android 更具File 启动不同的intent

import java.io.File;import java.util.HashMap;import android.content.Intent;import android.net.Uri;public class FileIntentUtil {private static final int INTENT_IMAGE = 1;private static final int INTENT_AUDIO = 2;private static final int INTENT_VIDEO = 3;private static final int INTENT_PACHAGE = 4;private static final int INTENT_WEBTEXT = 5;private static final int INTENT_TEXT = 6;private static final int INTENT_WORD = 7;private static final int INTENT_EXCEL = 8;private static final int INTENT_PPT = 9;private static final int INTENT_PDF = 10;private static final int INTENT_CHM = 11;private static final int INTENT_MAX = 12;private static FileIntentUtil _instance;private static Object lockObj = new Object();private final HashMap<String, Integer> map;public Intent getFileIntent(String filepath) {return getFileIntent(new File(filepath));}public Intent getFileIntent(File file) {String filename = file.getName();String[] ss = filename.split("\\.");int type = -1;if (ss.length > 1) {String ext = ss[ss.length - 1];if (ext != null && map.containsKey(ext)) {type = map.get(ext);}}if (type > 0 && type < INTENT_MAX) {Intent intent = new Intent();intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);intent.setAction(Intent.ACTION_VIEW);Uri uri = Uri.fromFile(file);switch (type) {case INTENT_AUDIO:intent.putExtra("oneshot", 0);intent.putExtra("configchange", 0);intent.setDataAndType(uri, "audio/*");break;case INTENT_CHM:intent.setDataAndType(uri, "application/x-chm");break;case INTENT_EXCEL:intent.setDataAndType(uri, "application/vnd.ms-excel");break;case INTENT_IMAGE:intent.setDataAndType(uri, "image/*");break;case INTENT_PDF:intent.setDataAndType(uri, "application/pdf");break;case INTENT_PACHAGE:intent.setDataAndType(Uri.fromFile(file),"application/vnd.android.package-archive");break;case INTENT_PPT:intent.setDataAndType(uri, "application/vnd.ms-powerpoint");break;case INTENT_TEXT:intent.setDataAndType(uri, "text/plain");break;case INTENT_VIDEO:intent.putExtra("oneshot", 0);intent.putExtra("configchange", 0);intent.setDataAndType(uri, "video/*");break;case INTENT_WEBTEXT:uri = Uri.fromFile(file).buildUpon().encodedAuthority("com.android.htmlfileprovider").scheme("content").encodedPath(file.toString()).build();intent.setDataAndType(uri, "text/html");break;case INTENT_WORD:intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);intent.setDataAndType(uri, "application/msword");break;}return intent;}return null;}private FileIntentUtil() {map = new HashMap<String, Integer>();// imagesmap.put("png", INTENT_IMAGE);map.put("gif", INTENT_IMAGE);map.put("jpg", INTENT_IMAGE);map.put("jpeg", INTENT_IMAGE);map.put("bmp", INTENT_IMAGE);// audiomap.put("mp3", INTENT_AUDIO);map.put("wav", INTENT_AUDIO);map.put("ogg", INTENT_AUDIO);map.put("midi", INTENT_AUDIO);// videomap.put("mp4", INTENT_VIDEO);map.put("rmvb", INTENT_VIDEO);map.put("avi", INTENT_VIDEO);map.put("flv", INTENT_VIDEO);// packagemap.put("jar", INTENT_PACHAGE);map.put("zip", INTENT_PACHAGE);map.put("rar", INTENT_PACHAGE);map.put("gz", INTENT_PACHAGE);map.put("apk", INTENT_PACHAGE);map.put("img", INTENT_PACHAGE);// web textmap.put("htm", INTENT_WEBTEXT);map.put("html", INTENT_WEBTEXT);map.put("php", INTENT_WEBTEXT);map.put("jsp", INTENT_WEBTEXT);// textmap.put("txt", INTENT_TEXT);map.put("java", INTENT_TEXT);map.put("c", INTENT_TEXT);map.put("cpp", INTENT_TEXT);map.put("py", INTENT_TEXT);map.put("xml", INTENT_TEXT);map.put("json", INTENT_TEXT);map.put("log", INTENT_TEXT);// wordmap.put("doc", INTENT_WORD);map.put("docx", INTENT_WORD);// excelmap.put("xls", INTENT_EXCEL);map.put("xlsx", INTENT_EXCEL);// pptmap.put("ppt", INTENT_PPT);map.put("pptx", INTENT_PPT);// pdfmap.put("pdf", INTENT_PDF);// chmmap.put("chm", INTENT_CHM);}public static FileIntentUtil instance() {if (_instance == null) {synchronized (lockObj) {if (_instance == null) {_instance = new FileIntentUtil();}}}return _instance;}}