apk installieren von remote-server

Dies ist der code, den ich verwenden, ist es nicht für ein webview, aber Sie konnte einfach überschreiben von url laden und anwenden dieser code sowieso..
Die Absicht, an der Unterseite ist die Antwort auf Ihre Frage.

/**
 * Main
 * When started, will download latest version of AN APPLICATIONand launch an install
 * Is just a dialog
 * 
 * REQUIRES SDCARD
 * @author Dag
 *
 */
public class Main extends Activity {
ProgressDialog dlDialog;
String path = Environment.getExternalStorageDirectory()+ "/"; //Path to where you want to save the file
String inet = "http://www.google.com/test.apk"; //Internet path to the file
String cachedir = "";                                       
String filename = "TMC.apk";                                

public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    TextView webview = new TextView(this);
    setContentView(webview);

    File getcache = this.getCacheDir();
    cachedir = getcache.getAbsolutePath();

    dlDialog = new ProgressDialog(Main.this);
    dlDialog.setProgressStyle(ProgressDialog.STYLE_SPINNER);
    dlDialog.setTitle("Downloadin");
    dlDialog.setMessage("Connecting");
    dlDialog.show();

    new Thread(new Runnable() {

        public void run() {

            String filePath = path;

            InputStream is = null;
            OutputStream os = null;
            URLConnection URLConn = null;

            try {
                URL fileUrl;
                byte[] buf;
                int ByteRead = 0;
                int ByteWritten = 0;
                fileUrl = new URL(inet);

                URLConn = fileUrl.openConnection();

                is = URLConn.getInputStream();

                String fileName = inet.substring(inet.lastIndexOf("/") + 1);

                File f = new File(filePath);
                f.mkdirs();
                String abs = filePath + fileName;
                f = new File(abs);                      


                os = new BufferedOutputStream(new FileOutputStream(abs));

                buf = new byte[1024];

                /*
                 * This loop reads the bytes and updates a progressdialog
                 */
                while ((ByteRead = is.read(buf)) != -1) {

                    os.write(buf, 0, ByteRead);
                    ByteWritten += ByteRead;

                    final int tmpWritten = ByteWritten;
                    runOnUiThread(new Runnable() {

                        public void run() {
                            dlDialog.setMessage(""+tmpWritten+" Bytes");
                        }

                    });
                }

                runOnUiThread(new Runnable() {

                    public void run() {
                        dlDialog.setTitle("Startar");
                    }

                });
                is.close();
                os.flush();
                os.close();


                Thread.sleep(200);

                dlDialog.dismiss();

                Intent intent = new Intent(Intent.ACTION_VIEW);
                intent.setDataAndType(Uri.fromFile(new File(abs)),
                        "application/vnd.android.package-archive");
                startActivity(intent);
                finish();

            } catch (Exception e) {
                e.printStackTrace();

            }

        }
    }).start();

}
}