmlib.AdbCommandRejectedException: device not found
at com.android.ddmlib.AdbHelper.setDevice(AdbHelper.j ava:736)
at com.android.ddmlib.AdbHelper.executeRemoteCommand( AdbHelper.java:373)
at com.android.ddmlib.Device.executeShellCommand(Devi ce.java:285)
at com.android.ddmuilib.logcat.LogPanel$3.run(LogPane l.java:516)
[2010-09-20 10:40:46 - DeviceMonitor]Sending jdwp tracking request failed!
Also, is there a way to capture the TEXT from CMD window that runs while the Emulator is coming up?
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Jul 27, 2010
How do I figure out, if an app is loaded for the first time after it has been downloaded. I mean when the app is first bought/downloaded from market, how will I figure it that this is the first time(never has been run on this phone) this is going to run hence I can throw up some registration activity?
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Apr 6, 2010
I have an Android application that works off of a smaller database, around 300 entries. To view the database, I have created a custom view that contains individual rows of data. Then I query the database, and add each line to a newly created custom view.
The problem is that it takes a little white for all of this to be created/loaded, so when you open the application, it sits for a few seconds.
How can I load one line of data, then display it, then the next, append it, etc.?
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Jun 2, 2010
I have an extended BaseAdapter in a ListActivity: private static class RequestAdapter extends BaseAdapter{ and some handlers and runnables defined in it
CODE:.......
In the getView function of the Adapter, I'm getting the view like this:
CODE:..........
and the image is getting loaded this way:
CODE:.................
Now, the problem I'm having is that if there are more items that need to display the same picture, not all of those pictures get displayed. When you scroll up and down the list maybe you end up filling all of them.
When I tried the commented out line (holder.avatar.setImageBitmap...) the app sometimes force closes with "only the thread that created the view can request...". But only sometimes.
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Sep 23, 2010
Is there something like a an Android file explorer so that the application could be installed from an SD card on versions older than 2.2 if the signed .apk file was manually copied onto the SD card? (Kind of like installing from a web page.)
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Jun 23, 2010
1.myJpegFile = new File("images/jpegImage.jpg");
2.output = new BufferedOutputStream(new FileOutputStream(myJpegFile));
3.encoder = JPEGCodec.createJPEGEncoder(output);
4.encoder.encode(myJpegImage); Please could you give me the equivalent code for line no. 3 and 4 in Android?
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Oct 19, 2010
Does all resource (all in res folder if on eclipse IDE), specially drawable image, is loaded to memory during runtime? Or it is just like a file which is available when the application need it?
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Jan 11, 2010
I am trying to parse a page loaded in a webview. Following is the code
URL url = new URL(myURLToLoad); DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance(); DocumentBuilder builder = dbf.newDocumentBuilder(); Document dom = builder.parse(url.openStream ()); --------> * String value = dom.getElementById(myDivID).getNodeValue ();
The code runs till * and then quits...I am not sure what is wrong with this..Can anyone help...Or if you can suggest any alternate method it
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Nov 14, 2010
I have created multiple bitmaps - one for each folder (mdpi, hdpi, ldpi). Can someone show me some code or point me to the appropriate method that will allow me to detect which resource Android decided to load.
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Aug 4, 2010
For example if a WebView loaded "test.html?PageId=10", how would I get that PageId is equal to 10?
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Mar 30, 2010
I loaded music on my SD card but don't know how to access it, they don't show up in the music app.
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Feb 25, 2009
I've recently started working with the SoundPool class in SDK 1.1R1, and noticed that my app deadlocks from time to time, or sounds are not loaded. I remember reading, back in November, that this was to be addressed in the next SDK. I've used pretty much the same code that others have used and most of the time it works for a bit. Just a minute ago, the app completely crashed with no "Force Close" and returned to the home screen. Logcat reveals that "HeapWorker is wedged: 26577ms spent inside Landroid/media/SoundPool;.finalize()V" I'm not sure if this is the same issue others had with SoundPool or if I have encountered an entirely new beast.
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Sep 5, 2010
When I load an image frome the media gallery into a Bitmap, everything works fine, except that pictures that were shot with the camera while holding the phone vertically, are rotated so that I always get a horizontal picture even though it appears vertical in the gallery. how can I load it correctly?
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