Recently When attempting to build and run a Flutter app, I encountered the following message: 'Could not locate aapt. Please ensure you have the Android BuildTools installed. Exception: Problem building Android application' I've already installed both the BuildTools and the Android SDK, so I'm unsure what might be causing this issue.After struggling, I was able to identify the problem, and in this post, I will discuss various solutions.

The error "Could not locate aapt. Please ensure you have the Android buildtools installed. No application found," you need to ensure that the Android build tools, including `aapt`, are installed and properly configured in your development environment.

Here's a detailed solution along with an example:

1. Install Android Build Tools:

Make sure you have the Android Build Tools installed on your development machine. You can install them using the Android SDK Manager or Android Studio.

2. Set Android SDK Path:

Ensure that the environment variable `ANDROID_HOME` is correctly set to the location of your Android SDK. You can set it manually or through your IDE's settings.

3. Verify Build Tools Installation:

Check if the `aapt` tool is available in your Android Build Tools installation directory. It should typically be located in the `build-tools` directory within your Android SDK installation.

4. Update Build Tools Version:

If you already have the Android Build Tools installed, ensure that you have the appropriate version required by your project. You can update the version in your project configuration files, such as `build.gradle` or ``.


    # Install or update Android Build Tools using SDK Manager
    sdkmanager "build-tools;30.0.3"

Ensuring that the Android Build Tools are properly installed and configured, you should be able to resolve the "Could not locate aapt" error and proceed with your Android application development.

Solution 2:

Go into the folder where the Android SDK is located. Then navigate to the 'build-tools' directory and delete everything inside it. After that use Android Studio to reinstall the build tools. This action should solve the problem.

You can also try updating Android Studio, checking for updates through the SDK Manager, or troubleshooting specific issues with the build tools without resorting to deleting and reinstalling them.

Solution 3:

When we run `flutter doctor` in the command prompt, we might encounter a message similar to this:

    [!] Android toolchain - develop for Android devices (Android SDK version 32.0.3) X Android SDK file not found: C:\Users\ashok\AppData\Local\Android\sdk\build-tools\32.0.3\aapt.

The problem indicated here is that the Android SDK version 32.0.3 is not installed successfully. To address this issue, we can follow these steps:

  1. Download the Android SDK Build Tools version 32.0.3 separately from this link.
  2. Unzip the downloaded file.
  3. Replace the contents of the existing directory located at `C:\Users\ashok\AppData\Local\Android\sdk\build-tools\32.0.3` with the contents of the downloaded and unzipped folder.
  4. Restart your system to ensure the changes take effect.
  5. Verify the installation by running `flutter doctor` again.

Solution 4:

First, you sould ensure whether the Android SDK is installed and configured properly on your system. If it's already installed, then check if the Android SDK is stored on an unmounted drive. If this is the case,try to mount the drive. It's possible that disabled the auto-mount feature of hard disk partition in Ubuntu OS, which could have caused the problem.

Solution 5:

When we encounter the error "Could not locate aapt. Please ensure you have the Android buildtools installed. No application found for TargetPlatform.android_arm64. Is your project missing an android\app\src\main\AndroidManifest.xml? Consider running 'flutter create .'", because we've moved the Android SDK from one location to another, causing the project's SDK path to become outdated.

To resolve this issue, we can update the SDK location for our project using the following command in Android Studio terminal:

    flutter config --android-sdk SDK_PATH

For example:

    flutter config --android-sdk E:\Sdk

Solution 6:

For us, the issue was resolved by running `flutter doctor` in the command prompt. We discovered that the root cause of the problem was related to accepting licenses for Android development components.

Running `flutter doctor --android-licenses` and then typing 'y' to accept all licenses resolved the issue for us. Alternatively, we could use the command `flutter config --android-sdk` after updating Android Studio and referring to the path from the SDK Manager.