Got Error When Try To Download Pdf File

In my application i'm trying to download PDF file from server and storing it in SD card, but when i try to download, the download always failed and the logcat says no handler found

Solution 1:

check below code: its work in >= 9 Android API.

public void file_download(String uRl) {

        //uRl = ;
        File direct = new File(Environment.getExternalStorageDirectory()
                + "/dhaval_files");

        if (!direct.exists()) {
            direct.mkdirs();
        }

        DownloadManager mgr = (DownloadManager) this
                .getSystemService(Context.DOWNLOAD_SERVICE);

        Uri downloadUri = Uri.parse(uRl);
        DownloadManager.Request request = new DownloadManager.Request(
                downloadUri);

        request.setAllowedNetworkTypes(
                DownloadManager.Request.NETWORK_WIFI
                        | DownloadManager.Request.NETWORK_MOBILE)
                .setAllowedOverRoaming(false).setTitle("Demo")
                .setDescription("Something useful. No, really.")
                .setDestinationInExternalPublicDir("/dhaval_files", "lecture3.pdf");

        mgr.enqueue(request);

    }

call above method using: file_download("http://moss.csc.ncsu.edu/~mueller/g1/lecture3.pdf");

---

For < 9 Android API use this way:

import java.io.BufferedInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.URL;
import java.net.URLConnection;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.os.Bundle;
import com.actionbarsherlock.app.SherlockActivity;

public class MainActivity extends Activity {

    ProgressDialog mProgressDialog;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        super.setTheme(R.style.Theme_Sherlock_Light);
        setContentView(R.layout.activity_main);

        mProgressDialog = new ProgressDialog(MainActivity.this);
        mProgressDialog.setMessage("A message");
        mProgressDialog.setIndeterminate(false);
        mProgressDialog.setMax(100);
        mProgressDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);

        // execute this when the downloader must be fired
        DownloadFile downloadFile = new DownloadFile();
        downloadFile
                .execute("http://moss.csc.ncsu.edu/~mueller/g1/lecture3.pdf");
    }

    private class DownloadFile extends AsyncTask<String, Integer, String> {
        @Override
        protected String doInBackground(String... sUrl) {
            try {
                URL url = new URL(sUrl[0]);
                URLConnection connection = url.openConnection();
                connection.connect();
                // this will be useful so that you can show a typical 0-100%
                // progress bar
                int fileLength = connection.getContentLength();

                // download the file
                InputStream input = new BufferedInputStream(url.openStream());
                OutputStream output = new FileOutputStream("/sdcard/lecture3.pdf");

                byte data[] = new byte[1024];
                long total = 0;
                int count;
                while ((count = input.read(data)) != -1) {
                    total += count;
                    // publishing the progress....
                    publishProgress((int) (total * 100 / fileLength));
                    output.write(data, 0, count);
                }

                output.flush();
                output.close();
                input.close();
            } catch (Exception e) {
            }
            return null;
        }

        @Override
        protected void onPreExecute() {
            super.onPreExecute();
            mProgressDialog.show();
        }

        @Override
        protected void onProgressUpdate(Integer... progress) {
            super.onProgressUpdate(progress);
            mProgressDialog.setProgress(progress[0]);
        }

    }
}

both code is working it download PDF file.

Here is Best Answer

Solution 2:

Try this out

var win = Ti.UI.createWindow({
navBarHidden: true,
backgroundColor: 'blue'
});
win.open();

var button = Ti.UI.createButton({
title: 'Get PDF',
height: 50,
width: 200,
top: 20
});
win.add(button);
button.addEventListener('click', function(e) {
var xhr = Ti.Network.createHTTPClient();
xhr.onload = function() {
    var f =    Ti.Filesystem.getFile(Titanium.Filesystem.externalStorageDirectory,"test.pdf");
    f.write(this.responseData);
    var intent = Ti.Android.createIntent({
        action : Ti.Android.ACTION_VIEW,
        type : 'application/pdf',
        data : f.getNativePath()
    });
    Ti.Android.currentActivity.startActivity(intent);
};

xhr.open("GET", "http://www.appcelerator.com/assets/The_iPad_App_Wave.pdf");
xhr.send();
});

Or try this out

public void downloadPdfContent(String urlToDownload){

URLConnection urlConnection = null;

try{

    URL url = new URL(urlToDownload);

    //Opening connection of currrent url

    urlConnection = url.openConnection();
    urlConnection.connect();

    //int lenghtOfFile = urlConnection.getContentLength();


String PATH = Environment.getExternalStorageDirectory() + "/1/";

File file = new File(PATH);
file.mkdirs();
File outputFile = new File(file, "test.pdf");
FileOutputStream fos = new FileOutputStream(outputFile);

InputStream is = url.openStream();


byte[] buffer = new byte[1024];

int len1 = 0;

while ((len1 = is.read(buffer)) != -1) {
    fos.write(buffer, 0, len1);
}

fos.close();
is.close();

 System.out.println("--pdf downloaded--ok--"+urlToDownload);

}catch (Exception e) {
    // TODO: handle exception
    e.printStackTrace();

}

}