main.xml 文件：
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<?xml version="1.0" encoding="utf-8"?>
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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
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android:layout_width="fill_parent"
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android:layout_height="fill_parent"
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android:orientation="horizontal"
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>
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<LinearLayout
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android:layout_width="fill_parent"
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android:layout_height="fill_parent"
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android:orientation="vertical"
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>
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<ListView
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android:id="@+id/listview"
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android:layout_width="fill_parent"
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android:layout_height="wrap_content"
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/>
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<Button
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android:id="@+id/add"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:text="添加"
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/>
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</LinearLayout>
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</LinearLayout> listview_item.xml文件：
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<?xml version="1.0" encoding="utf-8"?>
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<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
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android:layout_width="fill_parent"
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android:layout_height="wrap_content"
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android:orientation="horizontal"
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android:background="#000000"
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android:padding="20dp"
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>
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<EditText
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android:id="@+id/edit"
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android:layout_width="200dp"
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android:layout_height="wrap_content"
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/>
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<Button
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android:id="@+id/del"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:text="删除"
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/>
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</LinearLayout> MainActivity .java
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package com.yyy.testandroid;
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import java.util.ArrayList;
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import android.app.Activity;
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import android.content.Context;
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import android.os.Bundle;
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import android.view.LayoutInflater;
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import android.view.View;
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import android.view.View.OnClickListener;
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import android.view.View.OnFocusChangeListener;
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import android.view.ViewGroup;
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import android.widget.BaseAdapter;
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import android.widget.Button;
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import android.widget.EditText;
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import android.widget.ListView;
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import android.widget.TextView;
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public class TestAndroidActivity extends Activity {
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/** Called when the activity is first created. */
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private Button button,add;
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private TextView text;
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private ListView listview;
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public MyAdapter adapter;
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@Override
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public void onCreate(Bundle savedInstanceState) {
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super.onCreate(savedInstanceState);
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setContentView(R.layout.main);
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listview = (ListView) findViewById(R.id.listview);
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add = (Button) findViewById(R.id.add);
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adapter = new MyAdapter(this);
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listview.setAdapter(adapter);
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add.setOnClickListener(new OnClickListener() {
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@Override
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public void onClick(View arg0) {
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// TODO Auto-generated method stub
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adapter.arr.add("");
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adapter.notifyDataSetChanged();
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}
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});
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}
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private class MyAdapter extends BaseAdapter {
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private Context context;
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private LayoutInflater inflater;
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public ArrayList<String> arr;
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public MyAdapter(Context context) {
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super();
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this.context = context;
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inflater = LayoutInflater.from(context);
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