Develop Reference

Switch from aapt to aapt2 for native app packaging

We have a great build system, so we're not looking to use gradle. Right now, we use appt to build an APK and it works great and the APK runs well. I see that aapt2 is the future, though, and so we'd like to move to it before we're forced to.
What we currently do:
We have a simple icon in res/mipmap/our_icon.png
We have our ./AndroidManifest.xml file
We have our libMyApp.so stored in apk/lib/armeabi-v7a/libMyApp.so
We build using the following command: aapt package -f -M AndroidManifest.xml -S ./res -I /opt/android-sdk/platforms/android-28/android.jar -F my app-unsigned.apk apk/
We then zipalign and sign using apksigner and the app loads just fine. As you can see, all very simple and gives us just what we need.
I've tried the following with aapt2, but of course it is incorrect:
aapt2 compile ./res/mipmap/our_icon.png -o ./compiled
aapt2 link -v -I /opt/android-sdk/platforms/android-28/android.jar -I compiled/mipmap_our_icon.png.flat --manifest AndroidManifest.xml -o MyApp-unsigned.apk
note: including compiled/minmap_our_icon.png.flat.
error: failed to open APK: Invalid file.

You're trying to provide the resources the way you'd provide an APK (e.g. android.jar):
-I compiled/mipmap_our_icon.png.flat
To pass compiled resources use the -R flag (per each resource or use the wildcard * if you want to pass the whole directory, e.g. compiled/*).
You can find more info on differences between aapt and aapt2 in my old answer here.

unity google ads plugin problem CommandInvokationFailure: Failed to re-package resources

I'm facing a problem in building my game to apk after I implemented unity google ads plugin. Before adding the plugin the build worked.
The problem is the error mentioned below:
CommandInvokationFailure: Failed to re-package resources.
CommandInvokationFailure: Failed to re-package resources.
C:\Users\Hamid Red\AppData\Local\Android\Sdk\build-tools\29.0.2\aapt.exe package --auto-add-overlay -v -f -m -J "gen" -M "AndroidManifest.xml" -S "res" -I "C:/Users/Hamid Red/AppData/Local/Android/Sdk\platforms\android-29\android.jar" -F bin/resources.ap_ --extra-packages android.arch.lifecycle:androidx.arch.core:androidx.asynclayoutinflater:androidx.browser:androidx.coordinatorlayout:androidx.core:androidx.cursoradapter:androidx.customview:androidx.documentfile:androidx.drawerlayout:androidx.fragment:androidx.interpolator:androidx.legacy.coreui:androidx.legacy.coreutils:androidx.lifecycle.livedata:androidx.lifecycle.livedata.core:androidx.lifecycle:androidx.lifecycle.viewmodel:androidx.loader:androidx.localbroadcastmanager:androidx.print:androidx.slidingpanelayout:androidx.swiperefreshlayout:androidx.versionedparcelable:androidx.viewpager:android.support.compat:android.support.coreui:android.support.coreutils:android.support.fragment:android.support.mediacompat:android.support.v4:com.google.android.gms.ads.impl:com.google.android.gms.ads_base:com.google.android.gms.ads_identifier:com.google.android.gms.ads:com.google.android.gms.common:com.google.android.gms.gass:com.google.firebase.measurement:com.google.android.gms.measurement_base:com.google.firebase.measurement_impl:com.google.android.gms.measurement.sdk:com.google.android.gms.measurement.sdk.api:com.google.android.gms.stats:com.sglib.easymobile.androidnative:com.google.unity:com.google.unity.ads:com.unity3d.ads -S

Follow the picture and resolve dependencies:
If it still doesn't work then it can be due to outdated android sdk.
https://github.com/unity-plugins/Unity-Admob/issues/70
https://forum.unity.com/threads/solved-still-commandinvokationfailure-failed-to-re-package-resources-after-updating-android-sdk.496425/
Might help you.

Android chromium full browser apk build issues

I trying to build chromium android apk with this instruction
But on GN configuration step I have following problem after arguments file editing and saving
ERROR at //build/config/android/internal_rules.gni:1966:13: Script returned non-zero exit code.
exec_script("//build/android/gyp/find.py",
^----------
Current dir: /home/artem/chromium/src/out/Default/
Command: python -- /home/artem/chromium/src/build/android/gyp/find.py ../../third_party/android_tools/sdk/extras/google/google_play_services/libproject/google-play-services_lib/res
Returned 1.
stderr:
../../third_party/android_tools/sdk/extras/google/google_play_services/libproject/google-play-services_lib/res does not exist
See //build/config/android/rules.gni:634:3: whence it was called.
process_resources(process_resources_target_name) {
^-------------------------------------------------
See //third_party/android_tools/BUILD.gn:120:1: whence it was called.
android_resources("google_play_services_default_resources") {
^------------------------------------------------------------
See //base/BUILD.gn:1074:7: which caused the file to be included.
"//third_party/android_tools:cpu_features",
^-----------------------------------------
Then I try manually download google play services with command from this issue thread:
sudo ./build/android/play_services/update.py download
And get this warning:
Your version of the Google Play services library is not up to date. You might run into issues building or running the app. Please run `./build/android/play_services/update.py download` to retry downloading it.
After that I try to build full browser apk
ninja -C out/Default chrome_public_apk
and get error:
ninja: Entering directory `out/Default'
ninja: fatal: chdir to 'out/Default' - No such file or directory
Is there the way to fix this issue and build working apk file?

This works for me:
Run this command at chromium folder:
git rebase-update
gclient sync
Download google play services:
sudo ./build/android/play_services/update.py download
Configure GN: gn args opt/Full
Add this line to file: target_os="android"
Build apk with command: ninja -C opt/Full chrome_public_apk

Building webrtc library

I am trying to build webrtc android demo application. I was following README applied by the project. First thing was mentioned about gclient but when i tried to run it "no external or internal command". Then i got this link according to the this link i cloned the depot_tool repository but when at the step when i try to run gclient i got this
So after hours of trying i am not able to run it. if any one has experience with this WebRTC library please provide some help. Any guidance? Any Hlep will be appreciated

I heard few things were changed from svn to GIT. We tried building webRTC to windows7 using visual studio. See if you can use any parts on this.
Get depot_tools software and extract to a location (set this path in environment variable).
cd to depot_tools directory and hit 'gclient' (this should take sometime)
Install python 2.7 and put it path.
create a folder of your choice for webRTC and open command prompt there.
Now hit, gclient config http://webrtc.googlecode.com/svn/trunk
then, gclient sync.
Then set GYP_GENERATORS=msvs environment variable (use ninja if you want that).
Also set msvs_version=2012 (depending on your visual studio version)
now run, gclient runhooks --force
This should generate solutions files for your folder. fireup the libjingle/webrtc.sln files and start building it. I'm not sure if it builds as is. But we had hicupps with that.
See this link on WebRTC native development if you haven't already. From my personal experience building this tricky job initially.
Also note that links might be deprecated as they moved to git, don't know if they are still maintaining it.

How to compile WEBRTC On ubuntu
download script and run:
https://cs.chromium.org/chromium/src/build/install-build-deps.sh
./build/install-build-deps.sh --no-chromeos-fonts
Now download depot tools
$ git clone --depth 1 https://chromium.googlesource.com/chromium/tools/depot_tools.git
Put it in Path
$ export PATH=`pwd`/depot_tools:"$PATH"
Define your settings:
export GYP_DEFINES="target_arch=x64 host_arch=x64 build_with_chromium=0 use_openssl=0 use_gtk=0 use_x11=0 include_examples=0 include_tests=1 fastbuild=1 remove_webcore_debug_symbols=1 include_pulse_audio=0 include_internal_video_render=0 clang=1 "
make file to download the source
mkdir webrtc-checkout
cd webrtc-checkout
I chose branch 50 you can change it
gclient config https://chromium.googlesource.com/external/webrtc.git#branch-heads/50 --name=src
gclient sync --force --with_branch_heads
gclient sync --force --with_branch_heads --nohooks
cd src
git checkout branch-heads/50
gclient runhooks
ninja -C ./out/Release
Collect your LIB & Include file to use it in your project
mkdir ../lib/
find ./ -name "*.o" -and -not -name do_not_use -and -not -name protoc -and -not -name genperf -exec ar crs ../lib/libwebrtc.a {} +
mkdir ../include
find ./ -name *.h -exec cp --parents '{}' ../include ';'

Creating Project Cocos2d-x-3.1.1

I have downloaded Cocos2d-x-3.1.1 but it does not include #create-android-project.bat and #create-android-project.sh then i download these 2 files from the internet and i tried to create project i receive the error. anyone have any idea please kindly help.
.............
Resolved location library project to C:\ADT\cocos2d-x\cocos2dx\platform\android\java
Error: Project folder 'C:\ADT\cocos2d-x\cocos2dx\platform\android\java' is not valid directory
Error: No Android manifest at: C:\ADT\cocos2d-x\cocos2dx\platform\android\java
Error!!!
Don't run in cygwin. You should run corresponding bat.
Press any key to continue.

$ cocos new ProjName -p com.compnyName.ProjName -l cpp

You should use cocos2d-console for creating project.
$ cocos2d-x-3.1.1/tools/cocos2d-console/bin/cocos new -d . -p com.example.testproject -l cpp TestProject