Android-如何将后续视图发送回 [英] Android - How to send subsequent views to back

问题描述

我在LinearLayout中添加一些视图，顶部略有重叠，这是代码:

I'm adding some views to a LinearLayout with a slight overlap in the top, here is the code:

viewHolder.linearLayout.removeAllViews();
for (int i = 0; i < conversation.getPreviousMessages().length; i++) {
    View messageView = layoutInflater.inflate(R.layout.layout_previous_message_row, null);

    LinearLayout.LayoutParams layoutParams = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
    layoutParams.setMargins(0, -5, 0, 0);

    viewHolder.linearLayout.addView(messageView, layoutParams);
}

在此代码中，一些视图以A，B，C的顺序添加到布局中，其中A放在后面，C放在前面.

In this code some views are added to layout in order A, B, C, with A to the back and C to the front.

我想颠倒顺序，将A放在前面，将C放在后面.

I would like to reverse the order, making A to the front and C to the back.

我尝试了此，但没有任何反应.

I have tried this, but nothing happens.

我怎么能做到这一点? 拜托，您能给我带来一些代码吗?

How can I reach this? Please, could you people bring me some code?

谢谢.

推荐答案

在墙上碰了几拳之后，我终于找到了解决方法:

After some punches against the wall, I finally found a solution:

1.-我将布局从LinearLayout更改为RelativeLayout，因为BringChildToFront在LinearLayout中具有怪异的行为.

1.- I changed the layout from being a LinearLayout to being a RelativeLayout because bringChildToFront has a weird behavior among LinearLayout.

2.-在将视图添加到RelativeLayout后，我向后遍历了这些视图，并创建了一个必带子ChildToFront.

2.- After adding the view to the RelativeLayout, I iterated backwards over the views and I made a bringChildToFront.

这是代码:

for (int i = 0; i < conversation.getPreviousMessages().length; i++) {
     View messageView = layoutInflater.inflate(R.layout.layout_previous_message_row, null);
     messageView.setId(99+i);

     viewHolder.relativeLayout.addView(messageView);

     if (i > 0) {
         RelativeLayout.LayoutParams layoutParams = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.WRAP_CONTENT);
         layoutParams.setMargins(0, -5, 0, 0);
         layoutParams.addRule(RelativeLayout.BELOW, 99+i-1);

         messageView.setLayoutParams(layoutParams);
     }
 }

 for (int i = viewHolder.relativeLayout.getChildCount() - 1; i >= 0; i--) {
     viewHolder.relativeLayout.bringChildToFront(viewHolder.relativeLayout.getChildAt(i));
 }

我希望它能帮助某人.

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