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java.io.FileNotFoundException: /jacoco.exec: open failed: EROFS (Read-only file system)

Facing this problem while trying to implement JaCoCo Offline Instrumentation.
W/System.err( 1733): java.io.FileNotFoundException: /jacoco.exec: open failed: EROFS (Read-only file system)
W/System.err( 1733): at libcore.io.IoBridge.open(IoBridge.java:456)
W/System.err( 1733): at java.io.FileOutputStream.<init>(FileOutputStream.java:89)
--
W/System.err( 1733): at libcore.io.IoBridge.open(IoBridge.java:456)
W/System.err( 1733): at java.io.FileOutputStream.<init>(FileOutputStream.java:89)
W/System.err( 1733): at org.jacoco.agent.rt.internal_14f7ee5.output.FileOutput.openFile(FileOutput.java:67)
W/System.err( 1733): at org.jacoco.agent.rt.internal_14f7ee5.output.FileOutput.startup(FileOutput.java:49)
W/System.err( 1733): at org.jacoco.agent.rt.internal_14f7ee5.Agent.startup(Agent.java:122)
W/System.err( 1733): at org.jacoco.agent.rt.internal_14f7ee5.Agent.getInstance(Agent.java:50)
W/System.err( 1733): at org.jacoco.agent.rt.internal_14f7ee5.Offline.<clinit>(Offline.java:31)

The solution is well-documented in jacoco but for Android people, what you need is to add the file in /src/androidTest/resources/jacoco-agent.properties with the contents output=none so jacoco can startup without failing, and coverage will be written as normal and transferred correctly later by the android gradle plugin coverage implementation.

I think it's safe to ignore that offline instrumentation warning, because the path should be something alike: executionData = files("${project.buildDir}/jacoco/${testTaskName}.exec") (on the PC - so there is no need to save it on the device and then pull the file).
On Android this will add the JaCoCo agent into the APK:
buildTypes {
debug {
testCoverageEnabled = true
}
}

Cordova App breaks on Android 5.0

Cordova App breaks on Android lollipop, During app installation this is what i see in the logcat, though i am not sure if these are the actual cause of the error. (app installs/works fine on versions < 5.0)
using cordova v-5.1.1 & cordova-android#4.0.2
I/PersonaManagerService( 3485): PersonaId don't exist
I/ActivityManager( 3485): do not start freezing screen for locked container getKeyguardshowstate = false
E/Parcel ( 3485): Class not found when unmarshalling: com.android.packageinstaller.InstallFlowAnalytics
E/Parcel ( 3485): java.lang.ClassNotFoundException: com.android.packageinstaller.InstallFlowAnalytics
further downword in the logs i see this
D/ApplicationPolicy( 3485): isStatusBarNotificationAllowedAsUser: packageName = com.android.providers.downloads,userId = 0
V/ApplicationPolicy( 3485): isApplicationStateBlocked userId 0 pkgname com.android.providers.downloads
W/NotificationService( 3485): Pray mode not found android.content.pm.PackageManager$NameNotFoundException: Application package com.sec.android.settings.praymodewidget not found
I/PackageManager( 3485): do mInstaller.dexopt : 0
D/PackageManager( 3485): Time to dexopt: 1.389 seconds
W/System.err( 3485): java.io.FileNotFoundException: /data/app/com.TestApp.Test-1: open failed: EISDIR (Is a directory)
W/System.err( 3485): at libcore.io.IoBridge.open(IoBridge.java:456)
W/System.err( 3485): at java.io.FileInputStream.<init>(FileInputStream.java:76)
W/System.err( 3485): at android.content.pm.PackageParser.getHashValueOfPackage(PackageParser.java:5170)
W/System.err( 3485): at com.android.server.pm.PackageManagerService.saveHash(PackageManagerService.java:19974)
W/System.err( 3485): at com.android.server.pm.PackageManagerService.access$5800(PackageManagerService.java:352)
W/System.err( 3485): at com.android.server.pm.PackageManagerService$21.run(PackageManagerService.java:19959)
W/System.err( 3485): Caused by: android.system.ErrnoException: open failed: EISDIR (Is a directory)
W/System.err( 3485): at libcore.io.IoBridge.open(IoBridge.java:446)
W/System.err( 3485): ... 5 more
W/System.err( 3485): remove failed: ENOENT (No such file or directory) : /data/system/packages.xml.bak
W/System.err( 3485): remove failed: ENOENT (No such file or directory) : /data/system/users/0/package-restrictions.xml.bak
D/PackageManager( 3485): New package installed
Though the application then installs successfully but there are rendering issue's when i start the app.
In-case you need some other information on the error let me know.

AccessibilityService is Destroyed when uiautomator is run

I am new to android and I am trying to explore the AccessibilityService. I have extended the AccessibilityService class, which gets the AccessibilityEvents and I am able to use the events.
I see a problem when I run "uiautomator dump". My AccessibilityService gets destroyed and I do not get any Accessibility Events. Is there a way to work around this problem?
Any help or suggestion appreciated. Thank you very much in advance.
The stack trace is attached below:
W/System.err( 3832): at com.example.myservice.MyAccessibilityService.onUnbind(MyAccessibilityService.java:185)
W/System.err( 3832): at android.app.ActivityThread.handleUnbindService(ActivityThread.java:2629)
W/System.err( 3832): at android.app.ActivityThread.access$1800(ActivityThread.java:141)
W/System.err( 3832): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1348)
W/System.err( 3832): at android.os.Handler.dispatchMessage(Handler.java:99)
W/System.err( 3832): at android.os.Looper.loop(Looper.java:137)
W/System.err( 3832): at android.app.ActivityThread.main(ActivityThread.java:5103)
W/System.err( 3832): at java.lang.reflect.Method.invokeNative(Native Method)
W/System.err( 3832): at java.lang.reflect.Method.invoke(Method.java:525)
W/System.err( 3832): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
W/System.err( 3832): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
W/System.err( 3832): at dalvik.system.NativeStart.main(Native Method)

UiAutomator can't be used along with an AccessibilityService. When you turn on the service the uiAutomator will crash.
However, as UiAutomator 2.0 is based on instrumentation you will probably be able to access the information you need without the service.

I faced the same problem & just found out the solution from here.
The answer was written in Kotlin so I modified mine here as I am writing in Java:
int flags = UiAutomation.FLAG_DONT_SUPPRESS_ACCESSIBILITY_SERVICES;
Configurator.getInstance().setUiAutomationFlags(flags);
mDevice = UiDevice.getInstance(getInstrumentation());

Please try with uiautomator2 having version above 18 and make disable supress accessibility service flag as true, which ll run accessibility service as well as driver seamlessly without terminating.

You could switch to UiAutmator2 with following code from appium-uiautomator2-server:
private void setAccessibilityServiceState() {
if (Build.VERSION.SDK_INT < Build.VERSION_CODES.N) {
return;
}
Configurator.getInstance().setUiAutomationFlags(
UiAutomation.FLAG_DONT_SUPPRESS_ACCESSIBILITY_SERVICES);
} else {
// We can disable UiAutomation.FLAG_DONT_SUPPRESS_ACCESSIBILITY_SERVICES
// only when we set the value as zero
Configurator.getInstance().setUiAutomationFlags(0);
}
}

GoogleAuthUtil.getToken SecurityException

I was getting this failure on a ICS device with latest Google Play Services when trying to call GoogleAuthUtil.getToken(args). The issue was resolved by removing and adding Google account to the phone. I wasn't able to reproduce the error. Google searching stack trace provided no insights. Any ideas on how this issue could be prevented and what it means are appreciated!
W/System.err( 3145): java.lang.SecurityException: Permission Denial: reading com.google.android.gsf.gservices.GservicesProvider uri content://com.google.android.gsf.gservices/prefix from pid=3145, uid=10055 requires com.google.android.providers.gsf.permission.READ_GSERVICES
W/System.err( 3145): at android.os.Parcel.readException(Parcel.java:1327)
W/System.err( 3145): at android.os.Parcel.readException(Parcel.java:1281)
W/System.err( 3145): at com.google.android.gms.internal.a$a$a.a(Unknown Source)
W/System.err( 3145): at com.google.android.gms.auth.GoogleAuthUtil.getToken(Unknown Source)
W/System.err( 3145): at com.google.android.gms.auth.GoogleAuthUtil.getToken(Unknown Source)
W/System.err( 3145): at com.xxxxx.Backend.obtainSheetKeyAndInitService(Backend.java:112)
W/System.err( 3145): at com.xxxxx.Backend.fetchColumns(Backend.java:103)
W/System.err( 3145): at com.xxxxx.ProgressActivity$DummySectionFragment$3.doInBackground(ProgressActivity.java:288)
W/System.err( 3145): at com.xxxxx.ProgressActivity$DummySectionFragment$3.doInBackground(ProgressActivity.java:1)
W/System.err( 3145): at android.os.AsyncTask$2.call(AsyncTask.java:264)
W/System.err( 3145): at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:305)
W/System.err( 3145): at java.util.concurrent.FutureTask.run(FutureTask.java:137)
W/System.err( 3145): at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:208)
W/System.err( 3145): at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076)
W/System.err( 3145): at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569)
W/System.err( 3145): at java.lang.Thread.run(Thread.java:856)
EDIT
As of time of reporting the bug:
google_play_services-lib android:versionName="3.2.65 (834000-30)"
Google Play Services version on device 4.0.31
Updated library to 4.0.30 and added requested permission to Manifest which seems to have worked. Waiting for Google to confirm that new library version fixes this issue because adding a new permission is a highly undesirable fix.
Bug report: http://code.google.com/p/android/issues/detail?id=61934

You should add
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
to the AndroidManifest.xml file. Thats all.

Today 2013-11-14 there has been a large drop in the number of error reports we have received due to this exception. Also I see Google Play Services version 4.0.33 is out, I didn't notice exactly when that released but it looks like yesterday.
Perhaps Google released a fix in 4.0.33? That would be great!
If anyone has been able to reproduce this bug, please let us know if 4.0.33 fixes it for you. (We have never been able to reproduce the bug on a dev device, although we have have zillions of traces from our installed base.)
[UPDATE] Google has definitely pushed a fix, we had only a handful of reports on 11/15 and zero on 11/16

HttpClient fails at execute method

It must be some idiotic thing that I am doing but I could not get it what is the problem...
My code snippet
try {
HttpClient client = new DefaultHttpClient();
HttpGet request = new HttpGet("http://somehost/WS2/Upload.aspx?one=valueGoesHere");
client.execute(request);//it fails at this line
} catch (Exception e) {
and in my manifest I have internet access permission
from console
W/System.err( 4210): java.net.UnknownHostException: somehost
W/System.err( 4210): at java.net.InetAddress.lookupHostByName(InetAddress.java:513)
W/System.err( 4210): at java.net.InetAddress.getAllByNameImpl(InetAddress.java:278)
W/System.err( 4210): at java.net.InetAddress.getAllByName(InetAddress.java:242)
W/System.err( 4210): at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:136)
W/System.err( 4210): at org.apache.http.impl.conn.AbstractPoolEntry.open(AbstractPoolEntry.java:164)
W/System.err( 4210): at org.apache.http.impl.conn.AbstractPooledConnAdapter.open(AbstractPooledConnAdapter.java:119)
W/System.err( 4210): at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:348)
W/System.err( 4210): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:555)
W/System.err( 4210): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:487)
W/System.err( 4210): at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:465)
W/System.err( 4210): at com.temp.services.httpclient.HttpGetDemo.onCreate(HttpGetDemo.java:29)
W/System.err( 4210): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1069)
W/System.err( 4210): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2751)
W/System.err( 4210): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2803)
W/System.err( 4210): at android.app.ActivityThread.access$2300(ActivityThread.java:135)
W/System.err( 4210): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2136)
W/System.err( 4210): at android.os.Handler.dispatchMessage(Handler.java:99)
W/System.err( 4210): at android.os.Looper.loop(Looper.java:144)
W/System.err( 4210): at android.app.ActivityThread.main(ActivityThread.java:4937)
W/System.err( 4210): at java.lang.reflect.Method.invokeNative(Native Method)
W/System.err( 4210): at java.lang.reflect.Method.invoke(Method.java:521)
W/System.err( 4210): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
W/System.err( 4210): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
W/System.err( 4210): at dalvik.system.NativeStart.main(Native Method)
I/ActivityManager( 120): Displayed activity com.temp.services/.httpclient.HttpGetDemo: 119 ms (total 304 ms)

Try to add the following before your http request code
StrictMode.ThreadPolicy policy = new StrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);

Don't forget to declare the INTERNET permission in the Android manifest:
<uses-permission android:name="android.permission.INTERNET"/>

You should make sure your are not running on your main thread, check if you get this exception:
android.os.NetworkOnMainThreadException

ok, What about trying this :
URL uri = new URL(rootUri);
HttpURLConnection connection = (HttpURLConnection) uri.openConnection();
connection.setRequestMethod("GET");
connection.setDoInput(true);
connection.connect();

Do you execute this request in the emulator or on an android device ?
if it's on the emulator, maybe the internet connection is not shared with it.
If it's on an android device, seems you don't have internet access ( not the permission, just the access )

Assuming that the URL is a valid one, I suggest that you should call :
try {
InetAddress address = InetAddress.getByName(url);
} catch (UnknownHostException e) {
e.printStackTrace();
}
This is DNS pre-fetching so that your device can resolve it URl to an IP address.
Although this isn't enough for it to guarantee to work. What actually worked for me is a retrying mechanism. Give it some good old F5 F5 F5 F5 till the website responds :D

The Problem is with URL.As it shows in Log Exception is
java.net.UnknownHostException: somehost
Try with your true URL.
& BTW www.google.com works fine