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Error building Qt app for Android with Qt Creator

When I tried to build QtFireExample with my QtCreator, failed with below error message.
The installed SDK tools version (26.1.1) does not include Gradle
scripts. The minimum Qt version required for Gradle build to work is
5.9.0/5.6.3 Error while building/deploying project QtFirebaseExample (kit: Android) When executing step "Build Android APK"
My android studio is 3.2.1. And SDK tools 26.1 is also installed.
qt version is also above 5.9.0
What I did mistake?
❯ qmake --version
QMake version 3.1
Using Qt version 5.12.0 in /usr/local/Cellar/qt/5.12.0/lib

There's more steps to follow before you can deploy your first Android app using QtCreator. Installing SDK tools is not enough. Here is what I did, I'm using Windows, but hopefully the steps are the same under Ubuntu.
Install QtCreator using the link provided by Hitokage, include QtCreator (I got version 4.8.0), and Qt 5.12.0 binaries for your platform + needed Android (armv7, x86...)
Get JDK 1.8.X.X
Get NDK r18b (or a more recent version)
Get SDK tools 26.1.1 (what you already did)
SDK tools itself is not enough, some SDK modules must be installed, from SDK tools folder, run:
sdkmanager platform-tools
sdkmanager build-tools;28.0.3
sdkmanager extras;google;usb_driver
sdkmanager platforms;android-22 (which is enough for me, you may want something different based on your target Android devices)
Then open QtCreator, Go to "Mobile devices" (my french version calls it "Appareils mobiles"), then make it point to installed JDK, SDK, NDK, clic Apply and then kits should be automtically created. Now you are ready to compile and deploy and Android app for API 22.
Note that gradle is automatically downloaded by QtCreator first time you'll request a deployment.

I have tried downgrading the SDK Tools which didn't work. What worked for me however was downloading the official QT installer (working on Linux), installed QT to a new directory along with ARM64-v8a and ARMv7 (which probably solved the problem, I didn't have that in the package I installed from Arch repo). Now I can (after allowing the developer and debug mode on the device) deploy the app on the phone.
EDIT: Then chose one of those auto-detected kits.

Freshly setup Qt build for Android fails on OSX machine

I am doing a fresh installation of Commercial Qt on a new MacOS Sierra machine. I am trying to build a sample Qt app for android & iOS. I am able to build my QtApp for iOS without any trouble.
But on android I get the following error:
Buildfile: build.xml does not exist!
Build failed
Building the android package failed!
-- For more information, run this command with --verbose.
19:47:50: The process "/Users/MyComputer/Qt/5.7/android_armv7/bin/androiddeployqt" exited with code 14.
Error while building/deploying project t1 (kit: Android for armeabi-v7a (GCC 4.9, Qt 5.7.1))
When executing step "Build Android APK"
I have downloaded latest ndk r14b from here.
I have installed latest sdk that comes with Android Studio these days from here. And updated android sdkmanager to installed all platforms ranging from android-19 to android-25.
I have installed latest JDK 8 as well. I tested the android setup by building & running an android app from Android Studio which worked flawlessly.
Qt worked with Android pretty nicely. What has changed ? Should I do some tweaks because of some structural changes in Android ?
Copying PathToAndroidStudio/templates into PathToAndroidSDK/templates or PathToAndroidSDK/tools/templates as suggested here & here doesn't seem to be enough.
What more should I do apart from copying the templates folder as suggested in some other answers ?

You are trying to use Ant build system. Change it to using Gradle-based one or take a look here: The ant/ folder is suddenly missing from Android SDK. Did Google remove it?

Why cmake is missing in my SDK manager?

I am trying in android studio 2.2.3 to build c++ code with cmake.
But it report the following error:
Error:Failed to find CMake. Install from Android Studio under
File/Settings/Appearance & Behavior/System Settings/Android SDK/SDK
Tools/CMake. Expected CMake executable at
/Users/zhaoliang/Library/Android/sdk/cmake/bin/cmake.
I searched here and official site, which said we can install via SDK manager but there is no cmake in android studio->tools->SDK manager->SDK tools.
And I am using macbook pro not 32bit OS.

Error:Unable to obtain debug bridge in android studio

After updating Android Studio to 2.0 l am getting this error unable to obtain debug bridge and Android Device Monitor does not open. Anyone faced this error before?

I just open sdk manager and installed all android sdk tools and done.

Check whether you need to install "Android Sdk Platform Tools" in the Android SDK Manager.
Somehow, after installing Android Studio from the bundle (for Linux) I lacked the "platform-tools" directory in "Android/Sdk", where the adb executable resides. Installing the platform tools helped. It was easier to find in the standalone sdk manager.

This is because you deleted the adb.exe (it might be your antivirus who deleted it),that resided in the platform tools in the android sdk folder.
What you need to do is to delete the current platform-tools in the sdk manager program and re install it all over again.

I installed the right sdk version that matched my virtual device android version

I am also running the same problem when update android studio from 1.4 to 1.5 stable version. When I run adb command from terminal then i found following error :
bash: ./adb: cannot execute binary file: Exec format error
After R&d I found that this error occurs due to unsupported architecture. In my case:
I am using ubuntu14.04 LTS 32-bit. I observed that after updation, lib folder under platform-tools converted to lib64. I think above error occurs due to 32-bit architecture because after updation 32-bit support removed.
For permanent solution upgrade you system to 64-bit architecture.
Quick solution is to replace the updated platform-tools folder with old one that containing the lib folder instead of lib64.
I think 32-bit architecture support for android development stopped by google for future releases. But I am not sure.

I am phase these error when updating Android-SDK Plateform-Tools 23.1 in Android SDK Manager
i am worked on ubuntu 14.04 [32bit] that is not supporting with Plateform-Tools 23.1 it is only supporting in 64bit Operating System architecture that's why downgrade my Plateform-tools 23.0
it works perfect...!!!

Go to: Android Studio Settings > Appearance & Behavior > System Settings > Android SDK:
If path for SDK are text in red, change to your SDK folder and click ***APPLY***

Open the standalone SDK manager and install the platform tools package.

Qt does not detect Android NDK

I want to develop Android apps with Qt. I have Extracted the Android SDK and NDK to C:\. This is the NDK I downloaded:
https://squeak-android-vm.googlecode.com/files/android-ndk-1.6_r1-windows.zip
But Qt 5.2.1 does not detect the NDK and this error is shown:
"C:\android-ndk-1.6_r1" does not seem to be an Android NDK top folder.
Do I downloaded a wrong NDK? Did I miss something?
Thanks

First of all I strongly recommend to install the latest version of Qt for Android (5.4.1 at present). Also you should download and install Android SDK (ver. 22+) and NDK (ver. r9+) from here.
After downloading extract them. For Android SDK you should have a connection to Internet and download the desired tools. you have to install at least Android API-13! You should also install Android SDK Platform-tools and Android SDK Build-tools.

I had the same problem. The problem was I first created a Android NDK folder to extract the Android NDK files into it. The extraction procession then created a sub folder of the same name. To solve the problem, I moved the sub folder one directory level up and deleted the initial Android NDK folder I first created.