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I compiled, installed and run successfully my custom webview, based on chromium 46 (tag 46.0.2490.71) by following these instructions :
https://www.chromium.org/developers/how-tos/android-build-instructions
and built the ninja target "system_webview_apk".
And it works great !
Now I am trying to integrate it in my custom android image based on lolipop 5.1.1_r29 built from AOSP. The build and install steps work, but when an application tries to inflate the webview, I have the following error :
E/AndroidRuntime: Caused by: java.lang.IllegalArgumentException: Unsupported ABI: null
at dalvik.system.VMRuntime.getInstructionSet(VMRuntime.java:324)
at dalvik.system.VMRuntime.is64BitAbi(VMRuntime.java:337)
at android.webkit.WebViewFactory.getWebViewNativeLibraryPaths(WebViewFactory.java:286)
(Full stack trace at the end of the post)
The strange thing is that, if I take the exact same APK, and install it with ADB :
adb shell stop
adb pull /system/app/webview/webview.apk
adb shell rm -rf /system/app/webview/
adb shell start
adb install webview.apk
Then the error disapears and the webview shows up correctly.
Next, if I put it back again in /system/app :
adb uninstall com.android.webview
adb push webview.apk /system/app/webview/webview.apk
adb shell stop
adb shell start
It fails again with the same error.
My investigation about the "Unsupported ABI: null" only gave me this : https://code.google.com/p/chromium/issues/detail?id=559720
But it doesn’t seem related.
I need the webview based on chromium 46 (at least) on android 5.1.1.
Any help, clue or suggestion will be appreciated :)
On the nexus 6 :
root@shamu:/ # ll /system/lib/libwebv*
-rw-r--r-- root root 31282132 2008-04-15 23:40 libwebviewchromium.so
-rw-r--r-- root root 5376 2015-12-09 15:51 libwebviewchromium_loader.so
-rw-r--r-- root root 9532 2015-12-09 15:51 libwebviewchromium_plat_support.so
Chromium build configuration :
$ cat chromium.gyp_env
{ 'GYP_DEFINES': 'target_arch=arm OS=android', }
$ cat .gclient
solutions = [
{ "name" : "src",
"url" : "https://chromium.googlesource.com/chromium/src.git",
"deps_file" : "DEPS",
"managed" : False,
"custom_deps" : {
},
"safesync_url": "",
},
]
cache_dir = None
target_os = ["android"]
Full stack trace :
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.webviewui/com.example.webviewui.MainActivity}: android.view.InflateException: Binary XML file line #6: Error inflating class android.webkit.WebView
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2325)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Caused by: android.view.InflateException: Binary XML file line #6: Error inflating class android.webkit.WebView
at android.view.LayoutInflater.createView(LayoutInflater.java:633)
at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:55)
at android.view.LayoutInflater.onCreateView(LayoutInflater.java:682)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:741)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:378)
at android.app.Activity.setContentView(Activity.java:2145)
at com.example.webviewui.MainActivity.onCreate(MainActivity.java:48)
at android.app.Activity.performCreate(Activity.java:5990)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Constructor.newInstance(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:288)
at android.view.LayoutInflater.createView(LayoutInflater.java:607)
at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:55)
at android.view.LayoutInflater.onCreateView(LayoutInflater.java:682)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:741)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:378)
at android.app.Activity.setContentView(Activity.java:2145)
at com.example.webviewui.MainActivity.onCreate(MainActivity.java:48)
at android.app.Activity.performCreate(Activity.java:5990)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Caused by: java.lang.IllegalArgumentException: Unsupported ABI: null
at dalvik.system.VMRuntime.getInstructionSet(VMRuntime.java:324)
at dalvik.system.VMRuntime.is64BitAbi(VMRuntime.java:337)
at android.webkit.WebViewFactory.getWebViewNativeLibraryPaths(WebViewFactory.java:286)
at android.webkit.WebViewFactory.loadNativeLibrary(WebViewFactory.java:397)
at android.webkit.WebViewFactory.getProvider(WebViewFactory.java:103)
at android.webkit.WebView.getFactory(WebView.java:2194)
at android.webkit.WebView.ensureProviderCreated(WebView.java:2189)
at android.webkit.WebView.setOverScrollMode(WebView.java:2248)
at android.view.View.<init>(View.java:3588)
at android.view.View.<init>(View.java:3682)
at android.view.ViewGroup.<init>(ViewGroup.java:497)
at android.widget.AbsoluteLayout.<init>(AbsoluteLayout.java:55)
at android.webkit.WebView.<init>(WebView.java:544)
at android.webkit.WebView.<init>(WebView.java:489)
at android.webkit.WebView.<init>(WebView.java:472)
at android.webkit.WebView.<init>(WebView.java:459)
at java.lang.reflect.Constructor.newInstance(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:288)
at android.view.LayoutInflater.createView(LayoutInflater.java:607)
at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:55)
at android.view.LayoutInflater.onCreateView(LayoutInflater.java:682)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:741)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:378)
at android.app.Activity.setContentView(Activity.java:2145)
at com.example.webviewui.MainActivity.onCreate(MainActivity.java:48)
at android.app.Activity.performCreate(Activity.java:5990)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2387)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5254)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
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When compiling the WebView for arm, Chromium (64.0.3282.134, and likely other versions) will target armv7. This results in putting native libraries under the armeabi-v7a folder in the apk. When this is installed on my example armv7 Android 5.1.1 device Android will run dex2opt to process the apk. In doing so it will look for native libraries under the armeabi folder, not the armeabi-v7a folder. Because of this, it will never find the libraries and when the WebView is launched it fails.
Chromium's source has comments saying that it no longer supports armeabi, so building for that appears to not be viable. I did attempt to explicitly build for arm version 6 and hit compile failures.
The workaround I've found is this:
armeabi-v7a to armeabi
zipalign and apksigner to get the apk ready to installDoing so I observed the Android 5.1.1 device was able to find the native libraries and use them when launching the WebView.
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