Set Image Through Button

You can add images in your project through simple copy your image and then past in

res/drawable.

Now your activity_main.xml like this;

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

    xmlns:tools="http://schemas.android.com/tools"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical"

    tools:context=".MainActivity" >

    <LinearLayout

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_gravity="center_horizontal"

        android:orientation="horizontal" >

        <ImageView

            android:id="@+id/img"

            android:layout_width="200dp"

            android:layout_height="200dp"

            android:src="@drawable/ic_launcher" />

    </LinearLayout>

    <LinearLayout

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_gravity="center_horizontal"

        android:orientation="horizontal" >

        <Button

            android:id="@+id/btn"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="Change" />

    </LinearLayout>

</LinearLayout>

Your MainActivity.java like this:

package com.example.imageview;

import android.os.Bundle;

import android.app.Activity;

import android.view.Menu;

import android.view.View;

import android.view.View.OnClickListener;

import android.widget.Button;

import android.widget.ImageView;

public class MainActivity extends Activity {

Button btn_change;

ImageView image;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        image=(ImageView)findViewById(R.id.img);

        btn_change=(Button)findViewById(R.id.btn);

        btn_change.setOnClickListener(new OnClickListener() {

        public void onClick(View v) {

// TODO Auto-generated method stub

image.setImageResource(R.drawable.cloudy);

}

});

        

    }

    @Override

    public boolean onCreateOptionsMenu(Menu menu) {

        // Inflate the menu; this adds items to the action bar if it is present.

        getMenuInflater().inflate(R.menu.activity_main, menu);

        return true;

    }

    

}

App like this: