android九宫格实现

android九宫格实现，开始以为很复杂，其实只要知道了如何布局就很简单了。
先分析一下原理：
1：我们需要先定义一个主布局文件，宽度和列数用自适应的
android:numColumns="auto_fit"
android:stretchMode="columnWidth"
2：在定义一个子布局，子布局主要是控制九宫格每格的布局，例子是图文垂直布局。
3：在代码里面用SimpleAdapter将数据复制给布局文件，循环布局，就实现了九宫格
直接上代码：android九宫格主布局文件main.xml

<?xml version="1.0" encoding="utf-8"?><GridView xmlns:android="http://schemas.android.com/apk/res/android"     android:id="@+id/gridView1"     android:layout_width="fill_parent"     android:numColumns="auto_fit"     android:stretchMode="columnWidth"      android:columnWidth="75dp"     android:gravity="center"     android:layout_height="fill_parent"></GridView>

android九宫格子布局文件layout_gridview_item.xml

<?xml version="1.0" encoding="utf-8"?><RelativeLayout android:id="@+id/relativeLayout1"     android:layout_width="fill_parent"     android:layout_height="wrap_content"     xmlns:android="http://schemas.android.com/apk/res/android">        <ImageView android:id="@+id/imageView_ItemImage"          android:layout_width="wrap_content"         android:src="@drawable/icon"          android:layout_height="wrap_content"          android:layout_centerHorizontal="true"         >         </ImageView>        <TextView android:id="@+id/textView_ItemText"         android:text="TextView"         android:layout_width="wrap_content"         android:layout_height="wrap_content"          android:layout_below="@+id/imageView_ItemImage"         android:layout_centerHorizontal="true"          >          </TextView>    </RelativeLayout>

android九宫格代码文件：

package com.mixian.activity;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.GridView;import android.widget.SimpleAdapter;import android.widget.Toast;public class GridLayoutActivity extends Activity {/** Called when the activity is first created. */private GridView _gridView1;public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);_gridView1 = (GridView) findViewById(R.id.gridView1);List<HashMap<String, Object>> lst = new ArrayList<HashMap<String, Object>>();for (int i = 0; i < 12; i++) {HashMap<String, Object> map = new HashMap<String, Object>();map.put("itemImage", R.drawable.icon);map.put("itemText", "item" + i);lst.add(map);}SimpleAdapter adpter = new SimpleAdapter(this, lst,R.layout.layout_gridview_item, // 指定 子项的布局文件的IDnew String[] { "itemImage", "itemText" }, // 指定 数据的列new int[] { R.id.imageView_ItemImage, R.id.textView_ItemText });// 指定数据的列对应到的// 绑定的目标控件_gridView1.setAdapter(adpter);_gridView1.setOnItemClickListener(onclickcistener);}private OnItemClickListener onclickcistener = new OnItemClickListener() {public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,long arg3) {Object obj = _gridView1.getAdapter().getItem(arg2);HashMap<String, Object> map = (HashMap<String, Object>) obj;String str = (String) map.get("itemText");Toast.makeText(getApplicationContext(), "" + str, 0).show();}};}

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