Android中读取图片EXIF元数据之metadata-extractor的使用

import com.drew.imaging.jpeg.JpegMetadataReader;

import com.drew.metadata.Directory;

import com.drew.metadata.Metadata;

import com.drew.metadata.Tag;

import com.drew.metadata.exif.ExifDirectory;

/**

• 读取图片的EXIF信息

*/

public class ExifTest {

public static void main(String[] args) throws Exception {

//包含EXIF信息的图片地址

File jpegFile = new File(“D:\XXXX\XXXX\XXXX.JPG”);

Metadata metadata = JpegMetadataReader.readMetadata(jpegFile);

Directory exif = metadata.getDirectory(ExifDirectory.class);

Iterator tags = exif.getTagIterator();

while (tags.hasNext()) {

Tag tag = (Tag)tags.next();

System.out.println(tag);

}

}

}

示例2：）

public static void main(String[] args) throws Exception {

File mFile = new File(“F:/XXX.JPG”);

Metadata metadata = ImageMetadataReader.readMetadata(mFile);

for (Directory directory : metadata.getDirectories()) {

if(“ExifSubIFDDirectory”.equalsIgnoreCase( directory.getClass().getSimpleName() )){

//光圈F值=镜头的焦距/镜头光圈的直径

System.out.println(“光圈值: f/” + directory.getString(ExifSubIFDDirectory.TAG_FNUMBER) );

System.out.println("曝光时间: " + directory.getString(ExifSubIFDDirectory.TAG_EXPOSURE_TIME)+ “秒” );

System.out.println("ISO速度: " + directory.getString(ExifSubIFDDirectory.TAG_ISO_EQUIVALENT) );

System.out.println("焦距: " + directory.getString(ExifSubIFDDirectory.TAG_FOCAL_LENGTH) + “毫米” );