Android implement intent method to open various files _android

This article is an example of the Android implementation of the intent method to open various files. Share to everyone for your reference, specific as follows:

Import android.app.Activity;
Import Android.content.Intent;
Import Android.net.Uri;
Import Android.net.Uri.Builder;
Import Java.io.File;
Import android.content.Intent;
Custom Android Intent class,
//can be used to get intent that open the following file
//pdf,ppt,word,excel,chm,html,text,audio,video

Example:

This is not possible because the PDF.APK program does not have permission to access asset resource files in other apk, or is the path incorrectly written?
Intent it = getpdffileintent ("File:///android_asset/helphelp.pdf"); The following are ok//intent it = gethtmlfileintent ("/mnt/sdcard/tutorial.html");//sd Card home directory//intent it = gethtmlfileintent ("/ Sdcard/tutorial.html ");//sd card home directory, which can also Intent it = gethtmlfileintent ("/system/etc/tutorial.html ");//etc directory within the System//
Intent it = getpdffileintent ("/system/etc/helphelp.pdf");
Intent it = getwordfileintent ("/system/etc/help.doc"); Intent it = getexcelfileintent ("/mnt/sdcard/book1.xls")//intent it = getpptfileintent ("/mnt/sdcard/download/
Android_ppt.ppt ");//intent it = getvideofileintent ("/mnt/sdcard/ice.avi ") under the download directory of the//SD card;
Intent it = getaudiofileintent ("/mnt/sdcard/ren.mp3");
Intent it = getimagefileintent ("/mnt/sdcard/images/001041580.jpg");
Intent it = gettextfileintent ("/mnt/sdcard/hello.txt", false);
StartActivity (IT); public class Myintent {//android gets a Intent public static Intent gethtmlfileintent (String param) for opening HTML files {UrI uri = Uri.parse (param). Buildupon (). Encodedauthority ("Com.android.htmlfileprovider"). Scheme ("content").
  Encodedpath (param). build ();
  Intent Intent = new Intent ("Android.intent.action.VIEW");
  Intent.setdataandtype (URI, "text/html");
 return intent; //android get a Intent public static Intent getimagefileintent to open a picture file (String param) {Intent Intent = new Intent ("a
  Ndroid.intent.action.VIEW ");
  Intent.addcategory ("Android.intent.category.DEFAULT");
  Intent.addflags (Intent.flag_activity_new_task);
  Uri uri = uri.fromfile (new File (param));
  Intent.setdataandtype (URI, "image/*");
 return intent; //android get a Intent public static Intent getpdffileintent to open a PDF file (String param) {Intent Intent = new Intent ("a
  Ndroid.intent.action.VIEW ");
  Intent.addcategory ("Android.intent.category.DEFAULT");
  Intent.addflags (Intent.flag_activity_new_task);
  Uri uri = uri.fromfile (new File (param));
  Intent.setdataandtype (URI, "application/pdf");
 return intent; }//android gets aIntent public static Intent gettextfileintent for opening text files (String param, Boolean paramboolean) {Intent Intent = new Intent
 ("Android.intent.action.VIEW");
 Intent.addcategory ("Android.intent.category.DEFAULT");
 Intent.addflags (Intent.flag_activity_new_task);
 if (Paramboolean) {Uri uri1 = uri.parse (param); Intent.setdataandtype (Uri1, "Text/plain");
 else {Uri Uri2 = uri.fromfile (new File (param)); Intent.setdataandtype (Uri2, "Text/plain");
return intent; //android get a Intent public static Intent getaudiofileintent for opening audio files (String param) {Intent Intent = new Intent ("a
  Ndroid.intent.action.VIEW ");
  Intent.addflags (Intent.flag_activity_clear_top);
  Intent.putextra ("OneShot", 0);
  Intent.putextra ("Configchange", 0);
  Uri uri = uri.fromfile (new File (param));
  Intent.setdataandtype (URI, "audio/*");
 return intent; //android gets a Intent public static Intent getvideofileintent for opening video files (String param) {Intent Intent = new Intent ("
 Android.intent.action.VIEW "); Intent.addflags (Intent.flag_activity_clear_top);
  Intent.putextra ("OneShot", 0);
  Intent.putextra ("Configchange", 0);
  Uri uri = uri.fromfile (new File (param));
  Intent.setdataandtype (URI, "video/*");
 return intent; //android gets a Intent public static Intent getchmfileintent for opening a CHM file (String param) {Intent Intent = new Intent ("a
  Ndroid.intent.action.VIEW ");
  Intent.addcategory ("Android.intent.category.DEFAULT");
  Intent.addflags (Intent.flag_activity_new_task);
  Uri uri = uri.fromfile (new File (param));
  Intent.setdataandtype (URI, "Application/x-chm");
 return intent; //android gets a Intent public static Intent getwordfileintent for opening a Word file (String param) {Intent Intent = new Intent ("
  Android.intent.action.VIEW ");
  Intent.addcategory ("Android.intent.category.DEFAULT");
  Intent.addflags (Intent.flag_activity_new_task);
  Uri uri = uri.fromfile (new File (param));
  Intent.setdataandtype (URI, "Application/msword");
 return intent; //android gets a inten to open an Excel fileT public static Intent getexcelfileintent (String param) {Intent Intent = new Intent ("Android.intent.action.VIEW");
  Intent.addcategory ("Android.intent.category.DEFAULT");
  Intent.addflags (Intent.flag_activity_new_task);
  Uri uri = uri.fromfile (new File (param));
  Intent.setdataandtype (URI, "application/vnd.ms-excel");
 return intent; //android gets a Intent public static Intent getpptfileintent for opening a ppt file (String param) {Intent Intent = new Intent ("an
  Droid.intent.action.VIEW ");
  Intent.addcategory ("Android.intent.category.DEFAULT");
  Intent.addflags (Intent.flag_activity_new_task);
  Uri uri = uri.fromfile (new File (param));
  Intent.setdataandtype (URI, "Application/vnd.ms-powerpoint");
 return intent;

 }
}

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I hope this article will help you with the Android program.