java 判断文件类型是否是音频_Android判断文件类型（视频、音频、图片等） | 学步园...

痛定思痛。 2022-11-06 10:53 256阅读 0赞

MediaFile.java

package com.jaycee.vplayer.util;

import java.util.HashMap;

import java.util.Iterator;

/\*\*

\* 判断文件类型

\* MediaScanner helper class.

\*/

public class MediaFile \{

// comma separated list of all file extensions supported by the media scanner

public static String sFileExtensions;

// Audio file types

public static final int FILE\_TYPE\_MP3 = 1;

public static final int FILE\_TYPE\_M4A = 2;

public static final int FILE\_TYPE\_WAV = 3;

public static final int FILE\_TYPE\_AMR = 4;

public static final int FILE\_TYPE\_AWB = 5;

public static final int FILE\_TYPE\_WMA = 6;

public static final int FILE\_TYPE\_OGG = 7;

private static final int FIRST\_AUDIO\_FILE\_TYPE = FILE\_TYPE\_MP3;

private static final int LAST\_AUDIO\_FILE\_TYPE = FILE\_TYPE\_OGG;

// MIDI file types

public static final int FILE\_TYPE\_MID = 11;

public static final int FILE\_TYPE\_SMF = 12;

public static final int FILE\_TYPE\_IMY = 13;

private static final int FIRST\_MIDI\_FILE\_TYPE = FILE\_TYPE\_MID;

private static final int LAST\_MIDI\_FILE\_TYPE = FILE\_TYPE\_IMY;

// Video file types

public static final int FILE\_TYPE\_MP4 = 21;

public static final int FILE\_TYPE\_M4V = 22;

public static final int FILE\_TYPE\_3GPP = 23;

public static final int FILE\_TYPE\_3GPP2 = 24;

public static final int FILE\_TYPE\_WMV = 25;

private static final int FIRST\_VIDEO\_FILE\_TYPE = FILE\_TYPE\_MP4;

private static final int LAST\_VIDEO\_FILE\_TYPE = FILE\_TYPE\_WMV;

// Image file types

public static final int FILE\_TYPE\_JPEG = 31;

public static final int FILE\_TYPE\_GIF = 32;

public static final int FILE\_TYPE\_PNG = 33;

public static final int FILE\_TYPE\_BMP = 34;

public static final int FILE\_TYPE\_WBMP = 35;

private static final int FIRST\_IMAGE\_FILE\_TYPE = FILE\_TYPE\_JPEG;

private static final int LAST\_IMAGE\_FILE\_TYPE = FILE\_TYPE\_WBMP;

// Playlist file types

public static final int FILE\_TYPE\_M3U = 41;

public static final int FILE\_TYPE\_PLS = 42;

public static final int FILE\_TYPE\_WPL = 43;

private static final int FIRST\_PLAYLIST\_FILE\_TYPE = FILE\_TYPE\_M3U;

private static final int LAST\_PLAYLIST\_FILE\_TYPE = FILE\_TYPE\_WPL;

//静态内部类

static class MediaFileType \{

int fileType;

String mimeType;

MediaFileType(int fileType, String mimeType) \{

this.fileType = fileType;

this.mimeType = mimeType;

private static HashMap sFileTypeMap

= new HashMap();

private static HashMap sMimeTypeMap

= new HashMap();

static void addFileType(String extension, int fileType, String mimeType) \{

sFileTypeMap.put(extension, new MediaFileType(fileType, mimeType));

sMimeTypeMap.put(mimeType, new Integer(fileType));

static \{

addFileType("MP3", FILE\_TYPE\_MP3, "audio/mpeg");

addFileType("M4A", FILE\_TYPE\_M4A, "audio/mp4");

addFileType("WAV", FILE\_TYPE\_WAV, "audio/x-wav");

addFileType("AMR", FILE\_TYPE\_AMR, "audio/amr");

addFileType("AWB", FILE\_TYPE\_AWB, "audio/amr-wb");

addFileType("WMA", FILE\_TYPE\_WMA, "audio/x-ms-wma");

addFileType("OGG", FILE\_TYPE\_OGG, "application/ogg");

addFileType("MID", FILE\_TYPE\_MID, "audio/midi");

addFileType("XMF", FILE\_TYPE\_MID, "audio/midi");

addFileType("RTTTL", FILE\_TYPE\_MID, "audio/midi");

addFileType("SMF", FILE\_TYPE\_SMF, "audio/sp-midi");

addFileType("IMY", FILE\_TYPE\_IMY, "audio/imelody");

addFileType("MP4", FILE\_TYPE\_MP4, "video/mp4");

addFileType("M4V", FILE\_TYPE\_M4V, "video/mp4");

addFileType("3GP", FILE\_TYPE\_3GPP, "video/3gpp");

addFileType("3GPP", FILE\_TYPE\_3GPP, "video/3gpp");

addFileType("3G2", FILE\_TYPE\_3GPP2, "video/3gpp2");

addFileType("3GPP2", FILE\_TYPE\_3GPP2, "video/3gpp2");

addFileType("WMV", FILE\_TYPE\_WMV, "video/x-ms-wmv");

addFileType("JPG", FILE\_TYPE\_JPEG, "image/jpeg");

addFileType("JPEG", FILE\_TYPE\_JPEG, "image/jpeg");

addFileType("GIF", FILE\_TYPE\_GIF, "image/gif");

addFileType("PNG", FILE\_TYPE\_PNG, "image/png");

addFileType("BMP", FILE\_TYPE\_BMP, "image/x-ms-bmp");

addFileType("WBMP", FILE\_TYPE\_WBMP, "image/vnd.wap.wbmp");

addFileType("M3U", FILE\_TYPE\_M3U, "audio/x-mpegurl");

addFileType("PLS", FILE\_TYPE\_PLS, "audio/x-scpls");

addFileType("WPL", FILE\_TYPE\_WPL, "application/vnd.ms-wpl");

// compute file extensions list for native Media Scanner

StringBuilder builder = new StringBuilder();

Iterator iterator = sFileTypeMap.keySet().iterator();

while (iterator.hasNext()) \{

if (builder.length() > 0) \{

builder.append(',');

builder.append(iterator.next());

sFileExtensions = builder.toString();

public static final String UNKNOWN\_STRING = "";

public static boolean isAudioFileType(int fileType) \{

return ((fileType >= FIRST\_AUDIO\_FILE\_TYPE &&

fileType <= LAST\_AUDIO\_FILE\_TYPE) ||

(fileType >= FIRST\_MIDI\_FILE\_TYPE &&

fileType <= LAST\_MIDI\_FILE\_TYPE));

public static boolean isVideoFileType(int fileType) \{

return (fileType >= FIRST\_VIDEO\_FILE\_TYPE &&

fileType <= LAST\_VIDEO\_FILE\_TYPE);

public static boolean isImageFileType(int fileType) \{

return (fileType >= FIRST\_IMAGE\_FILE\_TYPE &&

fileType <= LAST\_IMAGE\_FILE\_TYPE);

public static boolean isPlayListFileType(int fileType) \{

return (fileType >= FIRST\_PLAYLIST\_FILE\_TYPE &&

fileType <= LAST\_PLAYLIST\_FILE\_TYPE);

public static MediaFileType getFileType(String path) \{

int lastDot = path.lastIndexOf(".");

if (lastDot < 0)

return null;

return sFileTypeMap.get(path.substring(lastDot + 1).toUpperCase());

//根据视频文件路径判断文件类型

public static boolean isVideoFileType(String path) \{ //自己增加

MediaFileType type = getFileType(path);

if(null != type) \{

return isVideoFileType(type.fileType);

return false;

//根据音频文件路径判断文件类型

public static boolean isAudioFileType(String path) \{ //自己增加

MediaFileType type = getFileType(path);

if(null != type) \{

return isAudioFileType(type.fileType);

return false;

//根据mime类型查看文件类型

public static int getFileTypeForMimeType(String mimeType) \{

Integer value = sMimeTypeMap.get(mimeType);

return (value == null ? 0 : value.intValue());

java 判断文件类型是否是音频_Android判断文件类型（视频、音频、图片等） | 学步园...

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