android获取文件getMimeType的两种方法

方法1：

import java.util.Locale;private static String getSuffix(File file) {if (file == null || !file.exists() || file.isDirectory()) {return null;}String fileName = file.getName();if (fileName.equals("") || fileName.endsWith(".")) {return null;}int index = fileName.lastIndexOf(".");if (index != -1) {return fileName.substring(index + 1).toLowerCase(Locale.US);} else {return null;}}public static String getMimeType(File file){String suffix = getSuffix(file);if (suffix == null) {return "file/*";}String type = MimeTypeMap.getSingleton().getMimeTypeFromExtension(suffix);if (type != null || !type.isEmpty()) {return type;}return "file/*";}方法2:

public static String getMimeType(String filePath) {MediaMetadataRetriever mmr = new MediaMetadataRetriever();String mime = "text/plain";if (filePath != null) {try {mmr.setDataSource(filePath);mime = mmr.extractMetadata(MediaMetadataRetriever.METADATA_KEY_MIMETYPE);} catch (IllegalStateException e) {return mime;} catch (IllegalArgumentException e) {return mime;} catch (RuntimeException e) {return mime;}}return mime;}

，别想一下造出大海，必须先由小河川开始。