Hi All,
I have an app that downloads a pdf from a server and tries to open it
with an itent:
Intent intent = new Intent();
intent.setAction(android.content.Intent.ACTION_VIEW);
File file = new File(filepath+filename);
intent.setDataAndType(Uri.fromFile(file), "application/pdf");
try {
startActivity(intent);
} catch (ActivityNotFoundException e) {
final Exception ef = e;
txt2.post(new Runnable() {
public void run() {
txt2.setText(" "+ef);
}
});
}
Everything works great if any applications are installed on the device
that will open a pdf. But, if no apps are installed, this part of the
code just segfaults (my catching of the exception apparently does not
work).
Here is the logcat output
I/ActivityManager( 61): Starting activity: Intent
{ act=android.intent.action.VIEW dat=file:///sdcard/arXiv/tmp.pdf
typ=application/pdf }
W/dalvikvm( 322): threadid=7: thread exiting with uncaught exception
(group=0x4001d800)
E/AndroidRuntime( 322): FATAL EXCEPTION: Thread-9
E/AndroidRuntime( 322): java.lang.NullPointerException
E/AndroidRuntime( 322): at
com.commonsware.android.arXiv.singleitemwindow
$1.run(singleitemwindow.java:243)
W/ActivityManager( 61): Force finishing activity
com.commonsware.android.arXiv/.singleitemwindow
So, my question is can I somehow determine if any app is available for
application/pdf mimetype ahead of time. Or, can I prevent the code
from dying here and tell the user to install a pdf reader app?
-Jack
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