FeatureFlagTargetPreparer

public class FeatureFlagTargetPreparer
extends BaseTargetPreparer

java.lang.Object
↳	com.android.tradefed.targetprep.BaseTargetPreparer
	↳	com.android.tradefed.targetprep.FeatureFlagTargetPreparer

Updates the DeviceConfig (feature flags tuned by a remote service).

This can be used to reproduce the state of a device (by dumping all flag values to a file using `adb shell device_config list`) or to bulk enable/disable flags (all-on/all-off testing).

Example usage:

To use for all-on/all-off testing, specify the necessary flag file:
```
--flag-file=flag_file_path
```
To override one or more flags, specify their values (can be combined with flag files):
```
--flag-file=flag_file_path --flag-value=namespace/name=value
```
To use for reversibility testing, specify the all-on file followed by the all-off file, and enable rebooting between the two files:
```
--flag-file=all_on_file_path --flag-file=all_off_file_path --reboot-between-flag-files
       
```

Should be used in combination with DeviceSetup to disable DeviceConfig syncing during the test which could overwrite the changes made by this preparer.

Summary

Public constructors
`FeatureFlagTargetPreparer()`

Public methods
`void`	`setUp(TestInformation testInformation)`
`void`	`tearDown(TestInformation testInformation, Throwable e)`

Public constructors

FeatureFlagTargetPreparer

public FeatureFlagTargetPreparer ()

Public methods

setUp

public void setUp (TestInformation testInformation)

Parameters
`testInformation`	`TestInformation`

Throws
`BuildError`
`DeviceNotAvailableException`
`TargetSetupError`

tearDown

public void tearDown (TestInformation testInformation, 
                Throwable e)

Parameters
`testInformation`	`TestInformation`
`e`	`Throwable`

Throws
`DeviceNotAvailableException`