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;

    }



}