ImageSwitcher的使用.doc

三、完整代码1.布局文件 2.Java代码package wjq.WidgetDemo;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.ImageSwitcher;import android.widget.ImageView;import android.widget.AdapterView.OnItemClickListener;import android.widget.AdapterView.OnItemSelectedListener;import android.widget.Gallery.LayoutParams;import android.widget.ViewSwitcher.ViewFactory;public class ImageSwitcherDemo extends Activity implements OnItemSelectedListener, ViewFactory private ImageSwitcher is; private Gallery gallery; private Integer mThumbIds = R.drawable.b, R.drawable.c, R.drawable.d, R.drawable.f, R.drawable.g, ; private Integer mImageIds = R.drawable.b, R.drawable.c, R.drawable.d, R.drawable.f, R.drawable.g, ; /* * (non-Javadoc) * * see android.app.Activity#onCreate(android.os.Bundle) */ Override protected void onCreate(Bundle savedInstanceState) / TODO Auto-generated method stub super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.imageswitcherpage); is = (ImageSwitcher) findViewById(R.id.switcher); is.setFactory(this); is.setInAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_in); is.setOutAnimation(AnimationUtils.loadAnimation(this, android.R.anim.fade_out); gallery = (Gallery) findViewById(R.id.gallery); gallery.setAdapter(new ImageAdapter(this); gallery.setOnItemSelectedListener(this); Override public View makeView() ImageView i = new ImageView(this); i.setBackgroundColor(0xFF000000); i.setScaleType(ImageView.ScaleType.FIT_CENTER); i.setLayoutParams(new ImageSwitcher.LayoutParams( LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT); return i; public class ImageAdapter extends BaseAdapter public ImageAdapter(Context c) mContext = c; public int getCount() return mThumbIds.length; public Object getItem(int position) return position; public long getItemId(int position) return position; public View getView(int position, View convertView, ViewGroup parent) ImageView i = new ImageView(mContext); i.setImageResource(mThumbIdsposition); i.setAdjustViewBounds(true); i.setLayoutParams(new Gallery.LayoutParams( LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT); i.setBackgroundResource(R.drawable.e); return i; private Context mContext; Override public void onItemSelected(AdapterView parent, View view, int position, long id