Get latitude and longitude of Exif

Last post described how to Convert GPS tag of ExifInterface to degree, its another easy way to get latitude and longitude of Exif - getLatLong(float[] output) start from API level 5.

It stores the latitude and longitude value in a float array. The first element is the latitude, and the second element is the longitude. Returns false if the Exif tags are not available.

Example:

package com.AndroidExif;

import java.io.IOException;

import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.media.ExifInterface;
import android.os.Bundle;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

public class AndroidExifActivity extends Activity {
 
 String imagefile ="/sdcard/DCIM/DSC_9599.jpg";
 ImageView image;
 TextView Exif;
 
   /** Called when the activity is first created. */
   @Override
   public void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.main);
       image = (ImageView)findViewById(R.id.image);
       Exif = (TextView)findViewById(R.id.exif);
       ImageView image = (ImageView)findViewById(R.id.image);
      
       Bitmap bm = BitmapFactory.decodeFile(imagefile);
       image.setImageBitmap(bm);
      
       Exif.setText(ReadExif(imagefile));
   }
  
   String ReadExif(String file){
    String exif="Exif: " + file;
    try {
   ExifInterface exifInterface = new ExifInterface(file);

   exif += "\nIMAGE_LENGTH: " + exifInterface.getAttribute(ExifInterface.TAG_IMAGE_LENGTH);
   exif += "\nIMAGE_WIDTH: " + exifInterface.getAttribute(ExifInterface.TAG_IMAGE_WIDTH);
   exif += "\n DATETIME: " + exifInterface.getAttribute(ExifInterface.TAG_DATETIME);
   exif += "\n TAG_MAKE: " + exifInterface.getAttribute(ExifInterface.TAG_MAKE);
   exif += "\n TAG_MODEL: " + exifInterface.getAttribute(ExifInterface.TAG_MODEL);
   exif += "\n TAG_ORIENTATION: " + exifInterface.getAttribute(ExifInterface.TAG_ORIENTATION);
   exif += "\n TAG_WHITE_BALANCE: " + exifInterface.getAttribute(ExifInterface.TAG_WHITE_BALANCE);
   exif += "\n TAG_FOCAL_LENGTH: " + exifInterface.getAttribute(ExifInterface.TAG_FOCAL_LENGTH);
   exif += "\n TAG_FLASH: " + exifInterface.getAttribute(ExifInterface.TAG_FLASH);
   exif += "\nGPS related:";

   float[] LatLong = new float[2];
   if(exifInterface.getLatLong(LatLong)){
    exif += "\n latitude= " + LatLong[0];
    exif += "\n longitude= " + LatLong[1];
   }else{
    exif += "Exif tags are not available!";
   }
   
   Toast.makeText(AndroidExifActivity.this,
     "finished",
     Toast.LENGTH_LONG).show();
   
  } catch (IOException e) {
   // TODO Auto-generated catch block
   e.printStackTrace();
   Toast.makeText(AndroidExifActivity.this,
     e.toString(),
     Toast.LENGTH_LONG).show();
  }
    
    return exif;
   }

}

next post:
- Set latitude and longitude in Exif, setAttribute() and saveAttributes().

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