我刚到公司的时候看程序代码，怎么都找不到对应的布局文件，后来才发现他们是从assets中读取一篇xml文件动态的创建界面，可能我是个初学者的原因还什么都没怎么见过，对此感到特别的好奇所以研究了一下。
1首先准备了一篇xml文件放到了assets目录下，
<?xml version="1.0" encoding="UTF-8"?>
<root>
<assess_item title="评分项目" hide="true">
<spinner title="姓名：" >[],张三,李四</spinner>
<spinner >[],吃,喝,玩,乐</spinner>
<input title="犯罪前科:" >无</input>
<input title="既往史:" >无</input>
<input title="身高:" >未测,卧床</input>
<input title="体重:" >未测,卧床</input>
<spinner title="文化程度：" >小学,初中,高中,大专,本科以上</spinner>
<input title="饮酒:" />
<input title="脉搏:" />
<input title="呼吸:" />
<input title="收缩压:"/>
<input title="舒张压:" />
<spinner title="意识:" >清楚,模糊,谵妄,嗜睡,昏迷</spinner>
<spinner title="表情:" >正常,急性病容,慢性病容</spinner>
<spinner title="言语:" >正常,含糊不清,失语</spinner>
<input title="皮肤破损:" />
<spinner title="营养状况:" >好,中,差</spinner>
<spinner title="四肢:" >活动自如,功能障碍</spinner>
<input title="四肢异常:" />
<spinner title="感官功能:" >正常,异常</spinner>
<input title="感官异常:" />
<input title="排便异常:" />
<spinner title="静脉输液:" >无,有,表浅静脉,套管针,PICC管,大静脉置管</spinner>
<input title="输液部位:" />
<input title="其他"/>
</assess_item>
<!-- <no_danger/> -->
<!-- <export/> -->
</root>
最后加载完成的界面的效果。
添加布局文件主要的布局文件 activity_main.xml
<ScrollView 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" >
<LinearLayout android:id="@+id/ll_2" android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical" >
</LinearLayout>
</ScrollView>
上述代码就比较简单就是一个scrollView里边嵌套一个线性布局。
以下两个item，item.xml和item2.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="40dp" android:orientation="horizontal" >
<TextView android:id="@+id/tv_item_1" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="2" android:gravity="center" android:text="身高：" />
<Spinner android:id="@+id/sp_item_1" android:layout_width="0dp" android:layout_height="match_parent" android:layout_weight="5" />
</LinearLayout>
<?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" android:orientation="horizontal" >
<TextView android:id="@+id/tv_item2_1" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="2" android:gravity="center" android:text="TextView:" />
<EditText android:id="@+id/et_item2_1" android:layout_width="0dp" android:layout_height="wrap_content" android:layout_weight="5" android:ems="10" >
<requestFocus />
</EditText>
</LinearLayout>
AssetManager assetManager = this.getAssets();
parser = Xml.newPullParser();
InputStream is = assetManager.open("NurseAssess_InHospital.xml",AssetManager.ACCESS_STREAMING);//按顺序读取
这里用到了一个assetManger用这个类的open方法得到这篇xml文件的输入流。
给解析器设置输入流:
parser.setInput(is,"utf-8");
int type;
while ((type = parser.next()) != XmlPullParser.END_DOCUMENT) {
if (type == XmlPullParser.START_TAG) {
}
}
开始读取，
if (name.equals("spinner")) {
String tag = parser.getAttributeValue(null,"title");
Log.i("TAG","tag=" + tag);
inflater = getLayoutInflater();
view = inflater.inflate(R.layout.item,null);
textView = (TextView) view.findViewById(R.id.tv_item_1);
textView.setText(tag);
spinner = (Spinner) view.findViewById(R.id.sp_item_1);
String string = parser.nextText();
String[] strings = string.split(",");
// Log.i("TAG","string="+string);
list = new ArrayList<String>();
for (String string2 : strings) {
Log.i("TAG","string2" + string2);
list.add(string2);
}
Log.i("TAG","strings=" + strings);
adapter = new ArrayAdapter<String>(this,android.R.layout.simple_spinner_dropdown_item,list);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_item);
spinner.setAdapter(adapter);
ll_2.addView(view);
if (name.equals("input")) {
inflater = getLayoutInflater();
String string = parser.getAttributeValue(null,"title");
Log.i("TAG","string=" + string);
View view = inflater.inflate(R.layout.item2,null);
et = (EditText) view.findViewById(R.id.et_item2_1);
textView2 = (TextView) view
.findViewById(R.id.tv_item2_1);
textView2.setText(string);
ll_2.clearFocus();
ll_2.setFocusable(true);
ll_2.setFocusableInTouchMode(true);
ll_2.addView(view);
}
以下是完整的MianActivity的代码：
package com.example.day1403;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;
import android.app.Activity;
import android.content.res.AssetManager;
import android.os.Bundle;
import android.util.Log;
import android.util.Xml;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.LinearLayout;
import android.widget.Spinner;
import android.widget.TextView;
public class MainActivity extends Activity {
private Spinner spinner;
private XmlPullParser parser;
private LayoutInflater inflater;
private ArrayAdapter<String> adapter;
private List<String> list;
private EditText et;
private LinearLayout ll_2;
private TextView textView;
private TextView textView2;
private View view;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ll_2 = (LinearLayout) findViewById(R.id.ll_2);
getView();
}
private void getView() {
try {
AssetManager assetManager = this.getAssets();
parser = Xml.newPullParser();
Log.i("TAG","执行了");
InputStream is = assetManager.open("NurseAssess_InHospital.xml",AssetManager.ACCESS_STREAMING);
parser.setInput(is,"utf-8");
int type;
while ((type = parser.next()) != XmlPullParser.END_DOCUMENT) {
String name = parser.getName();
Log.i("TAG","name=" + name);
if (type == XmlPullParser.START_TAG) {
if (name.equals("spinner")) {
String tag = parser.getAttributeValue(null,list);
adapter.setDropDownViewResource(android.R.layout.simple_spinner_item);
spinner.setAdapter(adapter);
ll_2.addView(view);
}
if (name.equals("input")) {
inflater = getLayoutInflater();
String string = parser.getAttributeValue(null,null);
et = (EditText) view.findViewById(R.id.et_item2_1);
textView2 = (TextView) view
.findViewById(R.id.tv_item2_1);
textView2.setText(string);
ll_2.clearFocus();
ll_2.setFocusable(true);
ll_2.setFocusableInTouchMode(true);
ll_2.addView(view);
}
}
}
is.close;
} catch (FileNotFoundException e) {
Log.i("TAG","文件没找到");
e.printStackTrace();
} catch (XmlPullParserException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
}
