Android-Gallery[使用C#AndJava实现]

运行效果

C#实现usingAndroid.App;usingAndroid.OS;usingAndroid.Widget;namespaceImageDemo

{

[Activity(Label="@string/applicationName", MainLauncher =true, Icon ="@drawable/icon")]publicclassMainActivity : Activity

{PRivateGallery _gallery;privateImageView _selectedImg;privatereadonlyint[] _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

};protectedoverridevoidOnCreate(Bundle bundle)

{base.OnCreate(bundle);

SetContentView(Resource.Layout.Main);

_gallery= FindViewById<Gallery>(Resource.Id.gallery);

_selectedImg= FindViewById<ImageView>(Resource.Id.currentImg);

_gallery.Adapter=newImageAdapter(this, _imageIds);

_gallery.ItemSelected+=Gallery_ItemSelected;

}privatevoidGallery_ItemSelected(objectsender, AdapterView.ItemSelectedEventArgs e)

{

_selectedImg.SetImageResource(_imageIds[e.Position]);

}

}publicclassImageAdapter : BaseAdapter

{privatereadonlyContext _context;privatereadonlyint[] _imageIds;publicImageAdapter(Context context,int[]imageIds)

{

_context=context;

_imageIds=imageIds;

}publicoverrideObject GetItem(intposition)

{returnnull;

}publicoverridelongGetItemId(intposition)

{return0;

}publicoverrideintCount

{get{return_imageIds.Length; }

}publicoverrideView GetView(intposition, View convertView, ViewGroup parent)

{varimage =newImageView(_context);

image.SetImageResource(_imageIds[position]);

image.LayoutParameters=newGallery.LayoutParams(150,100);

image.SetScaleType(ImageView.ScaleType.FitXy);returnimage;

}

}

}

java实现packagecom.example.halower.gallerydemo;importandroid.content.Context;importandroid.os.Bundle;importandroid.support.v7.app.ActionBarActivity;importandroid.view.View;importandroid.view.ViewGroup;importandroid.widget.AdapterView;importandroid.widget.BaseAdapter;importandroid.widget.Gallery;importandroid.widget.ImageView;importstaticandroid.widget.Gallery.LayoutParams;publicclassMainActivityextendsActionBarActivity {privateint[] 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;

@OverrideprotectedvoidonCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

gallery=(Gallery) findViewById(R.id.gallery);

ImageAdapter adapter=newImageAdapter(this,imageIds);

currentView=(ImageView)findViewById(R.id.currentImg);

gallery.setAdapter(adapter);

gallery.setOnItemSelectedListener(newAdapterView.OnItemSelectedListener(){

@OverridepublicvoidonItemSelected(AdapterView<?> parent, View view,intposition,longid) {

currentView.setImageResource(imageIds[position]);

}

@OverridepublicvoidonNothingSelected(AdapterView<?>parent) {

}

});

}

}classImageAdapterextendsBaseAdapter

{

Context _context;int[] imageIds;publicImageAdapter(Context context,int[] imageIds){

_context=context;this.imageIds=imageIds;

}

@OverridepublicintgetCount() {returnimageIds.length;

}

@OverridepublicObject getItem(intposition) {returnnull;

}

@OverridepubliclonggetItemId(intposition) {return0;

}

@OverridepublicView getView(intposition, View convertView, ViewGroup parent) {

ImageView imageView=newImageView(_context);

imageView.setImageResource(imageIds[position]);

imageView.setScaleType(ImageView.ScaleType.FIT_XY);

imageView.setLayoutParams(newLayoutParams(70,100));returnimageView;

}

}

layout<RelativeLayoutxmlns: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"><ImageViewandroid:layout_width="320dp"android:layout_height="320dp"android:id="@+id/currentImg"android:layout_centerHorizontal="true"/><Galleryandroid: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>