Develop Reference

can't open released flutter apk with chrome

recently I created a flutter application and tried to publish it, I got 4 files from flutter build apk --split-per-abi and tried all of them, but none of them was installable after downloading from a host, I want to put the apk files on the server to people download and install it, but when I download this with chrome it says:
can't open file
but when I share that downloaded file with telegram and try to install that shared file, there is no problem with it.
what should I do?
notice: while installing I get some security warnings like blocking from play protect
edit: I tried to do that with firefox and that works, it seems the problem is just with chrome

Install webextension on Firefox for Android from a website

I'm trying to install an unlisted webextension on Firefox for Android from a website but it keeps blocking it, even though it is signed (preliminarily reviewed).
I can only install it, by going to Mozilla's website, downloading it and installing it immediately. Not even if I run it from a file manager.
Do I need a custom certificate or something?
Thank you.
Source:
https://developer.mozilla.org/en-US/Add-ons/Distribution

Download IPA / APK from Crashlytics

I'm using Crashlytics to distribute an app for Beta testing.
While it is easy and convenient to install the app on devices from the Crashlytics app, I have not been able to figure out how I could download only the IPA from the Crashlytics server.
Background: I need to get the IPA / APK for automated testing. My test environment will re-sign the IPA to be able to install it to test devices, so going the Crashlytics app way doesn't work.
What I need would be a download link for the IPA / APK as it used to be available in TestFlight or Hockeyapp.

If you're using it with iOS, you can enable Settings > Safari > Advanced > Web Console, then look in the web inspector of the download link from the install page on iOS. It will look like this (I swapped in gobbledegook text for some parts):
<a class="primary-button js-install-button" href="itms-services://?action=download-manifest&url=https%3A%2F%2Fapps.crashlytics.com%2Fprojects%2F2F2F2F2F2FF2F2F2%2Freleases%2F2200806%2Fdownload.plist%3Fdevice_id%2F2F2F2F%26device_token%234JH23L4KH234LK2J34H2LK34H2LK3J4H2LK3JH42L3K4JH23LK4JH2L3K4JH2L3K4JH2LKJ3H4%253D--2KJ3H4LK2J3H4L2KJ3H4LK2J3H4LK23JH4LK2J3H4L%26payload_token%2KL34JH2LK3JH4L2K3J4HL23KJ4HL23JK4" id="most-recent-install">Install</a>
Then just copy out the URL-encoded URL:
https%3A%2F%2Fapps.crashlytics.com%2Fprojects%2F2F2F2F2F2FF2F2F2%2Freleases%2F2200806%2Fdownload.plist%3Fdevice_id%2F2F2F2F%26device_token%234JH23L4KH234LK2J34H2LK34H2LK3J4H2LK3JH42L3K4JH23LK4JH2L3K4JH2L3K4JH2LKJ3H4%253D--2KJ3H4LK2J3H4L2KJ3H4LK2J3H4LK23JH4LK2J3H4L%26payload_token%2KL34JH2LK3JH4L2K3J4HL23KJ4HL23JK4
Then urldecode that on your command line using PHP:
php -r "echo urldecode('{PASTE THE ABOVE URL HERE}');"
(Make sure that you use double quotes around the PHP line, and single quotes around the URL.)
Then paste the URL-decoded result into Safari on your Mac. You'll see an XML file; copy the download link and paste into your browser. This will download the IPA to your Mac :D

After poking around myself, it doesn't look like there is any way to pull an ipa or apk from Crashlytics Beta.
I would suggest using something like Jenkins or Fastlane to automate your build process and have it a) upload to Dropbox or somewhere you can easily refer to and b) upload automatically to Crashlytics for distribution.
The gradle crashlytics plugin provides a handy method to do this:
gradlew assembleDebug crashlyticsUploadDistributionDebug

As far as I can see there is no straight forward way to download an IPA from Crashlytics.
However, if you really need to get the file it can be done.
Copy the link target of the Install button in the Crashlytics mail (alternatively view source and copy from there, this is what I did)
Paste to Safari in the Simulator. This will install the Crashlytics app in the simulator
Open install page in the Crashlytics app in simulator
inspect simulator with your Macs Safari (Develop > Simulator)
Copy button link and open in Safari on Mac - there you go
Of course this is nothing you want to do as a standard procedure :)
And sorry this is iOS only, so no bounty for me :(

I found an easy way to get APK builds on Android. Follow these steps:
Install "Amaze File Manager" on your device. Free version is enough and it doesn't need your device to be rooted.
Open "App Manager" in the menu on the left
Find your installed build by its name
Press "three dots" and select "backup"
You will find your APK file in the storage/emulated/0/app_backup

This answer is probably too late, and is only specific to the APK file, but I did manage to identify where Crashlytics stores the APK before installation.
After installing Beta/Crashlytics on your device, go ahead and download your application, but don't install it - just leave it at the screen asking if you want to install (just in case Beta/Crashlytics deletes the APK after installation, not sure if they do though)
Then, using adb via another computer, identify the file name of your application by opening up a shell and finding all APK files.
Open command prompt or terminal, and run adb devices to ensure your device is recognized
Once recognized, run adb shell, and then type su to enter superuser mode
There are 2 ways - you can search for all APK files and look for a file name similar to what you would expect using "find / -iname *.apk" OR you can try listing the files sorted by modified date to look for a recently modified APK using the following command "ls -nl [directory] | sort -k 8,8n -k 6,6M" where [directory] is the directory you want to list
Note the location, and then exit adb, and grab the file using adb pull - in my case it was "adb pull /data/app/myapplication.apk"
TL;DR - Beta/Crashlytics downloads the APK file for your application to /data/app/ before installing. You may need root privileges to access this folder.
Hope this helps!

This may specifically help those who are trying to retrieve the APK file.
If you're using Android, you can use Android Monitor to extract the file downloaded from the Crashlytics Beta app.
In order for this to work, you must have already installed the Crashlytics Beta app and have downloaded your app from within the Beta app.
Then, follow these steps:
Open Android Device Monitor
Select your device in the "Devices" tab on the left
Click on the "File Explorer" View on the right
Navigate through the path: data/data/io.crash.air/files.
There you should find your .apk file
Click on the "Pull a file from the device" button in the top right.
Very complicated, but probably one of the few ways to extract it.
Another thought would be to use Wireshark to sniff the traffic when the device tries to download the APK/IPA file. This can be done while using an emulator.

I am using crashlytics for distributing app to testers, The steps are as
Install crashlytics(add fabric+crashlytics) to your code as described on their site.
Now, make archieve of your application.(Check that provisioning profile and signing identity, the udid of testers are added with provisioning profile).
Now, click on fabric symbol at right-top corner, click on distribute button on that.
Once you click on distribute, this will show textfield and add button to add email addresses of testers.
After adding testers email addresses click on next button and continue.
This will send email of ipa files to testers and show buttons to install it.
This is working fine will latest versions of iOS.

How to run an Android app which will run in any system without using Eclipse

I have created an Android Calculator app in Eclipse. If I want to run my app I need run it through Eclipse. But I want to run my app without Eclipse in any system as normal apps run, just download it and run.
If any one knows how to do this, please help me.

You probably want to take the .apk file in your bin folder. This file is your entire app packaged together.
You can run & install this on other Android phones, but they will have to have enabled "unknown sources" in application settings.
Otherwise, you'll have to publish to the app store, from where the entire world that owns an Android device can download it directly.

app run without eclipse in any system as a normal apps run
may I know how the normal apps run?
it need any emulator or device.
you can run the .apk file without eclipse also!.
download the Android SDk and create an emulator thru avd command and install any app.
the other way you can do by 3rd party software called BlueStacks App Player
this software is only for mac and Windows download here

Inside bin folder of your Calculator app project located on Hard disk there will be .apk file which you can transfer to your device then open file browser whichever you have that will allow you to install and run your application cheers.

Do you mean you want to install it on any device from your system, without the need to run Eclipse?
The command would be something like "adb install bin/MyCalculator.apk". Once you do that, your app is installed just like any other.
Do you mean you want anybody to install your app on their device? Your best bet is to just put it on the Android Market. Don't forget to generate a real signing key (don't use the Eclipse debug key) and sign your app properly before uploading it to the market.
If you don't want to use the market, then you can put the apk file on any web page, and have people download it with their browser. Then they go to their device settings and enable "Unknown sources". After that, they can run their browser, go to "Menu > Download" and select the apk they just downloaded.
Or, you can send the apk file to someone directly, and have them attach their device to their computer, enable USB, and copy the apk to their /sdcard directory somewhere. Then they launch a file browser (they'll have to install that first) and navigate to the apk file. I think that will allow them to install the apk on their device.
I think that should cover it.

You should generate the .apk file, and install it on any device you want..
http://www.technobitez.com/how-to/create-apk-files-for-android-phone
How to build an APK file in Eclipse?

why won't apk file update

I'm developing an android app using Eclipse. I export the app using the Export Android App function. I sign and align the resulting apk file. I then copy this apk to a webserver and try to install it on my phone. It goes though the installation steps, and when I test the app it does not contain my latest changes. It seems to install one of my previous builds.
Is the problem in:
- the way I create the apk?
- a cache on the phone that has not been cleared?
How do I get Eclispe to make a current apk, and how do I get my phone to install it?
How can I verify which version of my code is in a particular apk file?
Thanks,
Gerry

It could be that Eclipse isn't building the new .apk properly, though it sounds like you're exporting correctly. Are you giving the new .apk a different name from the old one? If not, then you could be downloading or installing the old one by accident.
You should be able to go into Settings -> Applications -> Manage Applications on your phone, then find your app and open its info page. The version string should be listed near the top, so you can verify that the latest version is installed.

Try running "adb logcat | tee logfile" (or adb logcat > logfile) before you begin the install attempt, then ctrl-C it and go over the file with a fine tooth comb - there's likely some hints of the problem buried within the noise.