【发布时间】：2019-05-23 01:24:45
【问题描述】：
我正在编写一个测试类，我正在尝试使用规则GrantPermissionRule 授予权限：
@Rule
public GrantPermissionRule permissionsRule = GrantPermissionRule.grant(
Manifest.permission.READ_EXTERNAL_STORAGE,
Manifest.permission.WRITE_EXTERNAL_STORAGE);
但我在测试执行开始时收到以下错误：
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:128)
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 android.support.test.runner.AndroidJUnit4.run(AndroidJUnit4.java:101)
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$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
at org.junit.runner.JUnitCore.run(JUnitCore.java:115)
at android.support.test.internal.runner.TestExecutor.execute(TestExecutor.java:56)
at android.support.test.runner.AndroidJUnitRunner.onStart(AndroidJUnitRunner.java:384)
at android.app.Instrumentation$InstrumentationThread.run(Instrumentation.java:1886)
这是 logcat 输出（仅限错误）：
12-23 13:03:21.196 13242-13242/? E/dex2oat: Failed to create oat file: /data/dalvik-cache/arm/data@data@com.google.android.gms@app_chimera@m@00000088@DynamiteLoader.apk@classes.dex: Permission denied
12-23 13:03:21.721 13306-13306/? E/dex2oat: Failed to create oat file: /data/dalvik-cache/arm/data@data@com.google.android.gms@app_chimera@m@0000008a@DynamiteModulesC.apk@classes.dex: Permission denied
12-23 13:03:22.361 13328-13328/? E/dex2oat: Failed to create oat file: /data/dalvik-cache/arm/data@data@com.google.android.gms@app_chimera@m@00000086@AdsDynamite.apk@classes.dex: Permission denied
12-23 13:03:26.303 13436-13467/my.app.package E/GrantPermissionCallable: Permission: android.permission.READ_EXTERNAL_STORAGE cannot be granted!
但这似乎只发生在我的 Android 6.0.1 的 Redmi 4 中。但是在带有 6.0.1 的三星 Galaxy Tab S 中它可以工作，在某些模拟器中也是如此......
我错过了什么？
【问题讨论】：
-
即兴发挥，这似乎是该特定设备中的一个错误。尝试使用
adb shell授予权限，看看是否有效。 AFAIK，这就是GetPermissionRule正在使用的全部内容。
标签： android android-permissions android-testing