我如何获得一个TextView的`layout_weight`？ [英] How do I get the `layout_weight` of a TextView?

问题描述

我有一个 TableLayout 和行与一对夫妇 TextViews 。我想找到 layout_weight 的的TextView 但我找不出如何。我已经试过如下：

I have a TableLayout and a row with a couple TextViews. I want to find the layout_weight of the TextView but I cant figure out how. I've tried the following:

TableRow.LayoutParams lp = tv1.getLayoutParams();

和

ViewGroup.LayoutParams lp = tv1.getLayoutParams();

在第一种情况下，我得到一个类型不匹配：不能从ViewGroup.LayoutParams到TableRow.LayoutParams转换，不过和第二种情况下工作正常， ViewGroup.LayoutParams 没有一个重量字段。

In the first case I get a type mismatch: "Cannot convert from ViewGroup.LayoutParams to TableRow.LayoutParams", and the second case works fine, however ViewGroup.LayoutParams doesn't have a weight field.

所有不同类型混淆的的LayoutParams ，我无法知道它使用的地方。

All the different types of LayoutParams are confusing, I'm never sure which to use where.

推荐答案

您几乎你的第一次尝试了它。你只需要转换为正确的类型：

You almost had it with your first try. You just need to cast to the correct type:

TableRow.LayoutParams lp = (TableRow.LayoutParams) tv1.getLayoutParams();

的任何子类 LinearLayout.LayoutParams （包括 TableRow.LayoutParams ）将有一个体重字段。

Any subclass of LinearLayout.LayoutParams (including TableRow.LayoutParams) will have a weight field.

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