I have designed an android application which is perfectly cool and it's working well. but I feel it's using System badly, Because i have written complicated codes.
I was wondering if i can monitor my application. For example see how much RAM, Network, CPU is using and how fast my app is.
Use Android Monitor in Android Studio.
Related
I recently purchased a Yuneec Breeze quad-copter drone that uses an Android and iOS app with its own WiFi connection as a controller.
I am looking to write a Java application that performs the functions of the Android app with Game Controller support (the Breeze Cam app uses the touchscreen which means my big thumbs cover the streaming video) but am running into a roadblock.
While being proficient in Java, including network functions, I find myself woefully uninformed as to how to capture and read the network traffic between my phone and my drone. Its simply a skill I never needed until now.
Any place to help me get started?
OR -
Since I'm writing this in Java would de-compiling and hacking away at the Android source be a more viable option?
If so what decompilers are recommended?
In my experience these apps tend to be written in proprietary code. Android may be an open-source project, but the apps written for it don't have to be. It's unlikely you'll be able to write your own code to control the drone unless Yuneec provides an API/SDK to do so.
A quick Google search yields this thread on their forums: https://yuneecpilots.com/threads/api-sdk.745/
It's not much info, but it looks like you're SOL. Sorry.
Using Tasker for Android (link: https://play.google.com/store/apps/details?id=net.dinglisch.android.taskerm) and a widget-composing tool, Zooper (link: https://play.google.com/store/apps/details?id=org.zooper.zwpro ) I have automated my Android phone to automatically register certain data whenever the phone enters or leaves certain WLAN-covered areas or connects/disconnects to certain BlueTooth devices.
The registered data is kept in simple Tasker-variables and a widget simply displays (some of) the contents of those variables to the user - it is really that simple.
Together this system works like an ever running background application with an always-updated (simple) user interface (the widget).
I am so happy with what this system does that I now want to convert the whole thing into a real, yet very tiny Android app that can be download and installed from Google Play.
However, I never developed an Android app before (and not an IOS app either!). But being a professional C# developer (and former C++ developer) for Windows desktop applications and Windows services for many years now, I feel confident that I can also learn how to make such a simple Android app, even if it involves programming languages with which I’m not so confident by now (Java for example).
What I need is a few directions to get me started the right way:
Which tools do I need for making such a simple app?
Can it be done in Visual Studio, or do I need to use Eclipse or
Xamarin?
Can it be done in C# or must it be done in Java?
Do I need to buy licenses for development tools (other than Visual
Studio) or can it be done with free software?
How would you go about the whole thing?
Any input will be much appreciated!
I'm quite new to Android world and I have been developing an Android application with Phonegap (Jquery) that communicates with a Background Service (Java) that reports GPS location every 10 secs. The memory consumption is usually around 30MB, not that much, however I have perceived that Android, for some reason, kills my application after a while, probably because it needs more memory.
So, Is there a way of avoiding that? If not, how can I detect when the application is being killed?
If your app is getting killed by the OS due to normal usage memory pressure, there is no way to avoid that as that is what the OS was designed to do with backgrounded apps.
You will have to find a way to recover gracefully but your webapp is starting as if it was newly launched.
As an alternative you can convert your app to a native app. While the same thing is happening with a native app, its happening much quicker as all of the UI elements are native UI elements (buttons, text fields, etc.) while in a webapp you are injecting HTML and JavaScript into a WebView and depending on the Webkit engine to render everything. Should you go the native route, the documentation and tutorials available at Android Developer site are available.
I have a nice PC Desktop that I run all my development applications, Visual Studio, SQL Server instance running, Eclipse, Spring Eclipse etc... everything is fairly fast.
But when I run a simple, little, empty android hello world app, it takes literally 3 or more minutes for the Android get started!!! I don't believe I am the only one experiencing that? I don't want to run in the device every single time... usually it is handy run in the emulator just like I do with XCode to IPhone simulator...
any experience with that? solution tips?
thanks
You can use android-x86 (helpful post). x86 port works faster than emulator, but I recommend use a real device to avoid emulator-specific problems.
The Android emulators, especially the older ones, are notoriously slow. This is because they not only have to run an OS in an OS, but they must also emulate an ARM processor Architecture, on a x86 or x64 processor. This makes them rather slow.
However, you do get Intel images for ICS, which are built for x86 and run faster. You could also try using the older emulators. They got progressively slower upto honeycomb. You could also try increasing the emulator RAM and get a minor speed boost.
Other than that, you could leave the emulator running once started, as then it's much faster to test your apps, since you don't need to start it up everytime.
However, I would personally recommend testing on a device, as you will never get the same quality and accuracy in debugging on an emulator.
There is an Android emulator called Bluestacks that you can use for apps as well. It is less for development and more for playing Android games on your PC, but if you don't mind testing your app in a non-standard launcher environment then it is super fast.
You can even use it for debugging and access DDMS from Eclipse as well by following these steps:
Open Bluestacks
In your 'platform-tools' folder in command prompt, type "adb connect 127.0.0.1"
Try to run your app or debug from Eclipse and you should see a new device listed for Bluestacks.
It doesn't have the same type of hardware/environment emulation that the normal emulator does, so it will not be appropriate for testing all apps, but I use it whenever I can because the normal emulator is such a headache.
So far, there is no solution for that...I have to buy a nexus to run my apps to make the development viable
What are mobile phones supporting Java Android?
Is there any Nokia phone supporting this technology?
What should the mobile contain (a framework, a plugin.. etc) if we want to deploy a Java Android Application?
Android can be deployed to many devices with custom builds of the OS; anyone can build Android . It is not limited to particular handset makers and you might want to consult the makers for official lists of deployed devices.
There is nothing the device needs to contain (other then an appropriate targeted version of Andrdoid) to deploy an application.
One important note is that the application IS NOT run in the JVM, the code is only written in Java and then converted to Dalvik bytecode when compiling (Android runs on the Dalvik Virtual Machine). Since the code is written in Java though you can make extensive use of existing libraries and use them in your applications.
There is a fairly comprehensive list on Wikipedia comparing devices running Android, including forthcoming devices.
Nokia seems to have no interest using Android platform for its devices.
If the device is a certified Android platform, there is nothing one needs to add for deployment.
I think most phones that run Android should support Android applications. However, IMHO one would be hard pressed to compile a list of those phone.But rest assured, it's a lot. Someone DID make a list! And yep, it's a lot.
Some quick Googling reveal that Nokia seems to not like Android so I would assume there is not a Nokia phone with Android.
Framework: Eclipse Galileo with the ADT plugin
My advice:
read this site inside and out! http://developer.android.com/index.html
It answers all your questions.