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Android save layout state
android:configChanges="keyboardHidden|orientation"

Button imageloader = (Button) findViewById(R.id.imageloader);
ImageView iv = (ImageView) findViewById(R.id.iv);
imageloader.setOnClickListener (new View.OnClickListener() {
    public void onClick(View v) {
    iv.setVisibility(View.VISIBLE);
    }
});

ImageView iv;
...

@Override
protected void onRestoreInstanceState(Bundle savedInstanceState) {
    iv.setVisibility(savedInstanceState.getInt("Image Visibility", View.GONE));
    super.onRestoreInstanceState(savedInstanceState);
}

@Override
protected void onSaveInstanceState(Bundle outState) {
    outState.putInt("Image Visibility", iv.getVisibility());
    super.onSaveInstanceState(outState);
}