Android :: Add Compiler Flags To Standard Build.xml

May 17, 2010

I want to add -Xlint:deprecated to the java compiler while building android app.I've seen the compilerarg tag inside javac tags, but the generated build.xml for the standard project doesn't have such a tag.

Android :: Add compiler flags to standard build.xml


Android :: Dalvik JIT Compiler On Linux X86 Or Mac Build

Jul 1, 2010

As I've heard from Google IO 2010 session, Dalvik JIT compiler just support ARM processor.Do this mean my own build of Android source on Linux X86 or Mac OS X can not support JIT compiler?Should I use some target board with ARM processor to test Dalvik JIT compiler?

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Android :: HTC Build Standard And Quality Assurance

Jul 14, 2010

I am planning on importing HTC's next phone to come to Europe (HTC Ace?) and I am a little worried about HTC's build quality on a lot of their phones. The nexus one has this issue where dust gets under the screen, the EVO has a problem with light leaking out the bottom, and I've read about the Incredible feels very plasticy. I've seen many threads where people complain about HTC's quality assurance too and this makes me a little nervous because if I am planning on shipping from abroad, I don't want to have to return it if something goes wrong and be forced to wait weeks to months for a replacement. What do u think of HTC's build quality on their phones? Is it that much worse than Moto and Apple's?

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Android :: Which Intent Flags When Setting Pending Intents?

Apr 30, 2010

I have one WidgetProvider but expect the user to have multiple instances of the widget on the home screen. When the user clicks on the widget, an intent is fired to start an activity A passing a String extra (which is specific to that instance of the app widget). Everything works fine unless the activity is already running, in which case the activity is shown in its previous state (and so the intent extra data is ignored). I've tried using various Intent flags (like FLAG_ACTIVITY_NEW_TASK) but they don't seem to help.

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Android :: What Intent Flags Are Recommended For Activities Started By Notifications

Nov 8, 2010

I am running into a peculiar issue with an app which has multiple Activities.I have a screen manager class that is bound to a service.The service polls a server for data.The screen manager starts Activity A, B, or C, based on the data.It will also allow the user to select to display the other Activities or it may swap out an Activity automatically based on new data from the service.Currently all the navigation works great and if the user presses Home, the applicable Activity comes back to the foreground when the user presses the apps icon from the Android home screen or the recently run apps list.I then had to implement a new feature to display an icon and notification.I first implemented this by only displaying the notification when the Activities were no longer visible by setting it in each Activities on Pause.Worked like a charm and gave the user a third option to redisplay the app after Home button press.However if the data from the server (when the app is not displayed) causes the screen manager to update the Activity to be displayed I have issues. I think my Activity stack is getting screwed up.I have since tried a little different model where the screen Manager handles the notifications and always displays the notification, updating it with a new Intent whenever an Activity is updated, but its still not cutting it.

When the app is minimized and the data changes I can see the screen manager call the startActivityForResult on the new Activity and it seems like Android knows we are minimized and does not display the Activity. I can then also the screen Manager call to finish on the old top Activity.Each Activity currently has the flag set to singleTop in the manifest and FLAG_ACTIVITY_SINGLE_TOP in the code. When the data hasn't changed on the server, I pull the app back up using any of the above I get what I expect and the Activity's onNewIntent is called. However when the data has changed and the user calls up the app via the notification it calls the Activities onCreate. The Activity does come up and runs, but then pressing back takes me to what seems like another instance of the same Activity instead of exiting. I just took a closer look at my logcat and I see 2 calls to the Activity's onResume, but then no doubles after that.

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Sprint HTC Hero : Does USB Standard Have A Standard Power Output?

Oct 26, 2009

so i made a wonderful discovery this weekend that my phone will take a charge from my CD deck in my car that has a USB jack. my concern is, that it may end up damaging the phone somehow and i was beyond paranoid. does anyone know if it is a safe thing to do? Does the USB standard have a standard power output?

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Android :: JIT Compiler Explanation

May 3, 2010

Is anyone able to explain to me exactly what the upcoming JIT compiler will provide? For example, I have Java programs that generate bytecode at runtime which I would like to port to android. Will the JIT compiler make this possible by converting the runtime generated Java byte code to Dalvik at runtime as required?

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Android :: Does Compiler Detect Dead Code?

Feb 8, 2009

For example, will this result in any performance gain:
-- public static final boolean DEV_MODE = false;
if(DEV_MODE){ // log stuff, compute debug values etc. }

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Android :: How A JIT Compiler Helps Performance Of Applications?

May 13, 2010

I just read that Android has a 450% performance improvement because it added a JIT compiler, I know what JIT is, but I don't really understand why is it faster than normal compiled code? or what's the difference with the older approach from the Android platform (the Java like run compiled bytecode).

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Android :: How To Explicitly Invoke AIDL Compiler?

Jul 26, 2010

I'm using Eclipse with ADT to develop my project, but for some reason my AIDL files are not getting compiled into Java files. Is there a way to explicitly invoked the conversion of my AIDL files?

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Android :: Controlling Compiler Options In Eclipse

Oct 7, 2009

Is there a way to control the optimization level of the java compiler that Eclipse uses when building a project?Or is this question not relevant anymore, is all optimization deferred to the vm? The results of this tests imples test_f() is not being inlined, even though it really is a prime candidate for it. It should also be possible to do this inlining at compile time.I investigated this further, and it turns out Dalvik doesn't do inlining at this date.

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Android :: Objective-C To Java Cross Compiler

May 7, 2010

It is clear that cross compilers will not be allowed by the Apple App Store, so a developer will need to be familiar with Objective-C to create applications for the iPhone.I was wondering, is there a cross compiler that will take Objective-C application code and rebuild it into a similar Java application that can be packaged for Android? That way, a developer could still learn just one language (obj-c) but put out applications on many devices.I understand that the Java port would be less optimal than a natively coded application, but could conceivably save a developer some time.

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Android :: Code Works In One Project But Won't Compiler

Oct 14, 2010

The following code was copied from one project to another. No errors in project one.

In project 2 I get:
-The method onClick(View) of type new View.OnClickListener((){} must override a superclass method
-implements androd.view.View.OnClickListener.onClick

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Android :: Build Error Build/core/java.mk:20 On 2.2

Jun 24, 2010

I downloaded the Android 2.2 source code and try to build it. When I executed the make command, I got an error here like this build/core/java.mk:20: *** frameworks/ex/common: Invalid LOCAL_SDK_VERSION '8' Choices are: current 4 5 6 7. Stop. Then I changed the frameworks/ex/common/Android.mk to LOCAL_SDK_VERSION = 8 from LOCAL_SDK_VERSION = 7. Next place, build/core/java.mk:20: *** external/jsr305: Invalid LOCAL_SDK_VERSION '8' Choices are: current 4 5 6 7. Stop. I changed the external/jsr305/Android.mk to LOCAL_SDK_VERSION = 8 from LOCAL_SDK_VERSION = 7

Last one, build/core/java.mk:20: *** external/guava: Invalid LOCAL_SDK_VERSION '8' Choices are: current 4 5 6 7. Stop. I changed the external/guava/Android.mk to LOCAL_SDK_VERSION = 8 from LOCAL_SDK_VERSION = 7
By these changes the code started the compilation.

1. Why the error occured?
2. Changes which I did is correct or not?

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Android :: Internal Compiler Error When Compiling Native Code

Aug 9, 2010

Currently I am trying to compile native code for Android. The code is from the OpenCV port for Android. I pasted all the code correctly in my project and edited my make files accordingly. When I set android:debuggable to false everything works fine and I get my native library. When I try while android:debuggable is set to true I get an error.

Here is a part of the log:

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

From what I have found on the internet this is caused by the optimization level of the compilation. As long as the code isn't compiled so that is is debuggable afterwards everything should be fine.

Now apparently it is possible to avoid this by setting APP-OPTIM := release in the Application.mk or adding -O2 to LOCAL_CFLAGS. I have tried both and still I get this error.

Right now I don't really care that much about debugging my native code, but I would like to have basic debugging enabled. And I don't want to keep switching android:debuggable in my manifest every time I want to compile. I'm not even sure if it is okay at all if I just set android:debuggable to false pre compiling and to true post compiling, but I am sure I will forget it every second run.

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Android :: Buildsystem On Ubuntu 10.04 X86-64 Occrur Internal Compiler Error

Jul 22, 2010

I'm trying to build android system ; enviroment: ubuntu 10.04, gcc-4.4 jdk 1.6-0-20
get source code follows http://source.android.com/source/download.html

$ . build/envsetup.sh

$ choosecombo

$ make

then compiler error occurs:

CODE:........

In line 554: the code below:

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

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Android : App Crashes - Can't Find A Java Method Despite - No Compiler Error

Aug 20, 2010

My Android app runs fine, but: If I insert a call to WebView.setScrollbarFadingEnabled, it crashes saying:

Could not find method android.webkit.WebView.setScrollbarFadingEnabled, referenced from [my class]
VFY: unable to resolve virtual method 289: Landroid/webkit/WebView;.setScrollbarFadingEnabled (Z)V


I am using Android 1.5, not a custom ROM. My app defines minSdkVersion="3" I always clean before compiling.

Is setScrollbarFadingEnabled unavailable in Android 1.5? If so, why don't I receive a compiler error?

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Android : Extending Parcelables - Got Syntax Error From Aidl Compiler

Jul 15, 2009

I've run into the following issue:

Say I have an Animal class, which is parcelable, and I have a Dog class and a Cat class, which are subclasses of Animal and also implement Parcelable.

Say I have a service with the following AIDL interface:

sendAnimals(List<Animal> animals);

Now I'm calling this remote interface from some client application, passing it a List containing Cats and Dogs. What happens now is that android calls the Cat's and the Dog's writeToParcel() methods at the client side, but at the server side, the Animal's CREATOR is used, which calls Animal's readFromParcel() method. So the right data is sent from the client, but the wrong unmarshalling code is executed at the server.

I have tried to put this in the AIDL file:

sendAnimals(List<T extends Animal> animals);

This results in a syntax error from the aidl compiler though.

My current workaround is as follows: - In each specific Animal subtype's writeToParcel() method, I write the class name as a String into the Parcel as the first element. - In the Animal's CREATOR.createFromParcel() I read the first String out of the parcel, and based on that I create the appropriate type and call the appropriate readFromParcel() method.

I think this is kind of ugly though. I would expect the android framework to take care of this for me.

(My application is not actually dealing with animals, this is just to make it simpler to explain the issue)

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Android :: How To Add Flags To A Notification Status Bar Notification?

Oct 19, 2010

im following the tutorial from developers guide but i have a problem tutorial says: "To clear the status bar notification when the user selects it from the Notifications window, add the "FLAG_AUTO_CANCEL" flag to your Notification object" buT how i can add the flag to my notification?notification doesn't have any kind of function to add flags then? how i can do it?

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Motorola Droid :: New JIT Compiler For 2.2 Be Faster Than Overclocking?

May 20, 2010

Let's discuss board. Will the new JIT Compiler for 2.2 (FroYo) be faster than overclocking? And when we have 2.2 can we over clock?

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General :: Build Kernel MT6577 - Can't Boot After Build

Feb 21, 2013

I have a phone with a MT6577. The vendor (Wiko) published the kernel source code. So, i'm trying to build it. I can get the zImage. I converted it to boot.img but i can't boot with it on my phone.build a good zImage? (if you want to try) : URL...

cp mediatek-configs .config
TARGET_PRODUCT=s9081 MTK_ROOT_CUSTOM=../mediatek/custom make
# sudo mtk-tools/repack-MT65xx.pl -boot zImage boot.img-ramdisk boot.img
MTK-Tools by Bruno MartinsMT65xx repack script (last update: 27-01-2013)
Repacking boot image...
Ramdisk size: 2046 blocs
Repacked boot image into 'boot.img'.

Here are the Warnings I got when compiling

mediatek/platform/mt6577/kernel/drivers/video/tvc_drv.c:61:5: warning: "FIXED_WVGA_PARAMS" is not defined
net/ipv4/tcp.c: In function 'tcp_nuke_addr':
include/net/ipv6.h:338: warning: 'in6' may be used uninitialized in this function
net/ipv4/tcp.c:3367: note: 'in6' was declared here
In file included from net/ipv4/netfilter/ipt_LOG.c:27:
include/net/netfilter/xt_log.h: In function 'sb_close':
[code]....

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Android :: How To Get A Standard EULA?

Feb 16, 2009

I've read a couple of posts about handling Eula's and was wondering: Is there a standard EULA for apps on the Android Marketplace? If not, can there be and should there be? (If I understand correctly) all apps for the i Phone are subject to a standard agreement (the iTunes EULA) found at (http://www.apple.com/ legal/i tunes/app store/dev/stdeula/). Crucially, this allows the buyer to know what they are agreeing to BEFORE purchasing the app. It seems that with the Android model, everyone is responsible for their own license and the buyer doesn't know what they're agreeing to until after paying. This would seem to be a shrink-wrap license which is questionable, at least in US courts. (http://en.wikipedia.org/wiki/ EULA) Certainly some cases may merit a non-standard EULA, but it seems like it would do developers a huge favor to offer a standard license for the 99% of apps/games that don't need anything special. At the same time, it would eliminate a confusing situation for consumers who don't know what they are agreeing to anyway.

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Android :: Want App To Non Standard Wallpapers

May 10, 2010

Is there an app that lets you use non standard aspect ratio wallpapers? I have some wider pics that I'd like to use with out cropping them. I'd also like to be able to have the option to use different back grounds for different screens. Anything out there that can do this?

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Android :: Why Not Standard Emulators?

Jan 13, 2010

I'm new to Android, but have published iphone and bberry apps.I see that I have to create an emulator using the SDK, before I can write and test an app. Why are there no default emulators? Why not at least a Nexus one, or HTC hero emulator shipped with the product? Sure its supposed to be flexible, but why not make it easy to create hello world and play around with a virtual Android phone? Both blackberry and iphone come with default simulators when you download the sdk.

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Android :: Standard SMS Image

Mar 11, 2010

I'm trying to find the standard Android image used in Android 1.6 for an SMS action. The one that can be seen under contact details that looks like a postcard.I noticed that there was a standard image "sys_action_sms" which looked like a chat bubble in Android 1.0, but apparently that was removed at some point.

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Android :: How Do I Make My App Look Like Standard App?

Oct 29, 2010

I notice that most android apps have some sort of standard in that they all look similar. Most of them have some sort of list of Text that are click-able. It's somewhat hard to explain but they look really nice and I was wondering is there some sort of tool or api that allows me to change the look of an app to make it similar? Or do I have to specifically specify the different fonts and different graphics?

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Android :: How To Get Standard Phone Profiles?

Jun 22, 2010

I have just got the new Samsung Galaxy S phone, which after using Nokia N97 is a brilliant phone. My main issue is that it doesn't have standard phone profiles yet the function manual I downloaded from the Samsung site clearly says it does? Any ideas? Not a major issue but I guess I just got used to having profiles. Secondly, is there a way to sort the photos in the gallery into different folders? For example in months or tags?

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Android :: Implications Of Using Non Standard Packages

Mar 23, 2009

What are the implications for future Android device releases if we are using non-standard packages such as "com.google.android.maps"?

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Android :: Catch Standard Exceptions

Aug 21, 2009

I want to listen the android standard exceptions to manage it. But I don't put try/cath in all my code. Anyone knows if i can redirect the error output to my code. I've seen this System.setErr method, but It doens't works for this purpouse.

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Android :: Standard Help Document / Manual?

Mar 22, 2010

I am writing and publishing my apps on android and would like to provide help document (manual) to users of my apps. I've seen apps open up external web pages as their help, or use html view to open local html documents. Are these the ways we are supposed to deliver manual to our users?

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