Java 将布局对象添加到视图时设置布局对象的重力

我正在尝试为充气器_layout.xml充气，并将其添加到activity_main.xml中。 有人能告诉我，在我将充气机_layout.xml的视图对象添加到activity_main.xml时，如何为其分配重力吗

充气机布局.xml

<?xml version="1.0" encoding="utf-8"?>
<TextView xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Hello I'm inflated"
android:textSize="40sp"
android:id="@+id/toBeInflated"
/>

activity_main.xml（包含列表视图）

MainActivity.java

public class MainActivity extends ListActivity implements AdapterView.OnItemClickListener {
ListView l;
String[] days = {"Sunday", "Monday", "Tuesday", "Thursday", "Friday", "Saturday", "Sunday"};
LayoutInflater inflater;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    l = getListView();
    ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, R.layout.list_view_element, days);
    l.setAdapter(adapter);
    inflater = getLayoutInflater();
    l.setOnItemClickListener(this);
    RelativeLayout r = (RelativeLayout) findViewById(R.id.relative);
    View inf = inflater.inflate(R.layout.inflater_layout,r);
}

@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

}
}

公共类MainActivity扩展ListActivity实现AdapterView.OnItemClickListener{
列表视图l；
字符串[]天={“星期日”、“星期一”、“星期二”、“星期四”、“星期五”、“星期六”、“星期日”}；
充气机；
@凌驾
创建时受保护的void（Bundle savedInstanceState）{
super.onCreate（savedInstanceState）；
setContentView（R.layout.activity_main）；
l=getListView（）；
ArrayAdapter=新的ArrayAdapter（这个，R.layout.list\u view\u元素，天）；
l、 设置适配器（适配器）；
充气机=充气机（）；
l、 SetonicClickListener（本）；
RelativeLayout r=（RelativeLayout）findViewById（r.id.relative）；
视图inf=充气机。充气（右布局。充气机布局，右）；
}
@凌驾
public void onItemClick（AdapterView父对象、视图、整型位置、长id）{
}
}

这就是结果：

---

可以通过将

LayoutParams

添加到膨胀的

视图中来实现：

//small change, attachToRoot = false:
View inf = inflater.inflate(R.layout.inflater_layout,r, false);
//LayoutParams always refer to the parent of the actual view:
RelativeLayout.LayoutParams lp  = new    RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
//example Rule: 
lp.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, RelativeLayout.TRUE);
inf.setLayoutParams(lp);
r.addView(inf) //because we haven't added it yet.

还可以查找
attachToRoot=false
的解释
 将
TextView
在
activity\u main.xml
的
RelativeLayout
中设置为不可见/消失（不占用空间），并在需要时使其可见，这是一种解决方案吗？否则，您需要在java代码的TextView中添加一些LayoutParams。您能详细介绍一下如何添加LayoutParams吗？谢谢
//small change, attachToRoot = false:
View inf = inflater.inflate(R.layout.inflater_layout,r, false);
//LayoutParams always refer to the parent of the actual view:
RelativeLayout.LayoutParams lp  = new    RelativeLayout.LayoutParams(ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
//example Rule: 
lp.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM, RelativeLayout.TRUE);
inf.setLayoutParams(lp);
r.addView(inf) //because we haven't added it yet.