Android :: Starting - Java Or Python - SL4A
Jul 27, 2010
I just ordered an Android smartphone and want to start playing around with creating my own applications. Now the question is which language to use, the native Java or Python using SL4A (former ASE).
I tend to Python, as I know it much better than Java, but I'm wondering what I would be missing using a "second class" language on Android. On the SL4A website it is also stated to be alpha quality software, which is not exactly encouraging.
I'm also not quite sure what the limitations of the scripting environment are and if they would be problematic.
View 3 Replies
Jun 1, 2013
What I am trying to do is get either nest-api in PHP or pynest in python to run out of SL4A in order to control my Nest thermostat ultimately out of Tasker. Both are found on github, but I can't link to them as I apparently need ten posts to do so. So a google search for "nest-api github" and "pynest github" will have to do I suppose.
I have absolutely no issues getting either to run out of Terminal on my MacBook Air, but for whatever reading the SL4A shell seems to escape my understanding. I would rather have the PHP script work, as it has more options for things I can set, which I like. Where to put the nest.class.php on my phone in order for the PHP shell to reference it when running the example.php or any script I write myself. When I put both files in the sdcard/sl4a/scripts folder and try to run either from within either sl4a or sl4a's shell I get a call to undefined function error.
For the python script, I'm not sure how I need to import the module so that I can call it with nest.py at the beginning of my command line prompt and follow it up with the user name and password and so on. I've done everything including trying to create an .egg file, which I've since been told is not necessary, and that I simply have to put it in the /sl4a/scripts folder. That doesn't make sense to me though, as I needed to run the setup.py command on my computer in order to start using it, and the .egg file should be the equivalent of that on the phone, no?
So what I am looking for is the foolproof way to get either a php or python script running through the shell that isn't actually hooking into the Android environment at all, which is what all the writeups I have found in my searching seems to pertain to. Then eventually make sure that they are available in a way that Tasker can call them. I should also note that all this has been done in an emulator through eclipse until this point, as I didn't want to go screwing around with my brand new Nexus 4's file structure until I had the best practice perfected.
View 2 Replies
View Related
Aug 18, 2009
Is it possible to evaluate a string of python code (or Perl) from Java when developing Android applications?
I am try to do something like evaluating a text-input script:
e.g.
CODE:...........
View 2 Replies
View Related
Apr 10, 2010
I am developing a simple app which does a little bit of image-processing. It's divided in two activities; the main one with some display elements and the second one which is used to capture images off the phone's camera.
To discribe my problem: I start the app, capture an image (by starting a new Intent with the subactivity) and all data is displayed correctly. If I capture another image after this, I run in an java.lang.OutOfMemoryError - bitmap size exceeds VM budget
I dont store the captured bitmap, in the second activity I just extract some data from it and pass it to the main-activity; finishing (finish()) the sub-activity afterwards.
View 1 Replies
View Related
Mar 12, 2010
Basically i want to start Notepad application in android from my application , can i do this in android using runtime.exec() method of RuntimeClasss and assign it to a process and kill the process later.
View 8 Replies
View Related
Jan 20, 2010
I have one simple question regarding Java TimerTask. How do I pause/resume two TimerTask tasks based on a certain condition? For example I have two timers that run between each other. When a certain condition has been met inside the task of first timer, the first timer stops and starts the second timer, and the same thing happens when a certain condition has been met inside the task of second timer.how do I pause timer1 while running timer2 and vice versa while timer2 is running? Performance and timing is my main concern as this needs to be implemented inside another running thread. By the way I am trying to implement these concurrent timers on Android.
View 4 Replies
View Related
Jul 14, 2009
I have had to program some applications that require large amounts of timed tasks to occur. However, I'm afraid to create so many timers because I haven't been able to figure out how they are handled by Java. Is there a problem with starting large quantities of scheduled tasks? If so, what is the better alternative?
View 2 Replies
View Related
Jul 19, 2010
I read an article from the web on SL4A (which is also known as Android Scripting Environment). The site from where i got an article is: http://infoworld.com/d/developer-world/php-development-comes-google-android-652. But i got the theoretical knowledge only for SL4A (ASE). Anybody having practical idea or practical example, pleas suggest to me. Which are the scripting language supported by ASE? How do i download script?
View 3 Replies
View Related
Jun 19, 2012
How to close html which is opened using webView show in python sl4a?
View 1 Replies
View Related
Nov 8, 2009
Hey I've been playing with my droid and I was wonder whether there are any scripting apps. Something like python on the phone? Is it possible? Is there anything like that?
View 4 Replies
View Related
Nov 15, 2010
I have installed python environment using python_for_android_r1.apk file. While installing, it installed some other 'extra packages' also so almost 8 - 10 MB files are instralled looks like. I got an icon in my applications, as "Python for Android". But now when I try to execute this by clicking on this icon, it gives a blank screen with a button with a text "Uninstall" . Not sure what else I need to do to get this work.
View 4 Replies
View Related
Jun 16, 2010
As the title ,I'm an absolutely newbie ,and I don't know how to get my milestone install some valuable linux software , for example ,MySQL ,Apache ,and so on. And ,there's any tool that I can use to operate remotely by linux command line on my lap top through usb or WIFI ? Or can I get some app running on mobile side can using linux commands?
View 6 Replies
View Related
Mar 11, 2010
I am porting a Python application to Android and, at some point, this application has to communicate with a Web Service, sending it compressed data. In order to do that it uses the next method:
def stuff(self, data): "Convert into UTF-8 and compress."
return zlib.compress(simplejson.dumps(data))
I am using the next method to try to emulate this behavior in Android:
private String compressString(String stringToCompress) { Log.i(TAG, "Compressing String " + stringToCompress);
byte[] input = stringToCompress.getBytes();
// Create the compressor with highest level of compression Deflater compressor = new Deflater();
//compressor.setLevel(Deflater.BEST_COMPRESSION);
// Give the compressor the data to compress compressor.setInput(input); compressor.finish();
// Create an expandable byte array to hold the compressed data.
// You cannot use an array that's the same size as the orginal because
// there is no guarantee that the compressed data will be smaller than
// the uncompressed data.
ByteArrayOutputStream bos = new ByteArrayOutputStream(input.length);
// Compress the data byte[] buf = new byte[1024];
while (!compressor.finished()) { int count = compressor.deflate(buf);
bos.write(buf, 0, count); } try { bos.close();
} catch (IOException e) { } // Get the compressed data byte[] compressedData = bos.toByteArray();
Log.i(TAG, "Finished to compress string " + stringToCompress);
return new String(compressedData);
}
But the HTTP response from the server is not correct and I guess it is because the result of the compression in Java is not the same as the one in Python. I ran a little test compressing "a" both with zlib.compress and deflate.
Python, zlib.compress() -> x%9CSJT%02%00%01M%00%A6
Android, Deflater.deflate -> H%EF%BF%BDK%04%00%00b%00b
How should I compress the data in Android to obtain the same value of zlib.compress() in Python?
View 2 Replies
View Related
Feb 10, 2010
I learned that the Android Scripting Environment (ASE) supports python code. Can I take my existing python programs and run them on android? Apart from the GUI, what else will I need to adapt? How can I find the list of supported python libraries for ASE?
View 1 Replies
View Related
Apr 29, 2010
I want to install a python package from source on android. Is this possible? I tried in the console to run the py install files, but disturbing (.core, ccompiler) isn't being found. Is it possible to still install them?
View 2 Replies
View Related
Aug 25, 2009
This link says that Android support Python, Lua and BeanShell Scripts, subsequently for Perl too. If it is so, is it possible for developers to write python scripts and call them in their standard Java based android applications?
View 2 Replies
View Related
Jan 16, 2010
Here's my Python script written using android-scripting:
CODE:............
while True:
CODE:.............
It basically vibrates every minute (like a motivator). However, when the phone is locked with screen blanked out, I don't sense any vibration. Perhaps Android is freezing the script (and hence the while loop)? Note that I am indeed running this script as a service (long-tap and click 'Start as service').
Is there a way to make this script work all the time regardless of the phone suspend state?
Update 1: I do hear the vibration occasionally, not every minute .. but rather like every 5-10 minutes randomly.
Update 2: This problems occurs if I run the script normally (not as a service). Seems like "time.sleep" is not sleeping for the specified time.
View 4 Replies
View Related
May 11, 2014
I've got a moto g and its my first android and its rooted and bootrom is unlocked, and ive installed terminal emulator, but I cant find out how to install python so that it works in terminal eit su, cd , ls ... commands?!?
I've installed qpython app from playstore but you cant do commands like su, cd ..... I've tried ping in terminal emulator and it works so you can enter internet over terminal emulator, so i tried apt-get install python but it says no apt-get command founder something like this, so how to install python on android with working commands( su ...) so that it can enter filesystem directories like /sdcard....
View 2 Replies
View Related
Mar 27, 2010
I'm trying to modify the Android device driver for calibre (an e-book management program) so that it identifies devices by only vendor id and product id, and excludes BCD.
The driver is a fairly simply python plugin, and is currently set up to use all three numbers, but apparently, when Android devices use custom Android builds (ie CyanogenMod for the Nexus One), it changes the BCD so calibre stops recognizing it.
The current code looks like this, with a simple list of vendor id's, that then have allowed product id's and BCD's with them:
CODE:..........
The line I'm specifically trying to change is:
CODE:............
Which is, the line for identifying a Nexus One. My N1, running CyanogenMod 5.0.5, has the BCD 0x226, and rather than just adding it to the list, I'd prefer to eliminate the BCD from the recognition process, so that any device with vendor id 0x18d1 and product id 0x4e11 or 0x4e12 would be recognized. The custom Android rom doesn't change enough for the specifics to matter.
The syntax seems to require the BCD in brackets.
How can I edit this so that it matches anything in that field?
View 1 Replies
View Related
Nov 19, 2012
How can i get device information from nonrooted device with python script? As I understand python don't have API like os.android.build in Java.
I need to get system information from device, such as cpu frequencies, gpu vendor and other (like in Antutu and another benchmarks).
I know how to write python script with $getprop information from shell, and from buil.prop file in the system files, but it isn't enough. I also know how to get these information with shell command and busybox installed, but I shouldn't root them.
View 1 Replies
View Related
May 19, 2010
i have two files
App.java
Gallery.java
App. java contains frontend buttons and functionalities Gallery.java lists the imagesin the sd card. i want to call Gallery.java in click event in app.java
App.java
package gallery.display;
import android.app.Activity;
import android.os.Bundle;
import android.view.View.OnClickListener;
import android.view.View;...........
View 1 Replies
View Related
Mar 16, 2009
I'm trying to call a java method from javascript using addJavascriptInterface(); but seems does not work, it always display "failure"; java code...
View 2 Replies
View Related
Nov 15, 2010
Hello Everybody. For an application prototype I'm creating a simple user login. The Password of the user will then be hashed using sha224 and transferred to the back-end. The Problem I am facing right now is the following. The password that was stored in the DB (also hashed using sha224) seems to look a little different then the hash I am sending.
I use the following code to create the hashes.
CODE:..................
What now will be produced looks like this and I will post the two hashes directly underneath each other. (The first one is python and the second android)
CODE:.............
They are almost the same but the python hash has two 0s more. Do you guys have any idea why?
View 3 Replies
View Related
Aug 8, 2009
Java packages like Java.io, Java.Lang etc used in android, are they different from Java packages in windows ? means specially made for android ?
View 2 Replies
View Related
Feb 11, 2009
I'm having some problems porting a Java application to work in Android platform. I detected an incompatibility problem between java sun and Adroid sdk in java.lang.Class. I oberved that: public Field[] getFields() Returns an array containing Field objects describing all fields which are defined. That's array is sorted as attributes are declared in the main Class in sun jdk. For example, next Class is defined as: public class Example { public boolean stop; public int atr1; public String name; ....
}
View 5 Replies
View Related
Aug 16, 2010
I do an import of the full package name / java file, and if I do a <classname>.<method>, SOMETIMES I can get it to access - other times I get a lot of can't use a static in a non static bunch of talk. I'll admit I'm new to Java, so what do I need to do? Call a class instance first, then call my methods? I'm rather confused by this, as I want to put all of my 'functions' into a FunctionsList.java file, and all of my main Activity (UI) into a MyActivity.java file.
For example:
<MyActivity.java>
import com.example.FunctionsList;
private class MyActivity extends Activity {
FunctionsList.function();
}
9/10 times I get that static/non-static error. If I put all of my functions into MyActivity.java, I have zero problems!
View 2 Replies
View Related
Nov 3, 2010
i hav two classes...both classes are extends activity.. i need call other class method on main class on android development..its urgent..please.. i done something like subclass sub = new subclass()...its not work..
package org.me.intent_testing;
import android.app.Activity;
import android.os.Bundle;
import android.widget.;
import android.view.;
import android.content.Intent;...........
View 2 Replies
View Related
Feb 5, 2014
I am trying to install the ADT Plugin. It is not working.
Tried:
This is after Hello->Install New Software
Name: ADT Plugin
Location: https:[code]....
How do I install ADT Plugin?I am using Java 6 instead of Java 7 per recommendation of posts elsewhere. It didn't work.
View 1 Replies
View Related
Mar 30, 2010
I am writing a application which will write to a file. Now I want to show the contents of the file but How do I delay the show function so that there is enough time for the writing to be done before continuing?
View 2 Replies
View Related
Nov 7, 2009
I've moved over from a Samsung Glyde (aka biggest pos ever) and am so far loving my droid. I'd like to thank everyone that contributed to the app lists/tips/tricks threads. All of it has made moving over to Android so much easier. Really, those kinds of things help us nubs
So far I've only had one real concern with the Droid, and I was wondering if this was unique to my phone, the Droid itself or if its an Android thing.
I downloaded Advance Task Killer as so many have recommended and have noticed that certain apps will simply start themselves running in the background it seems for no other reason than the phone sees the spare memory and fills it up in anticipation that I might run one of them. As you can imagine this is quite frustrating and annoying. Not only does it eat up valuable RAM space but also is eating battery (probably) in the process.
In particular, I notice the Corporate Calender, Voice Dialer, and Visual VM all tend to start themselves up on their own. What's interesting to me about this is I don't even use these applications. In fact, my corporate calendar is not setup, nor have I even opened it once. My phone could be sitting on my desk in sleep mode for an hour and then I'll wake it up and open Task killer to find 10 apps open that I never used.
View 14 Replies
View Related
