[How-To] Lockscreen Custom Background Settings for JB 4.2 [Dev // Seniors & Users]

[SuperDroid-BOND]

[How-To] Lockscreen Custom Background Settings for JB 4.2 [Dev // Seniors & Users]

Hello Everyone,

This is a thread showing "how-to" for Lock-screen background/wallpaper change option and function in settings. All credits goes to our legendary Sir @Adi Aisiteru Reborn.

Let's move ahead with the guide:-


First decompile your android.policy.jar and go to android.policy.jar.out/smali\com\android\internal\policy\impl\keyguard\ and open "KeyGaurdHostView.smali"

Find this:-

.method private updateSecurityView(Landroid/view/View;)V

just above it paste this:-

.method private updateBackground()V
    .locals 10

    .prologue
    .line 337
    invoke-virtual {p0}, Lcom/android/internal/policy/impl/keyguard/KeyguardHostView;->getContext()Landroid/content/Context;

    move-result-object v7

    invoke-virtual {v7}, Landroid/content/Context;->getContentResolver()Landroid/content/ContentResolver;

    move-result-object v7

    const-string v8, "lockscreen_background"

    const/4 v9, -0x2

    invoke-static {v7, v8, v9}, Landroid/provider/Settings$System;->getStringForUser(Landroid/content/ContentResolver;Ljava/lang/String;I)Ljava/lang/String;

    move-result-object v2

    .line 340
    .local v2, background:Ljava/lang/String;
    if-nez v2, :cond_1

    .line 365
    :cond_0
    :goto_0
    return-void

    .line 344
    :cond_1
    const/4 v0, 0x0

    .line 345
    .local v0, back:Landroid/graphics/drawable/Drawable;
    invoke-virtual {v2}, Ljava/lang/String;->isEmpty()Z

    move-result v7

    if-nez v7, :cond_2

    .line 347
    :try_start_0
    new-instance v1, Landroid/graphics/drawable/ColorDrawable;

    invoke-static {v2}, Ljava/lang/Integer;->parseInt(Ljava/lang/String;)I

    move-result v7

    invoke-direct {v1, v7}, Landroid/graphics/drawable/ColorDrawable;-><init>(I)V
    :try_end_0
    .catch Ljava/lang/NumberFormatException; {:try_start_0 .. :try_end_0} :catch_0

    .end local v0           #back:Landroid/graphics/drawable/Drawable;
    .local v1, back:Landroid/graphics/drawable/Drawable;
    move-object v0, v1

    .line 361
    .end local v1           #back:Landroid/graphics/drawable/Drawable;
    .restart local v0       #back:Landroid/graphics/drawable/Drawable;
    :goto_1
    if-eqz v0, :cond_0

    .line 362
    const/high16 v7, 0x7000

    sget-object v8, Landroid/graphics/PorterDuff$Mode;->SRC_ATOP:Landroid/graphics/PorterDuff$Mode;

    invoke-virtual {v0, v7, v8}, Landroid/graphics/drawable/Drawable;->setColorFilter(ILandroid/graphics/PorterDuff$Mode;)V

    .line 363
    invoke-virtual {p0, v0}, Lcom/android/internal/policy/impl/keyguard/KeyguardHostView;->setBackground(Landroid/graphics/drawable/Drawable;)V

    goto :goto_0

    .line 348
    :catch_0
    move-exception v4

    .line 349
    .local v4, e:Ljava/lang/NumberFormatException;
    const-string v7, "KeyguardHostView"

    new-instance v8, Ljava/lang/StringBuilder;

    invoke-direct {v8}, Ljava/lang/StringBuilder;-><init>()V

    const-string v9, "Invalid background color "

    invoke-virtual {v8, v9}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    move-result-object v8

    invoke-virtual {v8, v2}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    move-result-object v8

    invoke-virtual {v8}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object v8

    invoke-static {v7, v8}, Landroid/util/Log;->e(Ljava/lang/String;Ljava/lang/String;)I

    goto :goto_1

    .line 353
    .end local v4           #e:Ljava/lang/NumberFormatException;
    :cond_2
    :try_start_1
    invoke-virtual {p0}, Lcom/android/internal/policy/impl/keyguard/KeyguardHostView;->getContext()Landroid/content/Context;

    move-result-object v7

    const-string v8, "com.android.settings"

    const/4 v9, 0x0

    invoke-virtual {v7, v8, v9}, Landroid/content/Context;->createPackageContext(Ljava/lang/String;I)Landroid/content/Context;

    move-result-object v5

    .line 354
    .local v5, settingsContext:Landroid/content/Context;
    new-instance v7, Ljava/lang/StringBuilder;

    invoke-direct {v7}, Ljava/lang/StringBuilder;-><init>()V

    invoke-virtual {v5}, Landroid/content/Context;->getFilesDir()Ljava/io/File;

    move-result-object v8

    invoke-virtual {v7, v8}, Ljava/lang/StringBuilder;->append(Ljava/lang/Object;)Ljava/lang/StringBuilder;

    move-result-object v7

    const-string v8, "/lockwallpaper"

    invoke-virtual {v7, v8}, Ljava/lang/StringBuilder;->append(Ljava/lang/String;)Ljava/lang/StringBuilder;

    move-result-object v7

    invoke-virtual {v7}, Ljava/lang/StringBuilder;->toString()Ljava/lang/String;

    move-result-object v6

    .line 355
    .local v6, wallpaperFile:Ljava/lang/String;
    invoke-static {v6}, Landroid/graphics/BitmapFactory;->decodeFile(Ljava/lang/String;)Landroid/graphics/Bitmap;

    move-result-object v3

    .line 356
    .local v3, backgroundBitmap:Landroid/graphics/Bitmap;
    new-instance v1, Landroid/graphics/drawable/BitmapDrawable;

    invoke-virtual {p0}, Lcom/android/internal/policy/impl/keyguard/KeyguardHostView;->getContext()Landroid/content/Context;

    move-result-object v7

    invoke-virtual {v7}, Landroid/content/Context;->getResources()Landroid/content/res/Resources;

    move-result-object v7

    invoke-direct {v1, v7, v3}, Landroid/graphics/drawable/BitmapDrawable;-><init>(Landroid/content/res/Resources;Landroid/graphics/Bitmap;)V
    :try_end_1
    .catch Landroid/content/pm/PackageManager$NameNotFoundException; {:try_start_1 .. :try_end_1} :catch_1

    .end local v0           #back:Landroid/graphics/drawable/Drawable;
    .restart local v1       #back:Landroid/graphics/drawable/Drawable;
    move-object v0, v1

    .line 359
    .end local v1           #back:Landroid/graphics/drawable/Drawable;
    .restart local v0       #back:Landroid/graphics/drawable/Drawable;
    goto :goto_1

    .line 357
    .end local v3           #backgroundBitmap:Landroid/graphics/Bitmap;
    .end local v5           #settingsContext:Landroid/content/Context;
    .end local v6           #wallpaperFile:Ljava/lang/String;
    :catch_1
    move-exception v7

    goto :goto_1
.end method

Now Find this line :-

    invoke-direct {p0}, Lcom/android/internal/policy/impl/keyguard/KeyguardHostView;->addDefaultWidgets()V

Just Above this line, add this-

    .line 301
    :cond_[COLOR=Red]2[/COLOR]
    invoke-direct {p0}, Lcom/android/internal/policy/impl/keyguard/KeyguardHostView;->updateBackground()V

(Please make sure you have to get correct condition number. You have to understand yourself or better please add the KeygaurdHostView.smali here, so that I can mod it in my free time).

Done and now recompile android.policy.jar and keep aside.

Now Decompile Settings.apk. and extract the file attached in the post.

Go to Settings.apk/res/xml/ and open "display_settings.xml" and paste this line:-

    <PreferenceScreen android:id="@id/lockscreen_background" android:title="@string/lockscreen_background_title" android:summary="@string/lock_panel_bond" android:fragment="com.android.settings.cyanogenmod.LockscreenInterface" />

Now open values folder and open "strings.xml"
And add this-

    <string name="lockscreen_widgets_category_title">Widgets</string>
    <string name="lockscreen_maximize_widgets_title">Maximize widgets</string>
    <string name="lockscreen_maximize_widgets_summary">Show widgets maximized and the unlock minimized when the screen is turned on</string>
    <string name="lockscreen_enable_widgets_title">Widget pager</string>
    <string name="lockscreen_enable_widgets_summary">Allow multiple widget pages to be added and selected</string>
    <string name="lockscreen_enable_camera_title">Camera widget</string>
    <string name="lockscreen_enable_camera_summary">Show the camera widget to the right of the unlock screen</string>
    <string name="lockscreen_music_controls_title">Music controls</string>
    <string name="lockscreen_music_controls_summary">Show player controls while music is playing</string>
    <string name="lockscreen_custom_background_title">Background</string>
    <string name="lockscreen_custom_background_dialog_title">Choose color</string>
    <string name="lockscreen_background_result_successful">Background changed successfully</string>
    <string name="lockscreen_background_result_not_successful">Background could not be changed</string>
    <string name="lockscreen_background_color_fill">Color fill</string>
    <string name="lockscreen_background_custom_image">Custom image</string>
    <string name="lockscreen_background_default_wallpaper">Default wallpaper</string>
    <string name="lockscreen_background_title">Lockscreen Background</string>
    <string name="lock_panel_bond">Change Your Lockscreen Background</string>

Now Save it and Open "ids.xml" and paste this at the bottom of the file.

    <item type="id" name="lockscreen_background">false</item>

Now Open "arrays.xml" and paste this at the bottom:-

    <string-array name="lockscreen_background_entries">
        <item>@string/lockscreen_background_color_fill</item>
        <item>@string/lockscreen_background_custom_image</item>
        <item>@string/lockscreen_background_default_wallpaper</item>
    </string-array>
    <string-array name="lockscreen_background_values">
        <item>0</item>
        <item>1</item>
        <item>2</item>
    </string-array>
    <string-array name="lockscreen_battery_status_entries">
        <item>@string/lockscreen_battery_status_charging</item>
        <item>@string/lockscreen_battery_status_alwayson</item>
    </string-array>
    <string-array name="lockscreen_battery_status_values">
        <item>0</item>
        <item>1</item>
    </string-array>

Now recompile Settings and then decompile the newly made settings to get the IDs in public.xml.

Now comes the main part where you have to find the IDs in the files you just pasted in your decompiled settings and start changing those with your new IDs.

First open smali/com/android/settings/cyanogenmod/LockscreenInterface.smali

    Line 120:     const v14, 0x7f0c09f7 -[B]<public type="string" name="lockscreen_custom_background_dialog_title" 

[/B]     Line 126:     const v14, 0x7f0c0089 -[B]<public type="string" name="ok"[/B]

    Line 138:     const v14, 0x7f0c0355 -[B]<public type="string" name="cancel"[/B]

    Line 485:     const v0, 0x7f0c09fc -[B]<public type="string" name="lockscreen_background_default_wallpaper"[/B]

    Line 522:     const v0, 0x7f0c09fb -[B]<public type="string" name="lockscreen_background_custom_image"[/B]

    Line 537:     const v0, 0x7f0c09fa -[B]<public type="string" name="lockscreen_background_color_fill"[/B]

    Line 666:     const v0, 0x7f0c09f8 -[B]<public type="string" name="lockscreen_background_result_successful"[/B]

    Line 727:     const v0, 0x7f0c09f9 -[B]<public type="string" name="lockscreen_background_result_not_successful"[/B]

    Line 748:     const v4, 0x7f060057 - [B]<public type="xml" name="lockscreen_interface_settings"[/B]

The line numbers mentioned here are the actual line number where the ID is.

Now recompile back your Settings.apk and make a flashable zip of both of your modded files and flash through recovery.

Please do let me know if something wrong his happening. This is only for Dev and for users who earlier have done other MODs, but not for newbies.

Screenshots of results are attached below.

Do give your feedback and suggestions about the guide for improvements. Special Thanks to Dev Brother @Akhilendra Gadde for finding my missing lines from my original files. Don't forget to thank him few post below.

 

[SuperDroid-BOND]

Reserved for Future References

Reserved for future references

 

[pavan kr]

Sir thanks for the guide...but no KeyGaurdHostView.smali in 4.1 :crying: soon i will try in 4.2 rom anyway thanks :good:

 

[SuperDroid-BOND]

Sir thanks for the guide...but no KeyGaurdHostView.smali in 4.1 :crying: soon i will try in 4.2 rom anyway thanks :good:

Brother,
Let me reach home then I'll add the file name for 4.1.
Thanks for reminding me.

Sent from my A110 using Tapatalk

 

[nightwalker]

Brother,
Let me reach home then I'll add the file name for 4.1.
Thanks for reminding me.

Sent from my A110 using Tapatalk

Amazing guide bro!
I am really happy to see that guides are coming for 4.2
Thanks a lot bro for your contribution.

 

[Akhilendra Gadde]

Awesome job brother . Keep 'em coming :good:

Sent from my A110 using XDA Premium HD app

 

[SuperDroid-BOND]

Brothers

Thread is update with the method for 4.1 also. Thanks for your supports brothers.

 

[Akhilendra Gadde]

Brothers

Thread is update with the method for 4.1 also. Thanks for your supports brothers.

Brother some changes are needed in strings( 2 files need to be added ) , XML ( strings should be edited )


Sent from my A110 using XDA Premium HD app

 

[Adi Aisiteru Reborn]

what I did Bond brother ?.. you written my name ..hahaha..

btw great work as always dear my frend Bond :good:

 

[christian devs01]

no luck

i complete the tutorial but nothing change
i change lockscreen to color fill nothing happen even the custom image

 

[christian devs01]

please

sir can you check my android.policy.jar sir
i select lockscreen background from gallery then crop but nothing change in my lockscreen
i'm using stock myphone a919i rom/mmx a116

 

[SuperDroid-BOND]

i complete the tutorial but nothing change
i change lockscreen to color fill nothing happen even the custom image

sir can you check my android.policy.jar sir
i select lockscreen background from gallery then crop but nothing change in my lockscreen
i'm using stock myphone a919i rom/mmx a116

Dear brother,
Can you please upload your Settings.apk, Framework-res.apk, and android.policy.jar.
I'll mod that for you.


Sent from my A110 using Tapatalk

 

[pavan kr]

sir when i click Lockscreen Background i'm getting settings fc i'm using JB 4.1.1 mt6577

here is my logcat....

i'm not a senior:crying:

 

[christian devs01]

thank you sir

thank you very much sir i send the file link via pm sir

 

[lacoursiere18]

sir when i click Lockscreen Background i'm getting settings fc i'm using JB 4.1.1 mt6577

here is my logcat....

i'm not a senior:crying:

This is most likely do to you not adding the class that it is searching for.. did you add the smali?
In display_seetings.xml you are calling android:fragment="com.android.settings.cyanogenmod.LockscreenInterface"

In the rar file below it contains that smali and remember you need to change the ids as well

Sent from my SCH-I605 using xda app-developers app

 

[arslanejaz33]

Thank u sir u solved my problem

 

[SuperDroid-BOND]

Please Pardon me and Re-Try from Beginning


Dear All Brothers,

I am confirming that earlier there was some mistakes in the guide and some lines were missing. Special Thanks to Brother Dev @Akhilendra Gadde for matching my stock files and modded files and figuring out the mistakes.
Now the guide has been corrected and it will work for sure without any issues and now its only for 4.2 JB as its not working for 4.1. Don't forget to thank brother @Akhilendra Gadde for the support he has given.

 

[christian devs01]

thanks sir

Thanks sir for new lines for keyguardhostview.smali now its working perfectly on my phone
but when i click the custom background/color fill i getting fc . i figure out that there's a missing Folder file smali in
com/android/settings/notificationlight
and some lines in string like:
<string name="screen_security_summary">View or change lock screen security, delay and timeout settings</string>
<string name="screen_security_category">Screen security</string>
<string name="title_general">General</string>
<string name="themes_settings_title">Themes</string>
<string name="screen_security_title">Lock screen</string>
<string name="lockscreen_vibrate_enabled_title">Vibrate</string>
<string name="lockscreen_vibrate_enabled_head">Vibrate when unlocking</string>
<string name="lockscreen_battery_status_title">Battery status</string>
<string name="lockscreen_battery_status_charging">Only when charging</string>
<string name="lockscreen_battery_status_alwayson">Always on</string>

now i already fix it thankl to the guide sir ))))) i dont know if the missing files is on my settings.apk
great guide sir

 

[wahyupct]

Thank you Work it now but i have to add many strings in settings and when add the second lines i didn't copy all lines...just invoke-direct {p0}, Lcom/android/internal/policy/impl/keyguard/KeyguardHostView;->updateBackground()V..

 

[akbar_jak]

Thank you Work it now but i have to add many strings in settings and when add the second lines i didn't copy all lines...just invoke-direct {p0}, Lcom/android/internal/policy/impl/keyguard/KeyguardHostView;->updateBackground()V..

please send android.policy.jar and settings.apk sir.! heee