Android：从代码向特定布局添加视图
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Android: Add a view to a specific Layout from code
提问by Erik
I want to dynamically add some views to a LinearLayoutthat is already defined in XML.
我想向LinearLayout已经在 XML 中定义的a 动态添加一些视图。
I'm able to add views to the screen but they are not being placed 'inside' the right LinearLayout.
我可以向屏幕添加视图，但它们没有被放置在 right 的“内部” LinearLayout。
How can I get a reference to this specific Layout from code, similar to getting a Viewby using findViewById()?
如何从代码中获取对这个特定布局的引用，类似于View通过使用获取 a findViewById()？
回答by Janusz
As Marcarse pointed out you can do
正如马尔卡斯指出的那样，你可以做到
ViewGroup layout = (ViewGroup) findViewById(R.id.your_layout_id);
TextView tv = new TextView(this);
tv.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
tv.setText("Added tv");
layout.addView(tv);
The LinearLayout class extends ViewGroupwhich itself extends the View class. This makes acquiring a reference to a layout as easy as getting a reference to another View.
LinearLayout 类扩展了ViewGroup，它本身扩展了 View 类。这使得获取对布局的引用就像获取对另一个视图的引用一样容易。
回答by Macarse
This should work:
这应该有效：
LinearLayout layout = (LinearLayout) findViewById(R.id.your_layout_id);
TextView tv = new TextView(this);
tv.setLayoutParams(new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
tv.setText("Added tv");
layout.addView(tv);
回答by sumit mehra
Better Version: To add another layout in activity/Fragment
更好的版本：在活动/片段中添加另一个布局
LayoutInflater mInflater = LayoutInflater.from(getActivity());
View mProgressBarFooter = mInflater.inflate(R.layout.spinner, null, false);
textLoader = (TextView) mProgressBarFooter.findViewById(R.id.footer_label);
Happy Coding(-:
快乐编码(-:
