android用于打开各种文件的intent(转)

http://www.cnblogs.com/leizhenzi/archive/2011/05/25/2056270.html

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;

//自定义android Intent类，

//可用于获取打开以下文件的intent

//PDF,PPT,WORD,EXCEL,CHM,HTML,TEXT,AUDIO,VIDEO

示例:

//这个不行，可能是因为PDF.apk程序没有权限访问其它APK里的asset资源文件,又或者是路径写错?

 //Intent it = getPdfFileIntent("file:///android_asset/helphelp.pdf");

 //下面这些都OK

 //Intent it = getHtmlFileIntent("/mnt/sdcard/tutorial.html");//SD卡主目录

//Intent it = getHtmlFileIntent("/sdcard/tutorial.html");//SD卡主目录,这样也可以

 Intent it = getHtmlFileIntent("/system/etc/tutorial.html");//系统内部的etc目录

 //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");//SD卡的download目录下

 //Intent it = getVideoFileIntent("/mnt/sdcard/ice.avi");

 //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获取一个用于打开HTML文件的intent

  public static Intent getHtmlFileIntent( String param )

  {

    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获取一个用于打开图片文件的intent

  public static Intent getImageFileIntent( 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, "image/*");

    return intent;

  }

  //android获取一个用于打开PDF文件的intent

  public static Intent getPdfFileIntent( 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/pdf");

    return intent;

  }

//android获取一个用于打开文本文件的intent

 public static Intent getTextFileIntent( 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获取一个用于打开音频文件的intent

  public static Intent getAudioFileIntent( 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, "audio/*");

    return intent;

  }

  //android获取一个用于打开视频文件的intent

  public static Intent getVideoFileIntent( 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获取一个用于打开CHM文件的intent

  public static Intent getChmFileIntent( 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/x-chm");

    return intent;

  }

//android获取一个用于打开Word文件的intent

  public static Intent getWordFileIntent( 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获取一个用于打开Excel文件的intent

  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获取一个用于打开PPT文件的intent

  public static Intent getPptFileIntent( 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-powerpoint");

    return intent;

  }

}