Android学习笔记--ListView的三种使用方式

来源：互联网发布：剑倚天下坐骑进阶数据编辑：程序博客网时间：2024/06/06 04:36

ListView使用方式一：

自定义ListView，在java文件中利用ArrayAdapter为ListView写入数据

activity_main.xml文件中声明控件代码如下：

<ListView android:layout_height="wrap_conten"android:layout_width="match_parent"android:id="@+id/Mylist"></ListView>

MainActivity.java代码如下：

public class MainActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);    setContentView(R.layout.activity_main);    ListView myList=(ListView)findViewById(R.id.Mylist);    String[] arr={"吃饭","睡觉","打豆豆"};    ArrayAdapter<String> adapter=new            ArrayAdapter<String>(MainActivity.this,    android.R.layout.simple_list_item_1,arr);    myList.setAdapter(adapter);}

ListView使用方式二：

利用Android自带的ListView，在java文件中利用ArrayAdapter写入数据
1.activity_main.xml文件中声明控件代码如下:

         <ListView              android:layout_height="wrap_content"             android:layout_width="match_parent"             android:id="@id/android:list"             ></ListView>

2.MainActivity.java代码如下：

public class MainActivity extends ListActivity implements OnItemClickListener{             private String [] arrs;             @Override             protected void onCreate(Bundle savedInstanceState) {             super.onCreate(savedInstanceState);             setContentView(R.layout.activity_main);             ListView myList = getListView();             arrs = new String[] {"ss","e","r"};             ArrayAdapter<String>adapter =new ArrayAdapter<String>(MainActivity.this             , android.R.layout.simple_list_item_1,arrs);             myList.setAdapter(adapter);             myList.setOnItemClickListener(this);//声明点击事件         }              //响应点击事件             public void onItemClick(AdapterView<?> parent, View view, int position, long id) {             Toast.makeText(MainActivity.this, "你选择了："+arrs[position], Toast.LENGTH_SHORT).show();             }   }

ListView使用方式三

创建新的ListView布局，在java文件中利用SimpleAdapter写入数据

activity_main.xml文件中声明控件代码如下：

            <ListView                android:layout_height="wrap_content"               android:layout_width="match_parent"               android:id="@+id/Mylist"            ></ListView>

ListView布局文件content.xml文件中代码如下：

            <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"                android:layout_width="match_parent"                android:layout_height="match_parent"                android:orientation="horizontal"                 >                <ImageView                     android:layout_width="wrap_content"                    android:layout_height="wrap_content"                    android:src="@drawable/ic_launcher"                    android:id="@+id/iconimage"                         />                <LinearLayout                     android:layout_width="wrap_content"                    android:layout_height="wrap_content"                    android:orientation="vertical"                    >                    <TextView                     android:layout_width="wrap_content"                    android:layout_height="wrap_content"                    android:id="@+id/catalog"                                    />                    <TextView                     android:layout_width="wrap_content"                    android:layout_height="wrap_content"                    android:id="@+id/desc"                                    />                        </LinearLayout>            </LinearLayout>

MainActivity.java代码如下：

 public class MainActivity extends Activity { @Override  protected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);ListView myList = (ListView)findViewById(R.id.Mylist);List<Map<String,Object>> data= new ArrayList<Map<String,Object>>();int[] iconimages = {R.drawable.ic_launcher,R.drawable.ic_launcher,R.drawable.ic_launcher,R.drawable.ic_launcher,R.drawable.ic_launcher};String [] catalogs = {"1","2","3","4","5"};String [] desc = {"java语言基础很重要","怎样让你的页面出彩","333","444","555"};for (int i = 0; i < 5; i++) {Map<String, Object> map = new HashMap<String, Object>();map.put("iconimg", iconimages[i]);map.put("catalog", catalogs[i]);map.put("desc", desc[i]);data.add(map);} SimpleAdapter adapter=new SimpleAdapter(MainActivity.this, data, R.layout.content, new String[]{"iconimg","catalog","desc"}, new int[] {R.id.iconimage,R.id.catalog,R.id.desc});myList.setAdapter(adapter);}}

1 0