WRITE_EXTERNAL_STORAGE Permission on newer devices

[christopherperry]

When trying to run the sample tests on my Nexus 6P running Android 7.1.2 I get the following RuntimeException:

We need WRITE_EXTERNAL_STORAGE permission for OkReplay. Please add adbOptions { installOptions "-g" } to your build.gradle file.

This option is already in the build.gradle file of the sample.

[felipecsl]

Are you running from the command line or Android Studio?

[christopherperry]

Android Studio, from the test class.

[felipecsl]

Hmm that may be why. Does it work if you run from the command line with ./gradlew connectedAndroidCheck?

[christopherperry]

./gradlew connectedAndroidTest is able to run the tests; however, the tests fail. Perhaps the IdlingResource isn't working correctly?

[felipecsl]

Well that's gonna depend on why it's failing, but that's out of the scope of this issue, it seems. Regarding the original problem, I think it's expected that running from Android Studio doesn't respect adbOptions unfortunately

[athkalia]

It seems to respect the adbOptions for me, as long as you have the permission defined in the AndroidManifest

[niranjani23]

@athkalia I still see the same issue. Were you able to get the test running from Android Studio?

[niranjani23]

@felipecsl I too noticed the error: We need WRITE_EXTERNAL_STORAGE permission for OkReplay. Do you mind updating the readme if the test can be invoked only via command line and not via Android Studio?

[athkalia]

I'll give it another bash over the weekend and update here

[athkalia]

indeed I've tried it once more and it doesn't seem to work, sorry

[athkalia]

Setup is here btw if you want to experiment a bit https://github.com/athkalia/Just-Another-Android-App

[felipecsl]

I've been running usually on API25 emulators with no problems. Are you running on physical devices?

[malachid]

Confirmed that I ran into the same problem trying to run a test against the LG v20 from A.S.

[malachid]

I was able to get past the permission problem by using the GrantPermissionRule.

    @ClassRule
    public static GrantPermissionRule grantPermissionRule = GrantPermissionRule.grant(
        Manifest.permission.WRITE_EXTERNAL_STORAGE
    );

[scottyab]

I'm unable to get past the permissions issue with the GrantPermissionRule. I couldn't use the @ClassRule as the compiler complained about it not being static 😞

@Rule
@JvmField
    public val grantPermissionRule: GrantPermissionRule = GrantPermissionRule.grant(Manifest.permission.WRITE_EXTERNAL_STORAGE)

[malachid]

@scottyab did you put that in a companion object?

[scottyab]

Thanks @malachid 👍 I'd forgotten the need for companion object. The below allows me to run Espresso tests from Android Studio.

companion object {
        @ClassRule
        @JvmField
        val grantPermissionRule: GrantPermissionRule = GrantPermissionRule.grant(Manifest.permission.WRITE_EXTERNAL_STORAGE)
    }

[cbuche]

After going in circles for the better part of a day, I've found that I need the following tools value in order for the GrantPermissionRule to work (in addition to the @ClassRule annotation)

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" tools:remove="android:maxSdkVersion"/>

[ddudek]

After going in circles despite above suggestions, using ClassRule in companion object worked, but this gave me a hint that it's an rules ordering issue so also this approach below works using just RuleChain and regular @Rule annotation:

    var permissionRule: GrantPermissionRule = GrantPermissionRule.grant(Manifest.permission.WRITE_EXTERNAL_STORAGE)
    var activityTestRule = ActivityTestRule(ExampleActivity::class.java, false, false)
    val okReplayRule: TestRule = OkReplayRuleChain(configuration, activityTestRule).get()

    @Rule
    @JvmField
    val ruleChain: RuleChain = RuleChain.outerRule(activityTestRule).around(permissionRule).around(okReplayRule)