2.4.11 网格视图和图像切换器

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >

    <GridView
        android:id="@+id/gridView1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:numColumns="3" 
        android:gravity="center">
    </GridView>

    <ImageSwitcher
        android:id="@+id/imageSwitcher1"
        android:layout_width="200dp"
        android:layout_height="200dp"
        android:layout_gravity="center_horizontal">
    </ImageSwitcher>

</LinearLayout>

package com.moon.hello2;

import java.util.ArrayList;
import java.util.Calendar;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import android.R.anim;
import android.R.integer;
import android.app.Activity;
import android.database.DataSetObserver;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.Gravity;
import android.view.Menu;
import android.view.View;
import android.view.ViewGroup;
import android.view.View.OnClickListener;
import android.view.ViewGroup.LayoutParams;
import android.widget.AbsListView;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.AutoCompleteTextView;
import android.widget.Button;
import android.widget.DatePicker;
import android.widget.ExpandableListAdapter;
import android.widget.ExpandableListView;
import android.widget.GridView;
import android.widget.ImageSwitcher;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.RatingBar;
import android.widget.SimpleAdapter;
import android.widget.RatingBar.OnRatingBarChangeListener;
import android.widget.SeekBar;
import android.widget.DatePicker.OnDateChangedListener;
import android.widget.SeekBar.OnSeekBarChangeListener;
import android.widget.TabHost;
import android.widget.TextView;
import android.widget.TimePicker;
import android.widget.TimePicker.OnTimeChangedListener;
import android.widget.ViewSwitcher.ViewFactory;

public class MainActivity extends Activity {
    private final int[] imgs = new int[]{R.drawable.a1,R.drawable.a2,R.drawable.a3,R.drawable.a4,R.drawable.a5,R.drawable.a6,R.drawable.a7,R.drawable.a8}; 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        this.setContentView(R.layout.activity_main);
        GridView gridView = (GridView)findViewById(R.id.gridView1);
        List<Map<String, Object>> data = new ArrayList<Map<String,Object>>();
        for (int imgId : this.imgs) {
            Map<String,Object> newMap = new HashMap<String, Object>();
            newMap.put("img", imgId);
            data.add(newMap);
        }
        SimpleAdapter simpleAdapter = new SimpleAdapter(this, data, R.layout.cell, new String[]{"img"}, new int[]{R.id.imgView});
        gridView.setAdapter(simpleAdapter);
        final ImageSwitcher imageSwitcher = (ImageSwitcher)findViewById(R.id.imageSwitcher1);
        imageSwitcher.setInAnimation(this, android.R.anim.fade_in);
        imageSwitcher.setOutAnimation(this, android.R.anim.fade_out);
        imageSwitcher.setFactory(new ViewFactory() {
            
            @Override
            public View makeView() {
                // TODO Auto-generated method stub
                ImageView imageView = new ImageView(MainActivity.this);
                imageView.setBackgroundColor(0xff0000);
                imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);
                imageView.setLayoutParams(new ImageSwitcher.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
                return imageView;
            }
        });
        gridView.setOnItemClickListener(new OnItemClickListener() {

            @Override
            public void onItemClick(AdapterView<?> parent, View view, int position,
                    long id) {
                // TODO Auto-generated method stub
                imageSwitcher.setImageResource(MainActivity.this.imgs[position%imgs.length]);
            }
        });
        gridView.setOnItemSelectedListener(new OnItemSelectedListener() {

            @Override
            public void onItemSelected(AdapterView<?> parent, View view,
                    int position, long arg3) {
                // TODO Auto-generated method stub
                imageSwitcher.setImageResource(MainActivity.this.imgs[position%imgs.length]);
            }

            @Override
            public void onNothingSelected(AdapterView<?> arg0) {
                // TODO Auto-generated method stub
                
            }
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

}