Android View for printing private logs in realtime, supports lifecycle methods (start->stop)

LogView.java

import android.app.Activity;
import android.content.Context;
import android.content.ContextWrapper;
import android.support.annotation.LayoutRes;
import android.util.AttributeSet;
import android.view.LayoutInflater;
import android.view.ViewGroup;
import android.widget.FrameLayout;
import android.widget.ScrollView;
import android.widget.TextView;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.concurrent.atomic.AtomicBoolean;

import butterknife.BindView;
import butterknife.ButterKnife;
import rx.Completable;
import rx.functions.Action1;
import rx.schedulers.Schedulers;

/**
 * View for printing private logs in realtime.
 * Uses RxJava and ButterKnife. Inflates itself.
 *
 * Scrolls to bottom on new log
 *
 * @author Pär Amsen 05/2017
 */
public class LogView extends FrameLayout {
    @BindView(R.id.logs)
    TextView logs;
    @BindView(R.id.scrollView)
    ScrollView scrollView;

    private AtomicBoolean started;
    private StringBuilder sb;

    public LogView(Context context, AttributeSet attrs) {
        super(context, attrs);
        init(context);
    }

    public void init(Context context) {
        started = new AtomicBoolean(false);
        sb = new StringBuilder();

        inflateCustomView(context, this, R.layout.view_log, activity -> ButterKnife.bind(this));
    }

    public void start() {
        Completable.create(sub -> {
            started.set(true);

            try {
                Runtime.getRuntime().exec("logcat -c");
                Process pq = Runtime.getRuntime().exec("logcat v main");
                BufferedReader stream = new BufferedReader(new InputStreamReader(pq.getInputStream()));
                String log = "";
                while (started.get() && (log = stream.readLine()) != null) {
                    final String temp = log;
                    RxUtils.doOnMain(() -> log(truncate(temp)));
                }
                sub.onCompleted();
            } catch (Exception e) {
                sub.onError(e);
            }
        }).subscribeOn(Schedulers.newThread()).subscribe(Throwable::printStackTrace, RxUtils::ignore);
    }

    public String truncate(String log) {
        return log.replaceFirst("([\\d-\\s:.]*)", "");
    }

    public void log(String log) {
        sb.append(log).append("\n");
        logs.setText(sb.toString());
        scrollView.smoothScrollTo(0, logs.getBottom());
    }

    public void stop() {
        started.set(false);
    }

    public static void inflateCustomView(Context context, ViewGroup root, @LayoutRes int layout, Action1<Activity> onInflated) {
        if (root.isInEditMode()) {
            ((LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(layout, root, true);
            return;
        }

        Activity activity = getActivityFromContextWrapper(context);
        activity.getLayoutInflater().cloneInContext(context).inflate(layout, root, true);
        onInflated.call(activity);
    }

    public static Activity getActivityFromContextWrapper(Context context) {
        Activity activity = null;

        if (context instanceof Activity) {
            activity = (Activity) context;
        } else if (context instanceof ContextWrapper && ((ContextWrapper) context).getBaseContext() instanceof Activity) {
            activity = (Activity) ((ContextWrapper) context).getBaseContext();
        } else if (context instanceof ContextWrapper && ((ContextWrapper) context).getBaseContext() instanceof ContextWrapper) {
            activity = getActivityFromContextWrapper(((ContextWrapper) context).getBaseContext());
        }

        if (activity == null) {
            getActivityFromContextWrapper(context);
        }

        return activity;
    }
}

view_log.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
            xmlns:tools="http://schemas.android.com/tools"
            android:id="@+id/scrollView"
            android:layout_width="wrap_content"
            android:layout_height="match_parent">

    <TextView
        android:id="@+id/logs"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        tools:text="@string/long_text"
        android:textSize="8sp"/>
</ScrollView>

Do you have any sample project that implements this? im having some difficulties

can you check implements library name?

how do i add implementation library at my android project?