为什么listView不能自己添加Header?
我已将params添加到标题中而不是WRAP_CONTENT,MATCH_PARETN。
MainActivity:
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ListView list = (ListView) findViewById(R.id.lv);
LinearLayout head = (LinearLayout) getLayoutInflater().inflate(R.layout.layout, null);
AbsListView.LayoutParams params = new AbsListView.LayoutParams(
200,200
);
head.setLayoutParams(params);
list.addHeaderView(head);
}
}
activity_main.xml中:
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity">
<ListView
android:id="@+id/lv"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</RelativeLayout>
layout.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="@+id/iv"
android:layout_width="200dp"
android:layout_height="200dp"
android:src="@mipmap/ic_launcher" />
</LinearLayout>
我该怎么办?
答案 0 :(得分:0)
尝试从RelativeLayout类而不是AbsListView中输入LayoutParams。我认为这可能是班级演员的问题。