android---图片切换
1、布局
<?xmlversion="1.0"encoding="utf-8"?>
<RelativeLayoutxmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical">
<ImageSwitcher
android:id="@+id/imageswitcher"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true">
</ImageSwitcher>
<Gallery
android:id="@+id/gallery"
android:layout_width="fill_parent"
android:layout_height="60dp"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:background="#55000000"
android:gravity="center_vertical"
android:spacing="16dp"/>
</RelativeLayout>
2、Activity
importandroid.app.Activity;
importandroid.os.Bundle;
importandroid.view.View;
importandroid.view.Window;
importandroid.view.ViewGroup.LayoutParams;
importandroid.view.animation.AnimationUtils;
importandroid.widget.AdapterView;
importandroid.widget.Gallery;
importandroid.widget.ImageSwitcher;
importandroid.widget.ImageView;
importandroid.widget.AdapterView.OnItemSelectedListener;
importandroid.widget.ViewSwitcher.ViewFactory;
publicclassImageActivityextendsActivityimplementsViewFactory{
privateImageSwitcherimageSwitcher;
privateGallerygallery;
@Override
protectedvoidonCreate(BundlesavedInstanceState){
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.imagelayout);
imageSwitcher=(ImageSwitcher)findViewById(R.id.imageswitcher);
imageSwitcher.setFactory(this);
imageSwitcher.setInAnimation(AnimationUtils.loadAnimation(this,
android.R.anim.fade_in));
imageSwitcher.setOutAnimation(AnimationUtils.loadAnimation(this,
android.R.anim.fade_out));
gallery=(Gallery)findViewById(R.id.gallery);
ImageAdapterimageAdapter=newImageAdapter(this);
gallery.setAdapter(imageAdapter);
gallery.setOnItemSelectedListener(newOnItemSelectedListener(){
@Override
publicvoidonItemSelected(AdapterView<?>arg0,Viewarg1,
intindex,longarg3){
imageSwitcher.setImageResource(ConstData.imageId[index]);
}
@Override
publicvoidonNothingSelected(AdapterView<?>arg0){
}
});
}
@Override
publicViewmakeView(){
ImageViewi=newImageView(this);
i.setBackgroundColor(0xFF000000);
i.setScaleType(ImageView.ScaleType.FIT_CENTER);
i.setLayoutParams(newImageSwitcher.LayoutParams(
LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT));
returni;
}
}
3、Adapter
importandroid.view.View;
importandroid.view.ViewGroup;
importandroid.view.ViewGroup.LayoutParams;
importandroid.widget.BaseAdapter;
importandroid.widget.Gallery;
importandroid.widget.ImageView;
publicclassImageAdapterextendsBaseAdapter{
privateImageActivityimageActivity;
publicImageAdapter(ImageActivityimageActivity){
this.imageActivity=imageActivity;
}
@Override
publicintgetCount(){
//TODOAuto-generatedmethodstub
returnConstData.imageId.length;
}
@Override
publicObjectgetItem(inti){
//TODOAuto-generatedmethodstub
returni;
}
@Override
publiclonggetItemId(inti){
//TODOAuto-generatedmethodstub
returni;
}
@Override
publicViewgetView(inti,Viewview,ViewGroupviewgroup){
ImageViewimageView=null;
imageView=newImageView(imageActivity);
imageView.setLayoutParams(newGallery.LayoutParams(
LayoutParams.WRAP_CONTENT,LayoutParams.WRAP_CONTENT));
imageView.setAdjustViewBounds(true);
imageView.setImageResource(ConstData.imageId[i]);
returnimageView;
}
}