GrantPermissionCallable: Permission: android.permission.SET_TIME cannot be granted

问题

I'm trying to use the new GrantPermissionRule that's a part of the latest support library.

In my Manifest I declare the following:

<uses-permission android:name="android.permission.SET_TIME"/>
And in my code I call:

@Rule
public GrantPermissionRule mPermissionRule = GrantPermissionRule.grant(Manifest.permission.SET_TIME);

But when I run the test I see the error:

12-28 14:09:35.063 7193-7215/com.blah.test E/GrantPermissionCallable: Permission: android.permission.SET_TIME cannot be granted!
12-28 14:09:35.066 7193-7215/com.blah I/TestRunner: failed: maxOfflineWithChangingDeviceTime(com.blah)
12-28 14:09:35.066 7193-7215/com.blah I/TestRunner: ----- begin exception -----
12-28 14:09:35.073 7193-7215/com.blah I/TestRunner: junit.framework.AssertionFailedError: Failed to grant permissions, see logcat for details
                                                                              at junit.framework.Assert.fail(Assert.java:50)
                                                                              at android.support.test.runner.permission.PermissionRequester.requestPermissions(PermissionRequester.java:110)
                                                                              at android.support.test.rule.GrantPermissionRule$RequestPermissionStatement.evaluate(GrantPermissionRule.java:108)
                                                                              at org.junit.rules.RunRules.evaluate(RunRules.java:20)
                                                                              at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
                                                                              at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
                                                                              at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
                                                                              at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
                                                                              at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
                                                                              at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
                                                                              at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
                                                                              at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
                                                                              at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
                                                                              at org.junit.runners.Suite.runChild(Suite.java:128)
                                                                              at org.junit.runners.Suite.runChild(Suite.java:27)
                                                                              at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
                                                                              at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
                                                                              at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
                                                                              at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
                                                                              at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
                                                                              at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
                                                                              at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
                                                                              at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
                                                                              at android.support.test.internal.runner.TestExecutor.execute(TestExecutor.java:58)
                                                                              at android.support.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:375)
                                                                              at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1932)
12-28 14:09:35.073 7193-7215/com.blah I/TestRunner: ----- end exception -----

My build.gradle has the following lines updated:

androidTestCompile 'com.android.support.test:runner:1.0.1'
androidTestCompile 'com.android.support.test:rules:1.0.1'
androidTestCompile 'com.android.support.test.espresso:espresso-core:3.0.0'

Any suggestions or solutions?

回答1:

SET_TIME is a signature|privileged-level permission. You cannot request it at runtime, whether using requestPermissions() or GrantPermissionRule.

And, unless you are building your own firmware or are planning on your app being installed by root users on the privileged partition, you may as well remove the <uses-permission> element from the manifest.

来源：https://stackoverflow.com/questions/48013126/grantpermissioncallable-permission-android-permission-set-time-cannot-be-grant