ProgressDialog进度条更改文件单位

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ProgressDialog进度条更改文件单位

效果图

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10Mprivate long fileLength = 10 * 1024 * 1024;private UpdateCallBack updateCallBack;void setUpdateCallBack(UpdateCallBack callBack) {updateCallBack = callBack;}@Overridepublic 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;@Overrideprotected 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();}@Overridepublic void updateProcess(final long all, final long cur) {runOnUiThread(new Runnable() {@Overridepublic 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);}