Programming access to Android Market

再次写这个是非常郁闷的，主要怪我，live writter 2011还不支持，辛辛苦苦写了半天，不小心按住了刷新键，结果写的东西全没了，虽然很气愤，虽然手已经冰凉，还是坚持又整理了一遍，也希望51CTO以后能随时保存草稿，这是一个非常严重的问题：

如果你已经在Android Market上发布了应用程序，怎么通过编程方式访问Android Market呢？谷歌大神已经为我们提供好了接口-An open-source API for the Android Market，不仅Android程序可以访问， Ruby 和PHP也提供了借口，更多信息请参考：http://code.google.com/p/android-market-api/

OK，废话少说，That‘s it!

Current progress

• You can browse market with any carrier or locale you want.
• Search for apps using keywords or package name.
• Retrieve an app info using an app ID.
• Retrieve comments using an app ID.
• Get PNG screenshots and icon

Requirement

1. *(1) A Google Account
2. *(2) Include androidmarketapi-X.Y.jar and protobuf-java-X.Y.Z.jar in your classpath,           
   下载地址：http://code.google.com/p/android-market-api/downloads/list

要把这两个JAR导入到项目中去.由于代码比较好理解，就不添加注释了:-)

HowToSearchApps:

 You can search by using :

By package name;

String query = "pname:<package>";

 By developper name :

String query = "pub:<name>";

 通过包名查看程序关键代码：

String query = "pname:com.luckyxmobile.timers4me";// 通过包名查找程序
MarketSession session = new MarketSession();
session.login("your gmail account", "your password");
AppsRequest appsRequest = AppsRequest.newBuilder().setQuery(query)
.setStartIndex(0).setEntriesCount(10).setWithExtendedInfo(true).build();
session.append(appsRequest, new MarketSession.Callback<AppsResponse>() {
@Override
public void onResult(ResponseContext context, AppsResponse response) {
TextView text = (TextView) findViewById(R.id.text);
String id = response.getApp(0).getId();
String creatorID = response.getApp(0).getCreatorId();
String creator = response.getApp(0).getCreator();
String packageName = response.getApp(0).getPackageName();
String price = response.getApp(0).getPrice();
String rating = response.getApp(0).getRating();
int ratingCount = response.getApp(0).getRatingsCount();
String title = response.getApp(0).getTitle();
String version = response.getApp(0).getVersion();
int versionCode = response.getApp(0).getVersionCode();
int serializedSize = response.getApp(0).getSerializedSize();
ExtendedInfo extendedInfo = response.getApp(0).getExtendedInfo();
text.setText("id:" + id + "\nCreatorId:" + creatorID
+ "\nCreator:" + creator + "\nPackageName:"
+ packageName + "\nPrice:" + price + "\nrating:"
+ rating + "\nRatingCount:" + ratingCount + "\ntitle:"
+ title + "\nVersion:" + version + "\nversionCode:"
+ versionCode + "\nDownloadsCount:"
+ extendedInfo.getDownloadsCount()
+ "\nDownloadsCountText:"
+ extendedInfo.getDownloadsCountText()
+ "\nInstallSize:" + extendedInfo.getInstallSize()
+ "\nSerializedSize:" + serializedSize
+ "\nDecription:" + extendedInfo.getDescription()
+ "\nContactEmail:" + extendedInfo.getContactEmail()
+ "\nContactPhone:" + extendedInfo.getContactPhone()
+ "\nContactWebsite:"
+ extendedInfo.getContactWebsite());
}
});
.flush();//发送并刷新

运行结果：

 

HowToGetAppComments  ：

CommentsRequest commentsRequest = CommentsRequest.newBuilder().setAppId("7065399193137006744") .setStartIndex(0).setEntriesCount(10)build();
session.append(commentsRequest, new Callback<CommentsResponse>() {
@Override
public void onResult(ResponseContext context, CommentsResponse response) {
System.out.println("Response : " + response);
// response.getComments(0).getAuthorName()
// response.getComments(0).getCreationTime()
// ...
} });
session.flush();

HowToGetAppScreenshot   ：

GetImageRequest imgReq = GetImageRequest.newBuilder().setAppId("-7934792861962808905").setImageUsage(AppImageUsage.SCREENSHOT).setImageId("1").build();
session.append(imgReq, new Callback<GetImageResponse>() {
@Override
public void onResult(ResponseContext context, GetImageResponse response) {
try {
FileOutputStream fos = new FileOutputStream("icon.png");
fos.write(response.getImageData().toByteArray());
fos.close();
} catch(Exception ex) {
ex.printStackTrace();
  }
} });
session.flush();

最后提醒一下哦，不要忘记在配置文件中加上访问Internet的权限，当然了，我只是抛砖引玉的作用，动手才能更加精彩，Good luck！