ProgressDialog进度条更改文件单位

野性酷女 2023-02-12 05:39 8阅读 0赞

# ProgressDialog进度条更改文件单位 #

## 效果图 ##

![效果图][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTEzNjg1NTE_size_16_color_FFFFFF_t_70_pic_center]

## 重点部分 ##

重点方法：setProgressNumberFormat

DownLoadRunnable：模拟下载线程

package com.demo.progress;
    
    /**
     * Created by talon on 2020/5/20
     * note: 模拟下载线程
     */
    public class DownLoadRunnable implements Runnable {
    
        // 模拟数据大小10M
        private long fileLength = 10 * 1024 * 1024;
        private UpdateCallBack updateCallBack;
    
        void setUpdateCallBack(UpdateCallBack callBack) {
            updateCallBack = callBack;
        }
    
        @Override
        public void run() {
    
            long curLength = 0;
    
    
            while (true) {
                try {
    
                    Thread.sleep(100);
    
                    curLength = curLength + 100000;
    
    
                    if (updateCallBack != null)
                        updateCallBack.updateProcess(fileLength, curLength);
    
                    if (curLength >= fileLength)
                        break;
    
                } catch (InterruptedException e) {
                    e.printStackTrace();
                }
            }
        }
    }

MainActivity: ProgressDialog的具体实现

package com.demo.progress;
    
    import android.app.ProgressDialog;
    import android.support.v7.app.AppCompatActivity;
    import android.os.Bundle;
    import android.view.View;
    
    import java.util.Locale;
    
    /**
     * Created by talon on 2020/5/20
     * note: progressDialog 显示百分比和文件大小
     */
    public class MainActivity extends AppCompatActivity implements UpdateCallBack {
    
        private ProgressDialog mProgressDialog;
        private DownLoadRunnable mDownLoadRunnable;
    
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            mDownLoadRunnable = new DownLoadRunnable();
            mDownLoadRunnable.setUpdateCallBack(this);
    
            mProgressDialog = new ProgressDialog(this);
            mProgressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
            mProgressDialog.setCancelable(false);
            mProgressDialog.setTitle("下载中...");
        }
    
        public void Start(View view) {
            mProgressDialog.show();
            new Thread(mDownLoadRunnable).start();
        }
    
        @Override
        public void updateProcess(final long all, final long cur) {
    
            runOnUiThread(new Runnable() {
                @Override
                public void run() {
    
                    if (cur >= all) {
                        mProgressDialog.dismiss();
                        return;
                    }
    
                    float allFloat = (float) all / 1024 / 1024;
                    float curFloat = (float) cur / 1024 / 1024;
                    mProgressDialog.setProgressNumberFormat(String.format(Locale.CHINA, "%.2fM/%.2fM", curFloat, allFloat));
    
                    mProgressDialog.setMax((int) all);
                    mProgressDialog.setProgress((int) cur);
    
                }
            });
    
        }
    
    
    }

UpdateCallBack： 线程和界面之间的桥梁

package com.demo.progress;
    
    /**
     * Created by talon on 2020/5/20
     * note: 接口通信-桥梁
     */
    public interface UpdateCallBack {
    
        void updateProcess(long all, long cur);
    
    }

## demo地址 ##

https://download.csdn.net/download/u011368551/12453905

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTEzNjg1NTE_size_16_color_FFFFFF_t_70_pic_center]: https://img-blog.csdnimg.cn/20200524162525139.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTEzNjg1NTE=,size_16,color_FFFFFF,t_70#pic_center