Problem in installing a 3rd party App onto the SD card

vengeance_mj · by **vengeance_mj** » Fri May 28, 2010 8:46 am

Hi Guys,
I am trying to install a 3rd party free app through code. Here's the file which downloads the apk from the web-site, stores it on a SD Card.

Syntax: [ Download ] [ Hide ]

Using java Syntax Highlighting

public class DownloadFile extends Activity implements View.OnClickListener {
 
        private static final int WAIT_DIALOG_KEY = 123;
        private ProgressDialog waitDialog;
        private String url, root = "/data/data/wms.apps.android/", filename;
        private boolean isDownloaded = false;
        private Bitmap bitmap;
        private ImageView image;
        private File downloadFile;
        private TextView tv;
 
        private class DownloadTask extends AsyncTask<Void, String, Void> {
 
                @Override
                protected Void doInBackground(Void... arg0) {
                        // TODO Auto-generated method stub
                        try {
                                URL imageUrl = new URL(url);
                                InputStream in = openHttpConnection(imageUrl);
                                // bitmap = BitmapFactory.decodeStream(in);
                                ByteArrayBuffer buffer = new ByteArrayBuffer(500);
 
                                int byteRead = 0;
 
                                while ((byteRead = in.read()) != -1) {
                                        buffer.append(byteRead);
                                }
                                String filename = Environment.getExternalStorageDirectory()
                                                + "/megan.apk";
                                downloadFile = new File(filename);
                                // downloadFile = new File(root, "test.apk");
                                FileOutputStream out = new FileOutputStream(downloadFile);
                                out.write(buffer.toByteArray());
                                in.close();
                                out.close();
                                isDownloaded = true;
 
                        } catch (Exception e) {
 
                        }
                        return null;
                }
 
                private InputStream openHttpConnection(URL aUrl) {
                        InputStream in = null;
                        try {
                                URLConnection connection = aUrl.openConnection();
 
                                HttpURLConnection httpConnection = (HttpURLConnection) connection;
                                httpConnection.setAllowUserInteraction(false);
                                httpConnection.setInstanceFollowRedirects(true);
                                httpConnection.setRequestMethod("GET");
 
                                httpConnection.connect();
 
                                in = httpConnection.getInputStream();
                        } catch (Exception e) {
 
                        }
                        return in;
                }
 
                protected void onPreExecute() {
                        showDialog(WAIT_DIALOG_KEY);
                }
 
                protected void onPostExecute(Void voids) {
                        // image.setImageBitmap(bitmap);
                        if (isDownloaded)
                                tv.setText("APK downloaded");
                        waitDialog.dismiss();
                        // Toast.makeText(DownloadFile.this, "Done", Toast.LENGTH_SHORT)
                        // .show();
 
                }
        }
 
        protected Dialog onCreateDialog(int id) {
                switch (id) {
                case WAIT_DIALOG_KEY: {
                        waitDialog = new ProgressDialog(this);
                        waitDialog.setMessage("Please wait while loading...");
                        waitDialog.setIndeterminate(true);
                        waitDialog.setCancelable(true);
                        return waitDialog;
                }
                }
                return null;
        }
 
        @Override
        public void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.list);
                Bundle intentData = this.getIntent().getExtras();
                url = intentData.getString("url");
        }
 
        public void onStart() {
                super.onStart();
                new DownloadTask().execute();
                tv = (TextView) findViewById(R.id.label);
                image = (ImageView) findViewById(R.id.image);
                Button aButton = (Button) findViewById(R.id.install);
                aButton.setOnClickListener(this);
 
                if (isDownloaded)
                        tv.setText("Image downloaded");
                else
                        tv.setText("Image download failed");
 
        }
 
 
Parsed in 0.041 seconds,  using GeSHi 1.0.8.4

Then when the user clicks on the Install button I am running this code

Syntax: [ Download ] [ Hide ]

Using java Syntax Highlighting

 
        public void onClick(View arg0) {
                // TODO Auto-generated method stub
                boolean success;
                int result = Settings.Secure.getInt(getContentResolver(),
                                Settings.Secure.INSTALL_NON_MARKET_APPS, 0);
                if (result == 0)
                        success = Settings.Secure.putString(getContentResolver(),
                                        Settings.Secure.INSTALL_NON_MARKET_APPS, "1");
                Intent intent = new Intent();
                intent.setAction(android.content.Intent.ACTION_VIEW);
                intent.setDataAndType(Uri.fromFile(downloadFile),
                                "application/vnd.android.package-archive");
                startActivity(intent);
        }
} //End of class file
 
Parsed in 0.032 seconds,  using GeSHi 1.0.8.4

I read somewhere in order to install 3rd party apps we need to set INSTALL_NON_MARKET_APPS. For setting these settings , is it needed to use any permission in the manifest file?
Also, when I did a logcat the error was

Code: Select all: Unable to read AndroidManifest.xml of /sdcard/test.apk and then it threw a IOException

What exactly could be the problem? I would very much apreciate it if somebody would tell me what are the steps needed to install a 3rd party application.

Thanks