如何在相对布局包含器内的其他两个视图之间添加视图？

Question

我有孩子意见RelativeLayout容器，就像这样：被编程产生

[ -> 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。

事件发生后，我需要在两个子视图之间添加一个子项。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

看起来你可能需要更正其他孩子也PARAMS，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); 
} 

然而，问题是不完整的，它可以轻松地与您的自定义布局的任何问题。