Xposed - Legacy thread. Don't panic, Xposed is still here.

dk_zero-cool · Mar 24, 2014

compilerNayan said:
The object is of type KeyGuardPatternView.UnlockPatternListener where UnlockPatternListener is an inner class. and mCallback is member variable of Outer Class i.e. KeyGuardPatternView. I am unable to access mCallback in the code above. Can anyone guide me how to access it or what has gone wrong if there is any mistake.

You just need to get the outer object

Code:

Object mCallback = getObjectField( [B]getSurroundingThis(param.thisObject)[/B], "mCallback" );

Or without the additional helper

Code:

Object mCallback = getObjectField( [B]getObjectField([/B][B][B]param.thisObject[/B], "this$0")[/B], "mCallback" );

rovo89 · Mar 24, 2014

abrasive said:
Thanks for the quick reply. I've attached a new logcat

Thanks, it indeed looks a bit like those other crashing TV apps. Could you PM me the APK? Play Store says it's not available in my country.

bellumus said:
I just tried to reinstall the frameworks. With the normal way, my device just rebooted instantly and nothing happened. With the recovery method only xposedbridge.jar got installed, app_process did not. I've had this installed before, it just worked the simple way so I have no idea what I should do now.

Do you have a custom recovery (CWM/TWRP)? Did you see any error messages while flashing the file?

Lazdaa said:
Are anyone having issues with updating Xposed? Whenever I reboot after I try to update nothing happens, it's still updated.

HTC One with ViperOne 5.8.0 android 4.4.2.

A frequent problem with HTC is that they have S-On, which forgets any changes to /system on reboot. Try installation via recovery.

xdp said:
rovo, just wondering if you had come across my message above from a few days back. I was able to build the Xposed project but having trouble with busybox. The error is coming out of multi_prebuilt.mk file - the toolchain is now properly in my PATH, but I still receive the error "LOCAL_MODULE or LOCAL_MODULE_CLASS not needed by BUILD_MULTI_PREBUILT, use BUILD_PREBUILT instead!. Stop." and my search efforts are turning up short. Do you have any idea what might be missing here?

Thanks again for your work and help.

Oh, sorry. I had seen the notification, but forgot to reply. I have checked again and this seems to be required as well:

Code:

export PATH=$PATH:/android/aosp/422/prebuilts/gcc/linux-x86/arm/arm-eabi-4.6/bin

(adjust it to your source tree's path).

Tdavid85 said:
The last framework with the last liquidsmooth crash the system ui.

If you want to get it fixed, please post a logcat of the bootloop. Please also make sure that this happens with only the framework installed (no active modules), but works fine without Xposed.

ricky310711 said:
would be nice to see a flashable .zip of the installer, maybe even an aroma package that provides the option to install or disable the framework, not only will this provide developers with a way to pre-activate xposed for their roms but also a more secure way of installation.

Actually, I'm against ROMs with pre-installed Xposed. For that to make sense, you would also need to install and activate modules, which would require to write several things to /data, overwriting the user's settings. I have listed other reasons in the FAQ.

As you mentioned it would be more secure - why? You can now activate Xposed via recovery. Deactivating via recovery has been around for some time, now you can simply press a key. I would rather say that putting the complete installation into a zip is more risky, as you probably couldn't replicate all the checks that are done by the installer.

tobbbie said:
Now it worked on my Xperia Ray ICS 4.0.4
Is there any specialty regarding BusyBox version or its installation on the device? I have BusyBox 1.20.2 CM9 installed via JRummy BusyBox Installer 4.1 to /system/xbin/

You shouldn't even need any installed BusyBox as Xposed Installer comes with its own binary. The segmentation faults probably come from a weird system library. The static BusyBox includes all the dependencies, so it doesn't rely on system libraries (but that of course makes the file much bigger).

Diaz1999 said:
@rovo89 How about this?
I make small modification by forced uiOptions="splitActionBarWhenNarrow" and showAsAction="always" for all menus items and include some icons for them as well (all icons picked up from Android Design-Icons)
No need to press the menu button first if you want sort by... etc.

Interesting, yeah. The buttons in the download section should be displayed as icons already, but maybe it's different on small screens. Then again wouldn't you want to use the little space you have for the content rather than the icons? Not sure.

In the log section, I the refresh button should be shown as icon. Not sure if the other icons are needed that often. I wouldn't want to make the "Clear log" action that prominent.

claytonjn · Mar 25, 2014

egingell said:
It won't FC unless Xposed is not installed or the link points to the wrong activity. And it's Settings that would FC in either case (when the link is clicked). Not Xposed.

Edit: And if you're using an unrooted ROM with Xposed baked-in, then either switch to a rooted ROM or wait until the dev updates. There's no way around the signature mismatch except to delete the old APK first (either by uninstall+install or delete+paste+reboot) and the Android Installer won't do either.

Sent from: SGS2 - JB 4.1.2 GB27 / SGS4 - JB 4.2.2 MF9

This was my point exactly. Hopefully the way you put it was more clear.

Scary Guy · Mar 25, 2014

I don't know if it has been suggested but I wouldn't mind seeing a repo system like in F-Droid. Not to mention it would be nice to be able to check of which xposed modules you're interested in (such as for specific ROM's/android versions, type of modifications the modules are for, if they are open source, if they contain ads, etc...)

Seriously thanks for this though. I run Pacman as a ROM and even though it does everything, it doesn't do everything. This helps out a lot.

tewilove · Mar 25, 2014

what is the right way to hook checkComponentPermission() on AMS?

Code:

	public void initZygote(StartupParam startupParam) throws Throwable {
		try {
			Class<?> clzAMS = Class
					.forName("com.android.server.am.ActivityManagerService");
			Method mChkPerm = clzAMS.getDeclaredMethod(
					"checkComponentPermission", String.class, Integer.TYPE,
					Integer.TYPE, Integer.TYPE, Boolean.TYPE);
			XposedBridge.hookMethod(mChkPerm, new XC_MethodReplacement() {

				@Override
				protected Object replaceHookedMethod(MethodHookParam param)
						throws Throwable {
					return PackageManager.PERMISSION_GRANTED;
				}

			});
		} catch (Throwable ex) {
			ex.printStackTrace();
		}
	}

This results in boot loop, and logcat shows a NPE in first call to this function. Even I do nothing in before/after hooked method there is still NPE.

Code:

W/dalvikvm( 1421): threadid=12: thread exiting with uncaught exception (group=0x416c9da0)
E/AndroidRuntime( 1421): !@*** FATAL EXCEPTION IN SYSTEM PROCESS: ActivityManager
E/AndroidRuntime( 1421): java.lang.NullPointerException
E/AndroidRuntime( 1421): 	at com.android.server.am.ActivityManagerService.checkComponentPermission(ActivityManagerService.java:7056)
E/AndroidRuntime( 1421): 	at com.android.server.am.ActivityManagerService.checkPermission(ActivityManagerService.java:7110)
E/AndroidRuntime( 1421): 	at com.android.server.am.ActivityManagerService.checkCallingPermission(ActivityManagerService.java:7118)
E/AndroidRuntime( 1421): 	at com.android.server.am.ActivityManagerService.enforceCallingPermission(ActivityManagerService.java:7127)
E/AndroidRuntime( 1421): 	at com.android.server.am.ActivityManagerService.registerProcessObserver(ActivityManagerService.java:10277)
E/AndroidRuntime( 1421): 	at com.android.server.am.ActivityManagerService.<init>(ActivityManagerService.java:2489)
E/AndroidRuntime( 1421): 	at com.android.server.am.ActivityManagerService.<init>(ActivityManagerService.java:315)
E/AndroidRuntime( 1421): 	at com.android.server.am.ActivityManagerService$AThread.run(ActivityManagerService.java:2326)
I/Process ( 1421): Sending signal. PID: 1421 SIG: 9
E/AndroidRuntime( 1421): Error reporting crash
E/AndroidRuntime( 1421): java.lang.NullPointerException
E/AndroidRuntime( 1421): 	at com.android.internal.os.RuntimeInit$UncaughtHandler.uncaughtException(RuntimeInit.java:89)
E/AndroidRuntime( 1421): 	at java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:693)
E/AndroidRuntime( 1421): 	at java.lang.ThreadGroup.uncaughtException(ThreadGroup.java:690)

Please help.

itandy · Mar 25, 2014

@rovo89, I have a Xperia V phone just upgraded to the latest 4.3 firmware. Since then the phone baseband often show Unknown and then the phone mobile and Wifi cannot be used. But if I uninstall Xposed (binary only via Xposed Installer) and reboot the phone, baseband and everything works again. Then if I install Xposed binary again and soft reboot the phone, both Xposed and baseband work no problem. And hard reboot will usually (not always) result in baseband issue again.

It seems to me Xposed is interfering with the baseband initialization in kernel level. However, Xposed log shows no error at all. You have any idea or heard similar issue before?

PS. The latest Xposed 2.5 and previous 2.4.1 (Xperia test) versions have this issue on my phone

claytonjn · Mar 25, 2014

itandy said:
@rovo89, I have a Xperia V phone just upgraded to the latest 4.3 firmware. Since then the phone baseband often show Unknown and then the phone mobile and Wifi cannot be used. But if I uninstall Xposed (binary only via Xposed Installer) and reboot the phone, baseband and everything works again. Then if I install Xposed binary again and soft reboot the phone, both Xposed and baseband work no problem. And hard reboot will usually (not always) result in baseband issue again.

It seems to me Xposed is interfering with the baseband initialization in kernel level. However, Xposed log shows no error at all. You have any idea or heard similar issue before?

PS. The latest Xposed 2.5 and previous 2.4.1 (Xperia test) versions have this issue on my phone

I don't mean to insult you if you've tried this already, but since you didn't explicitly state it - were all modules disabled in Xposed when you ran these tests?

Celestial Fury · Mar 25, 2014

GermainZ said:
Change the installation mode, then.

Did you try other installation modes? What device do you have? Can you upload a logcat?

Device in my sig: Xperia Z1 4.3. 136 stock rooted. All 3 install method give the same error.

For a logcat what options should I use?

Level: Verbose, Debug, information, warning, error, fatal

Format: brief, process, tag, thread, thread time, time, long, raw

I'm using aLogcat.

compilerNayan · Mar 25, 2014

dk_zero-cool said:
You just need to get the outer object

Code:

Object mCallback = getObjectField( [B]getSurroundingThis(param.thisObject)[/B], "mCallback" );

Or without the additional helper

Code:

Object mCallback = getObjectField( [B]getObjectField([/B][B][B]param.thisObject[/B], "this$0")[/B], "mCallback" );

Thanks a lot.. it worked like a charm

itandy · Mar 25, 2014

JamMasterClay said:
I don't mean to insult you if you've tried this already, but since you didn't explicitly state it - were all modules disabled in Xposed when you ran these tests?

No offense taken. Yes I did disable all modules and with Xposed alone the baseband still doesn't work, at least most of the time.

rovo89 · Mar 25, 2014

Celestial Fury said:
Device in my sig: Xperia Z1 4.3. 136 stock rooted. All 3 install method give the same error.

For a logcat what options should I use?

Level: Verbose, Debug, information, warning, error, fatal

Format: brief, process, tag, thread, thread time, time, long, raw

I'm using aLogcat.

Verbose and time should give the most information.
Anyway, could you also check that you have no permission blockers active that could restrict the installer's ability to write to the file system?

itandy said:
No offense taken. Yes I did disable all modules and with Xposed alone the baseband still doesn't work, at least most of the time.

That's strange. Xposed runs in userspace, so I don't see how it could interfere with the kernel or radio. Could you try to test it multiple times without Xposed? If the same error occurs just once, we know that Xposed can't be the culprit.

itandy · Mar 25, 2014

rovo89 said:
That's strange. Xposed runs in userspace, so I don't see how it could interfere with the kernel or radio. Could you try to test it multiple times without Xposed? If the same error occurs just once, we know that Xposed can't be the culprit.

That's what I initially think too. Anyway, I'll give it some more test and report back.

Celestial Fury · Mar 25, 2014

rovo89 said:
Verbose and time should give the most information.
Anyway, could you also check that you have no permission blockers active that could restrict the installer's ability to write to the file system?

I use Xprivacy but Xposed is not restricted. Modules are still able to update just fine.

In the module screen it does show that Xposed 2.5 is installed.

dk_zero-cool · Mar 25, 2014

rovo89 said:
That's strange. Xposed runs in userspace, so I don't see how it could interfere with the kernel or radio.

It wouldn't, if anything it would be interfering with the userspace parts communicating with the kernel and radio I would think.

bernlim · Mar 25, 2014

I'm trying to hook onto android.webkit.WebView from my own app with webview implemented but I am getting a java.lang.ClassNotFoundException: android.webkit.Webview. Tried searching around but can't find any mentions of other people trying to hook onto Android frameworks directly. Is this even possible?

egingell · Mar 25, 2014

bernlim said:
I'm trying to hook onto android.webkit.WebView from my own app with webview implemented but I am getting a java.lang.ClassNotFoundException: android.webkit.Webview. Tried searching around but can't find any mentions of other people trying to hook onto Android frameworks directly. Is this even possible?

Classes in Java are case-sensitive.

If that's not the problem, show us your code.

Sent from: SGS2 - JB 4.1.2 GB27 / SGS4 - JB 4.2.2 MF9

Pons · Mar 25, 2014

bernlim said:
I'm trying to hook onto android.webkit.WebView from my own app with webview implemented but I am getting a java.lang.ClassNotFoundException: android.webkit.Webview. Tried searching around but can't find any mentions of other people trying to hook onto Android frameworks directly. Is this even possible?

egingell said:
Classes in Java are case-sensitive.

If that's not the problem, show us your code.

That's my guess.

http://developer.android.com/reference/android/webkit/WebView.html

bernlim · Mar 25, 2014

PonsAsinorem said:
That's my guess.

http://developer.android.com/reference/android/webkit/WebView.html

egingell said:
Classes in Java are case-sensitive.

If that's not the problem, show us your code.

Sent from: SGS2 - JB 4.1.2 GB27 / SGS4 - JB 4.2.2 MF9

My mistake in the post. My code does use android.webkit.Webview and still throwing the error.
Here's the code:

Code:

package com.example.a;

import static de.robv.android.xposed.XposedHelpers.findAndHookMethod;
import de.robv.android.xposed.IXposedHookLoadPackage;
import de.robv.android.xposed.XC_MethodHook;
import de.robv.android.xposed.XposedBridge;
import de.robv.android.xposed.callbacks.XC_LoadPackage.LoadPackageParam;

public class MainActivity implements IXposedHookLoadPackage {
    public void handleLoadPackage(final LoadPackageParam lpparam) throws Throwable {
        if (!lpparam.packageName.equals("com.example.webview"))
            return;

        XposedBridge.log("we are in webview");
        
        findAndHookMethod("android.webkit.Webview", lpparam.classLoader, "android.webkit.WebView.loadUrl", new XC_MethodHook() {
            @Override
            protected void afterHookedMethod(MethodHookParam param) throws Throwable {
            	XposedBridge.log("we are in loadurl");
            }
    });
    }
}

Log shows "we are in webview" but throws ClassNotFoundException right after.

Pons · Mar 25, 2014

bernlim said:

My mistake in the post. My code does use android.webkit.Webview and still throwing the error.
Here's the code:

Did you try WebView and not Webview at findAndHookMethod("android.webkit.Webview"

Check the link I gave earlier.

bernlim · Mar 25, 2014

PonsAsinorem said:
Did you try WebView and not Webview at findAndHookMethod("android.webkit.Webview"

Check the link I gave earlier.

Roger that, it helped thanks!
However, now it throws java.lang.NoSuchMethodError: android.webkit.WebView#android.webkit.WebView.loadUrl()#exact
Same error for WebView.loadUrl() and just loadUrl() as well.
My WebView app is a default template like so:

Code:

WebView myWebView = (WebView) findViewById(R.id.webview);
myWebView.setWebViewClient(new WebViewClient());
myWebView.loadUrl(url);

Xposed - Legacy thread. Don't panic, Xposed is still here.

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