activity_main.xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:id="@+id/LinearLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity" >
    <ImageView
        android:id="@+id/imgView"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1" >
    </ImageView>
    <Button
        android:id="@+id/buttonLoadPicture"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="center"
        android:layout_weight="0"
        android:text="Load Picture" >
    </Button>
</LinearLayout>
MainActivity.java:
package com.ram.browseimage;
import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.view.View;
import android.widget.Button;
import android.widget.ImageView;
public class MainActivity extends Activity {
  private static int RESULT_LOAD_IMAGE = 1;
     @Override
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_main);
         Button buttonLoadImage = (Button) findViewById(R.id.buttonLoadPicture);
         buttonLoadImage.setOnClickListener(new View.OnClickListener() {
             @Override
             public void onClick(View arg0) {
                 Intent i = new Intent(
                         Intent.ACTION_PICK,
                         android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
                 startActivityForResult(i, RESULT_LOAD_IMAGE);
             }
         });
     }
     @Override
     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
         super.onActivityResult(requestCode, resultCode, data);
         if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {
             Uri selectedImage = data.getData();
             String[] filePathColumn = { MediaStore.Images.Media.DATA };
             Cursor cursor = getContentResolver().query(selectedImage,
                     filePathColumn, null, null, null);
             cursor.moveToFirst();
             int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
             String picturePath = cursor.getString(columnIndex);
             cursor.close();
             ImageView imageView = (ImageView) findViewById(R.id.imgView);
             imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));
         }
     }
 }
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