使用ExifInterface获取图片信息

package com.example.readimage;

import java.io.IOException;

import android.media.ExifInterface;
import android.os.Bundle;
import android.os.Environment;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.view.Menu;
import android.view.View;

public class MainActivity extends Activity {

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}

public void read(View view){
try {
String path = Environment.getExternalStorageDirectory().getPath();
System.out.println(path);
ExifInterface exif = new ExifInterface(path+"/aa.jpg");
System.out.println(exif);
//
String width = exif.getAttribute(ExifInterface.TAG_IMAGE_WIDTH);
System.out.println(width);
String time = exif.getAttribute(ExifInterface.TAG_IMAGE_LENGTH);
System.out.println(time);
//拍摄设备
/*String mode = exif.getAttribute(ExifInterface.TAG_MODEL);
System.out.println(mode);*/
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}

}