Setup Google Sheets API for Android (Java/Kotlin)

Read/write cell values
Read/update spreadsheet properties (e.g. frozen column, protected cells, cell format, etc.)

Although it is recommended that G Suite APIs are called from a server using server-side authentication, these APIs can also be called using the Android SDK.

Note: It is highly recommended to call G Suite APIs from a server environment rather than a mobile environment.

Source

Dependencies

dependencies {
    implementation 'com.google.android.gms:play-services-auth:16.0.1'

    // https://developers.google.com/gsuite/guides/android
    // https://mvnrepository.com/artifact/com.google.api-client/google-api-client-android
    implementation('com.google.api-client:google-api-client-android:1.28.0') {
        exclude group: 'org.apache.httpcomponents'
        exclude module: 'guava-jdk5'
    }
    // https://mvnrepository.com/artifact/com.google.apis/google-api-services-sheets
    implementation('com.google.apis:google-api-services-sheets:v4-rev571-1.25.0') {
        exclude group: 'org.apache.httpcomponents'
        exclude module: 'guava-jdk5'
    }
}

NOTE: If you bump into Error: Program type already present: com.google.common.annotations.GwtCompatible, you need exclude module: 'guava-jdk5'.

Google Cloud Platform Project and Enable API

You need to create a new or use existing Google Cloud Platform project.

Enable Sheets API in API Library.

Make sure Credential - OAuth 2.0 client IDs contain an entry with

Application type (Android)
Package name (refer to applicationId in Module:app build.gradle)
Signing-certificate fingerprint (SHA1 - refer to Get SHA-1 Fingerprint Of Keystore Certificate (*.jks for Windows)).

Sometimes this entry is auto created by Google Service. If the entry does not exist, you need to create an entry.

NOTE: Refer to Connecting and Authorizing the Google Drive Android API.

Code

The following sample will

Sign-in to request Google Sheets permission
Create a new Spreadsheet
Utilize kotlin coroutines to launch job in background thread
User Timber to log output

class TestSheetsApiActivity : AppCompatActivity(), CoroutineScope by MainScope() {    companion object {        private const val REQUEST_SIGN_IN = 1    }    override fun onCreate(savedInstanceState: Bundle?) {        super.onCreate(savedInstanceState)        setContentView(R.layout.testsheetsapi)        requestSignIn()    }    override fun onDestroy() {        super.onDestroy()        cancel()    }    override fun onActivityResult(requestCode: Int, resultCode: Int, data: Intent?) {        super.onActivityResult(requestCode, resultCode, data)        if (requestCode == REQUEST_SIGN_IN) {            if (resultCode == RESULT_OK) {                GoogleSignIn.getSignedInAccountFromIntent(data)                    .addOnSuccessListener { account ->                        val scopes = listOf(SheetsScopes.SPREADSHEETS)                        val credential = GoogleAccountCredential.usingOAuth2(context, scopes)                        credential.selectedAccount = account.account                        val jsonFactory = JacksonFactory.getDefaultInstance()                        // GoogleNetHttpTransport.newTrustedTransport()                        val httpTransport =  AndroidHttp.newCompatibleTransport()                        val service = Sheets.Builder(httpTransport, jsonFactory, credential)                            .setApplicationName(getString(R.string.app_name))                            .build()                        createSpreadsheet(service)                    }                    .addOnFailureListener { e ->                        Timber.e(e)                    }            }        }    }    private fun requestSignIn(context: Context) {        /*        GoogleSignIn.getLastSignedInAccount(context)?.also { account ->            Timber.d("account=${account.displayName}")        }         */        val signInOptions = GoogleSignInOptions.Builder(GoogleSignInOptions.DEFAULT_SIGN_IN)            // .requestEmail()            // .requestScopes(Scope(SheetsScopes.SPREADSHEETS_READONLY))            .requestScopes(Scope(SheetsScopes.SPREADSHEETS))            .build()        val client = GoogleSignIn.getClient(context, signInOptions)        startActivityForResult(client.signInIntent, REQUEST_SIGN_IN)    }    private fun createSpreadsheet(service: Sheets) {        var spreadsheet = Spreadsheet()            .setProperties(                SpreadsheetProperties()                    .setTitle("CreateNewSpreadsheet")            )        launch(Dispatchers.Default) {            spreadsheet = service.spreadsheets().create(spreadsheet).execute()            Timber.d("ID: ${spreadsheet.spreadsheetId}")        }    }}

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