Android应用开发控件——Gallery和ImageSwitcher

<?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"
    >
    <ScrollView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:layout_weight="4">
        <LinearLayout
        android:layout_width="fill_parent"
        android:orientation="vertical"
        android:layout_height="wrap_content">
         <LinearLayout
         android:layout_width="fill_parent"
         android:orientation="horizontal"
         android:layout_height="wrap_content"
         android:layout_marginLeft="10dp"
            android:layout_marginRight="10dp">
          <ImageButton
          android:id="@+id/btn_img"
          android:layout_width="60px"
          android:layout_height="60px"
          android:scaleType="centerCrop"
          android:src="@drawable/icon"/>
          <EditText
          android:layout_width="fill_parent"
             android:layout_height="wrap_content"
             android:id="@+id/et_nama"
             android:gravity="top"
             android:layout_gravity="center_vertical"
             android:hint="姓名"/>
         </LinearLayout>
        
         <LinearLayout
         android:layout_width="fill_parent"
         android:orientation="vertical"
         android:layout_height="wrap_content"
         android:layout_marginLeft="10dp"
            android:layout_marginRight="10dp">
             <TextView
                android:layout_width="fill_parent"
             android:layout_height="wrap_content"
             android:text="手机"
             android:textSize="20dp"></TextView>
             <EditText
            android:id="@+id/et_mobilephone"
             android:layout_width="fill_parent"
             android:layout_height="wrap_content"
             android:gravity="top"
             android:phoneNumber="true"
             android:hint="手机"/>
            </LinearLayout>
           
            <LinearLayout
         android:layout_width="fill_parent"
         android:orientation="vertical"
         android:layout_height="wrap_content"
         android:layout_marginLeft="10dp"
            android:layout_marginRight="10dp">
             <TextView
                android:layout_width="fill_parent"
             android:layout_height="wrap_content"
             android:text="办公室电话"
             android:textSize="20dp"></TextView>
             <EditText
            android:id="@+id/et_officephone"
             android:layout_width="fill_parent"
             android:layout_height="wrap_content"
             android:gravity="top"
             android:phoneNumber="true"
             android:hint="办公室电话"/>
            </LinearLayout>
           
            <LinearLayout
         android:layout_width="fill_parent"
         android:orientation="vertical"
         android:layout_height="wrap_content"
         android:layout_marginLeft="10dp"
            android:layout_marginRight="10dp">
             <TextView
                android:layout_width="fill_parent"
             android:layout_height="wrap_content"
             android:text="家庭电话"
             android:textSize="20dp"></TextView>
             <EditText
            android:id="@+id/et_homephone"
             android:layout_width="fill_parent"
             android:layout_height="wrap_content"
             android:gravity="top"
             android:phoneNumber="true"
             android:hint="家庭电话"/>
            </LinearLayout>
           
            <LinearLayout
         android:layout_width="fill_parent"
         android:orientation="vertical"
         android:layout_height="wrap_content"
         android:layout_marginLeft="10dp"
            android:layout_marginRight="10dp">
             <TextView
                android:layout_width="fill_parent"
             android:layout_height="wrap_content"
             android:text="职务职称"
             android:textSize="20dp"></TextView>
             <EditText
            android:id="@+id/et_position"
             android:layout_width="fill_parent"
             android:layout_height="wrap_content"
             android:gravity="top"
             android:hint="职务职称"/>
            </LinearLayout>
           
            <LinearLayout
         android:layout_width="fill_parent"
         android:orientation="vertical"
         android:layout_height="wrap_content"
         android:layout_marginLeft="10dp"
            android:layout_marginRight="10dp">
             <TextView
                android:layout_width="fill_parent"
             android:layout_height="wrap_content"
             android:text="单位名称"
             android:textSize="20dp"></TextView>
             <EditText
            android:id="@+id/et_company"
             android:layout_width="fill_parent"
             android:layout_height="wrap_content"
             android:gravity="top"
             android:hint="单位名称"/>
            </LinearLayout>
           
            <LinearLayout
         android:layout_width="fill_parent"
         android:orientation="vertical"
         android:layout_height="wrap_content"
         android:layout_marginLeft="10dp"
            android:layout_marginRight="10dp">
             <TextView
                android:layout_width="fill_parent"
             android:layout_height="wrap_content"
             android:text="地址"
             android:textSize="20dp"></TextView>
             <EditText
            android:id="@+id/et_address"
             android:layout_width="fill_parent"
             android:layout_height="wrap_content"
             android:gravity="top"
             android:hint="地址"/>
            </LinearLayout>
           
            <LinearLayout
         android:layout_width="fill_parent"
         android:orientation="vertical"
         android:layout_height="wrap_content"
         android:layout_marginLeft="10dp"
            android:layout_marginRight="10dp">
             <TextView
                android:layout_width="fill_parent"
             android:layout_height="wrap_content"
             android:text="邮政编码"
             android:textSize="20dp"></TextView>
             <EditText
            android:id="@+id/et_ripcode"
             android:layout_width="fill_parent"
             android:layout_height="wrap_content"
             android:gravity="top"
             android:phoneNumber="true"
             android:hint="邮政编码"/>
            </LinearLayout>
           
            <LinearLayout
         android:layout_width="fill_parent"
         android:orientation="vertical"
         android:layout_height="wrap_content"
         android:layout_marginLeft="10dp"
            android:layout_marginRight="10dp">
             <TextView
                android:layout_width="fill_parent"
             android:layout_height="wrap_content"
             android:text="E—Mail"
             android:textSize="20dp"></TextView>
             <EditText
            android:id="@+id/et_email"
             android:layout_width="fill_parent"
             android:layout_height="wrap_content"
             android:gravity="top"
             android:hint="E—Mail"/>
            </LinearLayout>
           
            <LinearLayout
         android:layout_width="fill_parent"
         android:orientation="vertical"
         android:layout_height="wrap_content"
         android:layout_marginLeft="10dp"
            android:layout_marginRight="10dp">
             <TextView
                android:layout_width="fill_parent"
             android:layout_height="wrap_content"
             android:text="其他联系方式"
             android:textSize="20dp"></TextView>
             <EditText
            android:id="@+id/et_other"
             android:layout_width="fill_parent"
             android:layout_height="wrap_content"
             android:gravity="top"
             android:hint="其他联系方式"/>
            </LinearLayout>
           
            <LinearLayout
         android:layout_width="fill_parent"
         android:orientation="vertical"
         android:layout_height="wrap_content"
         android:layout_marginLeft="10dp"
            android:layout_marginRight="10dp">
             <TextView
                android:layout_width="fill_parent"
             android:layout_height="wrap_content"
             android:text="备注"
             android:textSize="20dp"></TextView>
             <EditText
            android:id="@+id/et_postcode"
             android:layout_width="fill_parent"
             android:layout_height="wrap_content"
             android:gravity="top"
             android:hint="备注"/>
            </LinearLayout>
           
        </LinearLayout>
    </ScrollView>
       <LinearLayout
        android:layout_width="fill_parent"
        android:layout_weight="1"
         android:orientation="horizontal"
        android:layout_height="wrap_content"
         android:layout_marginLeft="10dp"
         android:layout_marginRight="10dp">
        
         <Button
         android:id="@+id/btn_save"
          android:layout_width="wrap_content"
        android:layout_weight="1"
         android:text="保存"
        android:layout_height="wrap_content"/>
        
         <Button
         android:id="@+id/btn_return"
          android:layout_width="wrap_content"
        android:layout_weight="1"
         android:text="返回"
        android:layout_height="wrap_content"/>
        
        </LinearLayout>
</LinearLayout>

<?xml version="1.0" encoding="utf-8"?>
 
<RelativeLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">
   
    <Gallery
    android:id="@+id/img_gallery"
    android:layout_width="fill_parent"
    android:layout_height="110px"
    android:layout_alignParentLeft="true"
    android:layout_marginTop="10px"></Gallery>
   
    <ImageSwitcher
    android:id="@+id/img_switcher"
    android:layout_width="90px"
    android:layout_height="90px"
    android:layout_alignBottom="@+id/img_gallery"
    android:layout_alignParentTop="true"
    android:layout_centerHorizontal="true"
    >
    </ImageSwitcher>
   
    </RelativeLayout>
 

package org.ContactProject;

import android.app.Activity;
import android.app.AlertDialog;
import android.content.Context;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageButton;
import android.widget.ImageSwitcher;
import android.widget.ImageView;
import android.widget.ViewSwitcher.ViewFactory;

public class AddNewActivity extends Activity{

 private int [] images={ R.drawable.image1,R.drawable.image2,
       R.drawable.image3,R.drawable.image4,
       R.drawable.image5,R.drawable.image6,
       R.drawable.image7,R.drawable.image8,
       R.drawable.image9,R.drawable.image10,
       R.drawable.image11,R.drawable.image12,
       R.drawable.image13,R.drawable.image14,
       R.drawable.image15,R.drawable.image16,
       R.drawable.image17,R.drawable.image18,
       R.drawable.image19,R.drawable.image20,
       R.drawable.image21,R.drawable.image22,
       R.drawable.image23,R.drawable.image24,
       R.drawable.image25,R.drawable.image26,
       R.drawable.image27,R.drawable.image28,
       R.drawable.image29,R.drawable.image30};
 private ImageButton btn_img;
 private AlertDialog imageChooseDialog;
 private Gallery gallery;
 private ImageSwitcher imageSwitcher;
 private int imageposition;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  // TODO Auto-generated method stub
  super.onCreate(savedInstanceState);
  setContentView(R.layout.add);
  btn_img=(ImageButton)findViewById(R.id.btn_img);
  btn_img.setOnClickListener(new OnClickListener(){

   @Override
   public void onClick(View v) {
    // TODO Auto-generated method stub
    initImageChooseDialog();
    imageChooseDialog.show();
   }});
 }
 

 private void initImageChooseDialog()
 {
  AlertDialog.Builder builder=new AlertDialog.Builder(this);
  builder.setTitle("请选择头像");
  builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {
   
   @Override
   public void onClick(DialogInterface dialog, int which) {
    // TODO Auto-generated method stub
    btn_img.setImageResource(images[imageposition]);
   }
  });
  
  builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {
   
   @Override
   public void onClick(DialogInterface dialog, int which) {
    // TODO Auto-generated method stub
    
   }
  });
  LayoutInflater flater=LayoutInflater.from(this);
  View view=flater.inflate(R.layout.imageswich, null);
  gallery=(Gallery) view.findViewById(R.id.img_gallery);
  gallery.setAdapter(new ImageAdapter(this));
  gallery.setSelection(images.length/2);
  
  imageSwitcher=(ImageSwitcher) view.findViewById(R.id.img_switcher);
  gallery.setOnItemSelectedListener(new OnItemSelectedListener(){

   @Override
   public void onItemSelected(AdapterView<?> arg0, View arg1,
     int arg2, long arg3) {
    // TODO Auto-generated method stub
    imageposition=arg2;
    imageSwitcher.setImageResource(images[arg2]);
   }

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

  imageSwitcher.setFactory(new MyViewFactory(this));
  builder.setView(view);
  
  imageChooseDialog=builder.create();
 }
 
 class ImageAdapter extends BaseAdapter{

  private Context context;
  
  public ImageAdapter(Context context)
  {
   this.context=context;
  }
  @Override
  public int getCount() {
   // TODO Auto-generated method stub
   return images.length;
  }

  @Override
  public Object getItem(int position) {
   // TODO Auto-generated method stub
   return null;
  }

  @Override
  public long getItemId(int position) {
   // TODO Auto-generated method stub
   return 0;
  }

  @Override
  public View getView(int position, View convertView, ViewGroup parent) {
   // TODO Auto-generated method stub
   ImageView iv=new ImageView(context);
   iv.setImageResource(images[position]);
   iv.setAdjustViewBounds(true);
   iv.setLayoutParams(new Gallery.LayoutParams(80,80));
   iv.setPadding(15, 10, 15, 10);
   return iv;
  }}
 class MyViewFactory implements ViewFactory{

        private Context context;
  
  public MyViewFactory(Context context)
  {
   this.context=context;
  }
  @Override
  public View makeView() {
   // TODO Auto-generated method stub
   ImageView iv=new ImageView(context);
   iv.setLayoutParams(new ImageSwitcher.LayoutParams(90,90));
   return iv;
  }}
}