Click on Button to Change the Image in ImageView in Android

First of all create New Project and give the Name And MainACtivity name all that.

 

Now open the MainActivity.

 

MainActivity 

public class MainActivity extends AppCompatActivity {
    ImageView img;
    Button b;
    int flag = 0;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        img = (ImageView) findViewById(R.id.imageView1);
        b = (Button) findViewById(R.id.button1);

        b.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub

                if (flag == 0) {
                    img.setImageResource(R.drawable.home1);
                    flag = 1;
                } else if (flag == 1) {
                    img.setImageResource(R.drawable.home2);
                    flag = 2;
                } else if (flag == 2) {
                    img.setImageResource(R.drawable.home3);
                    flag = 0;
                }
            }
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();

        //noinspection SimplifiableIfStatement
        if (id == R.id.action_settings) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }
}

Now Open Your activity_main.xml file.

 

activity_main.xml 

<RelativeLayout 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" >

    <TextView
        android:id="@+id/textView1"
        android:textSize="20dp"
        android:textColor="#FF0000"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="110dp"
        android:text="Static ImageView" />

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="60dp"
        android:layout_height="60dp"
        android:layout_centerVertical="true"
        android:layout_centerHorizontal="true"
        android:src="@drawable/home1" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:layout_marginBottom="80dp"
        android:text="Change" />

</RelativeLayout>

In your Drawable Folder add below name Image. The Image are contain in Rar file.

 

home1.jpg

home2.jpg

home3.jpg

 

Or you can use your image by giving this Name to Image.

 

Now Run the Application the following Output is Generated.

 

 

 

Click on Button the following output is generated

 

 

 

And then,

 

 

 

The Image is in the Drawable file