Auto-start service instance for Android

Recently, the hevsocks5client was ported to Android, and after increased SIGNALFD and TIMERFD related system call support, it was possible to compile executable directly using the NDK. Direct native exectuable on Android is not always easy to use OH. Or make an apk, tentatively write only one service and boot automatically enabled, no activity.

Calling the native program in Java I chose to use the JNI approach, calling Pthread_create directly in the Jni_onload method to create a thread to run the original main line.

... #if defined (ANDROID) #include <jni.h> #include <pthread.h> #endifintmain (int argc, char *argv[]) {    ...} #if defined (ANDROID) static void *thread_handler (void *data) {    main (0, NULL);    return NULL;} Jintjni_onload (JAVAVM *vm, void *reserved) {    pthread_t thread;    Pthread_create (&thread, NULL, Thread_handler, NULL);    return jni_version_1_4;} #endif

　　

Android Services

The service is primarily the Hev-socks5-client library that loads the JNI interface, which makes the service run up.

Package Hev.socks5;import Android.app.service;import Android.content.intent;import android.os.ibinder;import Android.util.log;public class Mainservice extends Service {        static {                system.loadlibrary ("Hev-socks5-client") ;        }        Public IBinder Onbind (Intent Intent) {                return null;        }}

　　

Broadcastreceiver

The function of servicereceiver is to monitor the Boot_completed event on the system for automatic start-up service.

Package Hev.socks5;import Android.content.broadcastreceiver;import Android.content.context;import Android.content.intent;public class Servicereceiver extends Broadcastreceiver {        @Override public        Void OnReceive (context context, Intent Intent) {                if (intent.getaction (). Equals (intent.action_boot_completed)) {                        Intent i = new Intent (context, mainservice.class);                        Context.startservice (i);}}        }

　　

Androidmanifest.xml

Finally, to register Service and Receiver in Manifest, increase access to the Internet and Boot completed.

<?XML version= "1.0" encoding= "Utf-8"?><Manifestxmlns:android= "Http://schemas.android.com/apk/res/android" Package= "HEV.SOCKS5"Android:versioncode= "1"Android:versionname= "1.0">        <ApplicationAndroid:label= "@string/app_name" >                <ServiceAndroid:name=". Mainservice ">                        <Intent-filter>                                <ActionAndroid:name= "Hev.socks5.MainService" />                        </Intent-filter>                </Service>                <receiverandroid:enabled= "true"Android:name=". Servicereceiver ">                        <Intent-filter>                                <ActionAndroid:name= "Android.intent.action.BOOT_COMPLETED" />                        </Intent-filter>                </receiver>        </Application>        <uses-permissionAndroid:name= "Android.permission.INTERNET" />        <uses-permissionAndroid:name= "Android.permission.RECEIVE_BOOT_COMPLETED" /></Manifest>

Tips

This method is only valid on Android 2.3.3 and before version, if this app has never run after installation, broadcast receiver will not receive the boot completed action, the workaround is to start the service manually using the command.

Am StartService hev.socks5/. Mainservice

　　

Auto-start service instance for Android