android应用开发详解（一）--------原始xml文件的使用

最新推荐文章于 2022-07-28 13:27:02 发布

hulan_baby

最新推荐文章于 2022-07-28 13:27:02 发布

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分类专栏： android应用开发详解

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1、工程目录

2、TestXMLActivity.java

import java.io.IOException;

import org.xmlpull.v1.XmlPullParser;
import org.xmlpull.v1.XmlPullParserException;

import android.os.Bundle;
import android.app.Activity;
import android.content.res.Resources;
import android.content.res.XmlResourceParser;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import com.example.test_resource.R;

public class TestXMLActivity extends Activity {
	private TextView myTextView;
	private Button myButton;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.test_xml);
		myButton = (Button) findViewById(R.id.xmlTestButton01);
		myTextView = (TextView) findViewById(R.id.xmlContextTextView01);
		myButton.setOnClickListener(new OnClickListener() {

			@Override
			public void onClick(View arg0) {
				// TODO Auto-generated method stub
				int counter = 0;
				StringBuilder sb = new StringBuilder("");
				Resources r = getResources();
				XmlResourceParser xrp = r.getXml(R.xml.test);
				try {
					while (xrp.getEventType() != XmlResourceParser.END_DOCUMENT) {
						if (xrp.getEventType() == XmlResourceParser.START_TAG) {
							String name = xrp.getName();
							if (name.equals("customer")) {
								counter++;
								sb.append("第" + counter + "条客户信息： " + "\n");
								sb.append(xrp.getAttributeValue(0) + "\n");
								sb.append(xrp.getAttributeValue(1) + "\n");
								sb.append(xrp.getAttributeValue(2) + "\n");
								sb.append(xrp.getAttributeValue(3) + "\n\n");

							}

						} else if (xrp.getEventType() == XmlPullParser.END_TAG) {
						} else if (xrp.getEventType() == XmlPullParser.TEXT) {
						}
						xrp.next();
					}
					myTextView.setText(sb.toString());
				} catch (XmlPullParserException e) {
					e.printStackTrace();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
		});
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

}

3、布局文件test_xml.xml

<pre name="code" class="html"><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <Button
        android:id="@+id/xmlTestButton01"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="获得XML内容" />

    <TextView
        android:id="@+id/xmlContextTextView01"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="" />

</LinearLayout>

4、/res/xml/test.xml

<pre name="code" class="html"><?xml version="1.0" encoding="utf-8"?>
<resources>
    
    <customer name="tom" age="20" email="tom@yahoo.com" gender="male" />
    <customer name="kite" age="21" email="kite@yahoo.com" gender="male" />

</resources>

遇到的问题：test.xml总是出现错误，必须把它放在/res/xml文件夹下才能运行成功！