[UiAutomator] Permission denied when taking screen shot.

[dino-su]

Hi,

I presume that with UiAutomator 2.0 the only way to invoke UI testing is using gradle ($ ./gradlew connectedCheck), however it seems like it doesn't have enough privilege to create new file.

03-25 14:48:37.359: E/UiAutomatorBridge(13955): failed to save screen shot to file
03-25 14:48:37.359: E/UiAutomatorBridge(13955): java.io.FileNotFoundException: /data/local/tmp/uiautomator.png: open failed: EACCES (Permission denied)

But if you create the file via adb shell ($ adb shell touch /data/local/tmp/uiautomator.png) first then everything will works fine.

Could you please have a look on the gradle permission issue ?

Thanks,
Dino

[otw]

Thanks for the feedback. Will file a bug on your behalf so we can investigate.

[dino-su]

Hi @otw,

Can you let me know where to track the permission issue ?

Thanks,
Dino

[cataglyphis]

Hi @otw
We use UiAutomator 2.0 to take screenshot, and found this issue again, dependencies as below:

compileSdkVersion 22
buildToolsVersion "25.0.3"
compile 'com.android.support:appcompat-v7:22.2.1'
compile 'com.android.support:support-annotations:23.1.1'

androidTestCompile 'com.android.support.test:runner:0.5'
androidTestCompile 'com.android.support.test:rules:0.5'
androidTestCompile 'com.android.support.test.uiautomator:uiautomator-v18:2.1.2'

Do you have any suggestion to solve this problem, or the higher library has already solved this issue?
Thanks.

[AliceSkilsara]

I have the same problem
E/UiAutomatorBridge: failed to save screen shot to file
java.io.FileNotFoundException: /sdcard/Pictures/Autotests/1502183344782.png (Permission denied)
with settings
buildToolsVersion = "26.0.0"
supportLibVersion = "25.4.0"
runnerVersion = "1.0.0"
rulesVersion = "1.0.0"
espressoVersion = "3.0.0"
uiautomatorVersion = "2.0.0"

[JerryLiu0821]

I have the same problem,
did this issue fixed or not?

Thanks

[AliceSkilsara]

Hi. I found a decision.

1. You should add permissions in AndroidManifest.xml

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

2. Input in console

adb shell pm grant com.example.android.testing.uiautomator.your_app android.permission.READ_EXTERNAL_STORAGE

adb shell pm grant com.example.android.testing.uiautomator.your_app android.permission.WRITE_EXTERNAL_STORAGE
3. And now you can take a screenshot

[gailgou]

Hi. I found a decision.

1. You should add permissions in AndroidManifest.xml

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

1. Input in console

adb shell pm grant com.example.android.testing.uiautomator.your_app android.permission.READ_EXTERNAL_STORAGE

adb shell pm grant com.example.android.testing.uiautomator.your_app android.permission.WRITE_EXTERNAL_STORAGE
3. And now you can take a screenshot

all above i have done .but can't slove the problem

[EmotionalRonan]

Hi. I found a decision.

1. You should add permissions in AndroidManifest.xml

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

1. Input in console

adb shell pm grant com.example.android.testing.uiautomator.your_app android.permission.READ_EXTERNAL_STORAGE
adb shell pm grant com.example.android.testing.uiautomator.your_app android.permission.WRITE_EXTERNAL_STORAGE
3. And now you can take a screenshot

all above i have done .but can't slove the problem

I have the same problem

[VidyaSumanKumar]

do we have a fix for this issue

[brettchabot]

I'd recommend saving the file via TestStorage. Check out the Screenshotsample for an example