Question

I’m trying to programmatically add an ImageView then add another one that is relative to this one. My code:

RelativeLayout mLayout = (RelativeLayout) findViewById(R.id.myLayout);
ImageView anchor = new ImageView(getApplicationContext());
anchor.setImageDrawable(getResources().getDrawable(R.drawable.anchor));
anchor.setVisibility(View.VISIBLE);
RelativeLayout.LayoutParams anchorParams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
anchorParams.addRule(RelativeLayout.CENTER_HORIZONTAL);
anchorParams.addRule(RelativeLayout.CENTER_VERTICAL);   
mLayout.addView(anchor,anchorParams);
ImageView spinner = new ImageView(getApplicationContext());
spinner.setImageDrawable(getResources().getDrawable(R.drawable.image1));
spinner.setVisibility(View.VISIBLE);
RelativeLayout.LayoutParams spinnerParams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
spinnerParams.addRule(RelativeLayout.CENTER_HORIZONTAL);
spinnerParams.addRule(RelativeLayout.BELOW,anchor.getId());
mLayout.addView(spinner,spinnerParams);

The first image is just where I want it – centralized – but the second one doesn’t appear below the anchor, instead it appears at the top of the screen, just below the status bar.

Did I miss anything?

Answer 1

i think, you get null for anchor.getId(). Set a Id for your anchor view, before addRule()