Problem: After upgrading Android Studio from “Ladybug” to “Otter” I started getting the following error message when I run my app on my emulated test device: First, I ran the AGP Upgrade Assistant, which updated 2 files: And then, applied a “Run Configuration” Fix: Additional things to try if above suggestions weren’t sufficient to fix […]
Android
Android emulator shell list fails: Permission Denied in app directory
Today I learned I should include the app package name after shell in my ADB command, if for example I want to list files under the “subdirectory/media” directory of an app, like so: adb -s emulator-5556 shell run-as com.domain.my.app ls -al /data/user/0/com.domain.my.app/subdirectory/media First try’s command below failed with a Permission Denied error message: adb -s […]
Android: Broadcast sent, receiver registered, but receiver doesn’t receive broadcast
I should blog more often about things I learn about. In a native Android app written in Kotlin, I have a LifecycleService class with below code to send a broadcast: Based on the logcat, the broadcast is being sent. However, below BroadcastReceiver in an Activity doesn’t receive the broadcast, even while it is visible: The […]
Run command automatically after updating a file on Mac
I get a kick out of automating things! Especially those seemingly easy extra steps that we do numerous times a day, everyday. There’s this configuration file that I frequently have to adb push into my test Android devices. And the cycle of editing the file, saving it, and then going to the terminal to run […]
Make a RecyclerView expand its height when new item is added //Android Dev Diary
It seems that simply using android:layout_height=”wrap_content” on your RecyclerView won’t make its height automatically expand when new items are added in it.
How to start using view binding //Android Kotlin Dev Diary
First, open your app/build.gradle file Inside the android{} block of app/build.gradle, add the following: buildFeatures { viewBinding = true } Sync project with gradle files. In your activity or fragment, define the following class-wide property:
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private lateinit var binding: <strong>FragmentorActivityNameBinding</strong> |
Replace the FragmentorActivityNameBinding above with the appropriate binding class name. Tip: The binding class name is based on the […]
Disable animations programmatically during instrumented tests // Android Dev Diary
When running an instrumented Android test, or “androidTest”, and you encounter the following error: It means that you need to disable animations for it to successfully run the test. But, it can take a lot of clicks on the emulator/device screen to get to the developer settings to turn off animations! So, for a quicker […]
Two-way data binding with StateFlow & BindingAdapters //Dev Diary
I created BindingAdapters for an EditText like so: My XML layout element looks like this: And in my ViewModel, the inputAmount is set up this way:
Fix coroutine error: Cannot access database on the main thread // Android Dev Diary
As I was running a test for a ViewModel function, I encountered the following error: […] Main Thread @coroutine java.lang.IllegalStateException: Cannot access database on the main thread since it may potentially lock the UI for a long period of time. I think it may be caused by the viewModelScope from viewModelScope.launch {} being used by […]
Grant, revoke permissions via Android Studio Terminal (ADB Shell) // Android Dev Diary
To grant and revoke permissions via Terminal (ADB Shell), run your app on an emulator (I haven’t personally tried on a device but it should work there too). Open your Terminal, and then enter the following command: adb shell Once you’re in, you may use the following syntax for granting or revoking your Android device’s […]