[GUIDE] Locking contacts/sms apps in memory on JB/cm10 (technical / baksmali way)

espaciosalter20 · Sep 19, 2012

Hi everyone!

kanpurite made a great job giving us the easy way to locking apps in memory in this thread.

But, as i told in http://forum.xda-developers.com/showpost.php?p=31627356&postcount=23 there is other, a little bit harder, but still it can be done.

Requirements:

A Pc (this guide is made over Windows, but may work on linux as well)
notepad++
baksmali/smali tools (attached at this thread)
root explorer (or any file explorer with root capabilities)

Here is a step by step guide to do it:

1. Extract baksmali tools to a new folder

2. Extract services.jar from your phone (at /system/framework) and copy to your baksmali folder

3. Run baksmali manager.bat

4. select option 4 (select file to work), then select services.jar

5. select option 1 (baksmali) and wait (CAUTION: DON'T CLOSE THE BAKSMALI MANAGER WINDOW)

6. Go to your baksmali folder, there must be a new folder named "services"

7. enter to services folder and go to this sub-folder

Code:

\com\android\server\am

8. open ActivityManagerService.smali with notepad++

9. search for ".line 13892" and add the following after "if-lez v10, :cond_2af":

Code:

iget-object v2, v0, Lcom/android/server/am/ProcessRecord;->processName:Ljava/lang/String;

    const-string v5, "com.android.contacts"

    invoke-virtual {v2, v5}, Ljava/lang/String;->equals(Ljava/lang/Object;)Z

    move-result v2

    if-nez v2, :cond_2b4

    move-object/from16 v0, p1

    iget-object v2, v0, Lcom/android/server/am/ProcessRecord;->processName:Ljava/lang/String;

    const-string v5, "com.android.mms"

    invoke-virtual {v2, v5}, Ljava/lang/String;->equals(Ljava/lang/Object;)Z

    move-result v2

    if-eqz v2, :cond_2bf

    .line 13894
    :cond_2b4
    const/4 v11, 0x0

(NOTE: You can change to any app you want, just give the proper name of the app process....)

10. add the following:

Code:

.line 13895
    .end local v11           #adj:I
    .end local v34           #schedGroup:I
    :cond_2bf

11. change the subsequent numbers of ".line" (including the old .line 13895) like this:

Code:

.line 13896
    move/from16 v11, p2

.line 13897
    .restart local v11       #adj:I
    const/16 v34, 0x0

    .line 13898
    .restart local v34       #schedGroup:I
    const/4 v2, 0x1

    move-object/from16 v0, p1

    iput-boolean v2, v0, Lcom/android/server/am/ProcessRecord;->hidden:Z

    .line 13899
    const-string v2, "bg-activities"

    move-object/from16 v0, p1

    iput-object v2, v0, Lcom/android/server/am/ProcessRecord;->adjType:Ljava/lang/String;

    goto/16 :goto_f1

12. Save the file.

13. Go to the baksmali manager window and select option 2 (smali) and wait, it will create a classes.dex file on your baksmali folder

14. Open up services.jar with 7zip or WinRAR and drag the newly created classes.dex into the window to refresh services.jar with the new
classes.dex

15. Copy the new services.jar file to your sdcard and from there, copy to /system/framework (use root explorer, mount read/write and copy the
file).

16. set proper permissions: set 644 permissions ((rw-r--r--) or (tick Read: owner, group, others / Write: owner)

17. Restart, make a wipe dalvik and cache and

18. Enjoy!

meilbox · Sep 17, 2012

thx... but why not just upload a baked/moded ver of services.jar... it would be much easier just to replace this specific file ;p as i assume u did for youreself ;p

espaciosalter20 · Sep 17, 2012 at 2:33 AM

meilbox said:
thx... but why not just upload a baked/moded ver of services.jar... it would be much easier just to replace this specific file ;p as i assume u did for youreself ;p

I could do it, but I do prefer to share knowledge with everyone... I could upload a services.jar but it's more fun to learn new things.

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vaibhav palande · Sep 17, 2012 at 3:38 AM

i dont have line 10429..

This is what is in my services.jar (Latest Build):

.line 10420
:cond_167
const/16 v48, 0x0

.line 10421
.local v48, mi:Landroid/os/Debug$MemoryInfo;
if-eqz v38, :cond_22a

.line 10423
:try_start_16b
move-object/from16 v0, v61

iget-object v5, v0, Lcom/android/server/am/ProcessRecord;->thread:Landroid/app/IApplicationThread;

move-object/from16 v0, p1

move/from16 v1, v43

move/from16 v2, v38

move-object/from16 v3, v42

invoke-interface {v5, v0, v1, v2, v3}, Landroid/app/IApplicationThread;->dumpMemInfo(Ljava/io/FileDescriptor;ZZ[Ljava/lang/StringLandroid/os/Debug$MemoryInfo;
:try_end_17a
.catch Landroid/os/RemoteException; {:try_start_16b .. :try_end_17a} :catch_21b

move-result-object v48

.line 10435
:cond_17b
:goto_17b
if-nez v43, :cond_26b

if-eqz v48, :cond_26b

.line 10436
invoke-virtual/range {v48 .. v48}, Landroid/os/Debug$MemoryInfo;->getTotalPss()I

move-result v5

int-to-long v7, v5

.line 10437
.local v7, myTotalPss:J
add-long v68, v68, v7

espaciosalter20 · Sep 17, 2012 at 1:06 PM

vaibhav palande said:
i dont have line 10429..

This is what is in my services.jar (Latest Build):

I'm not talking about ".line" on the code, I'm talking about the number of the line in the document. On notepad++ look at the numbers at the most left and you will find line 10429 with no problem

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vaibhav palande · Sep 17, 2012 at 1:24 PM

Should i add here?

SO Should i add the code u gave above in line 10429 in the pic??

This is my services.jar:

espaciosalter20 · Sep 17, 2012 at 1:53 PM

vaibhav palande said:
SO Should i add the code u gave above in line 10429 in the pic??

This is my services.jar:

Ummm... Weird it's send that I have to polish my guide... I'm using last version of quarx too but my code it's aligned different. Don't add the code in that line cause could break all the code. Please, wait a little bit for me to be on my pc to check what is wrong...

Enviado desde mi MB525 usando Tapatalk 2

vaibhav palande · Sep 17, 2012 at 2:00 PM

espaciosalter20 said:
Ummm... Weird it's send that I have to polish my guide... I'm using last version of quarx too but my code it's aligned different. Don't add the code in that line cause could break all the code. Please, wait a little bit for me to be on my pc to check what is wrong...

Enviado desde mi MB525 usando Tapatalk 2

I am using latest build 09-12.. U have latest build? or u want me to send u services.jar?

espaciosalter20 · Sep 17, 2012 at 3:25 PM

vaibhav palande said:
I am using latest build 09-12.. U have latest build? or u want me to send u services.jar?

ok, it was my bad... i was using an old services.jar as reference. I double check again that and the right code is:

Code:

iget-object v2, v0, Lcom/android/server/am/ProcessRecord;->processName:Ljava/lang/String;

    const-string v5, "com.android.contacts"

    invoke-virtual {v2, v5}, Ljava/lang/String;->equals(Ljava/lang/Object;)Z

    move-result v2

    if-nez v2, :cond_2b4

    move-object/from16 v0, p1

    iget-object v2, v0, Lcom/android/server/am/ProcessRecord;->processName:Ljava/lang/String;

    const-string v5, "com.android.mms"

    invoke-virtual {v2, v5}, Ljava/lang/String;->equals(Ljava/lang/Object;)Z

    move-result v2

    if-eqz v2, :cond_2bf

    .line 13894
    :cond_2b4
    const/4 v11, 0x0

after this part:

Code:

[SIZE="5"][COLOR="Red"].line 13892[/COLOR][/SIZE]
    .end local v11           #adj:I
    .end local v34           #schedGroup:I
    :cond_29c
    if-lez v10, :cond_2af

.line 13892, it's the key....

vaibhav palande · Sep 17, 2012 at 3:34 PM

espaciosalter20 said:

ok, it was my bad... i was using an old services.jar as reference. I double check again that and the right code is:

Code:

iget-object v2, v0, Lcom/android/server/am/ProcessRecord;->processName:Ljava/lang/String;

    const-string v5, "com.android.contacts"

    invoke-virtual {v2, v5}, Ljava/lang/String;->equals(Ljava/lang/Object;)Z

    move-result v2

    if-nez v2, :cond_2b4

    move-object/from16 v0, p1

    iget-object v2, v0, Lcom/android/server/am/ProcessRecord;->processName:Ljava/lang/String;

    const-string v5, "com.android.mms"

    invoke-virtual {v2, v5}, Ljava/lang/String;->equals(Ljava/lang/Object;)Z

    move-result v2

    if-eqz v2, :cond_2bf

    .line 13894
    :cond_2b4
    const/4 v11, 0x0

after this part:

Code:

[SIZE="5"][COLOR="Red"].line 13892[/COLOR][/SIZE]
    .end local v11           #adj:I
    .end local v34           #schedGroup:I
    :cond_29c
    if-lez v10, :cond_2af

.line 13892, it's the key....

So, where should i add this code? Which line?

espaciosalter20 · Sep 17, 2012 at 3:46 PM

vaibhav palande said:
So, where should i add this code? Which line?

I updated OP... Check in there

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vaibhav palande · Sep 17, 2012 at 4:12 PM

espaciosalter20 said:
I updated OP... Check in there

Enviado desde mi MB525 usando Tapatalk 2

If i want to add some more apps, which part of the code needs to be repeated for new app?? Because difference in the upper part and lower part of code is highlighted with red color below and in the lower part green colored part is absent.. otherwise the code is same..

Code:

iget-object v2, v0, Lcom/android/server/am/ProcessRecord;->processName:Ljava/lang/String;

    const-string v5, "com.android.contacts"

    invoke-virtual {v2, v5}, Ljava/lang/String;->equals(Ljava/lang/Object;)Z

    move-result v2

    if-[COLOR="red"]nez[/COLOR] v2, :cond_2b[COLOR="red"]4[/COLOR]

    [COLOR="Lime"]move-object/from16 v0, p1[/COLOR]

    iget-object v2, v0, Lcom/android/server/am/ProcessRecord;->processName:Ljava/lang/String;

    const-string v5, "com.android.mms"

    invoke-virtual {v2, v5}, Ljava/lang/String;->equals(Ljava/lang/Object;)Z

    move-result v2

    if-[COLOR="red"]eqz[/COLOR] v2, :cond_2b[COLOR="red"]f[/COLOR]

    .line 13894
    :cond_2b4
    const/4 v11, 0x0

vaibhav palande · Sep 17, 2012 at 7:39 PM

Problem doing smali

Here is the problem i am getting while doing smali:

espaciosalter20 · Sep 18, 2012

vaibhav palande said:
Here is the problem i am getting while doing smali:

OP UPDATED

add the following:

Code:

.line 13895
    .end local v11           #adj:I
    .end local v34           #schedGroup:I
    :cond_2bf
    if-lez v10, :cond_2d2

and change the subsequent numbers of ".line" (including the old .line 13895) like this:

Code:

.line 13896
    move/from16 v11, p2

.line 13897
    .restart local v11       #adj:I
    const/16 v34, 0x0

    .line 13898
    .restart local v34       #schedGroup:I
    const/4 v2, 0x1

    move-object/from16 v0, p1

    iput-boolean v2, v0, Lcom/android/server/am/ProcessRecord;->hidden:Z

    .line 13899
    const-string v2, "bg-activities"

    move-object/from16 v0, p1

    iput-object v2, v0, Lcom/android/server/am/ProcessRecord;->adjType:Ljava/lang/String;

    goto/16 :goto_f1

vaibhav palande · Sep 18, 2012 at 3:43 AM

espaciosalter20 said:

add the following:

Code:

.line 13895
    .end local v11           #adj:I
    .end local v34           #schedGroup:I
    :cond_2bf
    if-lez v10, :cond_2d2

and change the subsequent numbers of ".line" (including the old .line 13895) like this:

Code:

.line 13896
    move/from16 v11, p2

.line 13897
    .restart local v11       #adj:I
    const/16 v34, 0x0

    .line 13898
    .restart local v34       #schedGroup:I
    const/4 v2, 0x1

    move-object/from16 v0, p1

    iput-boolean v2, v0, Lcom/android/server/am/ProcessRecord;->hidden:Z

    .line 13899
    const-string v2, "bg-activities"

    move-object/from16 v0, p1

    iput-object v2, v0, Lcom/android/server/am/ProcessRecord;->adjType:Ljava/lang/String;

    goto/16 :goto_f1

What about this? Sorry for so many questions but i really don't know a thing about smali files. I just learned one or 2 things by reading it here on xda..

espaciosalter20 · Sep 18, 2012 at 4:10 AM

vaibhav palande said:
What about this? Sorry for so many questions but i really don't know a thing about smali files. I just learned one or 2 things by reading it here on xda..

it's for resolve the problem that you commented earlier.... i do gave you the code in which i defined "cond_2b4" variable to be readed in the smali, but i forgot to give you the define of "cond_2bf" variable... this is what you have to do in order to make the variable work properly and avoid the error in compile the service.jar again

vaibhav palande · Sep 18, 2012

I mean what about the question below..

vaibhav palande said:
If i want to add some more apps, which part of the code needs to be repeated for new app?? Because there is some in upper and lower part of code.. difference in the upper part and lower part of code is highlighted with red color below and the text in green color is absent in lower part.. So little confused about which part of code to be repeated for locking more apps in memory... otherwise the code is same..

Code:

iget-object v2, v0, Lcom/android/server/am/ProcessRecord;->processName:Ljava/lang/String; const-string v5, "com.android.contacts" invoke-virtual {v2, v5}, Ljava/lang/String;->equals(Ljava/lang/Object;)Z move-result v2 if-[COLOR="red"]nez[/COLOR] v2, :cond_2b[COLOR="red"]4[/COLOR] [COLOR="Lime"]move-object/from16 v0, p1[/COLOR] iget-object v2, v0, Lcom/android/server/am/ProcessRecord;->processName:Ljava/lang/String; const-string v5, "com.android.mms" invoke-virtual {v2, v5}, Ljava/lang/String;->equals(Ljava/lang/Object;)Z move-result v2 if-[COLOR="red"]eqz[/COLOR] v2, :cond_2b[COLOR="red"]f[/COLOR] .line 13894 :cond_2b4 const/4 v11, 0x0

vaibhav palande · Sep 19, 2012 at 6:18 PM

espaciosalter20 said:
it's for resolve the problem that you commented earlier.... i do gave you the code in which i defined "cond_2b4" variable to be readed in the smali, but i forgot to give you the define of "cond_2bf" variable... this is what you have to do in order to make the variable work properly and avoid the error in compile the service.jar again

This is not working.. :crying:

I get this error while doing smali:

ppero196 · Sep 19, 2012 at 8:50 PM

Easier version?
http://forum.xda-developers.com/showthread.php?t=1889300

Sent from my MB525 using xda app-developers app

espaciosalter20 · Sep 19, 2012 at 9:55 PM

vaibhav palande said:
This is not working.. :crying:

I get this error while doing smali:

delete "if-lez v10, :cond_2d2"

[GUIDE] Locking contacts/sms apps in memory on JB/cm10 (technical / baksmali way)

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