SDLActivity.java:1948: error: cannot find symbol case MotionEvent.ACTION_BUTTON_PRESS:

[Meteorix]

Versions

• Python: 2.7.15
• OS: Ubuntu18.04
• Kivy: 1.10.1
• Cython:0.29.5

Description

I want to build android apk using p4a. My python script is in ./code, simply print something.

export ANDROIDSDK="/home/ubuntu/android_sdk"
export ANDROIDNDK="/home/ubuntu/android_ndk/android-ndk-r16b"
export ANDROIDAPI="21"  # Target API version of your application
export NDKAPI="21"  # Minimum supported API version of your application

p4a apk --private ./code --package=org.example.myapp --name "My application" --version 0.1 --bootstrap=sdl2 --requirements=python2,kivy

buildozer.spec

not used

Logs

  RAN: /home/ubuntu/.local/share/python-for-android/dists/unnamed_dist_1/gradlew assembleDebug

  STDOUT:

> Task :compileDebugJavaWithJavac FAILED
/home/ubuntu/.local/share/python-for-android/dists/unnamed_dist_1/src/main/java/org/libsdl/app/SDLActivity.java:1948: error: cannot find symbol
            case MotionEvent.ACTION_BUTTON_PRESS:
                            ^
  symbol:   variable ACTION_BUTTON_PRESS
  location: class MotionEvent
/home/ubuntu/.local/share/python-for-android/dists/unnamed_dist_1/src/main/java/org/libsdl/app/SDLActivity.java:1949: error: cannot find symbol
            case MotionEvent.ACTION_BUTTON_RELEASE:
                            ^
  symbol:   variable ACTION_BUTTON_RELEASE
  location: class MotionEvent
/home/ubuntu/.local/share/python-for-android/dists/unnamed_dist_1/src/main/java/org/libsdl/app/SDLActivity.java:1952: error: cannot find symbol
                if (action == MotionEvent.ACTION_BUTTON_PRESS) {
                                         ^
  symbol:   variable ACTION_BUTTON_PRESS
  location: class MotionEvent
/home/ubuntu/.local/share/python-for-android/dists/unnamed_dist_1/src/main/java/org/libsdl/app/SDLActivity.java:1955: error: cannot find symbol
                else if (action == MotionEvent.ACTION_BUTTON_RELEASE) {
                                              ^
  symbol:   variable ACTION_BUTTON_RELEASE
  location: class MotionEvent
/home/ubuntu/.local/share/python-for-android/dists/unnamed_dist_1/src/main/java/org/libsdl/app/SDLAudioManager.java:116: error: cannot find symbol
                    channelConfig = AudioFormat.CHANNEL_OUT_7POINT1_SURROUND;
                                               ^
  symbol:   variable CHANNEL_OUT_7POINT1_SURROUND
  location: class AudioFormat
/home/ubuntu/.local/share/python-for-android/dists/unnamed_dist_1/src/main/java/org/libsdl/app/SDLAudioManager.java:328: error: cannot find symbol
        return mAudioRecord.read(buffer, 0, buffer.length, blocking ? AudioRecord.READ_BLOCKING : AudioRecord.READ_NON_BLOCKING);
                                                                                 ^
  symbol:   variable READ_BLOCKING
  location: class AudioRecord
/home/ubuntu/.local/share/python-for-android/dists/unnamed_dist_1/src/main/java/org/libsdl/app/SDLAudioManager.java:328: error: cannot find symbol
        return mAudioRecord.read(buffer, 0, buffer.length, blocking ? AudioRecord.READ_BLOCKING : AudioRecord.READ_NON_BLOCKING);
                                                                                                             ^
  symbol:   variable READ_NON_BLOCKING
  location: class AudioRecord
/home/ubuntu/.local/share/python-for-android/dists/unnamed_dist_1/src/main/java/org/libsdl/app/SDLAudioManager.java:336: error: cannot find symbol
            return mAudioRecord.read(buffer, 0, buffer.length, blocking ? AudioRecord.READ_BLOCKING : AudioRecord.READ_NON_BLOCKING);
                                                                                     ^
  symbol:   variable READ_BLOCKING
  location: class AudioRecord
/home/ubuntu/.local/share/python-for-android/dists/unnamed_dist_1/src/main/java/org/libsdl/app/SDLAudioManager.java:336: error: cannot find symbol
            return mAudioRecord.read(buffer, 0, buffer.length, blocking ? AudioRecord.READ_BLOCKING : AudioRecord.READ_NON_BLOCKING);
                                                                                                                 ^
  symbol:   variable READ_NON_BLOCKING
  location: class AudioRecord
/home/ubuntu/.local/share/python-for-android/dists/unnamed_dist_1/src/main/java/org/libsdl/app/SDLAudioManager.java:345: error: cannot find symbol
            return mAudioRecord.read(buffer, 0, buffer.length, blocking ? AudioRecord.READ_BLOCKING : AudioRecord.READ_NON_BLOCKING);
                                                                                     ^
  symbol:   variable READ_BLOCKING
  location: class AudioRecord
/home/ubuntu/.local/share/python-for-android/dists/unnamed_dist_1/src/main/java/org/libsdl/app/SDLAudioManager.java:345: error: cannot find symbol
            return mAudioRecord.read(buffer, 0, buffer.length, blocking ? AudioRecord.READ_BLOCKING : AudioRecord.READ_NON_BLOCKING);
                                                                                                                 ^
  symbol:   variable READ_NON_BLOCKING
  location: class AudioRecord
/home/ubuntu/.local/share/python-for-android/dists/unnamed_dist_1/src/main/java/org/libsdl/app/SDLControllerManager.java:435: error: cannot find symbol
                haptic.vib.vibrate(VibrationEffect.createOneShot(length, vibeValue));
                                   ^
  symbol:   variable VibrationEffect
  location: class SDLHapticHandler_API26
/home/ubuntu/.local/share/python-for-android/dists/unnamed_dist_1/src/main/java/org/libsdl/app/SDLControllerManager.java:666: error: cannot find symbol
                            x = event.getAxisValue(MotionEvent.AXIS_RELATIVE_X);
                                                              ^
  symbol:   variable AXIS_RELATIVE_X
  location: class MotionEvent
/home/ubuntu/.local/share/python-for-android/dists/unnamed_dist_1/src/main/java/org/libsdl/app/SDLControllerManager.java:667: error: cannot find symbol
                            y = event.getAxisValue(MotionEvent.AXIS_RELATIVE_Y);
                                                              ^
  symbol:   variable AXIS_RELATIVE_Y
  location: class MotionEvent
/home/ubuntu/.local/share/python-for-android/dists/unnamed_dist_1/src/main/java/org/libsdl/app/SDLControllerManager.java:709: error: cannot find symbol
            return event.getAxisValue(MotionEvent.AXIS_RELATIVE_X);
                                                 ^
  symbol:   variable AXIS_RELATIVE_X
  location: class MotionEvent
/home/ubuntu/.local/share/python-for-android/dists/unnamed_dist_1/src/main/java/org/libsdl/app/SDLControllerManager.java:719: error: cannot find symbol
            return event.getAxisValue(MotionEvent.AXIS_RELATIVE_Y);
                                                 ^
  symbol:   variable AXIS_RELATIVE_Y
  location: class MotionEvent
/home/ubuntu/.local/share/python-for-android/dists/unnamed_dist_1/src/main/java/org/libsdl/app/SDLControllerManager.java:768: error: cannot find symbol
            case InputDevice.SOURCE_MOUSE_RELATIVE:
                            ^
  symbol:   variable SOURCE_MOUSE_RELATIVE
  location: class InputDevice
/home/ubuntu/.local/share/python-for-android/dists/unnamed_dist_1/src/main/java/org/libsdl/app/SDLControllerManager.java:813: error: cannot find symbol
                SDLActivity.getContentView().requestPointerCapture();
                                            ^
  symbol:   method requestPointerCapture()
  location: class View
/home/ubuntu/.local/share/python-for-android/dists/unnamed_dist_1/src/main/java/org/libsdl/app/SDLControllerManager.java:816: error: cannot find symbol
                SDLActivity.getContentView().releasePointerCapture();
                                            ^
  symbol:   method releasePointerCapture()
  location: class View
/home/ubuntu/.local/share/python-for-android/dists/unnamed_dist_1/src/main/java/org/libsdl/app/SDLControllerManager.java:831: error: cannot find symbol
            SDLActivity.getContentView().requestPointerCapture();
                                        ^
  symbol:   method requestPointerCapture()
  location: class View
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
20 errors

[Meteorix]

I am experienced with python and c++ build system, but not familiar with android sdk. Am I missing something about Android SDK requirements?

[inclement]

export ANDROIDAPI="21" # Target API version of your application

Are you using python-for-android master? If so, you'll need to target Android API 26+. I think that's probably the origin of this error.

[Meteorix]

Thanks, I used pip to install the latest p4a release version. And it worked on API 26.

But what if I want to target Android API 21?

[inclement]

If you really want to set 21 as the target API you can use an older version of python-for-android. However, you almost certainly don't need to worry about it as the target API number isn't a minimum supported version or anything like that. It's more of a 'use api features from this version of android if available'. Apps targeting API 26+ can still be used by devices with older Android versions.

[Meteorix]

Really appreciate your explanation! I get it.