Android 检查更新版本（带有通知栏，进度条，Notification）

Posted 2023-02-28 峰子_it

最近听说友盟的自动更新后期会不让用了，所以自己谢了一个带有进度条通知栏的检查更新，请大家多提意见，话不多说，上代码。
首先，要去后台获取检查的接口判断是否要更新，如果需要更新，如下；

                        String ver;//该参数为最新的版本号
                        String url;//最新apk的文件地址
                        String notes;//要显示的更新日志

                        UpdateManager manager = new UpdateManager(ver, url, notes, EasyHomeworkActivity.this);
                        // 检查软件更新
                        manager.checkUpdate();

第二步，弹出检查更新对话框选择更新并在通知栏显示进度
UpdateManager类基本就是封装好的一个完善的更新类

package com.easyhomework.more.data;

import android.app.AlertDialog.Builder;
import android.app.Dialog;
import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.content.pm.PackageManager.NameNotFoundException;
import android.net.Uri;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ProgressBar;
import android.widget.RemoteViews;
import android.widget.Toast;

import com.easyhomework.R;
import com.easyhomework.context.EasyHomeworkActivity;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;

/**
 * 作者：lff
 * 时间；2016-4-11 14:38
 * 描述：检查更新
 */
public class UpdateManager 

    /* 下载中 */
    private static final int DOWNLOAD = 1;
    /* 下载结束 */
    private static final int DOWNLOAD_FINISH = 2;
    //判断是否更新中
    public static String tag = "1";//未点击更新

    /* 下载保存路径 */
    private String mSavePath;
    /* 记录进度条数量 */
    private int progress;
    /* 是否取消更新 */
    private boolean cancelUpdate = false;

    private String ver;//版本号
    private String urlapk;//apk地址
    private String notes;//升级说明
    private Context mContext;
    private int len;
    private NotificationManager manager;
    private Notification notif;
    /* 更新进度条 */
    private ProgressBar mProgress;
    private Dialog mDownloadDialog;
//    RemoteViews contentView;
    private Handler mHandler = new Handler() 
        public void handleMessage(Message msg) 
            switch (msg.what) 
                // 正在下载
                case DOWNLOAD:
                    // 设置进度条位置
                    mProgress.setProgress(progress);
progress, false);
                    notif.contentView.setTextViewText(R.id.content_view_text1, "正在下载...  "+progress+"%");
                    notif.contentView.setProgressBar(R.id.content_view_progress, 100, progress, false);
                    manager.notify(0, notif);
                    break;
                case DOWNLOAD_FINISH:
                    // 安装文件
                    notif.contentView.setTextViewText(R.id.content_view_text1, "下载完成！");
                    notif.contentView.setProgressBar(R.id.content_view_progress, 100, 100, false);
                    manager.notify(0, notif);
                    tag = "2";//更新完成开始安装
                    installApk();
                    break;
                default:
                    break;
            
        

        ;
    ;

    public UpdateManager(String ver, String url, String notes, Context context) 
        this.mContext = context;
        this.ver = ver;
        this.urlapk = url;
        this.notes = notes;
    

    public boolean isShowToast = true;

    /**
     * 检测软件更新
     */
    public void checkUpdate() 
        if (isUpdate()) 
            // 显示提示对话框
            if(tag.equals("1"))
                showNoticeDialog();
            else

            

         else 
            if(isShowToast)
                Toast.makeText(mContext, R.string.soft_update_no, Toast.LENGTH_LONG).show();
            
        
    

    /**
     * 检查软件是否有更新版本
     *
     * @return
     */
    private boolean isUpdate() 
        // 获取当前软件版本
        int versionCode = getVersionCode(mContext);

        int serviceCode = Integer.valueOf(ver);
        // 版本判断
        if (serviceCode > versionCode) 
            return true;
        

        return false;
    

    /**
     * 获取软件版本号
     *
     * @param context
     * @return
     */
    private int getVersionCode(Context context) 
        int versionCode = 0;
        try 
            // 获取软件版本号，对应AndroidManifest.xml下android:versionCode
            versionCode = context.getPackageManager().getPackageInfo("com.easyhomework", 0).versionCode;
         catch (NameNotFoundException e) 
            e.printStackTrace();
        
        return versionCode;
    

    /**
     * 显示软件更新对话框
     */
    private void showNoticeDialog() 
        // 构造对话框
        Builder builder = new Builder(mContext);
        builder.setTitle(R.string.soft_update_title);
        builder.setMessage(notes);
        // 更新
        builder.setPositiveButton(R.string.soft_update_updatebtn, new OnClickListener() 
            @Override
            public void onClick(DialogInterface dialog, int which) 
                dialog.dismiss();


//                if (tag) 
                    Toast.makeText(mContext, "后台更新中,请稍后...", Toast.LENGTH_LONG).show();
                tag="3";//开始更新
//                 else 
//                    // 显示下载对话框
                    showDownloadDialog();
//                    Toast.makeText(mContext, "后台下载更新中...", Toast.LENGTH_LONG).show();
//                

            
        );
        // 稍后更新
        builder.setNegativeButton(R.string.soft_update_later, new OnClickListener() 
            @Override
            public void onClick(DialogInterface dialog, int which) 
                dialog.dismiss();
            
        );
        Dialog noticeDialog = builder.create();
        noticeDialog.show();
    

    /**
     * 显示软件下载对话框
     */
    private void showDownloadDialog() 

        // 构造软件下载对话框
        Builder builder = new Builder(mContext);
        builder.setTitle(R.string.soft_updating);
        // 给下载对话框增加进度条
        final LayoutInflater inflater = LayoutInflater.from(mContext);
        View v = inflater.inflate(R.layout.softupdate_progress, null);
        mProgress = (ProgressBar) v.findViewById(R.id.update_progress);
        builder.setView(v);
        // 取消更新
        builder.setNegativeButton(R.string.soft_update_cancel, new OnClickListener() 
            @Override
            public void onClick(DialogInterface dialog, int which) 
                dialog.dismiss();
                // 设置取消状态
                cancelUpdate = true;
            
        );
        mDownloadDialog = builder.create();
//        mDownloadDialog.show();   //不让下载进度条显示

            //点击通知栏后打开的activity
            Intent intent = new Intent(mContext,EasyHomeworkActivity.class);
            PendingIntent pIntent = PendingIntent.getActivity(mContext, 0, intent, 0);
            manager = (NotificationManager) mContext.getSystemService(Context.NOTIFICATION_SERVICE);
            notif = new Notification();
            notif.icon = R.drawable.app_icon;
            notif.tickerText = "更新通知";
            //通知栏显示所用到的布局文件
            notif.contentView = new RemoteViews(mContext.getPackageName(), R.layout.p);
            notif.contentIntent = pIntent;
            manager.notify(0, notif);
        // 下载文件
        downloadApk();
    

    /**
     * 下载apk文件
     */
    private void downloadApk() 
        // 启动新线程下载软件

        new downloadApkThread().start();
    
    int downloadCount = 0;
    /**
     * 下载文件线程
     *
     * @author coolszy
     * @date 2012-4-26
     * @blog http://blog.92coding.com
     */
    private class downloadApkThread extends Thread 
        @Override
        public void run() 
            try 

                // 判断SD卡是否存在，并且是否具有读写权限
                if (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)) 
                    // 获得存储卡的路径
                    String sdpath = Environment.getExternalStorageDirectory() + "/";
                    mSavePath = sdpath + "download";
                    URL url = new URL(urlapk);
                    // 创建连接
                    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
                    conn.connect();
                    // 获取文件大小
                    int length = conn.getContentLength();
                    // 创建输入流
                    InputStream is = conn.getInputStream();

                    File file = new File(mSavePath);
                    // 判断文件目录是否存在
                    if (!file.exists()) 
                        file.mkdir();
                    
                    File apkFile = new File(mSavePath, "easy.apk");
                    FileOutputStream fos = new FileOutputStream(apkFile);
                    int count = 0;
                    // 缓存
                    byte buf[] = new byte[1024];
                    // 写入到文件中


                    do 
                        int numread = is.read(buf);
                        count += numread;

                        // 计算进度条位置
                        progress = (int) (((float) count / length) * 100);
                        Log.i("progress","progress==="+progress);
                        Log.i("progress","count==="+count+numread);
                        // 更新进度
                        //为了防止频繁的通知导致应用吃紧，百分比增加10才通知一次
                        if(downloadCount == 0 || progress-5>downloadCount)
                            downloadCount+=5;
                            mHandler.sendEmptyMessage(DOWNLOAD);
                        
                        if (numread <= 0) 
                            // 下载完成
                            mHandler.sendEmptyMessage(DOWNLOAD_FINISH);
                            break;
                        
                        // 写入文件
                        fos.write(buf, 0, numread);
                     while (!cancelUpdate);// 点击取消就停止下载.
                    fos.close();
                    is.close();
                
             catch (MalformedURLException e) 
                e.printStackTrace();
             catch (IOException e) 
                e.printStackTrace();
            
        
    

    ;

    /**
     * 安装APK文件
     */
    private void installApk() 

        File apkfile = new File(mSavePath, "easy.apk");
        if (!apkfile.exists()) 
            return;
        
        // 通过Intent安装APK文件
;
        Intent intent = new Intent(Intent.ACTION_VIEW);
        intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
        intent.setDataAndType(Uri.parse("file://" + apkfile.toString()), "application/vnd.android.package-archive");
        mContext.startActivity(intent);

    

还有一个是通知栏的布局

通知栏布局 p

<?xml version="1.0" encoding="utf-8"?>

<RelativeLayout

xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="#00000000"
    android:orientation="vertical"
    android:padding="7dp"

>
    <ImageView
        android:id="@+id/content_view_image"
        android:layout_width="25dp"
        android:layout_height="25dp"
        android:src="@drawable/app_icon"

        />
    <TextView
        android:id="@+id/content_view_text1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="0%"
        android:textColor="#969191"
        android:layout_toRightOf="@id/content_view_image"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="5dp"
        android:layout_marginLeft="15dp"
        />
    <ProgressBar
        android:id="@+id/content_view_progress"
        android:layout_width="fill_parent"
        android:layout_height="6dp"
        style="@android:style/Widget.ProgressBar.Horizontal"
        android:max="100"
        android:layout_below="@id/content_view_image"
        android:layout_marginTop="7dp"
        android:progressDrawable="@drawable/progressbar_color"
        />

</RelativeLayout>

大家仔细看UpdateManager 注释，很简单的，最近比较忙，这个博客有点粗糙，有什么问题可以加我QQ群大家一起探讨一下。