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;    }}

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