GridView与ArrayAdapter的结合

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:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">

    <GridView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/gridView"
        android:numColumns="2"
        android:horizontalSpacing="1dp"

        android:verticalSpacing="5dp"
        android:layout_alignParentLeft="true"
        android:layout_alignParentStart="true"
        android:layout_marginTop="146dp" />

</RelativeLayout>

然后，我们来设置数据源（用来填充GridView的）。首先在values下创建一个xml文件，命名为array.xml,内容如下:

<?xml version="1.0" encoding="utf-8"?>
<resources>
    <!-- 热门城市 -->
    <string-array name="hot_city">
        <item>北京</item>
        <item>上海</item>
        <item>广州</item>
        <item>深圳</item>
        <item>杭州</item>
        <item>成都</item>
    </string-array>

</resources>

MainActivity.java:

package com.example.gridview;

import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ArrayAdapter;
import android.widget.GridView;


public class MainActivity extends ActionBarActivity {
    private ArrayAdapter<String> mAdapterHot;
    private GridView gv;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        gv = (GridView) findViewById(R.id.gridView);
        //第一个参数是context,第二个参数是GridView中item的布局文件，第三个参数是数据源
        mAdapterHot = new ArrayAdapter<String>(MainActivity.this, R.layout.text_item, getResources().getStringArray(R.array.hot_city));
        gv.setAdapter(mAdapterHot);
    }
}

text_item.xml:

<?xml version="1.0" encoding="utf-8"?>
<TextView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/myCheckedTextView1"
    android:layout_width="80dp"
    android:layout_height="35dp"
    android:textColor="#a99a8a"
    android:textSize="16dp"
    android:text="aaaaa"
    android:background="#88aa99"
    android:gravity="center"
    android:paddingLeft="6dip"
    />