java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ImageView.setImageResource(int)' on a null object reference
<p>java.lang.NullPointerException: Attempt to invoke virtual method 'void android.widget.ImageView.setImageResource(int)' on a null object reference</p>

<p>I want to make the icon/image of the first activity transfer or move to the second activity but this error above show up.</p>

<p>This is my source code in the first actvty:</p>

<pre><code> public void next (View view){
    Intent intent = new Intent(this, Products.class);
    intent.putExtra("Button ID", btnId);
    startActivity(intent);
}
</code></pre>

<p>then in the Second actvty</p>

<pre><code> btnId = getIntent().getIntExtra("Button ID", btnId);
    setContentValues();
}

private void setContentValues() {
    ImageView titleImg = (ImageView) findViewById(R.id.imageView_result_title);
    View view = (View)findViewById(R.id.layout_goals_goals);

    switch (btnId) {
        case R.id.imageButton_goals_car:
            titleImg.setImageResource(R.drawable.car);
            break;
        case R.id.imageButton_goals_education:
            titleImg.setImageResource(R.drawable.education);
            break;
        case R.id.imageButton_goals_health:
            titleImg.setImageResource(R.drawable.health);
            break;
        case R.id.imageButton_goals_house:
            titleImg.setImageResource(R.drawable.house);
            break;
        case R.id.imageButton_goals_saving:
            titleImg.setImageResource(R.drawable.savings);
            break;
        case R.id.imageButton_goals_travel:
            titleImg.setImageResource(R.drawable.travel);
            break;
        default:
            break;
    }
}
</code></pre>