I am trying to cache my viewgroup to a bitmap and blit this to screen instead of calling dispatchDraw on the group while scrolling for performance reasons. This works quite well on 1.5, but has ugly scaling artefacts on 1.6 and newer for high density screens. Because of my 1.5 compatibility I can't find a way to set the density of my cached bitmap.
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I recently enabled the app2sd functionality in my app.When i test the apk on my NexusOne (2.2) the app goes to the SD card, perfect! But when i publish the app on the market and install the same apk from the market on the same Nexus, the app2sd function is missing, I can't install it to my SD card.
View 5 Replies View RelatedIf I build against the 1.5_r3 SDK are there any compatibility issues with running it on devices that are at previous levels of 1.5? I would certainly hope not, but I've learned not to make such assumptions.
View 11 Replies View RelatedI want to avoid the SDK 1.0 and 1.1 workaround for playing synthesized audio as of SDK1.5, but for older phones or firmware (SDK 1.0 and 1.1 based) I want to maintain backward compatibility and first write audio to flash memory in order to play the resulting audio file from there.
View 8 Replies View RelatedI would like to know whether the Android provides any sort of compatibility i.e either forward or backward. It means as in Blackberry if develop an Application with JDE 4.2 then that application will work on any handset with OS 4.2 or higher which means it has forward compatibility. Is there anything similar in Android? Suppose I develop application with Android SDK 1.5 then will that application work on any handset having OS 1.5 or higher.
View 1 Replies View RelatedI'm having trouble getting my app to work properly on older devices. I've ready the "Backward Compatibility" tutorial, I'm working for performance - and it suggestions using .invoke is considerably slower than using a wrapper class. But it seems the wrapper class only works for if a class is not available on older devices. I'm compiling with 2.2, but minSDK is 1.5. I'm working with multitouch, I assumed that if I checked against Build.Version.SDK, and didn't call getPointerCount() - then it wouldn't raise an error. But when I create an instance of the class which has my methods in, I get this: 06-29 08:17:28.263: ERROR/dalvikvm(255): Could not find method android.view.MotionEvent.getPointerCount, referenced from method com.myPackage.myClass. Despite not actually calling it. Is this normal?
View 1 Replies View RelatedI've got a activity showing the user a list of songs to play, and when he opens a song I launch an activity which embed a player.
My problem is that when i finish playing i call "this.finish()", but when the user reopen the player, the "onCreate" is launched and it seems that the GUI is building itself "again".
I've tried to not call "this.finish()" and call the Activity.startActivity on the father, but with this way, when I clic on the "back" button on the emulator, I get all the players playing in the same time (they still exist).
So my question, is there a way to make an activity "a singleton" or to freeze it to be retrieved later (It can't be able to retrieve it with "back" button) or a way to cache all the constructions so to not have to do it again ?
My app makes several calls to getFromLocationName from the android.location.Geocoder; class, this is currently handled in my activity which also displays some data depedant on the results of that call.
This can be quite slow, for example before the activity can load it first has to complete the various calls, and that is reliant on a network connection.
Once I have the results, I don't really need to refresh that (I mean how often do locations and geo coordinates change?)
My question : How can I best avoid having to query for this data each time my app runs. Should I do something with a service that loads them all on startup? (could be quite slow if it has to query 50+ times). OR should I make the call, store results in SQL, then only query next time if I don't currently hold the results?
I am performing hundreds of calls to a single content provider to perform various insertions, updates and deletions. After profiling my application, I have noticed that the ContentResolver class takes approx. 30ms to retrieve the corresponding content provider object for each call. Is there anyway to retrieve a reference to the content provider rather then going through the ContentResolver every time?
View 4 Replies View RelatedI am retrieving a list of images and text from a web service.The images are getting displayed in the list view. But the problem is, when i scroll down the list the entire images are getting loaded once again. When i scroll twice or thrice there is a OutofMemory occuring.Can anyone tell me how to cache the images and also to avoid the loading of the images that are already loaded when i scroll down. I have tried to increase inSampleSize but it didnt work.
View 1 Replies View RelatedThat is the only thing I can think of. When I generate a random number (for the radius of a ball), after a while, the radius goes to one number and sticks that way. I've even tried setting the random number value to 0 before getting the random number, and java.util.Random must be at fault, it still gives the same random number. Here is an apk if you would like to try it yourself: http://74.118.194.50:84/Balls.apk
Here is a snippet of the code (I would rather not release the full source): <code> Random randomizer = new Random(System.currentTimeMillis()); int hw; hw = randomizer.nextInt(95-15+1)+15; </code>
I don't currently have a data plan. Since I'm on WiFi 95% of the time, I don't plan on getting one. The only thing I haven't been able to do easily (without a data plan) is use Google Maps while driving/walking.If I load the maps before leaving a WiFi hotspot, my location is tracked and I can pan around the map. Of course, as soon as I want to view another uncached portion of the map, I can't.Maps are small, and it would be perfect if I could cache maps for a certain area - say everything within 100 mi of my house. Any ideas?
View 49 Replies View RelatedI don't know why, but in Eclair, the default (non-fancy) gallery app changed its behavior from the Cupcake version, and it broke one of my commercial applications Firstly, when long-pressing a gallery and choosing "Diashow", it does not publish an Intent to be picked up by any application that implements the Intent filter anymore. Instead, it will directly call "com.android.gallery/com.android.camera.ViewImage" with extras. Question: is it still possible to intercept this intent and allow the user to choose my application to do the Diashow? Secondly, the intent extras for the VIEW intent are messed up (in my build of 2.1 anyway): Instead of providing the BucketId of the picture in the Intent's query parameter. But in 2.1, the BucketId is moved to the Intent's extras. Except; it is not passing the BUCKET_ID, but the unlocalized BUCKET_DISPLAY_NAME instead Question: how can I still get the unique BUCKET_ID from the intent, so that I do not have to work with a potentially non-unique BUCKET_DISPLAY_NAME.
View 2 Replies View RelatedI'm using a WebViewClient that overrides shouldOverrideUrlLoading so the browsing stays inside the WebView. I initially call loadDataWithBaseURL with some HTML I have in memory, which has links in it. When I click the links, they load correctly in the webView. Everything is good up till now, but when I press back, effectively calling webView.goBack(), the webView loads the failUrl I passed to loadDataWithBaseURL. Why does it work going forward, but not going backward?
View 1 Replies View RelatedI'm flabagasted that it has less features than 2.3.3!
For instance independent ring tone and notification volumes in 2.3.3 but not in 4.0.3
I'm trying to employ HttpResponseCache to cache each HTTP-request sent with HttpURLConnection.
why I get hit count always zero?
Code:
HttpResponseCache.getInstalled().getHitCount()
Usage:
Code:
for(int i = 0; i < 2; i++){
try {
HttpURLConnection connection = (HttpURLConnection) new URL("http://www.google.com").openConnection();
connection.setUseCaches(true);
if(i == 1){
try {
[code]....
On 2'nd run I have "NOT cached" in console and hit count == 0.
I really like the new Google Navigation, and it would be really handy for when I go abroad cycling, apart from the roaming charges. Any apps that can cashe the maps and store them, or must I always be connected?
View 6 Replies View RelatedThere are a few threads of various Vibrant/TouchWiz Calendar issues (Samsung Galaxy S). I am starting this thread to hopefully get a reply of all the various issues in one spot and maybe someone can get this list somewhere that will drive change. In my mind, a smart-phone's roots is a PDA + Phone. Yes, it is amazing that they can do much, much more now, which makes these phones that much better, but to me, the Calendar is part of their roots. These disappointments that I'm starting with were available in Android 1.5 which makes them all the more frustrating. I am bulleting these instead of numbering them because I'd rank them all at the top. Really, any issue that you are having out there, especially one that is a non-issue in stock Android, is pure neglect by Samsung.
- No ability to customize notifications in the TouchWiz Calendar. Anyone need a reminder ringtone that is different than your other notifications? You won't get one that stands out from the others in your Samsung Vibrant because you have no ability to change it.
-No ability to hyperlink in the TouchWiz Calendar. Let's say I am going to a wedding that is out of town. On my G1 I could enter phone numbers and address to the Hotel, Reception Hall, key contacts, and the like; so all I had to do was go to my trusty calendar and click on a hyperlink to get directions in my map or call people/places via the dialer, oh, and I'd know what time things started because it is a super useful feature in a calendar. Good luck doing this conveniently on the Vibrant's TouchWiz Calendar because it does not have this feature. Maybe the biggest disappointment.
-Repeating Events in the TouchWiz Calendar provokes issues when modifying . If I edit only a single event in a series of repeating events via my web-browser on my laptop, TouchWiz will duplicate the event, keeping the original event, but also creating the changed single event as a new separate event entirely.
I'm sure this is the tip of the iceberg because I've seen a number of posts. . . although I haven't seen any mention of the hyperlinking which I find an enormous help.opefully someone from T-Mobile or Samsung will review and implement asap. In the end, I may return my phone if I have no confidence in these being fixedI'd also love to hear solutions. I've tried all the market calendar apps I could. Gemini, Junte, they provide hyperlinking, but don't fix the duplicatation issue. All other calendar apps ultimately just click through to the native Touchwiz calendar.Given the specs on the current phones out there, these features should be included off the shelf. I've rooted my G1, but one shouldn't have to root to have basic features available to Android such as the above.
Opera Mobile 10.1 Beta Brings Turbo-Powered Browsing to Android.This is supposedly different than what's in the market.This forum is stale lately, so let's mix it up.I still like XScope, but Firefox is promising, and though I have NEVER been a fan of Opera, I am gonna try it.The one touch pinch zoom on Xscope is really tough to give up
View 14 Replies View RelatedIm currently developing a system where the user will end up having large arrays( using android). However the JVM memory is at risk of running out, so in order to prevent this I was thinking of creating a temporary database and store the data in there. However, one of the concerns that comes to me is the SDcard limited by read and write. Also another problem that comes to mind is the overhead of such an operation. Can anyone clear up my concerns, as well as also suggest a possibly good alternative to handling large arrays ( in the end these arrays will be uploaded to a website by writing a csv file and uploading it).
View 1 Replies View RelatedI am trying to set up a ViewFlipper that changes a SlidingDrawers content each time a button is pressed. So far every view I set up worked fine, but now I am trying to create a ListView (including single_choice_mode) within a child view of the ViewFlipper, but my attempt only let to a NullPointerException. As I only discovered ViewFlipper today, I am not yet familiar with it and may not have understood it completely. if someone could give me a hand and help me find out what I have done wrong, that would be great. Here is what I have done:
The code for the onClick event of the ImageButtons:
public void onClick(View v){
if (v == btnExposure){
mFlipper.setDisplayedChild(0); }
else if (v == btnProperties){
mFlipper.setDisplayedChild(1);}
else if (v == btnSpecialEffects){
mFlipper.setDisplayedChild(2);.............
<supports-screens android:anyDensity="false" android:largeScreens="false" android:normalScreens="true" android:smallScreens="false" android:resizeable="false"></supports- screens>
first of all what is the resizeable attribute? It does not seem to be documented. This is working almost 90% for my game except when testing in WVGA screen resolution, all my images are scaled incorrectly, it is longer vertically than horizontally. I was expecting the screen compatibility to maintain aspect ratios as that of HVGA.
Also in my layout I have a scrollview and it is designed in such a way that in HVGA when it is not scrolled down, the items are hidden away, however now in WVGA those things are shown. If the aspect ratio of HVGA is maintained I won't have this issue. How can I make sure the aspect ratio is maintained? Also in my layout I am positioning some items using pixel positions. Should I convert these to dpi? How do I calculate what dpi they should be?
What is the recommended approach to have currently shipping 1.5-SDK compliant apps to start offering 1.6 features (such as TTL) in the Market? Can we just publish 2 versions of the same package name each compiled with a different SDK level (will the Market automatically push out only the right version of the app) or do we have to use different package name and assume that the user will find a way to understand the version of the OS he has. A public statement to the developper community would be more than welcomed here!
View 5 Replies View RelatedI've found again my DevPhone1 (aka G1) on a shelf and though that this time I should really give it a try and create an app for it. But I've really lost touch with the Android world and now I don't know where to start really. There have been many SDK releases lately for many new and better devices. Which one of these can I use with G1? What is the most recent one which can be used on that hardware (although with reduced performance) but which will enable development for rather modern Android releases as well. The firmware update received today, while recharging the phone, is 1.6. Can I go higher with some R&D build?
View 3 Replies View Relatedi want to develop an application on android,webos,wince. how to develop application that should run on all paltform with developing each paltform
View 2 Replies View RelatedI can run my application on 1.5, 1.6 and 2.0 emulator and on a 1.5 device without any problems. But some of my users are reporting force close and strange menu entries (see the attachment) using 1.6 and higher version devices.
This screen should look like this:
http://www.taypo.com/blog/WindowsLiveWriter/TurkceKlavye0.7_6F1/settings_0.7_2.png
And the code that generates this screen is:
<?xml version="1.0" encoding="utf-8"?>
<PreferenceScreen xmlns:android="http://schemas.android.com/apk/res/android">
<PreferenceCategory android:title="@string/general_settings">
<CheckBoxPreference android:title="@string/haptic_feedback" android:defaultValue="true"android:summary="@string/haptic_feedback_summary" android:key="vibrate"/>
<CheckBoxPreference android:title="@string/sound_feedback" android:defaultValue="false" android:summary="@string/sound_feedback_summary" android:key="sound" />
<CheckBoxPreference android:title="@string/auto_caps" android:defaultValue="true"
android:summary="@string/auto_caps_summary" android:key="auto_caps" />
</PreferenceCategory>
<PreferenceCategory android:title="@string/layout_settings">
<ListPreference android:title="@string/keyboard_layout" android:defaultValue="TRQ" android:key="kbd_layout" android:entries="@array/layout_names" android:entryValues="@array/layout_values" />
</PreferenceCategory>
</PreferenceScreen>
I've got a question as I don't have an Android 2.0 device to test on and this particular aspect seems untestable in the emulator. I've got a service that needs to be run as a foreground service. I have a notification that stops it etc, so I have no problem using startForeground instead of setForeground. However, I'd like to have 1 version of my app that works across all platforms... Is this possible? If my app is compiled with Android 1.5 and uses setForeground, then will that command actually work on an Android 2.0 device, or does it not matter which sdk was used to compile? I've tried compiling with 2.0, and surrounding the call to startForeground with a try/catch, but that throws a VerifyError when the service is started, when run on a 1.5/6 device since startForeground doesn't exist there. Can I catch and ignore the VerifyError somehow and make it work that way?
View 5 Replies View RelatedI have an app that uses People provider. This is deprecated in version 2.0. I have built my application against API1.6 and set <uses-sdk android:minSdkVersion="4" android:targetSdkVersion="4" /> Everything was fine until I wanted to run the app on Android 2.0. Not only is People deprecated it actually doesn't even work! So, I have changed the API I'm compiling against API2.0 and do the OS version check in my code and use People provider or ContactsContract accordingly. I still keep <uses-sdk android:minSdkVersion="4" android:targetSdkVersion="4" /> so I can target 1.6 devices. Now when I want to debug in Eclipse it insists on running it on 2.0 emulator. How can I tell Eclipse that I really want to debug on 1.6 emulator? I have installed my APK on 1.6 emulator via the browser. It installed fine, but when I want to use People provider it crashes. I need to be able to debug it.
View 3 Replies View RelatedIs there any TCK (Technology Compatibility Kit) on Android such like Sun TCK? How can I assure my android platform after changing it as own style. Can some one help me clarify this point?
View 2 Replies View RelatedI program and test using the Droid Incredible. The other day my friend downloaded my alpha version, which works flawlessly on the Incredible, but crashed on his Moto Droid. I just updated my app to use 2.1 api's instead of 1.6; maybe this will make a difference? I upped my min version requirements to 7. My question is how can you make sure your app works on all phones and not just the phone your are building and testing on? Is there a way to emulate a particular device?
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