简单实现设置Gridview默认选中状态

来源：互联网发布：全知之眼 x-filex 编辑：程序博客网时间：2024/05/16 10:20

main.XMl

XML code

<?xml version="1.0" encoding="utf-8"?> <LinearLayout android:orientation="vertical" android:id="@+id/loginRoot"    android:layout_width="fill_parent" android:layout_height="fill_parent"    xmlns:android="http://schemas.android.com/apk/res/android">    <LinearLayout android:gravity="center_horizontal"        android:background="@drawable/transition_line" android:layout_width="fill_parent"        android:layout_height="wrap_content">    </LinearLayout>    <!-- 中间动态加载View -->    <ScrollView android:measureAllChildren="true" android:id="@+id/containerBody"        android:layout_weight="1" android:layout_height="fill_parent"        android:layout_width="fill_parent">    </ScrollView>    <GridView android:id="@+id/GridView_toolbar"        android:layout_height="60dip" android:layout_width="fill_parent"        android:layout_alignParentBottom="true">    </GridView></LinearLayout>

Gridview item Xml

XML code

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:id="@+id/RelativeLayout_Item"    android:layout_width="fill_parent" android:layout_height="wrap_content"    android:paddingTop="10dip">    <ImageView android:id="@+id/item_image"        android:layout_centerHorizontal="true" android:layout_width="wrap_content"        android:layout_height="27dip"></ImageView>    <TextView android:layout_below="@id/item_image" android:id="@+id/item_text"        android:layout_centerHorizontal="true" android:layout_width="wrap_content"        android:layout_height="wrap_content" android:textSize="13dip"></TextView>        </RelativeLayout>

mainActiviy

Java code

package com.android.cyts.travel.publics.common;import java.util.ArrayList;import java.util.HashMap;import android.content.Intent;import android.graphics.Color;import android.graphics.drawable.ColorDrawable;import android.os.Bundle;import android.view.Gravity;import android.view.View;import android.view.ViewGroup.LayoutParams;import android.view.Window;import android.widget.AdapterView;import android.widget.GridView;import android.widget.ImageView;import android.widget.ScrollView;import android.widget.SimpleAdapter;import android.widget.Toast;import android.widget.AdapterView.OnItemClickListener;import android.app.ActivityGroup;/** *  * @author  * @created  */public class MainMenuActivity extends ActivityGroup {    /** 默认首页状态 */    private boolean status;    private boolean pagehomestatus;    /** 动态加载的容器 */    private ScrollView container;    /** 菜单 */    private GridView menubarGrid;    private Intent intent = null;    private showImage topImgAdapter;    private FootBarAdapter footbarAdapter;    private final int TOOLBAR_ITEM_PAGEHOME = 0;    private final int TOOLBAR_ITEM_PHOTO = 1;    private final int TOOLBAR_ITEM_TRAVEL = 2;    private final int TOOLBAR_ITEM_MAP = 3;    private final int TOOLBAR_ITEM_INFORMATION = 4;    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main_activity);        container = (ScrollView) findViewById(R.id.containerBody);        showMenu();        subActivity();    }    /** 底部菜单图片 **/    int[] menu_toolbar_image_array = { R.drawable.pagehome, R.drawable.photo,            R.drawable.travel, R.drawable.map, R.drawable.information };    /** 底部菜单文字 **/    String[] menu_toolbar_name_array = { "!!", "!!", "!!", "!!", "!!" };    public void showMenu() {        intent = new Intent();        // 创建底部菜单 Toolbar        menubarGrid = (GridView) findViewById(R.id.GridView_toolbar);        menubarGrid.setBackgroundResource(R.drawable.bg);// 设置背景        menubarGrid.setNumColumns(5);// 设置每行列数        menubarGrid.setGravity(Gravity.CENTER);// 位置居中        menubarGrid.setVerticalSpacing(10);// 垂直间隔        menubarGrid.setHorizontalSpacing(10);// 水平间隔        int width = this.getWindowManager().getDefaultDisplay().getWidth()                / menu_toolbar_image_array.length;        topImgAdapter = new showImage(this, menu_toolbar_image_array, width,                50, R.drawable.headlogo);        // menubarGrid.setAdapter(topImgAdapter);        menubarGrid.setAdapter(getMenuAdapter(menu_toolbar_name_array,                menu_toolbar_image_array));// 设置菜单Adapter        menubarGrid.setSelector(new ColorDrawable(Color.TRANSPARENT));        /** 监听底部菜单选项 **/        menubarGrid.setOnItemClickListener(new OnItemClickListener() {            public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,                    long arg3) {                status = true;//                Toast.makeText(MainMenuActivity.this,//                        menu_toolbar_name_array[arg2], Toast.LENGTH_SHORT)//                        .show();                footbarAdapter.setSelectedPosition(arg2);                // topImgAdapter.SetFocus(arg2);                footbarAdapter.notifyDataSetInvalidated();//                footbarAdapter.SetFocus(arg2);                switch (arg2) {                case TOOLBAR_ITEM_PAGEHOME:                    intent.setClass(MainMenuActivity.this, ****.class);                    break;                case TOOLBAR_ITEM_PHOTO:                    pagehomestatus=false;                    intent.setClass(MainMenuActivity.this, ****.class);                    break;                case TOOLBAR_ITEM_TRAVEL:                    pagehomestatus=false;                    intent.setClass(MainMenuActivity.this, ****.class);                    break;                case TOOLBAR_ITEM_MAP:                    pagehomestatus=false;                    intent.setClass(MainMenuActivity.this, ****.class);                    break;                case TOOLBAR_ITEM_INFORMATION:                    pagehomestatus=false;                    intent.setClass(MainMenuActivity.this, Information.class);                    // toolbarGrid.setVisibility(View.GONE);//隐藏菜单View.VISIBLE                    break;                }                if(!pagehomestatus)                    subActivity();            }        });    }    /**     * 动态添加内容     */    public void subActivity() {        if (status == false) {            intent.setClass(MainMenuActivity.this, PageHome.class);            pagehomestatus=true;        }        container.removeAllViews();        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);        // Activity 转为 View        Window subActivity = getLocalActivityManager().startActivity(                "subActivity", intent);        // 容器添加View        container.addView(subActivity.getDecorView(), LayoutParams.FILL_PARENT,                LayoutParams.FILL_PARENT);    }    /**     * 构造菜单Adapter     *      * @param menuNameArray     *            名称     * @param imageResourceArray     *            图片     * @return SimpleAdapter     */    private SimpleAdapter getMenuAdapter(String[] menuNameArray,            int[] imageResourceArray) {        ArrayList<HashMap<String, Object>> data = new ArrayList<HashMap<String, Object>>();        for (int i = 0; i < menuNameArray.length; i++) {            HashMap<String, Object> map = new HashMap<String, Object>();            map.put("itemImage", imageResourceArray[i]);            map.put("itemText", menuNameArray[i]);            data.add(map);        }//        SimpleAdapter simperAdapter = new SimpleAdapter(MainMenuActivity.this,//                data, R.layout.item_menu, new String[] { "itemImage",//                        "itemText" }, new int[] { R.id.item_image,//                        R.id.item_text });//        return simperAdapter;                 footbarAdapter = new FootBarAdapter(this, data,                      R.layout.item_menu, new String[] { "itemImage", "itemText" },                      new int[] { R.id.item_image, R.id.item_text });           return footbarAdapter;      }}

Java code

package com.android.cyts.travel.publics.common;import java.util.ArrayList;import java.util.List;import java.util.Map;import android.content.Context;import android.view.View;import android.view.ViewGroup;import android.widget.SimpleAdapter;/** * @author  * @created on  * @version $Id$ */public class FootBarAdapter extends SimpleAdapter {    private View v;    private ArrayList<View> av = new ArrayList<View>();    public FootBarAdapter(Context context, List<? extends Map<String, ?>> data,            int resource, String[] from, int[] to) {        super(context, data, resource, from, to);    }//    public void SetFocus(int index) {//        for (int i = 0; i < 5; i++) {//            if (i != index) {//                av.get(i).setBackgroundResource(0);// 恢复未选中的样式//            }//        }//        av.get(index).setBackgroundResource(R.drawable.headlogo);// 设置选中的样式//        x=0;//    }         private int selectedPosition = 0;// 选中的位置      public void setSelectedPosition(int position) {           selectedPosition = position;       }                int x = 0;    public View getView(int position, View convertView, ViewGroup parent) {        v = super.getView(position, convertView, parent);        x++;        if (position == selectedPosition) {            v.setBackgroundResource(R.drawable.headlogo);        }        else{            v.setBackgroundResource(0);        }//        System.out.println("_---" + x);//        System.out.println("_+++" + position);//        if (x >= 2 && x <= 6) {//            av.add(v);//        }//        System.out.println("!!!" + av.size());        return v;    }}