与参数编程方式添加按钮？ [英] Add Button programmatically with parameters?

问题描述

基本上，我有这样的布局结构：＆LT;＆RelativeLayout的GT; ＆LT;＆RelativeLayout的GT; ＆LT;的TextView /＆GT; ＆LT; / RelativeLayout的＆GT; ＆LT;＆滚动型GT; ＆LT;＆RelativeLayout的GT; ...＆LT; / RelativeLayout的＆GT; ＆LT; /滚动型＆GT; ＆LT; / RelativeLayout的＆GT; ，我想以编程方式添加一个按钮。该按钮应该是＆LT内部; RelativeLayout的＆GT; ，这是＆LT内部，滚动型＆GT; 。另外，我需要它来对准底部和CENTER_VERTICAL。
我真的AP preciate任何提示/例;）谢谢！
附：虽然有计算器上很多类似的问题，没有一个答案帮我...

Basically, I have this layout structure: <RelativeLayout> <RelativeLayout> <TextView /> </RelativeLayout> <ScrollView> <RelativeLayout> ... </RelativeLayout> </ScrollView> </RelativeLayout> and I want to add a button programmatically. This button should be inside the <RelativeLayout>, which is inside the <ScrollView>. Also, I need it to be align to the bottom and CENTER_VERTICAL. I would really appreciate any hints/examples ;) Thanks! P.S. Although, there are many similar questions on stackoverflow, none of the answers helped me...

推荐答案

首先，你需要给在XML中相对布局的ID：机器人：ID =@ + ID / myLayout。
然后，在Java中code：

First you need to give your relative Layout in XML an ID: android:id="@+id/myLayout". Then in Java code:

Button b = new Button(this);
RelativeLayout.LayoutParams rl = new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
rl.addRule(RelativeLayout.ALIGN_BOTTOM);
b.setLayoutParams(rl);
((RelativeLayout) findViewById(R.id.myLayout)).addView(b);

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