Is there a way to get current process name in Android

Question

I set an Android:process=\":XX\" for my particular activity to make it run in a separate process. However when the new activity/process init, it will call my Application:onC

Answer 1

To wrap up different approaches of getting process name using Kotlin:

Based on the https://stackoverflow.com/a/21389402/3256989 (/proc/pid/cmdline):

    fun getProcessName(): String? =
        try {
            FileInputStream("/proc/${Process.myPid()}/cmdline")
                .buffered()
                .readBytes()
                .filter { it > 0 }
                .toByteArray()
                .inputStream()
                .reader(Charsets.ISO_8859_1)
                .use { it.readText() }
        } catch (e: Throwable) {
            null
        }

Based on https://stackoverflow.com/a/55549556/3256989 (from SDK v.28 (Android P)):

  fun getProcessName(): String? = 
    if (VERSION.SDK_INT >= VERSION_CODES.P) Application.getProcessName() else null

Based on https://stackoverflow.com/a/45960344/3256989 (reflection):

    fun getProcessName(): String? =
        try {
            val loadedApkField = application.javaClass.getField("mLoadedApk")
            loadedApkField.isAccessible = true
            val loadedApk = loadedApkField.get(application)

            val activityThreadField = loadedApk.javaClass.getDeclaredField("mActivityThread")
            activityThreadField.isAccessible = true
            val activityThread = activityThreadField.get(loadedApk)

            val getProcessName = activityThread.javaClass.getDeclaredMethod("getProcessName")
            getProcessName.invoke(activityThread) as String
        } catch (e: Throwable) {
            null
        }

Based on https://stackoverflow.com/a/19632382/3256989 (ActivityManager):

    fun getProcessName(): String? {
        val pid = Process.myPid()
        val manager = appContext.getSystemService(Context.ACTIVITY_SERVICE) as? ActivityManager
        return manager?.runningAppProcesses?.filterNotNull()?.firstOrNull { it.pid == pid }?.processName
    }