Java 我想创建一个在1分钟内填满进度条的应用程序，但它在前5秒内崩溃

这是布局文件 常规布局

 <?xml version="1.0" encoding="utf-8"?>
    <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity"
    android:orientation="horizontal"
    >

    <Button
        android:layout_width="wrap_content"
        android:layout_height="40dp"
        android:text="Press Me!"
        android:textAllCaps="false"
        android:id="@+id/button"
        />
    <ProgressBar
        android:layout_width="match_parent"
        android:layout_height="40dp"
        android:id="@+id/progressbar"
        style="@style/Widget.AppCompat.ProgressBar.Horizontal"
        />
</LinearLayout>

AsynTask类 应用程序在启动5秒后崩溃。 我希望进度条每5秒增加一次，以在1分钟内达到最大值

import android.content.Context;
import android.os.AsyncTask;
import android.view.View;
import android.widget.ProgressBar;

public class AsynTaskTest extends AsyncTask<Void, Integer, Void>{
    ProgressBar progressBar;
    Context context;
    int count = 1;
    int update = 5;

    public AsynTaskTest(Context context){
        this.context = context;
    }

    @Override
    protected Void doInBackground(Void... voids) {

        while(count <= 11){
            try {
                Thread.sleep(5000);
                int progress = (update*100)/60;
                publishProgress(progress);
                update += 5;
                count++;
            } catch (InterruptedException e) {
                e.printStackTrace();
            }

        }

        return null;
    }

    @Override
    protected void onPreExecute() {
        super.onPreExecute();
    }

    @Override
    protected void onPostExecute(Void aVoid) {
        progressBar.setVisibility(View.GONE);
    }

    @Override
    protected void onProgressUpdate(Integer... values) {
        progressBar.setProgress(values[0]);
    }
}

导入android.content.Context；
导入android.os.AsyncTask；
导入android.view.view；
导入android.widget.ProgressBar；
公共类AsynTaskTest扩展了AsyncTask{
ProgressBar ProgressBar；
语境；
整数计数=1；
int更新=5；
公共AsynTaskTest（上下文）{
this.context=上下文；
}
@凌驾
受保护的空位背景（空位…空位）{
而（count更改代码如下

public class AsynTaskTest extends AsyncTask<Void, Integer, Void> {
ProgressBar progressBar;
Context context;
int count = 1;
int update = 5;

public AsynTaskTest(Context context ,  ProgressBar progressBar){
    this.context = context;
    this.progressBar = progressBar;
}

@Override
protected Void doInBackground(Void... voids) {

    while(count <= 11){
        try {
            Thread.sleep(5000);
            int progress = (update*100)/60;
            publishProgress(progress);
            update += 5;
            count++;
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

    }

    return null;
}

@Override
protected void onPreExecute() {
    super.onPreExecute();
}

@Override
protected void onPostExecute(Void aVoid) {
    progressBar.setVisibility(View.GONE);
}

@Override
protected void onProgressUpdate(Integer... values) {
    progressBar.setProgress(values[0]);
}
}

什么是stacktrace？
public class AsynTaskTest extends AsyncTask<Void, Integer, Void> {
ProgressBar progressBar;
Context context;
int count = 1;
int update = 5;

public AsynTaskTest(Context context ,  ProgressBar progressBar){
    this.context = context;
    this.progressBar = progressBar;
}

@Override
protected Void doInBackground(Void... voids) {

    while(count <= 11){
        try {
            Thread.sleep(5000);
            int progress = (update*100)/60;
            publishProgress(progress);
            update += 5;
            count++;
        } catch (InterruptedException e) {
            e.printStackTrace();
        }

    }

    return null;
}

@Override
protected void onPreExecute() {
    super.onPreExecute();
}

@Override
protected void onPostExecute(Void aVoid) {
    progressBar.setVisibility(View.GONE);
}

@Override
protected void onProgressUpdate(Integer... values) {
    progressBar.setProgress(values[0]);
}
}

  button.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
            AsynTaskTest asynTaskTest = new AsynTaskTest(v.getContext() , progressBar);
            asynTaskTest.execute();
        }
    });