一、布局文件part.xml：
代码如下:
二、通过后台代码生成前台布局：
代码如下:
package com.example.codeui;
import android.os.Bundle;
import android.app.Activity;
import android.content.Context;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.widget.LinearLayout;
import android.widget.TextView;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
LinearLayout layout=new LinearLayout(this);
layout.setOrientation(LinearLayout.VERTICAL);//显示方向
//将view对象添加到布局界面
TextView textView =new TextView(this);
textView.setText("Hello Code UI");
ViewGroup.LayoutParams params = new ViewGroup.LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT,ViewGroup.LayoutParams.WRAP_CONTENT);
//添加
layout.addView(textView,params);
//添加外部xml定义的布局
View view = getPartView();
layout.addView(view);
ViewGroup.LayoutParams layoutParams = new ViewGroup.LayoutParams(
ViewGroup.LayoutParams.FILL_PARENT,ViewGroup.LayoutParams.FILL_PARENT);
setContentView(layout, layoutParams);
//setContentView(R.layout.activity_main);
//采用代码编写效率高，但是很难维护
}
//通过加载xml文件将view添加到布局中
public View getPartView() {
//将xml布局文件生成view对象通过LayoutInflater
LayoutInflater inflater =(LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
//将view对象挂载到那个父元素上，这里没有就为null
return inflater.inflate(R.layout.part, null);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
}