第6个作业

package com.example.shitu;

import android.support.v7.app.ActionBarActivity;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;
import android.annotation.SuppressLint;
import android.os.Bundle;

public class MainActivity extends ActionBarActivity {

    public String[] name = { "京东", "QQ", "斗地主", "微博", "天猫", "UC", "微信" };
    public int[] icons = { R.drawable.w1, R.drawable.w2, R.drawable.w3,
            R.drawable.w4, R.drawable.w5, R.drawable.w6, R.drawable.w7, };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ListView listview = (ListView) findViewById(R.id.listView1);
        MyBaseAdapter adapter = new MyBaseAdapter();
        listview.setAdapter(adapter);
    }

    class MyBaseAdapter extends BaseAdapter {

        @Override
        public int getCount() {
            return name.length;
        }

        @Override
        public Object getItem(int position) {
            return name[position];
        }

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

        @SuppressLint("ViewHolder")
        @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(name[position]);
            iv.setBackgroundResource(icons[position]);
            return view;
        }

    }
}

<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.shitu.MainActivity" >
<ListView
        android:id="@+id/listView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_centerVertical="true" >
         </ListView>
    
    </RelativeLayout>

<?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>