版权声明:没事随便转 https://blog.csdn.net/qq_41816123/article/details/85067360
1.创建LayoutInflater实例
有两种方式
1.
LayoutInflater layoutInflater= LayoutInflater.from(MainActivity.this);
LayoutInflater layoutInflater= (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
2.在activity_main中创建父布局
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/rl_content"
android:layout_width="match_parent"
android:layout_height="match_parent">
</RelativeLayout>
3.创建button子布局
<?xml version="1.0" encoding="utf-8"?>
<Button xmlns:android="http://schemas.android.com/apk/res/android"
android:text="Button"
android:layout_width="300dp"
android:layout_height="wrap_content">
</Button>
4.给子布局添加到父布局中
package yuexia.com.customview;
import android.content.Context;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.RelativeLayout;
public class MainActivity extends AppCompatActivity {
private RelativeLayout rl_content;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
rl_content = (RelativeLayout) this.findViewById(R.id.rl_content);
LayoutInflater inflater = LayoutInflater.from(MainActivity.this);
LayoutInflater layoutInflater= (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
/*
* 子元素属性的实现的两种方式
* 1.root添加父元素
* 2.给子元素添加布局
* */
View view=layoutInflater.inflate(R.layout.button,rl_content,true);
// rl_content.addView(view);
/*
* 关于inflate的使用
* 1.inflate的方法中root和attachToRoot分别不为空和true的时候就会添加view不需要再addView()
* 2.添加merge时root和attachToRoot分别必须不为空和必须为true,所以也就用不到addView()
* */
}
}
5.具体不太清楚的可以看看这位大佬的
https://blog.csdn.net/vv_bug/article/details/52600758