如果有新版本可用，如何在Android应用程序中强制更新？ [英] How to force update in Android application if new version is available?

问题描述

我正在开发一个应用程序，如果Play商店上有可用的新版本，我想强制更新应用程序用户，该应用程序应该向用户显示一条对话框消息。

I am working on an application I want to give force update to app users if new version available on play store, the app should show a dialog message to user.

推荐答案

public class ForceUpdateAsync extends AsyncTask<String, String, JSONObject>{

    private String latestVersion;
    private String currentVersion;
    private Context context;
    public ForceUpdateAsync(String currentVersion, Context context){
        this.currentVersion = currentVersion;
        this.context = context;
    }

    @Override
    protected JSONObject doInBackground(String... params) {

        try {
             latestVersion = Jsoup.connect("https://play.google.com/store/apps/details?id="+context.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()
                    .select("div[itemprop=softwareVersion]")
                    .first()
                     .ownText();

        } catch (IOException e) {
            e.printStackTrace();
        }
        return new JSONObject();
    }

    @Override
    protected void onPostExecute(JSONObject jsonObject) {
        if(latestVersion!=null){
            if(!currentVersion.equalsIgnoreCase(latestVersion)){
               // Toast.makeText(context,"update is available.",Toast.LENGTH_LONG).show();
                if(!(context instanceof SplashActivity)) {
                    if(!((Activity)context).isFinishing()){
                        showForceUpdateDialog();
                    }
                }
            }
        }
        super.onPostExecute(jsonObject);
    }

    public void showForceUpdateDialog(){
        AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(new ContextThemeWrapper(context,
                R.style.DialogDark));

        alertDialogBuilder.setTitle(context.getString(R.string.youAreNotUpdatedTitle));
        alertDialogBuilder.setMessage(context.getString(R.string.youAreNotUpdatedMessage) + " " + latestVersion + context.getString(R.string.youAreNotUpdatedMessage1));
        alertDialogBuilder.setCancelable(false);
        alertDialogBuilder.setPositiveButton(R.string.update, new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog, int id) {
                context.startActivity(new Intent(Intent.ACTION_VIEW, Uri.parse("market://details?id=" + context.getPackageName())));
                dialog.cancel();
            }
        });
        alertDialogBuilder.show();
    }
}

在string.xml中，您可以添加所需的任何按摩

in string.xml you can add whatever massage you want like this.

<string name="youAreNotUpdatedTitle">Update Available</string>
    <string name="youAreNotUpdatedMessage">A new version of YOUR_APP_NAME is available. Please update to version\s</string>
    <string name="youAreNotUpdatedMessage1">\s now</string>
    <string name="update">Update</string>

请记住，您必须在对话框代码中定义对话框的样式。

remember you have to define the style of your dialog in the dialog code.

现在只需在基本活动中编写forceUpdate（）函数，并在onResume（）方法中调用它就可以了！

now just write the forceUpdate() function in your base activity and call it inside onResume() method and you are done!!

// check version on play store and force update
    public void forceUpdate(){
        PackageManager packageManager = this.getPackageManager();
        PackageInfo packageInfo = null;
        try {
            packageInfo =  packageManager.getPackageInfo(getPackageName(),0);
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
        }
        String currentVersion = packageInfo.versionName;
        new ForceUpdateAsync(currentVersion,BaseActivity.this).execute();
    }

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