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java.lang.UnsatisfiedLinkError: dlopen failed: library "libpthread.so.0" not found

Im trying to make an app for serial comminucation with android
im using rxtx library
Unfortunately i got a problem in my project
Thats my Logcat error :
java.lang.UnsatisfiedLinkError: dlopen failed: library "libpthread.so.0" not found
at java.lang.Runtime.loadLibrary0(Runtime.java:1016)
at java.lang.System.loadLibrary(System.java:1669)
at gnu.io.LibraryLoader.loadRxtxNative(LibraryLoader.java:32)
at gnu.io.CommPortIdentifier.<clinit>(CommPortIdentifier.java:118)
at gnu.io.CommPortIdentifier.getPortIdentifier(Unknown Source:0)
at com.example.pooya.myapplication.Connection.open(Connection.java:145)
at com.example.pooya.myapplication.MainActivity$1.onClick(MainActivity.java:37)
at android.view.View.performClick(View.java:6597)
at android.view.View.performClickInternal(View.java:6574)
at android.view.View.access$3100(View.java:778)
at android.view.View$PerformClick.run(View.java:25885)
at android.os.Handler.handleCallback(Handler.java:873)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
i added the libpthread.so.0 file to my jnilibs (all subfolders) but the result is same.
please give me a hint to solve this problem

There is no libpthread.so on Android, all threading functions are handled by libc itself. It seems the RxTx library does not support the Android platform.
You can try porting it yourself or use another solution:
Android Things API
Android USB Host API
RxTx Android port (warning: last update 2011)
android-serialport-api (warning: last update 2011)
usb-serial-for-android (last update 2016)

How to fix java.lang.SecurityException: Caller lacks required permission com.google.android.things.permission.USE_PERIPHERAL_IO error?

I am trying to get an Android Things project to build and run on a Raspberry Pi 3. The files are found here. I am connected to my Raspberry Pi 3 via Ethernet. I plugged the ethernet cable directly from my laptop to the rPi and used Internet Sharing. I then used adb connect to connect to the device and it successfully connects.
I am running:
Android Studio 3.1.2
Build #AI-173.4720617, built on April 13, 2018
JRE: 1.8.0_152-release-1024-b01 x86_64
JVM: OpenJDK 64-Bit Server VM by JetBrains s.r.o
Mac OS X 10.12.6
Changes were made to Android Studio so I had to change some code around. I downloaded the files and updated the PeripheralManagerService to PeripheralManager instead.
PeripheralManager pioService = PeripheralManager.getInstance();
When I click the Run button, I get the following error (please keep in mind that I already added the following permission to Android Manifest file above the application section):
<uses-permission android:name="com.google.android.things.permission.USE_PERIPHERAL_IO"/>
Please help me with figure out what I am still missing. Thanks!
06-08 01:43:28.746 3598-3598/? I/zygote: Late-enabling -Xcheck:jni 06-08 01:43:28.993 3598-3598/apps.hackstermia.buttonthings I/MainActivity: Starting ButtonActivity
06-08 01:43:29.013 3598-3598/apps.hackstermia.buttonthings I/MainActivity: Configuring GPIO pins
06-08 01:43:29.017 3598-3598/apps.hackstermia.buttonthings D/AndroidRuntime: Shutting down VM
06-08 01:43:29.028 3598-3598/apps.hackstermia.buttonthings E/AndroidRuntime: FATAL EXCEPTION: main
Process: apps.hackstermia.buttonthings, PID: 3598
java.lang.RuntimeException: Unable to start activity ComponentInfo{apps.hackstermia.buttonthings/apps.hackstermia.buttonthings.MainActivity}: java.lang.SecurityException: Caller lacks required permission com.google.android.things.permission.USE_PERIPHERAL_IO
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2778)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2856)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
Caused by: java.lang.SecurityException: Caller lacks required permission com.google.android.things.permission.USE_PERIPHERAL_IO
at android.os.Parcel.readException(Parcel.java:2005)
at android.os.Parcel.readException(Parcel.java:1951)
at com.google.android.things.pio.IPeripheralManagerClient$Stub$Proxy.GetGpioClient(IPeripheralManagerClient.java:759)
at com.google.android.things.pio.GpioImpl.<init>(GpioImpl.java:50)
at com.google.android.things.pio.PeripheralManager.openGpio(PeripheralManager.java:197)
at apps.hackstermia.buttonthings.MainActivity.onCreate(MainActivity.java:26)
at android.app.Activity.performCreate(Activity.java:7010)
at android.app.Activity.performCreate(Activity.java:7001)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1214)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2731)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2856) 
at android.app.ActivityThread.-wrap11(Unknown Source:0) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589) 
at android.os.Handler.dispatchMessage(Handler.java:106) 
at android.os.Looper.loop(Looper.java:164) 
at android.app.ActivityThread.main(ActivityThread.java:6494) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807) 
06-08 01:43:29.047 3598-3598/apps.hackstermia.buttonthings I/Process: Sending signal. PID: 3598 SIG: 9

At first, following lines should be included by AndroidManifest just before application tag
<uses-permission android:name="com.google.android.things.permission.USE_PERIPHERAL_IO" />
<uses-permission android:name="com.google.android.things.permission.MANAGE_INPUT_DRIVERS" />
Then, if you install application via adb, you should install <APK> with -g option as follow as recomended by #Devunwired here
adb install -g <APK>

friends~!
I had the same problem with my Android Studio 3.1.3 and RaspberryPi 3 and AndroidThings. This platform was killing my "blink" app, because I had a lacks permission of "[..] USE_PERIPHERAL_IO".
For my problem, the solution was adding this sentence:
<uses-permission android:name="com.google.android.things.permission.USE_PERIPHERAL_IO"/>
<uses-permission android:name="com.google.android.things.permission.MANAGE_INPUT_DRIVERS" />
to my Android Manifest file.
Thanks, anyone for help :))

Thanks for your input everyone.
I found out that the permission in the manifest file needs to be a direct child, or outside of the application

I had the same issue. Tried different approaches as mentioned above. What really works for me
1. update your android studio to the latest version. Mine was 3.0.1. After upgrade, it is 3.1.3
2. update the os version of android things to the latest. It was 0.6. After upgrade, it is 1.0.1.
3. Set those permission in android manifest
<uses-permission android:name="com.google.android.things.permission.USE_PERIPHERAL_IO"/>
<uses-permission android:name="com.google.android.things.permission.MANAGE_INPUT_DRIVERS" />
hope those steps will make your android things working

Depending on the version of Android Studio, the prisons are applied and granted on upgrades and installs or only on installs (on older versions)
Rebooting the device should fix it, uninstalling and reinstalling the app should also fix it.

Android Studio Permission Denial

I am not sure if this is the right place to ask this question but I can't find help anywhere. I'm trying to get this application to work but I've run into some errors.
Clicking "Open gallery" button immediately crashes whole app with this error:
FATAL EXCEPTION: main
Process: com.niel.galleryphotoapp, PID: 3691
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.niel.galleryphotoapp/com.niel.galleryphotoapp.HomeFragmentActivity}: java.lang.SecurityException: Permission Denial: reading com.android.providers.media.MediaProvider uri content://media/external/images/media from pid=3691, uid=10086 requires android.permission.READ_EXTERNAL_STORAGE, or grantUriPermission()
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2665)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
Caused by: java.lang.SecurityException: Permission Denial: reading com.android.providers.media.MediaProvider uri content://media/external/images/media from pid=3691, uid=10086 requires android.permission.READ_EXTERNAL_STORAGE, or grantUriPermission()
at android.os.Parcel.readException(Parcel.java:1684)
at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:183)
at android.database.DatabaseUtils.readExceptionFromParcel(DatabaseUtils.java:135)
at android.content.ContentProviderProxy.query(ContentProviderNative.java:421)
at android.content.ContentResolver.query(ContentResolver.java:532)
at android.content.ContentResolver.query(ContentResolver.java:474)
at com.niel.galleryphotoapp.DeviceImageManager.getPhoneAlbums(DeviceImageManager.java:34)
at com.niel.galleryphotoapp.HomeFragmentActivity.onCreate(HomeFragmentActivity.java:80)
at android.app.Activity.performCreate(Activity.java:6679)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2618)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726) 
at android.app.ActivityThread.-wrap12(ActivityThread.java) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:154) 
at android.app.ActivityThread.main(ActivityThread.java:6119) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776) 
I don't know why it is happening, I checked the manifest and it seems the required permissions are there.
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
I'm using Android Studio 2.3.3 + Nexus 4 API 25 emulator.

Although you have included permissions in your manifest, you also need to request runtime permissions as well. Everything you need to know is here:
https://developer.android.com/training/permissions/requesting.html

As cjnash said, you need to ask for runtime permissions as well. If you need a quick way just to try it, you can go in your device settings and manually give your app the permissions it needs to run.

Android Studio error at com.kami2017.app.MainActivity.onCreate

Error:
02/01 14:12:04: Launching app
$ adb push /Users/Kamran/AndroidStudioProjects/App/app/build/outputs/apk/app-debug.apk /data/local/tmp/com.kami2017.app
$ adb shell pm install -r "/data/local/tmp/com.kami2017.app"
Success
$ adb shell am start -n "com.kami2017.app/com.kami2017.app.MainActivity" -a android.intent.action.MAIN -c android.intent.category.LAUNCHER
Client not ready yet..Waiting for process to come online
Connected to process 2284 on device emulator-5554
W/System: ClassLoader referenced unknown path: /data/app/com.kami2017.app-1/lib/x86
[ 02-01 14:12:28.511 1531: 1552 D/ ]
HostConnection::get() New Host Connection established 0x85a8d240, tid 1552
I/InstantRun: Instant Run Runtime started. Android package is com.kami2017.app, real application class is null.
W/System: ClassLoader referenced unknown path: /data/app/com.kami2017.app-1/lib/x86
W/art: Before Android 4.1, method android.graphics.PorterDuffColorFilter android.support.graphics.drawable.VectorDrawableCompat.updateTintFilter(android.graphics.PorterDuffColorFilter, android.content.res.ColorStateList, android.graphics.PorterDuff$Mode) would have incorrectly overridden the package-private method in android.graphics.drawable.Drawable
D/AndroidRuntime: Shutting down VM
--------- beginning of crash
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.kami2017.app, PID: 2284
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.kami2017.app/com.kami2017.app.MainActivity}: java.lang.NullPointerException: Attempt to invoke virtual method 'android.webkit.WebSettings android.webkit.WebView.getSettings()' on a null object reference
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2665)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726)
at android.app.ActivityThread.-wrap12(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.webkit.WebSettings android.webkit.WebView.getSettings()' on a null object reference
at com.kami2017.app.MainActivity.onCreate(MainActivity.java:17)
at android.app.Activity.performCreate(Activity.java:6679)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2618)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2726) 
at android.app.ActivityThread.-wrap12(ActivityThread.java) 
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1477) 
at android.os.Handler.dispatchMessage(Handler.java:102) 
at android.os.Looper.loop(Looper.java:154) 
at android.app.ActivityThread.main(ActivityThread.java:6119) 
at java.lang.reflect.Method.invoke(Native Method) 
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886) 
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776) 
Application terminated.

I think you did not give any id for your WebView in xml file. You are trying to access that WebView.
FYI please look into following link:
Getting void android.webkit.WebView.loadUrl while loading webview in dialog in Android?

Your webview is null. Have you created an instance for the webview from your xml file in your activity?
WebView myWebView = (WebView) findViewById(R.id.webview);
WebSettings webSettings = myWebView.getSettings();
Or you should create a new webview programmatically:
WebView webView = new WebView(this);

Unable to start Chrome CustomTabsIntent in my Android app

I am trying to use Chrome Custom Tabs in my Android application. My MainActivity class extends AppCompatActivity. In onCreate, I invoke startCustomTabs. Below is the code for that:
private void startCustomTab(){
CustomTabsIntent intent = new CustomTabsIntent.Builder().setToolbarColor(getResources().getColor(R.color.colorPrimary)).build();
intent.launchUrl(this, Uri.parse("http://github.com/black-dragon/SaavnExtractor"));
}
As soon as the app launches, it crashes with following the error:
11-16 10:55:38.561 30093-30093/com.nick.saavnextractor
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.nick.saavnextractor, PID: 30093
java.lang.NoSuchMethodError: No static method
startActivity(Landroid/app/Activity;Landroid/content/Intent;Landroid/os/Bundle;)V
in class Landroid/support/v4/app/ActivityCompat; or its super classes
(declaration of 'android.support.v4.app.ActivityCompat' appears in
/data/data/com.nick.saavnextractor/files/instant-run/dex/slice-com.android.support-support-compat-25.0.0_15c83dd4ec129d2d74bfda2e34f6aeeb93d83fa1-classes.dex)
at android.support.customtabs.CustomTabsIntent.launchUrl(CustomTabsIntent.java:262)
at com.nick.saavnextractor.MainActivity.startCustomTab(MainActivity.java:325)
at com.nick.saavnextractor.MainActivity.onCreate(MainActivity.java:111)
at android.app.Activity.performCreate(Activity.java:6311)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1118)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2409)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2539)
at android.app.ActivityThread.access$900(ActivityThread.java:159)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1384)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:148)
at android.app.ActivityThread.main(ActivityThread.java:5507)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Note: If I execute the same code with the same methods in a new app, the Custom Tabs launch fine.

Okay, so here is the resolution. I was using build tools version 25.0.0 but my SDK platform was 24.
Update the build tools, platform tools & SDK to same version and then you won't face this issue.

Along with #Nick's answer, I also had to update the Facebook SDK version and the crash stopped happening.

You need to add Customtabs dependency in your build.gradle file.
implementation 'com.android.support:customtabs:28.0.0'