Qt Creator中无法运行Android应用：部署步骤报错求助

Let's work through this issue step by step—here are the most likely fixes for that frustrating error when trying to run your Android app:

1. Verify Qt Creator Kit Configuration #

First, double-check that your Android kit is properly set up:

• Open Qt Creator, go to Tools > Options > Devices > Android
• Confirm the paths for Android SDK, Android NDK, and JDK match your installed locations:
  • SDK: /opt/AndroidSDK
  • NDK: /opt/AndroidNDK
  • JDK: /usr/lib/jvm/default
• Switch to the Kits tab, find your Android for armeabi-v7a (GCC 4.9, Qt (android_armv7)) kit, and verify:
  • The SDK/NDK/JDK paths are correctly linked to this kit
  • The kit isn't marked as invalid (no red warning icons)

2. Restore Missing Android Build Steps #

It sounds like your project's build pipeline is missing the required Android step:

• Open your project, go to the Projects tab (left sidebar)
• Switch to your Android kit under Build & Run
• Look at the Build Steps section:
  • If there's no Android Build step, click Add Build Step and select Android Build from the dropdown
  • Ensure the Deploy to Android device step comes after the Android Build step
  • For the deploy step, make sure USB Device is selected as the target

3. Check NDK/SDK Compatibility #

Qt has specific version requirements for Android tools, even if you have the right packages installed:

• NDK 10e is compatible with most Qt 5.x versions, but confirm your Qt version supports it (Qt 5.7+ works well with NDK 10e)
• Open the Android SDK Manager (you can launch it from Qt Creator's Android settings or via sdkmanager in your terminal) and install:
  • SDK Platform Tools (latest stable version)
  • Build Tools version 28.0.3 (a reliable version for Qt projects)
  • At least one Android SDK Platform (API level 21-28 is recommended for broader compatibility)

4. Force Qt Creator to Load Your Environment Variables #

Sometimes Qt Creator doesn't pick up system-wide environment variables from /etc/environment automatically:

• Go to Tools > Options > Build & Run > Environment
• Click Add and manually input these variables:
  • ANDROID_HOME=/opt/AndroidSDK
  • ANDROID_NDK_HOME=/opt/AndroidNDK
  • JAVA_HOME=/usr/lib/jvm/default
• Restart Qt Creator to ensure the variables take effect

5. Confirm USB Device is Recognized #

Even if USB debugging is enabled, your system might not be detecting the phone:

• Open a terminal and run adb devices
  • If your phone shows up with a device ID and "device" status, it's recognized
  • If not, create a udev rule to fix permissions:
    1. Create /etc/udev/rules.d/51-android.rules with this content (replace YOUR_VENDOR_ID with your Karbon Titanium's USB vendor ID—you can find it via lsusb):

       SUBSYSTEM=="usb", ATTR{idVendor}=="YOUR_VENDOR_ID", MODE="0666", GROUP="plugdev"
       

    2. Reload udev rules:

       sudo udevadm control --reload-rules && sudo udevadm trigger
       

    3. Disconnect and reconnect your phone, then run adb devices again

内容的提问来源于stack exchange，提问作者user9392253