Android实现打开各种文件的intent方法小结

本文实例讲述了Android实现打开各种文件的intent方法。分享给大家供大家参考，具体如下：

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;
}
}

希望本文所述对大家Android程序设计有所帮助。