Android(安卓)拖动换图特效

曾经被Iphone用手指在屏幕上滑来滑去拖动图片的操作方式吸引吗？在Android里头，这并不是什么难事。

IaiaiActivity.java类:

package com.iaiai.activity;import android.app.Activity;import android.content.ComponentName;import android.content.Context;import android.content.Intent;import android.content.ServiceConnection;import android.os.Bundle;import android.os.IBinder;import android.view.View;import android.view.View.OnClickListener;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.Button;import android.widget.Gallery;import android.widget.ImageView;/** *  * <p> * Title: IaiaiActivity.java * </p> * <p> * E-Mail: 176291935@qq.com * </p> * <p> * QQ: 176291935 * </p> * <p> * Http: iaiai.iteye.com * </p> * <p> * Create time: 2011-6-26 * </p> *  * @author 丸子 * @version 0.0.1 */public class IaiaiActivity extends Activity {private IaiaiService iaiaiService;@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);Gallery mGallery = (Gallery) findViewById(R.id.Gallery01);mGallery.setAdapter(new ImageApdater(this));}public class ImageApdater extends BaseAdapter {// 类成员myContext为context父类private Context myContext;private int[] myImageIds = { R.drawable.a, R.drawable.b, R.drawable.c,R.drawable.d, R.drawable.e };// 构造函数，有一个参数，即要存储的Contextpublic ImageApdater(Context c) {// TODO Auto-generated constructor stubthis.myContext = c;}// 返回所有的图片总数量@Overridepublic int getCount() {// TODO Auto-generated method stubreturn this.myImageIds.length;}// 利用getItem方法，取得目前容器中图像的数组ID@Overridepublic Object getItem(int position) {// TODO Auto-generated method stubreturn position;}@Overridepublic long getItemId(int position) {// TODO Auto-generated method stubreturn position;}// 取得目前欲显示的图像的VIEW，传入数组ID值使之读取与成像@Overridepublic View getView(int position, View convertView, ViewGroup parent) {// TODO Auto-generated method stubImageView i = new ImageView(this.myContext);i.setImageResource(this.myImageIds[position]);i.setScaleType(ImageView.ScaleType.FIT_XY);// i.setLayoutParams(new Gallery.LayoutParams(120,120));return i;}}}

main.xml布局文件:

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"android:orientation="vertical" android:layout_width="fill_parent"android:layout_height="fill_parent"><Gallery android:id="@+id/Gallery01" android:layout_width="wrap_content" android:layout_height="wrap_content"></Gallery></LinearLayout>

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