android - 如何在相对布局容器内的其他两个视图之间添加视图？

Question

我有一个RelativeLayout带有子视图的容器，如下所示：

[ -> begin of relative layout containner
 [view] -> view (LinearLayout)
 [view] -> view (LinearLayout) + rule (below of previous view)
 [view] -> view (LinearLayout) + rule (below of previous view)
] -> end of relative layout

一切都是以编程方式生成的。

事件发生后，我需要在两个子视图之间添加一个子视图。我做这个：

public void add(PerguntaViewContainner parent, PerguntaViewContainner child) {
    PerguntaViewContainner previousChild = parent;
    PerguntaViewContainner nextChild =  HocusPocus.getNextElementOf(parent);

    perguntaParams.addRule(RelativeLayout.BELOW, previousChild.getId());
    perguntaParams.addRule(RelativeLayout.ABOVE, nextChild.getId());

    containner.addView(child, perguntaParams);
}

但是孩子没有出现。你有什么想法，为什么会发生？

Answer 1

看起来您可能还需要更正其他子参数，如下所示：

public void add(PerguntaViewContainner parent, PerguntaViewContainner child) {
    PerguntaViewContainner previousChild = parent;
    PerguntaViewContainner nextChild =  HocusPocus.getNextElementOf(parent);

    perguntaParams.addRule(RelativeLayout.BELOW, previousChild.getId());
    perguntaParams.addRule(RelativeLayout.ABOVE, nextChild.getId());

    containner.addView(child, perguntaParams);

    final RelativeLayout.LayoutParams nextViewParams = (RelativeLayout.LayoutParams)nextChild.getLayoutParams();

    nextViewParams.addRule(RelativeLayout.BELOW, child.getId())
    nextChild.setLayoutParams(nextViewParams);
}

但是，这个问题并不完整，很容易成为您的自定义布局的任何问题。