进度条ProgressBar属性

xml

java

package com.example.android_01;

import androidx.appcompat.app.AppCompatActivity;

import android.media.Ringtone;
import android.os.Bundle;
import android.util.Log;
import android.view.MotionEvent;
import android.view.View;
import android.widget.EditText;
import android.widget.ProgressBar;
import android.widget.TextView;

public class MainActivity extends AppCompatActivity {
    private ProgressBar progressBar;
    private ProgressBar progressBar2;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        progressBar = findViewById(R.id.pb);
        progressBar2 = findViewById(R.id.pb2);

    }

    public void leoClick(View view) {
        if (progressBar.getVisibility() == View.GONE){
            progressBar.setVisibility(View.VISIBLE);
        }else{
            progressBar.setVisibility(View.GONE);
        }
    }

    public void download(View view) {
       int progress=progressBar2.getProgress();
       progress+=10;
       progressBar2.setProgress(progress);
    }
}

效果图