Gallery是Android中的圖片庫控件。可以瀏覽自己的圖片相冊。
效果圖
本程序main.xml源碼
本程序ImageAdapter類源碼
package com.sx.Gallery;
<?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">
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="@string/hello" />
<Gallery
android:id="@+id/gallery"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:spacing="2px" />
<!-- android:spacing="2px"用來設置圖片之間的間距 -->
</LinearLayout>
JAVA源碼
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;
public class ImageAdapter extends BaseAdapter
{
private Context context;
private int[] MyImageIDs =
{
R.drawable.img1,
R.drawable.img2,
R.drawable.img3,
R.drawable.img4,
R.drawable.img5,
R.drawable.img6,
R.drawable.img7,
R.drawable.img8,
R.drawable.img9,
R.drawable.img10,
R.drawable.img11,
R.drawable.img12,
R.drawable.img13,
R.drawable.img14,
R.drawable.img15,
R.drawable.img16,
R.drawable.img17,
R.drawable.img18,
R.drawable.img19,
R.drawable.img20
};
public ImageAdapter(Context context)
{
this.context = context;
}
// 獲取圖片個數
public int getCount()
{
return MyImageIDs.length;
//return Integer.MAX_VALUE;
}
// 獲取圖片在庫中的位置
public Object getItem(int position)
{
return position;
}
// 獲取圖片在庫中的ID
public long getItemId(int id)
{
return id;
}
public View getView(int position, View convertView, ViewGroup parent)
{
ImageView imageview = new ImageView(this.context);
// 給ImageView設置資源
imageview.setImageResource(this.MyImageIDs[position]);
// 設置佈局 圖片120*120
imageview.setLayoutParams(new Gallery.LayoutParams(120, 120));
// 設置顯示比例類型
imageview.setScaleType(ImageView.ScaleType.FIT_XY);
//imageview.setScaleType(ImageView.ScaleType.FIT_CENTER);
return imageview;
}
}
//要想實現圖片無限循環可拖動修改getCount() 函數改爲返回值爲return Integer.MAX_VALUE;
//imageview.setImageResource(this.MyImageIDs[position] % MyImageIDs.length.); 即可
Activity源碼
package com.sx.Gallery;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Gallery;
import android.widget.Toast;
public class GalleryActivity extends Activity
{
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
CreateGallery();
}
private void CreateGallery()
{
//獲得Gallery對象
Gallery gellery=(Gallery)this.findViewById(R.id.gallery);
//添加ImageAdapter給Gallery對象 注意哦Gallery類並沒有setAdapter這個方法 這個方法是從AbsSpinner類繼承的
gellery.setAdapter(new ImageAdapter(this));
//設置Gallery的背景圖片
//gellery.setBackgroundResource(R.drawable.bg0);
//設置Gallery的事件監聽
gellery.setOnItemClickListener(new GalleryItemListener());
}
class GalleryItemListener implements OnItemClickListener
{
public void onItemClick(AdapterView<?> parent, View view, int position, long id)
{
Toast.makeText(GalleryActivity.this, "你選擇了" + (position + 1) + " 號圖片", Toast.LENGTH_SHORT).show();
}
}
}