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package dk.thoerup.checkupdates; |
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import java.io.ByteArrayOutputStream; |
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import java.io.IOException; |
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import java.io.InputStream; |
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import java.net.URL; |
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import java.net.URLConnection; |
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import android.app.AlertDialog; |
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import android.content.Context; |
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import android.content.DialogInterface; |
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import android.content.Intent; |
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import android.content.SharedPreferences; |
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import android.content.DialogInterface.OnClickListener; |
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import android.content.SharedPreferences.Editor; |
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import android.content.pm.PackageInfo; |
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import android.content.pm.PackageManager; |
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import android.content.pm.PackageManager.NameNotFoundException; |
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import android.net.Uri; |
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import android.os.AsyncTask; |
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import android.util.Log; |
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public class CheckUpdates { |
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public static long TIMESPAN_DAY = 24*60*60*1000; // one day |
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final static String CHECKUPDATES = "CheckUpdates"; |
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int versionCode; |
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String versionName; |
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String packageName; |
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String phone_model; |
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String androidVersion; |
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String title; |
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Context context; |
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public void checkForUpdates(Context context, String url, String title) { |
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this.context = context; |
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this.title = title; |
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SharedPreferences prefs = context.getSharedPreferences(CHECKUPDATES, Context.MODE_PRIVATE); |
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long lastCheck = prefs.getLong("lastcheck", 0); |
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long now = System.currentTimeMillis(); //should i use android.os.SystemClock.elapsedRealtime() instead ? |
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if ( (now+TIMESPAN_DAY) > lastCheck ){ |
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PackageManager pm = context.getPackageManager(); |
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try { |
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PackageInfo pi; |
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pi = pm.getPackageInfo(context.getPackageName(), 0); |
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versionCode = pi.versionCode; |
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versionName = pi.versionName; |
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packageName = pi.packageName; |
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phone_model = android.os.Build.MODEL; |
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androidVersion = android.os.Build.VERSION.RELEASE; |
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UpdateTask task = new UpdateTask(); |
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task.execute(url); |
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} catch (NameNotFoundException e) { |
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Log.e(CHECKUPDATES, "NamingException", e); |
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} |
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} |
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} |
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class UpdateTask extends AsyncTask<String,Void,Void> { |
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boolean result = false; |
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int newestVersion = 0; |
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@Override |
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protected Void doInBackground(String... arg0) { |
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String requestUrl = arg0[0] + "?version=" + encode(versionName) + "&phone=" + encode(phone_model) + "&android=" + encode(androidVersion); |
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try { |
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URL url = new URL(requestUrl); |
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URLConnection conn = url.openConnection(); |
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conn.setConnectTimeout(5); |
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String resultStr = readIOStream( conn.getInputStream() ); |
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resultStr = resultStr.trim(); |
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newestVersion = Integer.parseInt(resultStr); |
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result = true; |
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} catch (Exception e) { |
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Log.e(CHECKUPDATES, "Check for " + packageName + " failed!", e); |
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} |
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return null; |
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} |
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private String encode(String data) { |
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try { |
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return java.net.URLEncoder.encode(data, "UTF-8"); |
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} catch (Exception e) { |
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return data; //if encoding fails, return original and hope all goes well |
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} |
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} |
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private String readIOStream(InputStream in) throws IOException { |
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ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
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byte buf[] = new byte[1024]; |
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int len; |
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while ( (len=in.read(buf)) != -1) { |
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baos.write(buf, 0, len); |
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} |
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return baos.toString(); |
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} |
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@Override |
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protected void onPostExecute(Void r) { |
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super.onPostExecute(r); |
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Log.i(CHECKUPDATES, "result=" + result + ", newestVersion" + newestVersion + ", versionCode=" + versionCode); |
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if (result == true) { |
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if (newestVersion > versionCode) { |
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AlertDialog.Builder builder = new AlertDialog.Builder(context); |
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builder.setTitle(title); |
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builder.setMessage("This application has an a newer version available. Update now?"); |
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builder.setPositiveButton("Yes", new OnClickListener() { |
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public void onClick(DialogInterface dialog, int which) { |
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Intent i = new Intent(Intent.ACTION_VIEW, Uri.parse("market://search?q=pname:" + packageName) ); |
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try { |
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context.startActivity(i); |
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} catch (Exception e) { |
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Log.e(CHECKUPDATES, "Activity launch failed", e); |
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} |
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context = null; |
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} |
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}); |
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builder.setNegativeButton("No", new OnClickListener() { |
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public void onClick(DialogInterface dialog, int which) { |
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context = null; |
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} |
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}); |
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try { |
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builder.show(); |
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} catch (Exception e) { |
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Log.e(CHECKUPDATES, "Builder.show failed", e); |
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} |
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} |
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long now = System.currentTimeMillis(); |
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SharedPreferences prefs = context.getSharedPreferences(CHECKUPDATES, Context.MODE_PRIVATE); |
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//when done write |
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Editor edit = prefs.edit(); |
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edit.putLong("lastCheck", now); |
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edit.commit(); |
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} |
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} |
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} |
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} |