A utility class for ADB

ADBUtil.java

import java.io.File;
import java.io.FileReader;
import java.io.IOException;
import java.util.Properties;
import java.util.Scanner;

import static com.automation.util.FileUtil.readPropertyFile;

/**
 * Created by Sundeep Machado on 09/09/16.
 */
public class ADBUtil {
    public static ProcessBuilder pb = null;
    public static Process pc = null;


    public static void printADBLog( String tag ){
        Properties prop = readPropertyFile();
        clearADBLogs();
        pb = new ProcessBuilder("adb", "logcat", "-s", tag);
        File output = new File(prop.getProperty("adbLogFile"));

        if(output.delete()){
            System.out.println("ADB File Deleted");
        }
        pb.redirectOutput(output);
        try {
            pc =  pb.start();
        } catch (IOException e) {
            e.printStackTrace();
        }


    }


    /**
     * Clear the ADB logcat
     */
    public static void clearADBLogs(){

        pb = new ProcessBuilder("adb", "logcat", "-c");
        try {
            pc =  pb.start();
        } catch (IOException e) {
            e.printStackTrace();
        }
        pc.destroy();

    }

    /**
     * Stop the ADB logging service
     * @throws IOException
     */
    public static void stopADBLogger() throws IOException {

    pc.destroy();

    }

    /**
     * This function waits till the ADb tag is present in log file
     */

    public static void waitTillTagPresent(String f, String searchString){

        boolean result = false;
        Scanner in = null;
        do {
            try {
                in = new Scanner(new FileReader(f));
                while (in.hasNextLine() && !result) {
                    result = in.nextLine().indexOf(searchString) >= 0;
                }
            } catch (IOException e) {
                e.printStackTrace();
            } finally {
                try {
                    in.close();
                } catch (Exception e) { /* ignore */ }
            }
        }
        while (result=false);

    }

}