Get image from Camera And gallery and display in Imageview Android

import android.app.Activity;

import android.content.Intent;

import android.database.Cursor;

import android.graphics.Bitmap;

import android.graphics.BitmapFactory;

import android.net.Uri;

import android.os.Bundle;

import android.provider.MediaStore;

import android.util.Log;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.ImageView;

public class Home extends Activity

{

       Button btnGal;

       ImageView ivGalImg;

       Bitmap bmp;

       final int RQS_GALARRY = 0;

       /** Called when the activity is first created. */

       @Override

       public void onCreate(Bundle savedInstanceState)

       {

              super.onCreate(savedInstanceState);

              setContentView(R.layout.main);

              btnGal         =     (Button)findViewById(R.id.btnGallary);

              ivGalImg     =     (ImageView)findViewById(R.id.ivImage);

              btnGal.setOnClickListener(new OnClickListener()

              {           

                     @Override

                     public void onClick(View arg0)

                     {

                           openGallery();               

                     }

              });

       }

       private void openGallery()

       {

              Intent photoPickerIntent = new Intent(Intent.ACTION_GET_CONTENT);

              photoPickerIntent.setType("image/*");

              startActivityForResult(photoPickerIntent,RQS_GALARRY );

       }

       @Override

       protected void onActivityResult(int requestCode, int resultCode, Intent data)

       {

              super.onActivityResult(requestCode, resultCode, data);

              if (resultCode == RESULT_OK)

              {

                     switch(requestCode)

                     {

                     case RQS_GALARRY:

                           try

                           {

                                  System.gc();

                                  imageUri = data.getData();

                                  String selectedImagePath = getPath(imageUri);

                                  if(bmp != null && !bmp.isRecycled())

                                  {

                                         bmp = null;

                                         ((BitmapDrawable)YD_image.getDrawable()).getBitmap().recycle();

                                  } 

                                  bmp = BitmapFactory.decodeFile(selectedImagePath);

                                  ivGalImg .setBackgroundResource(0);

                                  ivGalImg .setImageBitmap(bmp);

                           }

                           catch (Exception e)

                           {

                                  e.printStackTrace();

                           } 

                           break;

                     }

              }

       }

       public String getPath(Uri uri)

       {

              String[] projection = { MediaStore.Images.Media.DATA };

              Cursor cursor = managedQuery(uri, projection, null, null, null);

              int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);

              cursor.moveToFirst();

              return cursor.getString(column_index);

       }

}

main.xml :

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="fill_parent"

    android:layout_height="fill_parent"

    android:orientation="vertical" >

    <ImageView

        android:id="@+id/ivImage"

        android:layout_width="100dp"

        android:layout_height="100dp"

        android:background="@drawable/icon" >

    </ImageView>

    <Button

        android:id="@+id/btnGallary"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="Click To Open Gallary" >

    </Button>

</LinearLayout>

Manifast: 

<?xml version="1.0" encoding="utf-8"?>

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.pickimagefromgal.activities"

    android:versionCode="1"

    android:versionName="1.0" >

    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" >

    </uses-permission>

    <application

        android:icon="@drawable/icon"

        android:label="@string/app_name" >

        <activity

            android:name=".Home"

            android:label="@string/app_name" >

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

    </application>

</manifest>

More Ref Link:

Link1:

Link 2:
Link 3-Decode Image: