android - How to open a file using installed apps? -

i want open given file using installed apps in android. how can that?

i using following code google returns "no app open file". if open file in other file managers, see different options open file. code:

public void open(view v) {         string name = ((textview) v).gettext().tostring();         file f = new file(path + name);         if (f.isdirectory()) {             showfiles(f);         } else if (f.isfile()) {             intent openfileintent = new intent(intent.action_view);             openfileintent.setdata(uri.fromfile(f));             if (openfileintent.resolveactivity(getpackagemanager()) != null) {                 startactivity(openfileintent);             } else {                 toast.maketext(this, "no app open file.",                         toast.length_short).show();             }         } else {             toast.maketext(this, "selected item not file.",                     toast.length_short).show();         }     } 

you should specify mime type android knows app capable of opening / viewing file. should work you:

public void open(view v) {     string name = ((textview) v).gettext().tostring();     file f = new file(path + name);     if (f.isdirectory()) {         showfiles(f);     } else if (f.isfile()) {         intent openfileintent = new intent(intent.action_view);         openfileintent.setdataandtype(uri.fromfile(f), getmimetypefromfile(f));         if (openfileintent.resolveactivity(getpackagemanager()) != null) {             startactivity(openfileintent);         } else {             toast.maketext(this, "no app open file.",                     toast.length_short).show();         }     } else {         toast.maketext(this, "selected item not file.",                 toast.length_short).show();     } }  private string getmimetypefromfile(file f){     uri fileuri = uri.fromfile(f);     string fileextension             = mimetypemap.getfileextensionfromurl(fileuri.tostring());     string filetype              = mimetypemap.getsingleton().getmimetypefromextension(fileextension);     if (filetype == null)          filetype = "*/*";     return filetype; }