如何允许用户从应用程序内部检查最新的应用程序版本?

时间:2011-09-04 08:30:47

标签: java android http versioning

我想在应用中添加“检查更新”按钮,以便当有人点击它时,它会显示一个Toast消息/进度对话框,用于检查应用的版本。

如果找到新版本,应用会自动将其下载到手机,并允许用户手动安装更新的应用。

或其他任何方法都可以,只要它可以检查最新版本并通知用户更新。

13 个答案:

答案 0 :(得分:43)

为了节省用于检查Android应用程序新版本更新的时间,我将其写为库和开源https://github.com/winsontan520/Android-WVersionManager

答案 1 :(得分:36)

您可以使用此Android库:https://github.com/danielemaddaluno/Android-Update-Checker。它旨在提供一种可重复使用的工具,以便在商店中存在应用程序的任何较新发布更新时异步检查。 它基于使用Jsoup(http://jsoup.org/)来测试是否确实存在解析Google Play商店中的应用页面的新更新:

private boolean web_update(){
    try {       
        String curVersion = applicationContext.getPackageManager().getPackageInfo(package_name, 0).versionName; 
        String newVersion = curVersion;
        newVersion = Jsoup.connect("https://play.google.com/store/apps/details?id=" + package_name + "&hl=en")
                .timeout(30000)
                .userAgent("Mozilla/5.0 (Windows; U; WindowsNT 5.1; en-US; rv1.8.1.6) Gecko/20070725 Firefox/2.0.0.6")
                .referrer("http://www.google.com")
                .get()
                .select("div[itemprop=softwareVersion]")
                .first()
                .ownText();
        return (value(curVersion) < value(newVersion)) ? true : false;
    } catch (Exception e) {
        e.printStackTrace();
        return false;
    }
}

以及“值”功能如下(如果值在0-99之间,则有效):

private long value(String string) {
    string = string.trim();
    if( string.contains( "." )){ 
        final int index = string.lastIndexOf( "." );
        return value( string.substring( 0, index ))* 100 + value( string.substring( index + 1 )); 
    }
    else {
        return Long.valueOf( string ); 
    }
}

如果您只想验证版本之间的不匹配,可以更改:

带有value(curVersion) < value(newVersion)

value(curVersion) != value(newVersion)

答案 2 :(得分:26)

如果它是市场上的应用程序,那么在应用程序启动时,启动Intent以打开Market应用程序,这将导致它检查更新。

否则实现和更新检查器相当容易。这是我的代码(大致):

String response = SendNetworkUpdateAppRequest(); // Your code to do the network request
                                                 // should send the current version
                                                 // to server
if(response.equals("YES")) // Start Intent to download the app user has to manually install it by clicking on the notification
    startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("URL TO LATEST APK")));

当然你应该重写这个来在后台线程上做请求,但你明白了。

  

如果你喜欢一些但更复杂的东西,但允许你的应用   自动应用更新,请参阅here

答案 3 :(得分:9)

Google在两个月前更新了Play商店。 这是我现在正在使用的解决方案..

class GetVersionCode extends AsyncTask<Void, String, String> {

    @Override

    protected String doInBackground(Void... voids) {

        String newVersion = null;

        try {
            Document document = Jsoup.connect("https://play.google.com/store/apps/details?id=" + MainActivity.this.getPackageName()  + "&hl=en")
                    .timeout(30000)
                    .userAgent("Mozilla/5.0 (Windows; U; WindowsNT 5.1; en-US; rv1.8.1.6) Gecko/20070725 Firefox/2.0.0.6")
                    .referrer("http://www.google.com")
                    .get();
            if (document != null) {
                Elements element = document.getElementsContainingOwnText("Current Version");
                for (Element ele : element) {
                    if (ele.siblingElements() != null) {
                        Elements sibElemets = ele.siblingElements();
                        for (Element sibElemet : sibElemets) {
                            newVersion = sibElemet.text();
                        }
                    }
                }
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        return newVersion;

    }


    @Override

    protected void onPostExecute(String onlineVersion) {

        super.onPostExecute(onlineVersion);

        if (onlineVersion != null && !onlineVersion.isEmpty()) {

            if (Float.valueOf(currentVersion) < Float.valueOf(onlineVersion)) {
                //show anything
            }

        }

        Log.d("update", "Current version " + currentVersion + "playstore version " + onlineVersion);

    }
}

并且不要忘记添加JSoup库

dependencies {
compile 'org.jsoup:jsoup:1.8.3'}

和Oncreate()

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);


    String currentVersion;
    try {
        currentVersion = getPackageManager().getPackageInfo(getPackageName(), 0).versionName;
    } catch (PackageManager.NameNotFoundException e) {
        e.printStackTrace();
    }

    new GetVersionCode().execute();

}

那是...... 感谢this link

答案 4 :(得分:5)

导航到您的播放页面:

https://play.google.com/store/apps/details?id=com.yourpackage

使用标准HTTP GET。 现在,以下jQuery为您找到重要信息:

当前版本

$("[itemprop='softwareVersion']").text()

什么是新的

$(".recent-change").each(function() { all += $(this).text() + "\n"; })

既然您可以手动提取这些信息,只需在您的应用中为您执行此方法。

public static String[] getAppVersionInfo(String playUrl) {
    HtmlCleaner cleaner = new HtmlCleaner();
    CleanerProperties props = cleaner.getProperties();
    props.setAllowHtmlInsideAttributes(true);
    props.setAllowMultiWordAttributes(true);
    props.setRecognizeUnicodeChars(true);
    props.setOmitComments(true);
    try {
        URL url = new URL(playUrl);
        URLConnection conn = url.openConnection();
        TagNode node = cleaner.clean(new InputStreamReader(conn.getInputStream()));
        Object[] new_nodes = node.evaluateXPath("//*[@class='recent-change']");
        Object[] version_nodes = node.evaluateXPath("//*[@itemprop='softwareVersion']");

        String version = "", whatsNew = "";
        for (Object new_node : new_nodes) {
            TagNode info_node = (TagNode) new_node;
            whatsNew += info_node.getAllChildren().get(0).toString().trim()
                    + "\n";
        }
        if (version_nodes.length > 0) {
            TagNode ver = (TagNode) version_nodes[0];
            version = ver.getAllChildren().get(0).toString().trim();
        }
        return new String[]{version, whatsNew};
    } catch (IOException | XPatherException e) {
        e.printStackTrace();
        return null;
    }
}

使用HtmlCleaner

答案 5 :(得分:4)

compile 'org.jsoup:jsoup:1.10.2'添加到 APP LEVEL build.gradle

中的依赖项

&安培;

只需添加以下代码就可以了。

private class GetVersionCode extends AsyncTask<Void, String, String> {
    @Override
    protected String doInBackground(Void... voids) {

        try {
            newVersion = Jsoup.connect("https://play.google.com/store/apps/details?id=" + SplashActivity.this.getPackageName() + "&hl=it")
                    .timeout(30000)
                    .userAgent("Mozilla/5.0 (Windows; U; WindowsNT 5.1; en-US; rv1.8.1.6) Gecko/20070725 Firefox/2.0.0.6")
                    .referrer("http://www.google.com")
                    .get()
                    .select("div[itemprop=softwareVersion]")
                    .first()
                    .ownText();
            return newVersion;
        } catch (Exception e) {
            return newVersion;
        }
    }

    @Override
    protected void onPostExecute(String onlineVersion) {
        super.onPostExecute(onlineVersion);

        if (!currentVersion.equalsIgnoreCase(onlineVersion)) {
            //show dialog
            new AlertDialog.Builder(context)
                    .setTitle("Updated app available!")
                    .setMessage("Want to update app?")
                    .setPositiveButton("Update", new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog, int which) {
                            // continue with delete
                            final String appPackageName = getPackageName(); // getPackageName() from Context or Activity object
                            try {
                                Toast.makeText(getApplicationContext(), "App is in BETA version cannot update", Toast.LENGTH_SHORT).show();
                                startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("market://details?id=" + appPackageName)));
                            } catch (ActivityNotFoundException anfe) {
                                startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("https://play.google.com/store/apps/details?id=" + appPackageName)));
                            }
                        }
                    })
                    .setNegativeButton("Later", new DialogInterface.OnClickListener() {
                        public void onClick(DialogInterface dialog, int which) {
                            // do nothing
                            dialog.dismiss();
                            new MyAsyncTask().execute();
                        }
                    })
                    .setIcon(android.R.drawable.ic_dialog_alert)
                    .show();

        }
    }
}

答案 6 :(得分:2)

没有这方面的API,您无法自动安装它,您可以将它们重定向到它的市场页面,以便它们可以升级。您可以将最新版本放在Web服务器上的文件中,然后让应用程序对其进行检查。这是一个实现:

http://code.google.com/p/openintents/source/browse/#svn%2Ftrunk%2FUpdateCheckerApp

答案 7 :(得分:1)

以下是查找当前和最新可用版本的方法:

http://localhost:8444/pac4j1

答案 8 :(得分:0)

您应首先检查市场上的应用版本,并将其与设备上的应用版本进行比较。如果它们不同,则可能是可用的更新。在这篇文章中,我写下了在设备上获取当前版本的市场和当前版本的代码,并将它们进行比较。我还展示了如何显示更新对话框并将用户重定向到更新页面。请访问此链接:https://stackoverflow.com/a/33925032/5475941

答案 9 :(得分:0)

我确实使用过in-app updates。仅适用于运行Android 5.0(API级别21)或更高版本的设备,

答案 10 :(得分:0)

我知道OP很旧,那时in-app-update不可用。 但是从API 21开始,您可以使用应用内更新检查。 您可能需要注意here写得很好的一些观点:

答案 11 :(得分:0)

我们可以通过添加以下代码来检查更新:

首先,我们需要添加依赖项:

实现'org.jsoup:jsoup:1.10.2'

第二,我们需要创建Java文件:

import android.app.Activity;
import android.app.AlertDialog;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.os.AsyncTask;
import android.widget.Toast;

import org.jsoup.Jsoup;

public class CurrentVersion{
    private Activity activity;
    public CurrentVersion(Activity activity) {
        this.activity = activity;
    }
    //current version of app installed in the device
private String getCurrentVersion(){
        PackageManager pm = activity.getPackageManager();
        PackageInfo pInfo = null;
        try {
        pInfo = pm.getPackageInfo(activity.getPackageName(),0);
        } catch (PackageManager.NameNotFoundException e1) {
        e1.printStackTrace();
        }
        return pInfo.versionName;
        }
private class GetLatestVersion extends AsyncTask<String, String, String> {
    private String latestVersion;
    private ProgressDialog progressDialog;
    private boolean manualCheck;
    GetLatestVersion(boolean manualCheck) {
        this.manualCheck = manualCheck;
    }
    @Override
    protected void onPostExecute(String s) {
        super.onPostExecute(s);
        if (manualCheck)
        {
            if (progressDialog!=null)
            {
                if (progressDialog.isShowing())
                {
                    progressDialog.dismiss();
                }
            }
        }
        String currentVersion = getCurrentVersion();
        //If the versions are not the same
        if(!currentVersion.equals(latestVersion)&&latestVersion!=null){
            final AlertDialog.Builder builder = new AlertDialog.Builder(activity);
            builder.setTitle("An Update is Available");
            builder.setMessage("Its better to update now");
            builder.setPositiveButton("Update", new DialogInterface.OnClickListener() {
                @Override
                public void onClick(DialogInterface dialog, int which) {
                    //Click button action
                    activity.startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("market://details?id="+activity.getPackageName())));
                    dialog.dismiss();
                }
            });
            builder.setCancelable(false);
            builder.show();
        }
        else {
            if (manualCheck) {
                Toast.makeText(activity, "No Update Available", Toast.LENGTH_SHORT).show();
            }
        }
    }
  
    @Override
    protected String doInBackground(String... params) {
        try {
            //It retrieves the latest version by scraping the content of current version from play store at runtime
            latestVersion = Jsoup.connect("https://play.google.com/store/apps/details?id=" + activity.getPackageName() + "&hl=it")
                    .timeout(30000)
                    .userAgent("Mozilla/5.0 (Windows; U; WindowsNT 5.1; en-US; rv1.8.1.6) Gecko/20070725 Firefox/2.0.0.6")
                    .referrer("http://www.google.com")
                    .get()
                    .select(".hAyfc .htlgb")
                    .get(7)
                    .ownText();
            return latestVersion;
        } catch (Exception e) {
            return latestVersion;
        }
    }
}
    public void checkForUpdate(boolean manualCheck)
    {
        new GetLatestVersion(manualCheck).execute();
    }
}

第三步我们需要在您要显示更新的主类中添加该类:

AppUpdateChecker appUpdateChecker=new AppUpdateChecker(this); 
 appUpdateChecker.checkForUpdate(false);

我希望它将为您提供帮助

答案 12 :(得分:0)

使用jsoup HTML解析器库@https://jsoup.org/

implementation 'org.jsoup:jsoup:1.13.1'

您可以简单地为此创建一个方法;

private void IsUpdateAvailable() {
    new Thread(new Runnable() {
        @Override
        public void run() {
            String newversion = "no";
            String newversiondot = "no";
            try {
                newversiondot = Jsoup.connect("https://play.google.com/store/apps/details?id=" + BuildConfig.APPLICATION_ID + "&hl=en")
                        .timeout(30000)
                        .userAgent("Mozilla/5.0 (Windows; U; WindowsNT 5.1; en-US; rv1.8.1.6) Gecko/20070725 Firefox/2.0.0.6")
                        .referrer("http://www.google.com")
                        .get().select("div.hAyfc:nth-child(4) > span:nth-child(2) > div:nth-child(1) > span:nth-child(1)")
                        .first()
                        .ownText();

                newversion = newversiondot.replaceAll("[^0-9]", "");

            } catch (IOException e) {
                Log.d("TAG NEW", "run: " + e);
            }

            final String finalNewversion = newversion;
            final String finalNewversiondot = newversiondot;
            runOnUiThread(new Runnable() {
                @Override
                public void run() {
                    try {
                        if (Integer.parseInt(finalNewversion) > Integer.parseInt(getApplicationContext().getPackageManager().getPackageInfo(BuildConfig.APPLICATION_ID, 0).versionName.replaceAll("[^0-9]", ""))) {
                            showDialog(UsersActivity.this, "Version: "+finalNewversiondot);
                        }
                    } catch (PackageManager.NameNotFoundException e) {
                        e.printStackTrace();
                    }
                }
            });
        }
    }).start();
}