[TUTORIAL]Xposed module devlopment

dillonr · Aug 19, 2014

Is it possible to call/run another method (of the hooked application) when the application is loaded?
I am using tasker to open up my music playing app (grooveshark) when i enter my car, but i was going to make grooveshark start playing automatically when tasker opens it, so that i do not have to remove my phone from my pockets to start the music.
I would need to call

Code:

com.grooveshark.android.lib.player.AsyncPlayer.play

and pass the argument

Code:

(boolean) true

to hopefully get it to start playing

Any input would be appreciated

Edit:
XposedHelpers.callMethod() looks promising

S0bes · Aug 24, 2014

Hi, I got a question about this thing:

Code:

if (!resparam.packageName.equals("name.of.package"))
		        return;

How can I use it for different packages simultaneously ?
For example, I got this code

Code:

public void handleInitPackageResources(InitPackageResourcesParam resparam) throws Throwable {
	   			
		XSharedPreferences pref = new XSharedPreferences("com.s0bes.checkboxes", "settings");		
		H_on=pref.getBoolean("Disabled_data_icon", false);
		H_data=pref.getBoolean("Data_icon_H", false);
		Fm_speaker=pref.getBoolean("Speaker", false);		
			   
		
		// systemUi
		 if (!resparam.packageName.equals("com.android.systemui"))
		        return;	   
		   if (H_on==true)
	        resparam.res.setReplacement("com.android.systemui", "bool", "show_data_disabled_icon", true);
		  else
		  	resparam.res.setReplacement("com.android.systemui", "bool", "show_data_disabled_icon", false);
		   
		   if (H_data==true){
		        resparam.res.setReplacement("com.android.systemui", "bool", "config_hspa_data_distinguishable", true);
		        resparam.res.setReplacement("com.android.systemui", "bool", "config_hspap_data_distinguishable", true);}
			    else{
			    	resparam.res.setReplacement("com.android.systemui", "bool", "config_hspa_data_distinguishable", false);
			    	resparam.res.setReplacement("com.android.systemui", "bool", "config_hspap_data_distinguishable", false);}
		 
		   
		   //Fmradio 
		   if (!resparam.packageName.equals("com.motorola.android.fmradio"))		    
		        return;	 
		    if (Fm_speaker==true)
	        resparam.res.setReplacement("com.motorola.android.fmradio", "bool", "config_speaker_supported_in_fm_radio", true);
		    else
		    resparam.res.setReplacement("com.motorola.android.fmradio", "bool", "config_speaker_supported_in_fm_radio", false);   
		    
	}

and Fmradio part is not working

UPD:
Solved my problem. Saw how to do it in Gravitybox sources https://github.com/C3C0/GravityBox/blob/master/src/com/ceco/gm2/gravitybox/GravityBox.java

Code:

public void handleInitPackageResources(InitPackageResourcesParam resparam) throws Throwable {

		// if (!resparam.packageName.equals("com.android.systemui"))		
			 XposedSystemUI.initResources(resparam);
			 
		//if (!resparam.packageName.equals("com.motorola.android.fmradio"))		     	
				xposedRadio.initResources(resparam);
}
}

S0bes · Aug 28, 2014

hamzahrmalik said:
Tutorial 9 - Methods with parameters

In an earlier tutorial, we covered hooking methods. But what if a method wants a parameter too?

Say if i want to hook onCreate(Bundle savedInstances) in com.android.settings

If i hook it using

Code:

findAndHookMethod("com.android.settings.Settings", lpparam.classLoader, "onCreate", new XC_MethodHook() { });

It will throw a methodNotFound error. So we need to specify the parameters. The method wants a Bundle object. So add Bundle.class as a parameter

Code:

findAndHookMethod("com.android.settings.Settings", lpparam.classLoader, "onCreate", [B]Bundle.class[/B], new XC_MethodHook() { });

Now lets pretend Bundle.class isnt in the SDK and is a system class so cant be referenced. I would use a String instead:

"android.os.Bundle"

Code:

findAndHookMethod("com.android.settings.Settings", lpparam.classLoader, "onCreate", [B]"android.os.Bundle"[/B], new XC_MethodHook() { });

@hamzahrmalik Can you tell me what should I use if parameter is a char?

Code:

@Override
 public boolean isValidDialpadAlphabeticChar(char ch) {
       return (ch >= 'a' && ch <= 'z');
    }

I tried

Code:

XposedHelpers.findAndHookMethod("com.android.dialer.dialpad.LatinSmartDialMap", loadpkg.classLoader,
                    "isValidDialpadAlphabeticChar", Character.class, new XC_MethodHook() {

                @Override protected void beforeHookedMethod(final MethodHookParam param) throws Throwable {
                    XposedBridge.log( "AAAAAAAAAAAAA" ); 
                }             
            });

But log says that it cant find isValidDialpadAlphabeticChar method
java.lang.NoSuchMethodError: com.android.dialer.dialpad.LatinSmartDialMap#isValidDialpadAlphabeticChar(java.lang.Character)#exact
at de.robv.android.xposed.XposedHelpers.findMethodExact(XposedHelpers.java:179)
at de.robv.android.xposed.XposedHelpers.findAndHookMethod(XposedHelpers.java:129)
at de.robv.android.xposed.XposedHelpers.findAndHookMethod(XposedHelpers.java:136)

hamzahrmalik · Aug 28, 2014

S0bes said:
@hamzahrmalik Can you tell me what should I use if parameter is a char?

Code:

@Override public boolean isValidDialpadAlphabeticChar(char ch) { return (ch >= 'a' && ch <= 'z'); }

I tried

Code:

XposedHelpers.findAndHookMethod("com.android.dialer.dialpad.LatinSmartDialMap", loadpkg.classLoader, "isValidDialpadAlphabeticChar", Character.class, new XC_MethodHook() { @Override protected void beforeHookedMethod(final MethodHookParam param) throws Throwable { XposedBridge.log( "AAAAAAAAAAAAA" ); } });

But log says that it cant find isValidDialpadAlphabeticChar method
java.lang.NoSuchMethodError: com.android.dialer.dialpad.LatinSmartDialMap#isValidDialpadAlphabeticChar(java.lang.Character)#exact
at de.robv.android.xposed.XposedHelpers.findMethodExact(XposedHelpers.java:179)
at de.robv.android.xposed.XposedHelpers.findAndHookMethod(XposedHelpers.java:129)
at de.robv.android.xposed.XposedHelpers.findAndHookMethod(XposedHelpers.java:136)

Your hook is fine, i think it's because its overrided method
I'm not sure what to do, ask on the xposed general forum (make sure it hasn't already been asked)

frkhtc · Sep 3, 2014

S0bes said:
Solved my problem. Saw how to do it in Gravitybox sources https://github.com/C3C0/GravityBox/blob/master/src/com/ceco/gm2/gravitybox/GravityBox.java

Code:

public void handleInitPackageResources(InitPackageResourcesParam resparam) throws Throwable { // if (!resparam.packageName.equals("com.android.systemui")) XposedSystemUI.initResources(resparam); //if (!resparam.packageName.equals("com.motorola.android.fmradio")) xposedRadio.initResources(resparam); } }

How did you do that? Sorry for my noobness

frkhtc · Sep 3, 2014

Thanks for this tutorial hamzahrmalik. I manage to make a module to change some drawables from framework, for a specific app.
Now, since i'm a total noob on Java programming, can someone give me a tip on how to change those files, for multiple specific apps.
An example: if a open Dialer, it should use png1, if i open messages it should use png2 and so on.
I have tried an if-else statement but doesn't work

hamzahrmalik · Sep 3, 2014

frkhtc said:
Thanks for this tutorial hamzahrmalik. I manage to make a module to change some drawables from framework, for a specific app.
Now, since i'm a total noob on Java programming, can someone give me a tip on how to change those files, for multiple specific apps.
An example: if a open Dialer, it should use png1, if i open messages it should use png2 and so on.
I have tried an if-else statement but doesn't work

@Override
public void handleInitPackageResources( XC_InitPackageResources.InitPackageResourcesParam resparam) throws Throwable {

//contacts
if (!resparam.packageName.equals("com.android.htccontacts")) {

XModuleResources modRes = XModuleResources.createInstance(MODULE_PATH, resparam.res);
XposedBridge.log("---------------------CONTACTS------------------------------");
XResources.setSystemWideReplacement("com.htc", "drawable", "common_app_bkg_top_src", modRes.fwd(R.drawable.common_app_bkg_top_blue));
XResources.setSystemWideReplacement("com.htc", "drawable", "common_footer", modRes.fwd(R.drawable.common_footer));
XResources.setSystemWideReplacement("com.htc", "drawable", "common_header", modRes.fwd(R.drawable.common_headerblue));
XposedBridge.log("sensesixtheme: ----------Contacts were changed!--------------");
}
//gallery
else if (!resparam.packageName.equals("com.htc.album")) {
XModuleResources modRes = XModuleResources.createInstance(MODULE_PATH, resparam.res);
XposedBridge.log("sensesixtheme: ---------------------------GALLERY-----------------------------------------------");
XResources.setSystemWideReplacement("com.htc", "drawable", "common_app_bkg_top_src", modRes.fwd(R.drawable.common_app_bkg_top_red));
XResources.setSystemWideReplacement("com.htc", "drawable", "common_footer", modRes.fwd(R.drawable.common_footer));
XResources.setSystemWideReplacement("com.htc", "drawable", "common_header", modRes.fwd(R.drawable.common_headerred));
XposedBridge.log(" ---------------Ok, gallery were changed!----------------");
}

In your if statements you've used
If(!reparam.bla.bla)
The ! Means not equal
Remove all the !

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frkhtc · Sep 3, 2014

hamzahrmalik said:
In your if statements you've used
If(!reparam.bla.bla)
The ! Means not equal
Remove all the !

Sent from my amazingly awesome OnePlus One using Tapatalk

Thanks a lot. It's working now. There is a lag of 0.5 sec in changing those files, but not in every app. Gonna do some research. For now i can live with that.

frkhtc · Sep 14, 2014

I'm back with another question. How can you change the status bar background in an app?
i have tried this code

Code:

if (resparam.packageName.equals("com.android.htccontacts")) try {
            		resparam.res.setReplacement("com.htc", "drawable", "common_header", modRes.fwd(R.drawable.header_default_categone));
            		resparam.res.setReplacement("com.android.systemui", "drawable", "status_bar_background", new XResources.DrawableLoader() {
            		    @Override
            		    public Drawable newDrawable(XResources res, int id) throws Throwable {
            		        return new ColorDrawable(Color.WHITE);
            		    }
            		});
            	} catch (Throwable t) { XposedBridge.log(t); }

but it gives this error in logcat: android.content.res.Resources$NotFoundException: com.android.systemui:drawable/status_bar_background
at android.content.res.XResources.setReplacement(XResources.java307)

Mjuksel · Sep 24, 2014

edit scrap my old post ;

this is what i have next, trying to make the notifications transparent.. not really working

Code:

package mjxl.xposed.cm11;

import android.content.res.XModuleResources;
import de.robv.android.xposed.IXposedHookInitPackageResources;
import de.robv.android.xposed.IXposedHookZygoteInit;
import de.robv.android.xposed.callbacks.XC_InitPackageResources.InitPackageResourcesParam;

public class CM11notifications implements IXposedHookZygoteInit, IXposedHookInitPackageResources {
    private static String MODULE_PATH = null;

    @Override
    public void initZygote(StartupParam startupParam) throws Throwable {
        MODULE_PATH = startupParam.modulePath;
    }

    @Override
    public void handleInitPackageResources(InitPackageResourcesParam resparam) throws Throwable {
        XModuleResources modRes = XModuleResources.createInstance(MODULE_PATH, resparam.res);
        resparam.res.setReplacement("android", "drawable", "notification_bg_normal", modRes.fwd(R.drawable.mjxlnull));
    }
}

this doesn't give any errors, but either i'm pointing the wrong files, or something needs a fix.

any tips ?

hamzahrmalik · Sep 25, 2014

Mjuksel said:

edit scrap my old post ;

this is what i have next, trying to make the notifications transparent.. not really working

Code:

package mjxl.xposed.cm11;

import android.content.res.XModuleResources;
import de.robv.android.xposed.IXposedHookInitPackageResources;
import de.robv.android.xposed.IXposedHookZygoteInit;
import de.robv.android.xposed.callbacks.XC_InitPackageResources.InitPackageResourcesParam;

public class CM11notifications implements IXposedHookZygoteInit, IXposedHookInitPackageResources {
    private static String MODULE_PATH = null;

    @Override
    public void initZygote(StartupParam startupParam) throws Throwable {
        MODULE_PATH = startupParam.modulePath;
    }

    @Override
    public void handleInitPackageResources(InitPackageResourcesParam resparam) throws Throwable {
        XModuleResources modRes = XModuleResources.createInstance(MODULE_PATH, resparam.res);
        resparam.res.setReplacement("android", "drawable", "notification_bg_normal", modRes.fwd(R.drawable.mjxlnull));
    }
}

this doesn't give any errors, but either i'm pointing the wrong files, or something needs a fix.

any tips ?

I'm assuming you're targeting wrong
Look at some mods on github which change notification background

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devtrop · Sep 28, 2014

how can I hook a systemService?

I'm trying to hook AppOpsService,
actually, I'm not even sure what is the correct package name...
I'd like to hook the getUid() method so I could filter out some uid from the AppOps...

Is it possible to hook a method in a system service?

PedriX · Oct 30, 2014

Fantastic tutorial :good: :good:

drsaidalavi@gmail.com · Nov 4, 2014

Bluetooth Launcher APK to launch voice dialer in LG g2

Hello Hamzahrmalik,

I was the onewho requested for the Hijiri clock and I must say it is fantastic in all aspect . I am using it in my LG G2 D 802 successfully. I want to send donation to your development project, but I don't know how to send it. Kindly give the address by which I can send it by PayPal.

I have one more request. I am very much satisfied with my LG G2 D802. The only problem is that it can not launch any voice dialer applications like Cyberon voice speed dial, Google search, or Utter when the dial button of the connected bluetooth head set is pressed. I can answer the call by pressing it , but can't make a call. I wrote to the company about this which is available even in the old and basic models like Nokia N 95. But they said it is not there in the LG g2. Then I came across Cloudyfa's Cloudyflex 2.2 rom for LG g2. When I installed it, it brought back this function, and I can launch Cyberon voice speed dial by pressing the Bluetooth dial button. But when they upgraded the rom, this function again lost, so that now I am stuck in Cloudyflex 2.2 rom only to retain this function. The bluetooth version in this rom is F340k20a.
I tried to extract the apk file, odex file , lib file etc and tried to replace in higher versions of the same rom and other roms, but failed.
Now I want to install the ported G3 rom in my LG G2, but none of them has this bluetooth function.
I humbly request you ,if possible make an apk, or a xposed module by which you can assign any third party voice dialer to be launched when the dial button of bluetooth head set is pressed. Without this the phone will not be completely Hands free . Always we have to mount the phone in the dash board ofthe car and shout at it to open Google now. So it will be a great apk or module if you can successfully make it and we can install it any android with all latest roms.
Kindly try for it, and we don't mind even if it is a paid apk

Thanking You
Dr.Saidalavi

hamzahrmalik · Nov 4, 2014

drsaidalavi@gmail.com said:
Hello Hamzahrmalik,

I was the onewho requested for the Hijiri clock and I must say it is fantastic in all aspect . I am using it in my LG G2 D 802 successfully. I want to send donation to your development project, but I don't know how to send it. Kindly give the address by which I can send it by PayPal.

I have one more request. I am very much satisfied with my LG G2 D802. The only problem is that it can not launch any voice dialer applications like Cyberon voice speed dial, Google search, or Utter when the dial button of the connected bluetooth head set is pressed. I can answer the call by pressing it , but can't make a call. I wrote to the company about this which is available even in the old and basic models like Nokia N 95. But they said it is not there in the LG g2. Then I came across Cloudyfa's Cloudyflex 2.2 rom for LG g2. When I installed it, it brought back this function, and I can launch Cyberon voice speed dial by pressing the Bluetooth dial button. But when they upgraded the rom, this function again lost, so that now I am stuck in Cloudyflex 2.2 rom only to retain this function. The bluetooth version in this rom is F340k20a.
I tried to extract the apk file, odex file , lib file etc and tried to replace in higher versions of the same rom and other roms, but failed.
Now I want to install the ported G3 rom in my LG G2, but none of them has this bluetooth function.
I humbly request you ,if possible make an apk, or a xposed module by which you can assign any third party voice dialer to be launched when the dial button of bluetooth head set is pressed. Without this the phone will not be completely Hands free . Always we have to mount the phone in the dash board ofthe car and shout at it to open Google now. So it will be a great apk or module if you can successfully make it and we can install it any android with all latest roms.
Kindly try for it, and we don't mind even if it is a paid apk

Thanking You
Dr.Saidalavi

Firstly, this should go in the requests thread
Have you tried using the Xposed Additions module it let's you remap buttons

Edit
I don't take donations, you can help out by buying any of my paid apps, thanks

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vikasb32 · Nov 28, 2014

hello i have problem my xposed module work fine but when i use setTheme function my module didn't work at all hope you will help me in this. here is my code

this is my fragment class

public class SettingFragment extends PreferenceFragment implements
OnSharedPreferenceChangeListener {

public static boolean enabled = false;

@Override
public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);
this.getPreferenceManager().setSharedPreferencesMode(
PreferenceActivity.MODE_WORLD_READABLE);
this.getPreferenceManager().getSharedPreferences()
.registerOnSharedPreferenceChangeListener(this);

this.addPreferencesFromResource(R.xml.pref_setting);

}

@Override
public void onSharedPreferenceChanged(SharedPreferences arg0, String key) {

//SettingsProvider.settingsChanged(getActivity());
if (key.equals("theme")) {

Intent intent = new Intent(getActivity(), SettingActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
startActivity(intent);
getActivity().overridePendingTransition(android.R.anim.fade_in,
android.R.anim.fade_out);

}
}

}

here my main activity the red color code make my module not to work at all but if i remove that code it work fine.

public class SettingActivity extends ActionBarActivity {
private Menu Vmenu;
private SharedPreferences prefs;
@Override
public void onCreate(Bundle savedInstanceState) {
prefs = PreferenceManager.getDefaultSharedPreferences(this);
// PreferenceManager.setDefaultValues(this, R.xml.pref_setting, false);
if (prefs.getBoolean(Common.KEY_APP_THEME, false)) {

setTheme(R.style.AppTheme);
}
else {
setTheme(R.style.AppBaseTheme);
}

super.onCreate(savedInstanceState);

if(savedInstanceState == null) {
setContentView(R.layout.activity_settings);
Fragment fragment = new SettingFragment();
fragment.setArguments(getIntent().getExtras());
getSupportFragmentManager().beginTransaction().add(R.id.settingsFragment, fragment).commit();
}

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
SystemBarTintManager tintManager = new SystemBarTintManager(this);
tintManager.setStatusBarTintEnabled(true);
int actionBarColor = this.getResources().getColor(
R.color.statusbar_color);
tintManager.setStatusBarTintColor(actionBarColor);
}
}

public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
getSupportActionBar().setDisplayHomeAsUpEnabled(false);
Vmenu = menu;
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu, menu);

return true;
}

public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.toast:
final Toast tag = Toast.makeText(getApplicationContext(),
R.string.toast_test_title, Toast.LENGTH_SHORT);
tag.show();
return true;
}

return super.onOptionsItemSelected(item);
}

}

hamzahrmalik · Nov 28, 2014

vikasb32 said:
hello i have problem my xposed module work fine but when i use setTheme function my module didn't work at all hope you will help me in this. here is my code

this is my fragment class

here my main activity the red color code make my module not to work at all but if i remove that code it work fine.

What's the module meant to do?
Where is the Xposed class?
The red is in your activity not the module part and therefore not an Xposed error

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vikasb32 · Nov 28, 2014

My module is Xtoast and no problem in xposed class but when I copy red code in my to add a functionality to change app theme to holo dark and light my xposed did not work at all but when I remove that red part my module work fine can you tell me why? It is due to xsharedpreference did not able to read my preference file?

hamzahrmalik · Nov 28, 2014

vikasb32 said:
My module is Xtoast and no problem in xposed class but when I copy red code in my to add a functionality to change app theme to holo dark and light my xposed did not work at all but when I remove that red part my module work fine can you tell me why? It is due to xsharedpreference did not able to read my preference file?

Ah I get you
Yes it is you need to use world readable

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vikasb32 · Nov 29, 2014

hamzahrmalik said:
Ah I get you
Yes it is you need to use world readable

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Thanks can you tell me where I use that word i already use that word in my fragment class.

[TUTORIAL]Xposed module devlopment

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