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1. VersionUpdate用于檢測是否有新版本，以及如果有新版本以何種方式提示給用戶。
public class VersionUpdate {
private String TAG = "VersionUpdate";
public final String APK_URL = "http://gdown.baidu.com/data/wisegame/086ad68302fb074d/WeChat_352.apk";
private Context context;
private UpdateManager updateManager;
private int mUpdateRole = 12; // 版本更新用到
private UpdateListener updateListener;
public void setUpdateListener(UpdateListener updateListener) {
this.updateListener = updateListener;
}
public interface UpdateListener {
public void onUpdate(double remoteVersion, double localVersion);
}
public VersionUpdate(Context context) {
this.context = context;
updateManager = new UpdateManager(context);
}
public void checkUpdate() {
IVideoFetcher.CallBack callback = new IVideoFetcher.CallBackAdapter() {
@Override
public void onComplete(IVideoResult result) {
if(!result.isSuccess()) return;
VersionData data = (VersionData)result.getData();
if(data == null) return;
data.setApkUrl(APK_URL);
updateManager.setApkUrl(data.getApkUrl());
Log.i(TAG, new Gson().toJson(data));
double remoteVersion = 0.0;
double localVersion = 0.0;
try {
remoteVersion = Double.valueOf(data.getVersion());
localVersion = Double.valueOf(getVersion());
mUpdateRole = Integer.valueOf(data.getRole());
} catch(NumberFormatException ex) {
ex.printStackTrace();
}
updateListener.onUpdate(remoteVersion, localVersion);
}
};
String url = IVideoURL.TvieURL.VERSION_URL;
Map<String, String> params = new HashMap<String, String>();
params.put("version", getVersion());
params.put("productId", context.getPackageName());
params.put("platform", "android");
params.put("os", Build.VERSION.CODENAME);
IVideoFetcher.doGet(VersionResult.class, callback, url, params);
}
public void confirmUpdate() {
AlertDialog.Builder builder = new Builder(context);
builder.setMessage("親，有更新版本的軟件包哦，請快下載更新吧");
builder.setTitle("更新提示");
builder.setPositiveButton("確定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
updateManager.beginUpdate();
}
});
builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
builder.create().show();
}
public void alertNeedUpdate() {
AlertDialog.Builder builder = new Builder(context);
builder.setMessage("親，有更新版本的軟件包哦，請快下載更新吧");
builder.setTitle("更新提示");
builder.setPositiveButton("確認", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
updateManager.beginUpdate();
}
});
builder.create().show();
}
public void alertNoUpdate() {
AlertDialog.Builder builder = new Builder(context);
builder.setMessage("親，該版本已是最新版本，無需升級");
builder.setTitle("更新提示");
builder.setPositiveButton("確定", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
}
});
builder.create().show();
}
/**
* 獲取版本號
* @return 當前應用的版本號
*/
public String getVersion() {
try {
PackageManager manager = context.getPackageManager();
PackageInfo info = manager.getPackageInfo(context.getPackageName(), 0);
String version = info.versionName;
return version;
} catch (Exception e) {
e.printStackTrace();
return "0.0";
}
}
public void update() {
switch(mUpdateRole) {
case 10:
confirmUpdate();
break;
case 11:
alertNeedUpdate();
break;
case 9:
case 12:
alertNoUpdate();
break;
}
}
}2. UpdateManager用于從服務端下載新的apk文件，下載完成提示用戶安裝。
public class UpdateManager {
private Context mContext;
//提示語
private String updateMsg = "有最新的軟件包哦，親快下載吧~";
//返回的安裝包url
private String apkUrl;
private Dialog noticeDialog;
private Dialog downloadDialog;
/* 下載包安裝路徑 */
// private static final String savePath = "/sdcard/com.tvie.xj.ivideo/";
private static final String savePath = TvieApplication.getInstance().getCacheDirPath();
private static final String saveFileName = savePath + "/com.tvie.xj.ivideo.apk";
/* 進度條與通知ui刷新的handler和msg常量 */
private ProgressBar mProgress;
private TextView mProgressHint;
private static final int DOWN_UPDATE = 1;
private static final int DOWN_OVER = 2;
private int progress;
private int current;
private int total;
private Thread downLoadThread;
private boolean interceptFlag = false;
private Handler mHandler = new Handler(){
public void handleMessage(Message msg) {
switch (msg.what) {
case DOWN_UPDATE:
mProgress.setProgress(progress);
mProgressHint.setText(DigitalUtil.toFileSizeFormat(mContext, current)
+"/"+DigitalUtil.toFileSizeFormat(mContext, total));
break;
case DOWN_OVER:
if(downloadDialog != null) {
downloadDialog.dismiss();
}
installApk();
break;
default:
break;
}
};
};
public UpdateManager(Context context) {
this.mContext = context;
}
public void setApkUrl(String apkUrl) {
this.apkUrl = apkUrl;
}
//外部接口讓主Activity調用
public void checkUpdateInfo(){
showNoticeDialog();
}
private void showNoticeDialog(){
AlertDialog.Builder builder = new Builder(mContext);
builder.setTitle("軟件版本更新");
builder.setMessage(updateMsg);
builder.setPositiveButton("下載", 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();
}
public void beginUpdate(String apkUrl) {
this.apkUrl = apkUrl;
showDownloadDialog();
}
public void beginUpdate() {
showDownloadDialog();
}
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.progress);
mProgressHint = (TextView)v.findViewById(R.id.progressHint);
builder.setView(v);
builder.setNegativeButton("取消", new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
interceptFlag = true;
mHandler.removeMessages(DOWN_UPDATE);
mHandler.removeMessages(DOWN_OVER);
}
});
downloadDialog = builder.create();
downloadDialog.show();
downloadApk();
}
private Runnable mdownApkRunnable = new Runnable() {
@Override
public void run() {
try {
URL url = new URL(apkUrl);
HttpURLConnection conn = (HttpURLConnection)url.openConnection();
conn.connect();
int length = conn.getContentLength();
InputStream is = conn.getInputStream();
File file = new File(savePath);
if(!file.exists()){
file.mkdir();
}
File apkFile = new File(saveFileName);
if(apkFile.exists()) {
apkFile.delete();
}
FileOutputStream fos = new FileOutputStream(apkFile);
int count = 0;
byte buf[] = new byte[1024];
do{
int numread = is.read(buf);
count += numread;
progress =(int)(((float)count / length) * 100);
current = count;
total = length;
//更新進度
mHandler.sendEmptyMessage(DOWN_UPDATE);
if(numread <= 0){
//下載完成通知安裝
mHandler.sendEmptyMessage(DOWN_OVER);
break;
}
fos.write(buf,0,numread);
}while(!interceptFlag);//點擊取消就停止下載.
if(interceptFlag && apkFile.exists()) {
apkFile.delete();
}
fos.close();
is.close();
conn.disconnect();
} catch (MalformedURLException e) {
e.printStackTrace();
} catch(IOException e){
e.printStackTrace();
}
}
};
/**
* 下載apk
* @param url
*/
private void downloadApk(){
interceptFlag = false;
downLoadThread = new Thread(mdownApkRunnable);
downLoadThread.start();
}
/**
* 安裝apk
* @param url
*/
private void installApk(){
File apkfile = new File(saveFileName);
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. 以上兩個類經過驗證，可以直接利用，只需檢測新版本的代碼。下面給出版本更新的用法。
（1）在剛啟動應用時，檢測新版本，并提示用戶更新。
在MainActivity的onCreate方法中創建VersionUpdate對象，并檢測更新。
mVersionUpdate = new VersionUpdate(this); mVersionUpdate.setUpdateListener(updateListener); mVersionUpdate.checkUpdate();
其中UpdateListener定義為
VersionUpdate.UpdateListener updateListener = new VersionUpdate.UpdateListener() {
@Override
public void onUpdate(double remoteVersion, double localVersion) {
if (remoteVersion > localVersion) {
mVersionUpdate.update();
}
}
};（2）在設置界面，檢測新版本，用戶點擊時提示用戶更新。
設置界面是一個Fragment，同樣也是在onCreate方法中創建VersionUpdate對象
mVersionUpdate = new VersionUpdate(getActivity()); mVersionUpdate.setUpdateListener(updateListener);
定義UpdateListener實例對象
VersionUpdate.UpdateListener updateListener = new VersionUpdate.UpdateListener() {
@Override
public void onUpdate(double remoteVersion, double localVersion) {
if (remoteVersion > localVersion) {
mNewFlag.setVisibility(View.VISIBLE);
} else {
mNewFlag.setVisibility(View.INVISIBLE);
}
}
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