使用ImageSwitcher和Gallery实现图片的浏览

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<pre class="html" name="code"><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical"    tools:context=".MainActivity" >    <LinearLayout        android:layout_width="fill_parent"        android:layout_height="250dp"         android:gravity="center">        <ImageSwitcher            android:id="@+id/IS01"            android:layout_width="wrap_content"            android:layout_height="wrap_content"             >        </ImageSwitcher>    </LinearLayout>    <LinearLayout        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:orientation="horizontal">        <Gallery             android:id="@+id/Ga01"            android:layout_width="fill_parent"            android:layout_height="80dp"            android:spacing="5dp"/>    </LinearLayout></LinearLayout>

package cn.edu.bzu.mageswitcher;import cn.edu.bzu.mageswitcher.R;import android.os.Bundle;import android.app.Activity;import android.content.Context;import android.view.Menu;import android.view.View;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.AdapterView.OnItemClickListener;import android.widget.BaseAdapter;import android.widget.Gallery;import android.widget.ImageSwitcher;import android.widget.ImageView;import android.widget.ViewSwitcher.ViewFactory;public class MainActivity extends Activity implements ViewFactory {private final static Integer[] INTEGERS = {R.drawable.a,R.drawable.b,R.drawable.c,R.drawable.d,R.drawable.e,R.drawable.f,R.drawable.g,R.drawable.h,};ImageSwitcher imageSwitcher;Gallery gallery;private static int index=0;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);imageSwitcher = (ImageSwitcher)findViewById(R.id.IS01);imageSwitcher.setFactory(this);imageSwitcher.setImageResource(INTEGERS[index]);gallery = (Gallery)findViewById(R.id.Ga01);gallery.setAdapter(new ImageAdapter(this));gallery.setOnItemClickListener(new OnItemClickListener() {@Overridepublic void onItemClick(AdapterView<?> arg0, View arg1, int position,long arg3) {imageSwitcher.setImageResource(INTEGERS[position]);}});}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {// Inflate the menu; this adds items to the action bar if it is present.getMenuInflater().inflate(R.menu.main, menu);return true;}@Overridepublic View makeView() {return new ImageView(this);}class ImageAdapter extends BaseAdapter{Context context;public ImageAdapter(Context context){this.context = context;}@Overridepublic int getCount() {// TODO Auto-generated method stubreturn INTEGERS.length;}@Overridepublic Object getItem(int position) {// TODO Auto-generated method stubreturn position;}@Overridepublic long getItemId(int position) {// TODO Auto-generated method stubreturn position;}@Overridepublic View getView(int position, View v, ViewGroup vg) {ImageView imageView = new ImageView(context);imageView.setImageResource(INTEGERS[position]);imageView.setLayoutParams(new Gallery.LayoutParams(120, 120));imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);return imageView;}}}

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