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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Jun 7, 2010
I need to change the emulator's default time zone. It worked in command line with -timezone option. But when I tried it in eclipse android's launch options. it didn't work. I set it in Window->preferences->android->launch->default emulator options. Am I setting it in a wrong place?
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Jun 18, 2010
I have looked everywhere for the answer to this question, but cannot find anything on it.
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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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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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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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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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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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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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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.
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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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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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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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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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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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Mar 29, 2009
After successfully installing and regularly using the Gmote app, wondered if there was one for controlling the Xbox 360 and/or Nintendo Wii? - predominantly interested in one to control the Xbox.
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May 29, 2010
I've been messing around with controlling my computer with my Droid remotely, using Wake On Lan to turn it on over the internet and Torrent-Fu/AndroidVNC to interact with it. The only thing I can't seem to figure out, however, is remote shutdown. Can anyone recommend me an app that will do this? I thought AndroidVNC would have a menu option for it or something, but no such luck.
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Jun 20, 2010
I am the happy owner of a HTC Legend and a pretty old laptop with Ubuntu Linux installed. Is there any app that lets me control volume etc. on my computer via wifi?
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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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May 26, 2009
I'm trying to make a list that contains elements not necessarily occupying the entire width of the screen, but even if using android:layout_width="wrap_content" on my elements, they always behave as if their width value were set to "fill_parent" instead. If I set a fixed value for the width, e.g. "100px", that value is indeed used, but I just can't get wrap_content to work.
Example simple list item:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/ android"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:background="#707"> <TextView android:id="@+id/text1"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:layout_alignParentTop="true" android:layout_alignParentRight="true"
android:background="#770" android:text="Text1" /> <TextView android:id="@+id/text2"
android:layout_width="wrap_content" android:layout_height="wrap_content"
android:layout_alignParentLeft="true" android:layout_below="@id/ text1"
android:background="#077" android:text="Text2" /> </RelativeLayout>
What am I missing here? How do I accomplish a list item with wrap_content behaviour, i.e., where the width of each RelativeLayout is adapted to the length of the strings in the contained text views?
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Nov 13, 2010
I bumped into a guy I know the other day and happened to notice he had a HTC desire. We had a brief chat about it and he showed me some of his apps. He had an app that can control torrent downloads on your PC. I forget what it was called. This would be a usefull app.
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Aug 15, 2010
Can anyone recommend an app I can use to control my Music via my mic enabled headphones, similar to what the iphone offers. I found an app called droid shuffle, which sounded perfect but I can't get it to work on my Captivate. Basically I want to be able to press the mic button twice to advance to the next track. This and DRM are the only reasons I wish my droid was more iphoneish.
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Nov 6, 2010
I am working on an application where i will track the movement of the android device inside a building... suppose i display a map of the building in the android emulator... Now,i need to simulate the movement of the android device.... is there a way in which i can control the movement of the android device and see the real time movement of the device in the map ... like a dot moving in the map .... Is this possible to do using the android emulator? when i googled this requirement, i came across SensorSimulator...But,this software shows the acceleration,magnetic field and temperature values... It doesnt display the co-ordinate values....
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Jun 24, 2010
I currently use Timeriffic, which has been great at managing settings for different times of the day. What I am looking for, however, is an application similar to that where I can define the sound behavior for one specific application.
What I am trying to do is make it so all notifications are at 10% volume during the night, but Id like to make notifications from Google Talk louder, like at 50%. I haven't been able to find anything that would allow a rule like that, but thought Id ask since you guys seem to know everything!
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May 23, 2009
I want to create an application that is similar to a phone call, where it produces sounds through the speaker and receives sounds through the mic. i want to know if i can have an access to control the speaker and the mic to produce and receive sounds simultaneously (like a regular phone call) in my application. i also want to know if it is possible to specify the range of frequencies of the produced and received sounds.
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Dec 11, 2009
I realize this might not be the proper place to post this since it's not Android specific, but rather its about integrating with a google app.
I've been trying to find some documentation on launching / controlling the Google Navigation app via Intents or otherwise. I was hoping to find an intent to launch the navigation app with address parameters setup and start navigation immediately.
Can't find anything out there, so I'm still not even sure if it can be done.
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Jun 12, 2013
I buy a tronsmart t 428. For this android pc i must use a physical mouse and keyboard, not usefull for a tv stick....
Is It possible to creat an app who give the control by remote via hdmi cec....?
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May 3, 2010
I have gmail and my regular pop email set up on my Incredible. Well, almost set up. They seem to "grab" new mail automatically, instead of just when I want them to. I cannot seem to find settings for either app that allows me to control when and if new email is downloaded to the phone.
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Dec 31, 2011
My Android cell phone overrides my selection of vibrate mode and notification ringing volume (becomes the permanent settings) when pressing the side volume button. I was told by customer service ALL Android phones do this due to the Android operating system. First of all it true? Is there a way to force an Android smart phone to keep the receiving call volume at its intended volume setting and keep the "NEVER" vibrate selection from switching even when pressing the volume button (just want the volume button to control the audio level during a call)? In order to use cell phones for receiving emergency calls one should be able to force a phone to keep its intended receive call notification settings and not allow them to be accidently be changed by pressing an external button.
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Feb 12, 2012
The vibration notifier for email is so short that I often don't notice it.
Is there an app that allows me to control the length of the email vibration notification?
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