android用于打开各种文件的intent

package com.keysense.trafficmanagement.activity;

import java.io.File;

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.widget.Toast;

public class TestActivity extends Activity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);
		Toast.makeText(this, "TestActivity", Toast.LENGTH_LONG).show();
		
		//PDF,PPT,WORD,EXCEL,CHM,HTML,TEXT,AUDIO,VIDEO  
	    //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 );  
		
	}
	
	
     //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;  
     }  
}