package org.qii.weiciyuan.support.lib.changelogdialog;
import org.qii.weiciyuan.R;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.res.Resources;
import android.content.res.XmlResourceParser;
import android.util.Log;
import android.webkit.WebView;
import android.widget.Toast;
import java.io.IOException;
/**
* User: qii
* Date: 12-12-28
*/
public class ChangeLogDialog {
static final private String TAG = "ChangeLogDialog";
static final private String TITLE_CHANGELOG = "title_changelog";
static final private String CHANGELOG_XML = "changelog";
private Activity fActivity;
public ChangeLogDialog(Activity context) {
fActivity = context;
}
//Get the current app version
private String GetAppVersion() {
try {
PackageInfo _info = fActivity.getPackageManager()
.getPackageInfo(fActivity.getPackageName(), 0);
return _info.versionName;
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
return "";
}
}
//Parse a the release tag and return html code
private String ParseReleaseTag(XmlResourceParser aXml)
throws XmlPullParserException, IOException {
String _Result = "<h1>Release: " + aXml.getAttributeValue(null, "version") + "</h1><ul>";
int eventType = aXml.getEventType();
while ((eventType != XmlPullParser.END_TAG) || (aXml.getName().equals("change"))) {
if ((eventType == XmlPullParser.START_TAG) && (aXml.getName().equals("change"))) {
eventType = aXml.next();
_Result = _Result + "<li>" + aXml.getText() + "</li>";
}
eventType = aXml.next();
}
_Result = _Result + "</ul>";
return _Result;
}
//CSS style for the html
private String GetStyle() {
return
"<style type=\"text/css\">"
+ "h1 { margin-left: 0px; font-size: 12pt; }"
+ "li { margin-left: 0px; font-size: 9pt;}"
+ "ul { padding-left: 30px;}"
+ "</style>";
}
//Get the changelog in html code, this will be shown in the dialog's webview
private String GetHTMLChangelog(int aResourceId, Resources aResource) {
String _Result = "<html><head>" + GetStyle() + "</head><body>";
XmlResourceParser _xml = aResource.getXml(aResourceId);
try {
int eventType = _xml.getEventType();
while (eventType != XmlPullParser.END_DOCUMENT) {
if ((eventType == XmlPullParser.START_TAG) && (_xml.getName().equals("release"))) {
_Result = _Result + ParseReleaseTag(_xml);
}
eventType = _xml.next();
}
} catch (XmlPullParserException e) {
Log.e(TAG, e.getMessage(), e);
} catch (IOException e) {
Log.e(TAG, e.getMessage(), e);
} finally {
_xml.close();
}
_Result = _Result + "</body></html>";
return _Result;
}
//Call to show the changelog dialog
public void show() {
//Get resources
String _PackageName = fActivity.getPackageName();
Resources _Resource;
try {
_Resource = fActivity.getPackageManager().getResourcesForApplication(_PackageName);
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
return;
}
//Get dialog title
int _resID = _Resource.getIdentifier(TITLE_CHANGELOG, "string", _PackageName);
String _Title = _Resource.getString(_resID);
// _Title = _Title + " v" + GetAppVersion();
//Get Changelog xml resource id
_resID = _Resource.getIdentifier(CHANGELOG_XML, "xml", _PackageName);
//Create html change log
String _HTML = GetHTMLChangelog(_resID, _Resource);
//Get button strings
String _Close = _Resource.getString(R.string.changelog_close);
//Check for empty changelog
if (_HTML.equals("") == true) {
//Could not load change log, message user and exit void
Toast.makeText(fActivity, "Could not load change log", Toast.LENGTH_SHORT).show();
return;
}
//Create webview and load html
WebView _WebView = new WebView(fActivity);
// _WebView.loadData(_HTML, "text/html", "UTF-8");
_WebView.loadData(_HTML, "text/html; charset=UTF-8", null);
AlertDialog.Builder builder = new AlertDialog.Builder(fActivity)
.setTitle(_Title)
.setView(_WebView)
.setPositiveButton(_Close, new Dialog.OnClickListener() {
public void onClick(DialogInterface dialogInterface, int i) {
dialogInterface.dismiss();
}
});
builder.create().show();
}
}