ImageView加ImageSwitch制作图片浏览器

Main

/*
* 图片浏览器
*/
public class MainActivity extends Activity implements ViewFactory{
private Gallery gallery;
private ImageSwitcher imageSwitcher;
private int[] imageid = new int[]{R.drawable.ic_launcher,R.drawable.ic_launcher,R.drawable.ic_launcher,R.drawable.ic_launcher,R.drawable.ic_launcher,R.drawable.ic_launcher,R.drawable.ic_launcher,R.drawable.ic_launcher,R.drawable.ic_launcher};
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        gallery =(Gallery) findViewById(R.id.gallery1);
        imageSwitcher =(ImageSwitcher) findViewById(R.id.imageSwitcher);
        GalleryAdapter galleryAdapter = new GalleryAdapter( this, imageid);
        gallery.setAdapter(galleryAdapter);
        imageSwitcher.setFactory( this);
        //设置进入出去动画
        imageSwitcher.setInAnimation(AnimationUtils.loadAnimation( this, android.R.anim.fade_in));
        imageSwitcher.setOutAnimation(AnimationUtils.loadAnimation( this, android.R.anim.fade_out));
 
        gallery.setOnItemClickListener( new OnItemClickListener() {
 
            @Override
            public void onItemClick(AdapterView < ? > parent, View view,
                    int position, long id) {
                //position从1开始
                imageSwitcher.setImageResource(imageid[position %imageid.length]);
            }
 
        });
    }
    @Override
    public View makeView() {
        ImageView imageView = new ImageView( this);
        //设置imageswitch背景色
        imageView.setBackgroundColor(0xFF000000);
        imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);
        return imageView;
    }
}

 

Adapter

 

public class GalleryAdapter extends BaseAdapter{
    private Context context;
    private int[] imageid;
    int mGalleryItemBackground;
public GalleryAdapter(Context context, int[] imageid) {
    this.context =context;
    this.imageid =imageid;
    //图像的显示风格
    TypedArray typedArray = context.obtainStyledAttributes(R.styleable.Gallery);
    mGalleryItemBackground = typedArray.getResourceId(
            R.styleable.Gallery_android_galleryItemBackground, 0);
}
    @Override
    public int getCount() {
        return Integer.MAX_VALUE;
    }
 
    @Override
    public Object getItem( int position) {
        return imageid[position];
    }
 
    @Override
    public long getItemId( int position) {
        return position;
    }
 
    @Override
    public View getView( int position, View convertView, ViewGroup parent) {
        ImageView imageView = new ImageView(context);
        imageView.setImageResource(imageid[position %imageid.length]);
        imageView.setBackgroundResource(mGalleryItemBackground);
        return imageView;
    }
 
}

 

res/values/attrs.xml

 

<?xml version= "1.0" encoding= "utf-8"?>
<resources>
    < declare-styleable name= "Gallery">
        <attr name= "android:galleryItemBackground" />
    </ declare-styleable>
</resources>

 

实现gallery无限循环,点击item,在imageswitch显示图片

来自为知笔记(Wiz)