Develop Reference

play video from android internal storage

I'm trying to play video files stored in android internal memory through intent. Files exist there but when i try to play them through intent, it give me the error "Media file not supported" or "can't play video" depending on device. I couldn't find where i'm wrong. here is my code
File mydir = activity.getDir("Videos", Context.MODE_PRIVATE);
File fileWithinMyDir = new File(mydir, filename);
String videoResource = fileWithinMyDir.getPath();
Uri intentUri = Uri.parse(videoResource);
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setDataAndType(intentUri, "video/mp4");
startActivity(intent);
I don't know where i'm wrong and what should i do. any help would be much appreciated. Thank you :)

Thank you so much friends for participation, your efforts are very much appreciated. I'v found the solution of my problem. There is need to set file read true before playing it.
fileWithinMyDir.setReadable(true, false);
Now here is complete code of intent to play mp4 video from internal storage of android.
File mydir = activity.getDir("Videos", Context.MODE_PRIVATE);
File fileWithinMyDir = new File(mydir, headingsList.get(mPosition));
fileWithinMyDir.setReadable(true, false);
String videoResource = fileWithinMyDir.getPath();
Uri intentUri = Uri.fromFile(new File(videoResource));
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setDataAndType(intentUri, "video/mp4");
startActivity(intent);

This code works for me:
Uri fileUri = Uri.fromFile(new File(String file_path));
Intent intent = new Intent();
intent.setAction(Intent.ACTION_VIEW);
intent.setDataAndType(fileUri, URLConnection.guessContentTypeFromName(fileUri.toString()));
startActivity(intent);

How to open PDF file stored in getFilesDir().getPath() path

I have downloaded a PDF file into my application in the path getFilesDir().getPath()
When I try to open the same file using below code :
String path = getBaseContext().getFilesDir().getPath()+"/myfile.pdf";
File file = new File(path);
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(file), "application/pdf");
intent.setFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
startActivity(intent);
I am getting The target file doesnot exist error from pdf reader.
When I browse my device for myfile.pdf path, It's located in "/sdcard/Android/data/com.***.***/files/data/com.***.***/files/myfile.pdf" .
If I hardcode the above path then also I am getting the same error.
Please let me know how to read file from that path.

use: Environment.getExternalStorageDirectory().getAbsolutePath()
File file = new File(Environment.getExternalStorageDirectory().getAbsolutePath()+"/myfile.pdf");
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(Uri.fromFile(file), "application/pdf");
intent.setFlags(Intent.FLAG_ACTIVITY_NO_HISTORY);
startActivity(intent);

How to import the contacts from a .vcf file with the use of intents in a service(not in activity)

I am able to import the contacts from a .vcf file when i do tat in activity but not possible in service , can anyone help me out of it.

Check this one:
Intent intent2 = new Intent(Intent.ACTION_VIEW);
String storage_path = Environment.getExternalStorageDirectory().toString()+ File.separator + "Contacts.vcf";
intent2.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent2.setDataAndType(Uri.fromFile(new File(storage_path)),"text/x-vcard"); //storage path is path of your vcf file.
this.startActivity(intent2);
You need to add the flag FLAG_ACTIVITY_NEW_TASK to start the Activity from a service .

Try with this
File file = new File(filePath);
Intent intent1 = new Intent();
intent1.setAction(Intent.ACTION_VIEW);
Uri data = Uri.fromFile(file);
intent1.setDataAndType(data, "text/x-vcard");
startActivity(intent1);

How to read a pdf file stored in sdcard using adobe reader installed in the android device?

i new to android application developemnt. I am trying to open the pdf file stored in sd card.I used this code snippet but this opens the viewer in the device but not the file given in the path. Any help appreciated.
Intent intent = new Intent(Intent.ACTION_VIEW,Uri.parse("Environment.getExternalStorageDirectory().getPath()+/sample.pdf"));
intent.setType("application/pdf");
intent.setPackage("com.adobe.reader"); selects the adobe reader directly
PackageManager pm = getPackageManager();
List<ResolveInfo> activities = pm.queryIntentActivities(intent,0);
if (activities.size() >= 0)
{
startActivity(intent);
} else {
Toast.makeText(this, "No Application Available to View PDF",
Toast.LENGTH_SHORT).show();
}

you can read pdf file from sdcard by giving the path and try the following.
File pdfFile = new File(path);
if(pdfFile.exists())
{
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(uractivity.this, resource.getString(R.string.noapplicationpdf), Toast.LENGTH_LONG).show();
}
}

You can try something like
Intent intent = new Intent(Intent.ACTION_VIEW);
File file = new File(filename);
intent.setDataAndType( Uri.fromFile( file ), "application/pdf" );
startActivity(intent);
or
Intent intent = new Intent();
intent.setPackage("com.adobe.reader");
intent.setDataAndType(Uri.fromFile(file), "application/pdf");
startActivity(intent);

Opening pdf file programmatically is going into menu page?

How come every time i try to open a pdf file in my SDCARD using the following code, it doesn't actually open the pdf file itself, but goes into the menu of adobe reader? Is there anything wrong with my code?
Intent intent = new Intent();
File pdfFile = new File("/sdcard/sample.pdf");
Uri path = Uri.fromFile(pdfFile);
intent.setAction(Intent.ACTION_VIEW);
intent.setData(path);
intent.setType("application/pdf");
intent.setPackage("com.adobe.reader");
startActivity(intent);

No, there's nothing wrong. You've set the type to pdf and specified the package as adobe.reader. What that does is fire off an intent to launch the pdf in adobe reader. There's no way to display a pdf directly in your app without using a library (or writing code yourself) to render PDFs and display them.
Note that if you only set the type and not the package, the system will find whatever app is available to display PDFs
EDIT
You can try something like
Intent intent = new Intent(Intent.ACTION_VIEW);
File file = new File( filename );
intent.setDataAndType( Uri.fromFile( file ), "application/pdf" );
startActivity(intent);
or
Intent intent = new Intent();
intent.setPackage("com.adobe.reader");
intent.setDataAndType(Uri.fromFile(file), "application/pdf");
startActivity(intent);

Here I am giving my pdf file name. You give your file name.
private static String FILE = Environment.getExternalStorageDirectory().getPath()+"/TestPDF.pdf";
File file = new File(FILE);
if (file.exists()) {
Uri path = Uri.fromFile(file);
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(path, "application/pdf");
intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
try {
startActivity(intent);
}
catch (ActivityNotFoundException e) {
Toast.makeText(this,
"No Application Available to View PDF",
Toast.LENGTH_SHORT).show();
}
}