java.lang.SecurityException:Permission Denial:不允许发送广播android.hardware.usb.action.USB_STATE

Question

我想在设备中安装apk并管理usb状态.

apk向设备发送广播...

Intent intent = new Intent(ACTION_USB_STATE);
sendBroadcast(intent);

在AndroidManifest.xml中,我声明了许可部分..

<uses-permission android:name="android.permission.BROADCAST_STICKY" />

但即使我已经说明了许可,也会出现错误.

日志是......

W/ActivityManager(  850): Permission Denial: not allowed to send broadcast android.hardware.usb.action.USB_STATE from pid=16082, uid=10109
E/AndroidRuntime(16082): FATAL EXCEPTION: main
E/AndroidRuntime(16082): java.lang.SecurityException: Permission Denial: not allowed to send broadcast android.hardware.usb.action.USB_STATE from pid=16082, uid=10109
E/AndroidRuntime(16082):    at android.os.Parcel.readException(Parcel.java:1425)
E/AndroidRuntime(16082):    at android.os.Parcel.readException(Parcel.java:1379)
E/AndroidRuntime(16082):    at android.app.ActivityManagerProxy.broadcastIntent(ActivityManagerNative.java:2098)
E/AndroidRuntime(16082):    at android.app.ContextImpl.sendBroadcast(ContextImpl.java:1003)
E/AndroidRuntime(16082):    at android.content.ContextWrapper.sendBroadcast(ContextWrapper.java:312)
E/AndroidRuntime(16082):    at com.example.usb_mode_change.USBModeSettingActivity$1.onClick(USBModeSettingActivity.java:43)
E/AndroidRuntime(16082):    at android.view.View.performClick(View.java:4101)
E/AndroidRuntime(16082):    at android.view.View$PerformClick.run(View.java:17082)
E/AndroidRuntime(16082):    at android.os.Handler.handleCallback(Handler.java:615)
E/AndroidRuntime(16082):    at android.os.Handler.dispatchMessage(Handler.java:92)
E/AndroidRuntime(16082):    at android.os.Looper.loop(Looper.java:137)
E/AndroidRuntime(16082):    at android.app.ActivityThread.main(ActivityThread.java:4911)
E/AndroidRuntime(16082):    at java.lang.reflect.Method.invokeNative(Native Method)
E/AndroidRuntime(16082):    at java.lang.reflect.Method.invoke(Method.java:511)
E/AndroidRuntime(16082):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
E/AndroidRuntime(16082):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562)
E/AndroidRuntime(16082):    at dalvik.system.NativeStart.main(Native Method)
W/ActivityManager(  850):   Force finishing activity com.example.usb_mode_change/.USBModeSettingActivity

我不知道我做错了什么..

任何线索都会有所帮助.

谢谢.

Answer 1

您可以在framework/base/core/res/AndroidManifest.xml中找到此声明

此广播在此部分中:

  24     <!-- ================================================ -->
  25     <!-- Special broadcasts that only the system can send -->
  26     <!-- ================================================ -->

 106     <protected-broadcast android:name="android.hardware.usb.action.USB_STATE" />

我相信你能理解这一点.您必须生成自己的固件才能广播此意图.