Android tips

TextViewにマージンを設定

TextView textView = (TextView)convertView.findViewById(R.id.title);
RelativeLayout.LayoutParams params = (RelativeLayout.LayoutParams) textView.getLayoutParams(); // (※)
params.setMargins(34, 0, 0, 0);
textView.setLayoutParams(params);

※　ViewGroupがRelativeLayoutの時

ListViewのセパレーターの設定

_listView.setDivider(new ColorDrawable(android.R.color.black));
_listView.setDividerHeight(1);