Android-Gallery[使用C#AndJava实现]

using Android.App;using Android.OS;using Android.Widget;namespace ImageDemo{    [Activity(Label = "@string/applicationName", MainLauncher = true, Icon = "@drawable/icon")]    public class MainActivity : Activity    {        PRivate Gallery _gallery;        private ImageView _selectedImg;        private readonly int[] _imageIds = {            Resource.Drawable.test1,            Resource.Drawable.test2,            Resource.Drawable.test3,            Resource.Drawable.test4,            Resource.Drawable.test5,            Resource.Drawable.test6,            Resource.Drawable.test7,            Resource.Drawable.test8    };        protected override void OnCreate(Bundle bundle)        {            base.OnCreate(bundle);            SetContentView(Resource.Layout.Main);            _gallery = FindViewById<Gallery>(Resource.Id.gallery);            _selectedImg = FindViewById<ImageView>(Resource.Id.currentImg);            _gallery.Adapter = new ImageAdapter(this, _imageIds);            _gallery.ItemSelected += Gallery_ItemSelected;        }        private void Gallery_ItemSelected(object sender, AdapterView.ItemSelectedEventArgs e)        {            _selectedImg.SetImageResource(_imageIds[e.Position]);        }    }public class ImageAdapter : BaseAdapter    {        private readonly Context _context;        private readonly int[] _imageIds;        public ImageAdapter(Context context,int[]imageIds)        {            _context = context;            _imageIds = imageIds;        }        public override Object GetItem(int position)        {            return null;        }        public override long GetItemId(int position)        {            return 0;        }        public override int Count        {            get { return _imageIds.Length; }        }        public override View GetView(int position, View convertView, ViewGroup parent)        {            var image = new ImageView(_context);            image.SetImageResource(_imageIds[position]);            image.LayoutParameters = new Gallery.LayoutParams(150, 100);            image.SetScaleType(ImageView.ScaleType.FitXy);            return image;        }    }}

package com.example.halower.gallerydemo;import android.content.Context;import android.os.Bundle;import android.support.v7.app.ActionBarActivity;import android.view.View;import android.view.ViewGroup;import android.widget.AdapterView;import android.widget.BaseAdapter;import android.widget.Gallery;import android.widget.ImageView;import static android.widget.Gallery.LayoutParams;public class MainActivity extends ActionBarActivity {    private int[] imageIds = {            R.drawable.test1,            R.drawable.test2,            R.drawable.test3,            R.drawable.test4,            R.drawable.test5,            R.drawable.test6,            R.drawable.test7,            R.drawable.test8    };    Gallery gallery;    ImageView currentView;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        gallery=(Gallery) findViewById(R.id.gallery);        ImageAdapter adapter=new ImageAdapter(this,imageIds);        currentView = (ImageView)findViewById(R.id.currentImg);        gallery.setAdapter(adapter);        gallery.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener(){            @Override            public void onItemSelected(AdapterView<?> parent, View view, int position,long id) {                currentView.setImageResource(imageIds[position]);            }            @Override            public void onNothingSelected(AdapterView<?> parent) {            }        });    }}class  ImageAdapter extends BaseAdapter{    Context _context;    int[] imageIds;    public ImageAdapter(Context context,int[] imageIds){        _context=context;        this.imageIds=imageIds;    }    @Override    public int getCount() {        return imageIds.length;    }    @Override    public Object getItem(int position) {        return null;    }    @Override    public long getItemId(int position) {        return 0;    }    @Override    public View getView(int position, View convertView, ViewGroup parent) {        ImageView imageView=new ImageView(_context);        imageView.setImageResource(imageIds[position]);        imageView.setScaleType(ImageView.ScaleType.FIT_XY);        imageView.setLayoutParams(new LayoutParams(70,100));        return imageView;    }}

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"    android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity">    <ImageView        android:layout_width="320dp"        android:layout_height="320dp"        android:id="@+id/currentImg"        android:layout_centerHorizontal="true" />    <Gallery        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:unselectedAlpha="0.6"        android:spacing="2pt"        android:layout_below="@+id/currentImg"        android:id="@+id/gallery" /></RelativeLayout>