Android：ListView自动生成列表条目

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout
 3     xmlns:android="http://schemas.android.com/apk/res/android"
 4     android:orientation="vertical"
 5     android:layout_width="fill_parent"
 6     android:layout_height="fill_parent">
 7 
 8     <ListView
 9         android:id="@+id/listview"
10         android:layout_width="match_parent"
11         android:layout_height="match_parent">
12     </ListView>
13 
14 </LinearLayout>

 1 package com.example.sample_6_4;
 2 
 3 import android.app.Dialog;
 4 import android.graphics.Color;
 5 import android.preference.DialogPreference;
 6 import android.support.v7.app.AlertDialog;
 7 import android.support.v7.app.AppCompatActivity;
 8 import android.os.Bundle;
 9 import android.view.View;
10 import android.view.ViewGroup;
11 import android.view.WindowManager;
12 import android.widget.ArrayAdapter;
13 import android.widget.BaseAdapter;
14 import android.widget.Button;
15 import android.widget.ListView;
16 import android.widget.TextView;
17 
18 public class ListActivity extends AppCompatActivity {
19     @Override
20     protected void onCreate(Bundle savedInstanceState) {
21         super.onCreate(savedInstanceState);
22         setContentView(R.layout.activity_list);
23         ListView lv = (ListView)findViewById(R.id.listview);
24         //做一个适配器来使用ListView
25         lv.setAdapter(new MyAdapter());
26     }
27     class MyAdapter extends BaseAdapter{
28         @Override
29         //返回条目的个数，列表的条目，例如一个屏幕显示多少条
30         public int getCount(){
31             return 20;
32         }
33         @Override
34         //确定每个条目的布局和内容，position代表条目的位置，从0开始
35         public View getView(int position, View converView, ViewGroup parent){
36             TextView tv = new TextView(ListActivity.this);
37             tv.setText("条目" + position);
38             tv.setTextSize(23);
39             tv.setTextColor(Color.BLUE);
40             return tv;
41         }
42         @Override
43         public Object getItem(int position){
44             return null;
45         }
46         @Override
47         public long getItemId(int position){
48             return 0;
49         }
50     }
51 }