做相册，这个类必须的，呵呵
import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.animation.AnimationUtils;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.Gallery.LayoutParams;
import android.widget.ImageSwitcher;
import android.widget.ImageView;
import android.widget.ViewSwitcher;
public class GalleryActivity extends Activity implements AdapterView.OnItemSelectedListener,ViewSwitcher.ViewFactory{
/** Called when the activity is first created. */
private Gallery gallery;
private ImageSwitcher mSwitcher;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);// 去掉标题
setContentView(R.layout.main);
mSwitcher = (ImageSwitcher) findViewById(R.id.switcher);
gallery = (Gallery) findViewById(R.id.gallery);
mSwitcher.setFactory(this); / 监听/makeView方法。
//设置动画
mSwitcher.setInAnimation(AnimationUtils.loadAnimation(this,
android.R.anim.fade_in));
mSwitcher.setOutAnimation(AnimationUtils.loadAnimation(this,
android.R.anim.fade_out));
//设置数据适配器
gallery.setAdapter(new ImageAdapter(this));
gallery.setOnItemSelectedListener(this);
}
public class ImageAdapter extends BaseAdapter{
Context context;
public ImageAdapter(Context context) {
this.context = context;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return mImageIds.length;
}
@Override
public Object getItem(int arg0) {
// TODO Auto-generated method stub
return arg0;
}
@Override
public long getItemId(int arg0) {
// TODO Auto-generated method stub
return arg0;
}
@Override
public View getView(int position, View view, ViewGroup parent) {
// TODO Auto-generated method stub
ImageView imageview = new ImageView(context);
imageview.setImageResource(mImageIds[position]);
imageview.setAdjustViewBounds(true);
//没有默认布局，所以下面的设置必须有
imageview.setScaleType(ImageView.ScaleType.FIT_XY);
imageview.setLayoutParams(new Gallery.LayoutParams(
LayoutParams.WRAP_CONTENT,
LayoutParams.WRAP_CONTENT));
return imageview;
}
}
@Override
public void onItemSelected(AdapterView<?> parent, View view, int position,
long id) {
mSwitcher.setImageResource(mImageIds[position]);
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
// TODO Auto-generated method stub
}
@Override
public View makeView() {
// TODO Auto-generated method stub
ImageView i = new ImageView(this);
i.setScaleType(ImageView.ScaleType.FIT_CENTER);
i.setLayoutParams(new ImageSwitcher.LayoutParams(
LayoutParams.FILL_PARENT,
LayoutParams.FILL_PARENT));
return i;
}
private Integer[] mImageIds = {
R.drawable.photo1,
R.drawable.photo2,
R.drawable.photo3,
R.drawable.photo4,
R.drawable.photo5,
R.drawable.photo6,
R.drawable.photo7,
R.drawable.photo8
};
}