Android Create folders and files and install other APK

First, create folders under Android

File sd=environment.getexternalstoragedirectory ();        String Path=sd.getpath () + "/notes";        File File=new file (path);        if (!file.exists ())           file.mkdir ();

II. create files under Android

HttpClient HttpClient = new Defaulthttpclient (); HttpGet httpget= New HttpGet ("http://img3.3lian.com/2006/016/09/031.jpg"); HttpResponse HttpResponse = Httpclient.execute (HttpGet), if (Httpresponse.getstatusline (). GetStatusCode () = = 200) { Total_length = Httpresponse.getentity (). Getcontentlength ();              is = Httpresponse.getentity (). getcontent ();              File File = new file (Environment.getexternalstoragedirectory (), "aupdata.jpg");              FOS = new FileOutputStream (file);              bis = new Bufferedinputstream (IS);           byte[] buffer = new byte[1024];         byte [] result_two = new byte [(int) total_length];             int len = 0;          int total=0;                        while (len = bis.read (buffer)) >-1) {system.arraycopy (buffer, 0, Result_two, Total, Len);        Fos.write (buffer, 0, Len);                   Total = Total + len; }        }

After the FileOutputStream defines the file, you can create the corresponding file by writing it with the. Write method.

Third, Android install other APK

                        Intent Intent = new Intent (); intent.setaction (Intent.action_view); File Install_file = new file (Environment.getexternalstoragedirectory (), "myweb.apk"); Intent.setdataandtype ( Uri.fromfile (Install_file), "application/vnd.android.package-archive"); StartActivity (intent);