我正在尝试在 Raspberry Pi 3 上构建并运行 Android Things 项目。已找到文件here https://github.com/brandmooffin/ButtonThings/tree/part-1_led_blink。我通过以太网连接到 Raspberry Pi 3。我将以太网电缆直接从笔记本电脑插入 rPi 并使用互联网共享。然后我使用 adb connect 连接到设备并成功连接。
我在跑步：
Android Studio 3.1.2
Build #AI-173.4720617, built on April 13, 2018
JRE: 1.8.0_152-release-1024-b01 x86_64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
Mac OS X 10.12.6
对 Android Studio 进行了更改，因此我必须更改一些代码。我下载了文件并更新了PeripheralManagerService to PeripheralManager反而。
PeripheralManager pioService = PeripheralManager.getInstance();
当我单击“运行”按钮时，出现以下错误（请记住，我已将以下权限添加到应用程序部分上方的 Android 清单文件中）：
<uses-permission android:name="com.google.android.things.permission.USE_PERIPHERAL_IO"/>
请帮我弄清楚我还缺少什么。谢谢！
06-08 01:43:28.746 3598-3598/? I/zygote: Late-enabling -Xcheck:jni 06-08 01:43:28.993 3598-3598/apps.hackstermia.buttonthings I/MainActivity: Starting ButtonActivity
06-08 01:43:29.013 3598-3598/apps.hackstermia.buttonthings I/MainActivity: Configuring GPIO pins
06-08 01:43:29.017 3598-3598/apps.hackstermia.buttonthings D/AndroidRuntime: Shutting down VM
06-08 01:43:29.028 3598-3598/apps.hackstermia.buttonthings E/AndroidRuntime: FATAL EXCEPTION: main
Process: apps.hackstermia.buttonthings, PID: 3598
java.lang.RuntimeException: Unable to start activity ComponentInfo{apps.hackstermia.buttonthings/apps.hackstermia.buttonthings.MainActivity}: java.lang.SecurityException: Caller lacks required permission com.google.android.things.permission.USE_PERIPHERAL_IO
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2778)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2856)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
Caused by: java.lang.SecurityException: Caller lacks required permission com.google.android.things.permission.USE_PERIPHERAL_IO
at android.os.Parcel.readException(Parcel.java:2005)
at android.os.Parcel.readException(Parcel.java:1951)
at com.google.android.things.pio.IPeripheralManagerClient$Stub$Proxy.GetGpioClient(IPeripheralManagerClient.java:759)
at com.google.android.things.pio.GpioImpl.<init>(GpioImpl.java:50)
at com.google.android.things.pio.PeripheralManager.openGpio(PeripheralManager.java:197)
at apps.hackstermia.buttonthings.MainActivity.onCreate(MainActivity.java:26)
at android.app.Activity.performCreate(Activity.java:7010)
at android.app.Activity.performCreate(Activity.java:7001)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1214)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2731)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2856)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
06-08 01:43:29.047 3598-3598/apps.hackstermia.buttonthings I/Process: Sending signal. PID: 3598 SIG: 9
首先，AndroidManifest 之前应包含以下几行application tag
<uses-permission android:name="com.google.android.things.permission.USE_PERIPHERAL_IO" />
<uses-permission android:name="com.google.android.things.permission.MANAGE_INPUT_DRIVERS" />
然后，如果您通过安装应用程序adb，你应该安装<APK> with -g选项如下 @Devunwired 推荐的here https://stackoverflow.com/a/46452429/4187237
adb install -g <APK>
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