第六个作业--android应用列表

 

 

MainActivity.java

public class MainActivity extends ActionBarActivity {
    // 定义数据
    private String[] titles = { "京东商城", "QQ", "QQ斗地主", "新浪微博", "天猫", "UC浏览器","微信" };
    // 图片集合
    private int[] icons= {
            R.drawable.ic_luncher,R.drawable.ic_luncher02,R.drawable.ic_luncher03,R.drawable.ic_luncher04,R.drawable.ic_luncher05,R.drawable.ic_luncher06,R.drawable.ic_luncher07};
    
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ListView lv = (ListView) findViewById(R.id.listView);
        Myadapter mAdapt = new Myadapter();
        lv.setAdapter((ListAdapter) mAdapt);
    }

    class Myadapter extends BaseAdapter {

        
        public int getCount() {
            
            return titles.length;
        }

    
        public Object getItem(int position) {
            
            return titles[position];
        }

        
        public long getItemId(int position) {
            
            return position;
        }

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            View view=View.inflate(MainActivity.this, R.layout.list_item, null);
            TextView tv=(TextView)view.findViewById(R.id.title);
            ImageView iv=(ImageView)view.findViewById(R.id.iv);
            tv.setText(titles[position]);
            iv.setBackgroundResource(icons[position]);
            return view;
        }

    }
}

Activity_main.xml

<RelativeLayout 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="com.example.myadapter.MainActivity" >

    <ListView
        android:id="@+id/listView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:layout_marginLeft="10dp" >
    ListView>

RelativeLayout>

list_item.xml

xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="16dp">
    <ImageView
        android:id="@+id/iv"
        android:layout_width="60dp"
        android:layout_height="60dp"
        android:layout_centerVertical="true"/>
    <RelativeLayout
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
    
        android:layout_toRightOf="@+id/iv"
        android:layout_centerVertical="true">
        <TextView
            android:id="@+id/title"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="京东"
            android:textSize="20sp"
            android:textColor="#000000" />
       
    RelativeLayout>
RelativeLayout>