BetterResult

Easy Android New Activity Result Api Helper with kotlin coroutine

How to

Android Gradle

Step 1. Add the JitPack repository to your build file

Add it in your root build.gradle at the end of repositories:

allprojects {
    repositories {
        ...
        maven { url 'https://jitpack.io' }
    }
}

Step 2. Add the dependency

dependencies {
    implementation 'com.github.moesama:BetterResult:1.0.1'
}

Document

RequestResult

class MainActivity : AppCompatActivity() {
    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        findViewById<View>(R.id.button).setOnClickListener {
            GlobalScope.launch {
                val res = requestResult("pickImage", ActivityResultContracts.OpenDocument(), arrayOf("image/*"))
            }
            ...
        }
    }
}

CreateContract

val contract = createContract<String, String> {
    initent {
        action = YOUR_ACTIVITY_ACTION
    }
    sync { context, input ->
        return "return Something not Null if startActivity is not needed and will return this value as result"
    }
    parse { resultCode, intent ->
        // parse the value to return from resultCode and intent
        if (resultCode == Activity.RESULT_OK) {
            intent?.data?.toString() ?: ""
        } else {
            ""
        }
    }
}

Here's an example for who's parse method need Context：

class App : Application() {
    @SuppressLint("InlinedApi")
    override fun onCreate() {
        super.onCreate()
        appUsageContracts = createContract {
            intent { action = Settings.ACTION_USAGE_ACCESS_SETTINGS }
            sync { context, _ -> if (context.checkAppUsagePermission()) true else null }
            parse { _, _ -> checkAppUsagePermission() }
        }
    }

    companion object {
        lateinit var appUsageContracts: ActivityResultContract<Nothing, Boolean>
            private set
    }
}