android 在線升級借助開源中國App源碼分析如下:
1: checkAppUpdate 檢查是或需要升級
// 網絡連接判斷
if (appContext.isNetworkConnected()) {
// 檢查新版本
if (appContext.isCheckUp()) {
UpdateManager.getUpdateManager().checkAppUpdate(this, false);
}
}
2: UpdateManager類
package lcl.android.core;
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;
import java.text.DecimalFormat;
import lcl.android.R;
import lcl.android.api.ApiClient;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.app.Dialog;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.content.DialogInterface.OnCancelListener;
import android.content.DialogInterface.OnClickListener;
import android.content.Intent;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager.NameNotFoundException;
import android.net.Uri;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;
/**
* 應用程序更新工具包
*
*/
public class UpdateManager {
private static final int DOWN_NOSDCARD = 0;
private static final int DOWN_UPDATE = 1;
private static final int DOWN_OVER = 2;
private static final int DIALOG_TYPE_LATEST = 0;
private static final int DIALOG_TYPE_FAIL = 1;
private static UpdateManager updateManager;
private Context mContext;
// 通知對話框
private Dialog noticeDialog;
// 下載對話框
private Dialog downloadDialog;
// '已經是最新' 或者 '無法獲取最新版本' 的對話框
private Dialog latestOrFailDialog;
// 進度條
private ProgressBar mProgress;
// 顯示下載數值
private TextView mProgressText;
// 查詢動畫
private ProgressDialog mProDialog;
// 進度值
private int progress;
// 下載線程
private Thread downLoadThread;
// 終止標記
private boolean interceptFlag;
// 提示語
private String updateMsg = "";
// 返回的安裝包url
private String apkUrl = "";
// 下載包保存路徑
private String savePath = "";
// apk保存完整路徑
private String apkFilePath = "";
// 臨時下載文件路徑
private String tmpFilePath = "";
// 下載文件大小
private String apkFileSize;
// 已下載文件大小
private String tmpFileSize;
private String curVersionName = "";
private int curVersionCode;
private Update mUpdate;
//單利模式
public static UpdateManager getUpdateManager() {
if (updateManager == null) {
updateManager = new UpdateManager();
}
updateManager.interceptFlag = false;
return updateManager;
}
private Handler mHandler = new Handler() {
public void handleMessage(Message msg) {
switch (msg.what) {
case DOWN_UPDATE:
mProgress.setProgress(progress);
mProgressText.setText(tmpFileSize + "/" + apkFileSize);
break;
case DOWN_OVER:
downloadDialog.dismiss();
installApk();
break;
case DOWN_NOSDCARD:
downloadDialog.dismiss();
Toast.makeText(mContext, "無法下載安裝文件，請檢查SD卡是否掛載", 3000).show();
break;
}
};
};
/**
* 獲取當前客戶端版本信息
*/
private void getCurrentVersion() {
try {
PackageInfo info = mContext.getPackageManager().getPackageInfo(
mContext.getPackageName(), 0);
curVersionName = info.versionName;
curVersionCode = info.versionCode;
} catch (NameNotFoundException e) {
e.printStackTrace(System.err);
}
}
/**
* 檢查App更新
*
* @param context
* @param isShowMsg
* 是否顯示提示消息
*/
public void checkAppUpdate(Context context, final boolean isShowMsg) {
this.mContext = context;
getCurrentVersion();
if (isShowMsg) {
if (mProDialog == null)
mProDialog = ProgressDialog.show(mContext, null, "正在檢測，請稍后...",
true, true);
else if (mProDialog.isShowing()
|| (latestOrFailDialog != null && latestOrFailDialog
.isShowing()))
return;
}
final Handler handler = new Handler() {
public void handleMessage(Message msg) {
// 進度條對話框不顯示 - 檢測結果也不顯示
if (mProDialog != null && !mProDialog.isShowing()) {
return;
}
// 關閉並釋放釋放進度條對話框
if (isShowMsg && mProDialog != null) {
mProDialog.dismiss();
mProDialog = null;
}
// 顯示檢測結果
if (msg.what == 1) {
mUpdate = (Update) msg.obj;
if (mUpdate != null) {
if (curVersionCode < mUpdate.getVersionCode()) {
apkUrl = mUpdate.getDownloadUrl();
updateMsg = mUpdate.getUpdateLog();
showNoticeDialog();
} else if (isShowMsg) {
showLatestOrFailDialog(DIALOG_TYPE_LATEST);
}
}
} else if (isShowMsg) {
showLatestOrFailDialog(DIALOG_TYPE_FAIL);
}
}
};
new Thread() {
public void run() {
Message msg = new Message();
try {
Update update = ApiClient
.checkVersion((AppContext) mContext
.getApplicationContext());
msg.what = 1;
msg.obj = update;
} catch (Exception e) {
e.printStackTrace();
}
handler.sendMessage(msg);
}
}.start();
}
/**
* 顯示版本更新通知對話框
*/
private void showNoticeDialog() {
AlertDialog.Builder builder = new Builder(mContext);
builder.setTitle("軟件版本更新");
builder.setMessage(updateMsg);
builder.setPositiveButton("立即更新", new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
showDownloadDialog();
}
});
builder.setNegativeButton("以后再說", new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
noticeDialog = builder.create();
noticeDialog.show();
}
/**
* 顯示下載對話框
*/
private void showDownloadDialog() {
AlertDialog.Builder builder = new Builder(mContext);
builder.setTitle("正在下載新版本");
final LayoutInflater inflater = LayoutInflater.from(mContext);
View v = inflater.inflate(R.layout.update_progress, null);
mProgress = (ProgressBar) v.findViewById(R.id.update_progress);
mProgressText = (TextView) v.findViewById(R.id.update_progress_text);
builder.setView(v);
builder.setNegativeButton("取消", new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
interceptFlag = true;
}
});
builder.setOnCancelListener(new OnCancelListener() {
@Override
public void onCancel(DialogInterface dialog) {
dialog.dismiss();
interceptFlag = true;
}
});
downloadDialog = builder.create();
downloadDialog.setCanceledOnTouchOutside(false);
downloadDialog.show();
downloadApk();
}
/**
* 顯示'已經是最新'或者'無法獲取版本信息'對話框
*/
private void showLatestOrFailDialog(int dialogType) {
if (latestOrFailDialog != null) {
// 關閉並釋放之前的對話框
latestOrFailDialog.dismiss();
latestOrFailDialog = null;
}
AlertDialog.Builder builder = new Builder(mContext);
builder.setTitle("系統提示");
if (dialogType == DIALOG_TYPE_LATEST) {
builder.setMessage("您當前已經是最新版本");
} else if (dialogType == DIALOG_TYPE_FAIL) {
builder.setMessage("無法獲取版本更新信息");
}
builder.setPositiveButton("確定", null);
latestOrFailDialog = builder.create();
latestOrFailDialog.show();
}
private Runnable mdownApkRunnable = new Runnable() {
@Override
public void run() {
try {
String apkName = "OSChinaApp_" + mUpdate.getVersionName()
+ ".apk";
String tmpApk = "OSChinaApp_" + mUpdate.getVersionName()
+ ".tmp";
// 判斷是否掛載了SD卡
String storageState = Environment.getExternalStorageState();
if (storageState.equals(Environment.MEDIA_MOUNTED)) {
savePath = Environment.getExternalStorageDirectory()
.getAbsolutePath() + "/OSChina/Update/";
File file = new File(savePath);
if (!file.exists()) {
file.mkdirs();
}
apkFilePath = savePath + apkName;
tmpFilePath = savePath + tmpApk;
}
// 沒有掛載SD卡，無法下載文件
if (apkFilePath == null || apkFilePath == "") {
mHandler.sendEmptyMessage(DOWN_NOSDCARD);
return;
}
File ApkFile = new File(apkFilePath);
// 是否已下載更新文件
if (ApkFile.exists()) {
downloadDialog.dismiss();
installApk();
return;
}
// 輸出臨時下載文件
File tmpFile = new File(tmpFilePath);
FileOutputStream fos = new FileOutputStream(tmpFile);
URL url = new URL(apkUrl);
HttpURLConnection conn = (HttpURLConnection) url
.openConnection();
conn.connect();
int length = conn.getContentLength();
InputStream is = conn.getInputStream();
// 顯示文件大小格式：2個小數點顯示
DecimalFormat df = new DecimalFormat("0.00");
// 進度條下面顯示的總文件大小
apkFileSize = df.format((float) length / 1024 / 1024) + "MB";
int count = 0;
byte buf[] = new byte[1024];
do {
int numread = is.read(buf);
count += numread;
// 進度條下面顯示的當前下載文件大小
tmpFileSize = df.format((float) count / 1024 / 1024) + "MB";
// 當前進度值
progress = (int) (((float) count / length) * 100);
// 更新進度
mHandler.sendEmptyMessage(DOWN_UPDATE);
if (numread <= 0) {
// 下載完成 - 將臨時下載文件轉成APK文件
if (tmpFile.renameTo(ApkFile)) {
// 通知安裝
mHandler.sendEmptyMessage(DOWN_OVER);
}
break;
}
fos.write(buf, 0, numread);
} while (!interceptFlag);// 點擊取消就停止下載
fos.close();
is.close();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
};
/**
* 下載apk
*
* @param url
*/
private void downloadApk() {
downLoadThread = new Thread(mdownApkRunnable);
downLoadThread.start();
}
/**
* 安裝apk
*
* @param url
*/
private void installApk() {
File apkfile = new File(apkFilePath);
if (!apkfile.exists()) {
return;
}
Intent i = new Intent(Intent.ACTION_VIEW);
i.setDataAndType(Uri.parse("file://" + apkfile.toString()),
"application/vnd.android.package-archive");
mContext.startActivity(i);
}
}
3：應用程序更新實體類
package lcl.android.core;
import java.io.IOException;
import java.io.InputStream;
import java.io.Serializable;
import lcl.android.utility.StringUtils;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import android.util.Xml;
/**
* 應用程序更新實體類
*
* @author liux (http://my.oschina.net/liux)
* @version 1.0
* @created 2012-3-21
*/
public class Update implements Serializable {
private static final long serialVersionUID = -1356876892850891288L;
public final static String UTF8 = "UTF-8";
public final static String NODE_ROOT = "oschina";
private int versionCode;
private String versionName;
private String downloadUrl;
private String updateLog;
public int getVersionCode() {
return versionCode;
}
public void setVersionCode(int versionCode) {
this.versionCode = versionCode;
}
public String getVersionName() {
return versionName;
}
public void setVersionName(String versionName) {
this.versionName = versionName;
}
public String getDownloadUrl() {
return downloadUrl;
}
public void setDownloadUrl(String downloadUrl) {
this.downloadUrl = downloadUrl;
}
public String getUpdateLog() {
return updateLog;
}
public void setUpdateLog(String updateLog) {
this.updateLog = updateLog;
}
public static Update parse(InputStream inputStream) throws IOException,
Exception {
Update update = null;
// 獲得XmlPullParser解析器
XmlPullParser xmlParser = Xml.newPullParser();
try {
xmlParser.setInput(inputStream, UTF8);
// 獲得解析到的事件類別，這里有開始文檔，結束文檔，開始標簽，結束標簽，文本等等事件。
int evtType = xmlParser.getEventType();
// 一直循環，直到文檔結束
while (evtType != XmlPullParser.END_DOCUMENT) {
String tag = xmlParser.getName();
switch (evtType) {
case XmlPullParser.START_TAG:
// 通知信息
if (tag.equalsIgnoreCase("android")) {
update = new Update();
} else if (update != null) {
if (tag.equalsIgnoreCase("versionCode")) {
update.setVersionCode(StringUtils.toInt(
xmlParser.nextText(), 0));
} else if (tag.equalsIgnoreCase("versionName")) {
update.setVersionName(xmlParser.nextText());
} else if (tag.equalsIgnoreCase("downloadUrl")) {
update.setDownloadUrl(xmlParser.nextText());
} else if (tag.equalsIgnoreCase("updateLog")) {
update.setUpdateLog(xmlParser.nextText());
}
}
break;
case XmlPullParser.END_TAG:
break;
}
// 如果xml沒有結束，則導航到下一個節點
evtType = xmlParser.next();
}
} catch (XmlPullParserException e) {
} finally {
inputStream.close();
}
return update;
}
}
4：獲取網絡版本信息
/**
* API客戶端接口：用於訪問網絡數據
*
* @author liux (http://my.oschina.net/liux)
* @version 1.0
* @created 2012-3-21
*/
public class ApiClient {
/**
* 檢查版本更新
*
* @param url
* @return
*/
public static Update checkVersion(AppContext appContext) throws Exception {
try {
return Update.parse(HtmlRegexpUtil
.GetInputStreamByUrl(“http://files.cnblogs.com/luomingui/MobileAppVersion.xml”));
} catch (Exception e) {
throw e;
}
}
}
5：發布到網絡
