Resource Ids are not generated in Apk while compiling

Know_About_IT · April 15, 2023, 4:04pm

Hello, another day of experimenting with MIT Appinventor sources, I found one issue here. I started by implementing material library and faced some errors while disappeared with progress by adding necessary libraries. Now, only 2 errors are there in my compilation logs :

[java] C:\Users\Rudra\AppData\Local\Temp\1681574083329_0.1066277752152619-0\youngandroidproject\..\build\intermediates\res\merged\layout\material_clock_period_toggle.xml:15: error: Error: No resource found that matches the given name (at 'checkedButton' with value '@id/material_clock_period_am_button').
     [java]
     [java] C:\Users\Rudra\AppData\Local\Temp\1681574083329_0.1066277752152619-0\youngandroidproject\..\build\intermediates\res\merged\layout\material_timepicker_dialog.xml:79: error: Error: No resource found that matches the given name (at 'layout_constraintEnd_toStartOf' with value '@id/material_timepicker_ok_button').
     [java]
     [java] Apr 15, 2023 9:24:54 PM com.google.appinventor.buildserver.Compiler runAaptPackage
     [java] WARNING: YAIL compiler - AAPT execution failed.

BUILD FAILED
C:\Users\Rudra\Documents\sources-beta\appinventor\build.xml:22: The following error occurred while executing this line:
C:\Users\Rudra\Documents\sources-beta\appinventor\buildserver\build.xml:199: Java returned: 1

As you can see, even if the id of xml attribute is defined, it can't be resolved. It has to do something with layout id generation mechanism of ai2. Here's the layout file for reference :

github.com

material-components/material-components-android/blob/532b65d008be12c6889aac1bc2de411af5356891/lib/java/com/google/android/material/timepicker/res/layout/material_clock_period_toggle.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
     Copyright 2020 The Android Open Source Project

     Licensed under the Apache License, Version 2.0 (the "License");
     you may not use this file except in compliance with the License.
     You may obtain a copy of the License at

         http://www.apache.org/licenses/LICENSE-2.0

     Unless required by applicable law or agreed to in writing, software
     distributed under the License is distributed on an "AS IS" BASIS,
     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     See the License for the specific language governing permissions and
     limitations under the License.
 -->

<com.google.android.material.button.MaterialButtonToggleGroup
  xmlns:android="http://schemas.android.com/apk/res/android"
  xmlns:app="http://schemas.android.com/apk/res-auto"

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@ewpatton is there something like id generation system in ai2? Like In Android Studio, a file named public.xml is generated with all the ids.
(A pic from the decompiled Android Studio Apk)

ewpatton · April 17, 2023, 11:07pm

We generate the R.txt file, not the R.xml file. It's generated by aapt, not technically by us. The relevant method is runAaptPackage if you need to modify the AAPT call.