Android implements dynamic visible and hidden progress bar

(this, new () {
                @Override
                public void progress(int count) {
                    (count + "%");
                }
            }); 

package com.coral3.common_module.utils;

import ;
import ;
import ;
import ;
import ;
import ;
import ;
import ;
import ;
import com.coral3.common_module.R;
import ;
import ;
import ;

public class ProgressUtil {

    private static View progressContainer;
    private static TextView tvView;
    private static ProgressBar progressView;
    private static ViewGroup contentView;
    private static Timer timer = new Timer();
    private static TimerTask task;
    private static int count = 0;
    private static ICallback myICallback;
    private static Handler handler = new Handler(new (){

        @Override
        public boolean handleMessage(Message msg) {
            if( == 0x1){
                count++;
                (count);
                (count + "%");
                (count);
            }
            return false;
        }
    });

    public static void startProgress(Context context, ICallback iCallback){
        if(null == contentView) contentView = ((Activity)context).findViewById();
        if (progressContainer == null) {
            progressContainer = (context).inflate(.view_progress, null, false);
            progressView = (.pb_common);
            tvView = (.tv_progress);
            (progressContainer);
        } else {
            ();
        }
        myICallback = iCallback;
        task = new TimerTask() {
            @Override
            public void run() {

                if(count > 99){
                    hideProgressInUiThread((Activity) context);
                }else{
                    (0x1);
                }
            }
        };
        if(timer == null) timer = new Timer();
        (task, 10, 1000/60);
    }

    public static void endTimer(){
        ();
        ();
        task = null;
        timer = null;
        count = 0;
    }

    public static void hideProgress(){
        if (progressContainer != null) {
            endTimer();
            ();
        }
    }

    public static void startProgressInUiThread(Context context, ICallback iCallback){
        ((Activity)context).runOnUiThread(new Runnable() {
            @Override
            public void run() {
                startProgress(context, iCallback);
            }
        });
    }

    public static void hideProgressInUiThread(Activity activity){
        (new Runnable() {
            @Override
            public void run() {
                hideProgress();
            }
        });
    }

    public interface ICallback{
        void progress(int count);
    }
}

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:andro
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">
        <LinearLayout
            android:layout_width="match_parent"
            android:orientation="vertical"
            android:gravity="center"
            android:padding="8dp"
            android:layout_height="match_parent">
            <ProgressBar android:
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:progress="10"
                style="@style/"></ProgressBar>
            <TextView
                android:
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="0%"/>
        </LinearLayout>

</RelativeLayout>