我正在尝试使用新的GrantPermissionRule这是最新支持库的一部分。
我在舱单上声明如下：<uses-permission android:name="android.permission.SET_TIME"/>
在我的代码中我打电话给：
@Rule
public GrantPermissionRule mPermissionRule = GrantPermissionRule.grant(Manifest.permission.SET_TIME);
但当我运行测试时，我看到错误：
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 -----
我的build.gradle更新了以下行：
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'
有什么建议或解决办法吗？
最佳答案
SET_TIME是a signature|privileged-level permission。无论使用requestPermissions()还是GrantPermissionRule，都不能在运行时请求它。
而且，除非您正在构建自己的固件，或者计划让根用户在特权分区上安装您的应用程序，否则您也可以从清单中删除<uses-permission>元素。