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();
       }
   }
    
}

注意：有些数据是获取不到的，并且容易报错