I recently started messing with Android Apps, but I have had nothing but problems trying to get them into the Virtual Device for testing. For some reason, they never seem to show up in the AVD. It has worked one time, but that's it out of hours spent just trying to test one or two very simple apps.
I've redone the AVD setup many, many times, trying different settings and what not to no avail. I've followed multiple guides and tutorials to the letter to get it working, but they just refuse to show up in the list. :(
Any insight would be appreciated, thank you.
I would start by testing apps that are known to work. Here are sixty or so of them.
In particular, I would start with this one. Do not change anything. Do not import it into Eclipse. Just install Apache Ant (if you haven't already), and run ant install in the project directory with your emulator running.
Either this shows up in your emulator, or it does not.
If it does not, try reinstalling the entire SDK.
If it does, then you know that your base environment is OK, and you can start slowly determining the differences to figure out where things are going wrong.
Helping you is difficult right now because your symptoms are a bit generic. It could be that you are using Eclipse and Eclipse is having a problem. It could be that your adb daemon is having a problem. It could be that you don't have any activities in your manifest, so the application is actually installing but there are no icons in the launcher. And so on.
Related
There seem to be too many bugs which have not been properly documented, regarding android studio. I am trying to run a basic Hello world app, and this error is truly making me give up any more efforts.
What I did:
Open Android studio(also tried running as administrator) and tried to run the default Hello world app on an Android 10 device(Xiaomi). At the start it shows Failed to start monitoring 7D8XXCOJGQQCZLJV(device number). At first I ignored it being a beginner and clicked on the run button. The file was successfully built and the RUN section shows 'Install successfully finished'.
Now for clarity here are some screenshots that will display what happened on my android device after the above steps:
The app seemed to be installed correctly, but whenever I click on the app logo the response I get is really frustrating:
As per the this link I tried to go to the device manager and do some changes, by setting and enabling Xiaomi drivers for Portable devices.
But then windows shows:
If anybody knows how to solve this, please do help me in doing so. It is quite discouraging to experience so many errors, right at the beginning. If somebody could give a working solution then that would really help me in continuing my android journey.
There was just a tiny error that led to this entire problem. This was because I had set the value of android:exported="false" in the main activity, which had to be set to true. Hope that this may help anybody in the future!
set the value of android:exported="true" in the AndroidManifest
Hey guys and girls for a the past week I've grown a lot of interest in android studio (even without knowing quite much about it) I decided to create an app that I deemed quite useful. However the app required maps to be integrated in it and I really did not know what I was doing and at one point I started messing with the settings and then all hell broke loose and I kept getting AAPT2 errors and I even tried to fix this issue with the gradle properties line that you add (I forgot the line of code to add). Anyways it still didnt work. However I rembered that I always kept the good version (before I broke everything) of the app on my phone. So when I go in my phone the app is there and it works just fine. Ive tried so many things to get the source code from the app on my phone without any succes. My question is, how can I get the source code back from the working app onto my laptop to continue coding in android studio? If it helps I am using Linux 18.04 LTS and running the newest version of android studio. Thank you for any help from you guys. This means a lot to me.
You can’t get back the ‘source code’ from an already compiled app.
You should consider using some version control platforms like git from the next time
So I updated my Android Application lately and exported it to a .apk so I could send it to some other android phones. The exportation finished without errors, and everything was fine. But when I installed the app using the .apk, it seemed like I got an older- or half version of the app. Some functions don't work at all, and the app takes about 50% less space on the other phones. On my own phone, the app works perfectly and takes all the space it's supposed to. The weird thing is that I'm using the same .apk to install the app on both my own phone and the other phones.
Is there a possible error or solution for this? I really need the new functions, or the app won't work well! I also searched for a solution for hours, so don't blame me if there's already a same question out there.
Try Clean
Select your project in Package Explorer
Go to Project in menu and select clean.
Press F5
If this does not works
Try restarting eclipse else restart your PC
Sometimes Eclipse will not be able to access your files if they are not referenced correctly.
If this does not works try putting your code here that is not working.
Thanks.
I would like to ask my fellow developers of their experience with eclipse.
I have recently started with eclipse and android, though the interface and development is not bad at all; but i have a major nagging issue.
Out of the blue eclipse or android compiler, am not sure, decides to go bonkers and misbehave. I spend so much time trying to debug and find errors in my code just to realize that a shutdown and restart of eclipse fixes it.
For example, one of my elements was returning null (using findViewById in android) - i spend about an hour trying to debug. Then decided to restart eclipse and it was fine. I wonder why?!
Is there anything that i ought to do ? ANything that i am missing with the eclipse settings. It really troubles me because it puts a brake on my development every now and then
Thanks
I personally never got comfortable with Eclipse and wound up settling on IDEA. When I had to work in C#, I found I was so stuck on it that I sprung out of my own pocket for the plugin to make Visual Studio work like IDEA
When I started to pick up Android, I begrudgingly went back to Eclipse, but once I needed to actually do something in Android, I checked back and discovered current version of IDEA (including the free one) supports Android development now too. Instructions for Eclipse all translate to it reasonably well, and the emulator won't change, so if that's where the issue is, you should find out reasonably quickly.
There are two general things that I suggest:
Fire up the emulator from outside of eclipse at startup time and leave it running (if you don’t already do this).
Add some memory to your development machine.
i know that eclipse has a couple of glitches when it comes to updating your app and running it on the emulator, i have tried everything that i have found on the internet. Stopping the adb manually making a new emulator and starting it with "wipe user data" and restarting it even reinstalling all of the programs. What i have noticed is that it updates correctly until i start adding images to the drawable folder. After that it doesn't update at all. Can anybody help me its really frustrating also the pictures show up on the "graphic layout how they are suppose to it just doesn't update.
When you add images/resources to the project Eclipse sometimes (always?) doesn't realize anything changed. So then when you run the project, you are just running the last version.
A simple way around that is to change one character of code, change it back, and then run your project forcing Eclipse to recompile and upload the new project with the new resources to the device/emulator.
Do you use 9-patch images? If yes - they should be valid. Once I added an invalid 9-patch image and as a result my Eclipse failed to build the app while it had not informed me what was wrong, so I spent some long time figuring out what it could be.
Another idea - image file name should only consist of a-zA-Z_ chars. Yes, commonly used '-' (minus) char is not allowed.