Add External Class Folder  adds an external *CLASS* folder and not an 
external *SOURCE *folder.

If you want to add the sources you downloaded to the build path of your 
project you should go to JBP->Sources->Add Folder.
If you want to attach the sources to an existing jar in your buildpath then 
go to JBP->Libraries->Expand your jar->Double Click Source attachment-> 
Pick your sources.....

On Thursday, 13 September 2012 06:50:23 UTC+3, Jin wrote:
>
> Hi, Kris
>
> There may be something wrong with my expression in the previous post. So 
> first let me explain what I have done: I right-click my project, and choose 
> Build Path/Configure Build Path/Add External Class Folder, then imported 
> the download Android source file named as “sources”. So there are two items 
> in Referenced Libraries directory: “Android.jar” and “sources”. The 
> “Android.jar” file is only about 5.3M while “sources” file is about 127M, 
> and I find more .java files in the “sources” which includes the 
> “PackageManagerService.java”. However, in the “sources” directory in 
> Eclipse, I can only see the names of all .java files but cannot open 
> them(By that I mean when I click them, nothing happens).
>
> I guess this is caused by I did not attach sources for the platform 
> distribution. But how to do that? I searched “platform distribution” but 
> still don’t know what it means. Could you please specify?
>
> Actually, I just want to see if I can modify Android’s permission checking 
> mechanism. PackageManagerService class is just where I started to read. And 
> is it true that if I want to implement the modified PackageManagerService, 
> I have to debug the whole source codes(10G)? While if I just want to do 
> some change to ActivityManager/PackageManager(which is in Android.jar), I 
> just need to debug Android.jar?
>
> Thanks very much
>
>
> On Wednesday, September 12, 2012 5:06:21 PM UTC-4, Kristopher Micinski 
> wrote:
>>
>> On Wed, Sep 12, 2012 at 12:20 AM, Jin <[email protected]> wrote: 
>> > Hi 
>> > 
>> > I want to do some modification to PackageManagerService, but now I 
>> cannot 
>> > even view its source code. I downloaded the Android source code and put 
>> it 
>> > into android-sdk/platforms/android-8/sources, however, I can just view 
>> part 
>> > of it. The source code of directories like "com", which 
>> > PackageManagerService belongs to, are not able to see. Meanwhile, if I 
>> put 
>> > the Android source code into SourceInsight, it all shows up. 
>> > 
>> > How could this happen? Please help me. 
>> > 
>> > Thanks 
>> > 
>>
>> What do you mean you "can't view part of it?" 
>>
>> You should be able to attach the source to your Eclipse instance. 
>> Remember that it is important to attach sources for the platform 
>> distribution that you are actually using. 
>>
>> What have you tried?  What errors have you received?  Why do you need 
>> to know this?  If you're modifying the platform, this message belongs 
>> on android-platform, 
>>
>> kris  
>
>

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