Open Pdf file using third party on click on list view item

Question

I have PDF files in my assets folder now i am able to view that PDF files in list view .But the problem is now on click of any pdf i want to open pdf in my pdf viewer. Here is my code

    public class MainActivity extends Activity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        AssetManager asset = getAssets();
        try {
            final String[] arrdata = asset.list("PDFfolder");
            List<String> pdflist = new ArrayList<String>();
            int size = arrdata.length;
            for(int i = 0;i<size;i++)
            {
              if(arrdata[i].contains(".pdf"))

              {
                pdflist.add(arrdata[i]); 
               }
            }
            ArrayAdapter<String> adapter= new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1,pdflist);
            ListView listView = (ListView) findViewById(R.id.listView1);
            listView.setAdapter(adapter);
                    listView.setOnItemClickListener(new OnItemClickListener() {

            @Override
             public void onItemClick(AdapterView<?> parent, View view,
                        int position, long id) {
                if(position == 0 ) {
                    File pdffile = new File("file:///android_assets/AAI.pdf");
                    //File ff = new File(getAssets().open("AAI.pdf"));
                     Uri path = Uri.fromFile(pdffile);
                     Intent intent = new Intent(Intent.ACTION_VIEW);
                     intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
                     intent.setDataAndType(path, "application/pdf");
                     startActivity(intent);    
                     }

                }

        });
    } catch (IOException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

     }
}

Now please help me out how to open it using intent from my assets folder. i am getting error of having no activity found to handle intent as i already have pdfviewer in my phone.

try answer given in this link http://stackoverflow.com/questions/17453105/android-open-pdf-file — Shruti, Apr 09 '14 at 11:43
But the link given by you has pdf file in SD card but my files are in assets folder... — user3387601, Apr 09 '14 at 11:48
modify the file path using these links https://www.google.co.in/search?client=ubuntu&channel=fs&q=get+file+from+assests+folder+android&ie=utf-8&oe=utf-8&gfe_rd=cr&ei=MTZFU8KRFMXN8gfK_IEo — Shruti, Apr 09 '14 at 12:00

score 0 · Answer 1 · answered Apr 10 '14 at 07:10

You need an app installed to handle opening the PDF. You should use the Intent Chooser, like so:

File file = new File(Environment.getExternalStorageDirectory().getAbsolutePath() +"/"+ filename);
Intent target = new Intent(Intent.ACTION_VIEW);
target.setDataAndType(Uri.fromFile(file),"application/pdf");
target.setFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);

Intent intent = Intent.createChooser(target, "Open File");
try {
    startActivity(intent);
} catch (ActivityNotFoundException e) {
    // Instruct the user to install a PDF reader here, or something
}

The files in the assets directory doesn't get unpacked. Instead they are read directly from the APK ZIP file.

So, you really can't make stuff that expects a file accept an asset 'file'.

Instead you'll have to extract the asset and write it to a separate file ,like this :

File f = new File(getCacheDir()+"/fileName.pdf");
  if (!f.exists()) try {

    InputStream is = getAssets().open("fileName.pdf");
    int size = is.available();
    byte[] buffer = new byte[size];
    is.read(buffer);
    is.close();


    FileOutputStream fos = new FileOutputStream(f);
    fos.write(buffer);
    fos.close();
  } catch (Exception e) { throw new RuntimeException(e); }

Also you can use the AssetManager to manage files in your asset folder. In the activity, call getAssets () method to get an AssetManager Instance.

Hope it helps you.

Is it not possible without extracting....Because i have read it here http://stackoverflow.com/questions/13517412/how-to-open-a-pdf-file-from-res-raw-folder Here also they haven't given solution can you please look at my code and tell me what i will i have to do?Any help wud be appreciated — user3387601, Apr 11 '14 at 12:31
Thanks @Shruti ...But i have pdf names in list view i have to open different pdfs on click of different names.... — user3387601, Apr 19 '14 at 06:06

Arpit Patel · Answer 2 · 2016-04-14T08:27:43.497

Work perfectly in my project try this code

/**
         * get on item click listener
         */
        userList.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> parent, View v,
                                    final int position, long id) {

                TextView tv_paper_name = (TextView) v.findViewById(R.id.tv_paper_name);
                String PaperName = tv_paper_name.getText().toString();
                File extStore = Environment.getExternalStorageDirectory();
                File myFile = new File(extStore.getAbsolutePath() + "/Exam Papers/"+PaperName+".pdf");

                if (myFile.exists()) {

                File pdfFile = new File(Environment.getExternalStorageDirectory() + "/Exam Papers/" +PaperName+".pdf");  // -> filename
                Uri path = Uri.fromFile(pdfFile);
                Intent pdfIntent = new Intent(Intent.ACTION_VIEW);
                pdfIntent.setDataAndType(path, "application/pdf");
                pdfIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);

                    try {
                    startActivity(pdfIntent);
                    } catch (ActivityNotFoundException e) {
                        Toast.makeText(MainActivity.this, "No Application available to view PDF", Toast.LENGTH_SHORT).show();
                    }
                }else{
                    Toast.makeText(MainActivity.this, "Download file first", Toast.LENGTH_SHORT).show();
                }


            }
        });

Open Pdf file using third party on click on list view item

2 Answers2