权限拒绝：startActivity要求为用户-2运行，但是从用户0调用;这需要android.permission.INTERACT_ACROSS_USERS_FULL [英] Permission Denial: startActivity asks to run as user -2 but is calling from user 0; this requires android.permission.INTERACT_ACROSS_USERS_FULL

问题描述

当我试图使用Android'我'命令来启动一个活动，它是在4.2的平台（我试过了，在2.3版本的确定）.The code是这样的错

When I'm trying to use android 'am' command to start an activity ,it's wrong under 4.2 platform(I tried , it's ok under 2.3 version).The code is like this

out = process.getOutputStream();
out.write(("am start -a android.intent.action.VIEW -n com.android.browser/com.android.browser.BrowserActivity\n").getBytes());
out.flush();

InputStream in = process.getInputStream();
BufferedReader re = new BufferedReader(new InputStreamReader(in));
String line = null;
while((line = re.readLine()) != null) {
    Log.d("conio","[result]"+line);
}

和错误是这样的：

java.lang.SecurityException: Permission Denial: startActivity asks to run as user -2 but is calling from user 0; this requires android.permission.INTERACT_ACROSS_USERS_FULL 
at android.os.Parcel.readException(Parcel.java:1425)                                                                                                                        
at android.os.Parcel.readException(Parcel.java:1379)                                                                                                                        
at android.app.ActivityManagerProxy.startActivityAsUser(ActivityManagerNative.java:1921)                                                                                    
at com.android.commands.am.Am.runStart(Am.java:494)                                                                                                                         
at com.android.commands.am.Am.run(Am.java:109)                                                                                                                              
at com.android.commands.am.Am.main(Am.java:82)                                                                                                                              
at com.android.internal.os.RuntimeInit.nativeFinishInit(Native Method)                                                                                                      
at com.android.internal.os.RuntimeInit.main(RuntimeInit.java:235)                                                                                                           
at dalvik.system.NativeStart.main(Native Method)                                                                                                                            

我想知道

1.什么呢用户-2和0的手段？

1.what does the user -2 and 0 means?

2.where我可以找到有关这些ID的详细信息？

2.where I can find the details about these ids?

3.什么，应该怎么办，只是添加的权限？我不想增加我对此事一无所知them.Could谁能帮我这的权限，非常感谢！

3.what should I do,just add the permissions? I don't want to add the permissions which I know nothing about them.Could anyone help me it,very thanks!

推荐答案

1）在linux下每个用户都有一个ID号。 0和2的用户ID（UID）的。 0是根，-2是一些随机的用户（这可能不是一个人，它可能只是用于内部原因一个假帐户）。

1)In linux every user has an id number. 0 and -2 are User IDs (UIDs). 0 is root, -2 is some random user (which may not be a person, it may just be a fake account used for internal reasons).

2）任何书上的Linux。 Android是基于Linux的只是一个图形化的框架。

2)Any book on Linux. Android is just a graphical framework on top of Linux.

3）是的，只是添加的权限。

3)Yes, just add the permission.

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