也请尝试nextFocusDown.我不完全了解规则，但似乎行为取决于EditTexts的布局以及光标位置相对于下一个字段的位置.

Try nextFocusDown as well. I don't fully understand the rules, but it seems that the behavior depends on the layout of the EditTexts, and where the cursor position is relative to the next field.