我正在尝试以编程方式(而不是通过 XML 以声明方式)实现以下目标:
<RelativeLayout...>
<TextView ...
android:id="@+id/label1" />
<TextView ...
android:id="@+id/label2"
android:layout_below: "@id/label1" />
</RelativeLayout>
换句话说,如何让第二个 TextView
出现在第一个下方,但我想用代码实现:
RelativeLayout layout = new RelativeLayout(this);
TextView label1 = new TextView(this);
TextView label2 = new TextView(this);
...
layout.addView(label1);
layout.addView(label2);
setContentView(layout);
更新:
谢谢,TreeUK。我了解大体方向,但它仍然不起作用 - “B”与“A”重叠。我做错了什么?
RelativeLayout layout = new RelativeLayout(this);
TextView tv1 = new TextView(this);
tv1.setText("A");
TextView tv2 = new TextView(this);
tv2.setText("B");
RelativeLayout.LayoutParams lp = new RelativeLayout.LayoutParams(
RelativeLayout.LayoutParams.WRAP_CONTENT, RelativeLayout.LayoutParams.FILL_PARENT);
lp.addRule(RelativeLayout.RIGHT_OF, tv1.getId());
layout.addView(tv1);
layout.addView(tv2, lp);
最佳答案
根据我能够拼凑的内容,您必须使用 LayoutParams 添加 View 。
LinearLayout linearLayout = new LinearLayout(this);
RelativeLayout.LayoutParams relativeParams = new RelativeLayout.LayoutParams(
LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
relativeParams.addRule(RelativeLayout.ALIGN_PARENT_TOP);
parentView.addView(linearLayout, relativeParams);
所有功劳都归功于 sechastain,要以编程方式相对定位您的项目,您必须为它们分配 ID。
TextView tv1 = new TextView(this);
tv1.setId(1);
TextView tv2 = new TextView(this);
tv2.setId(2);
然后 addRule(RelativeLayout.RIGHT_OF, tv1.getId());
关于android - 如何以编程方式在 RelativeLayout 中布置 View ?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/3433792/