Intent打开各种资源

来源：互联网发布：ubuntu 下载器推荐编辑：程序博客网时间：2024/05/16 15:50

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;  }}

注意

一定要在Manifest.xml中声明权限：<!-- 在SDCard中创建与删除文件权限 --><uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" /><!-- 往SDCard写入数据权限 --><uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

0 0