Android 用Gallery和ImageSwicher实现画廊效果，展示图片+完整源代码

ImageAdapter适配器类的代码：

package com.example.glallery;

import android.content.Context;
import android.view.ContextMenu;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;

/**
 * Created by 联想 on 2016/7/5.
 */
public class ImageAdapter extends BaseAdapter{
private int[]res;
    private Context context;
    public ImageAdapter(int[]res,Context context){
this.res = res;
        this.context = context;
    }
@Override
    public int getCount() {
return Integer.MAX_VALUE;
    }

@Override
    public Object getItem(int i) {
return res[i];
    }

@Override
    public long getItemId(int i) {
return i;
    }

@Override
    public View getView(int i, View view, ViewGroup viewGroup) {
        ImageView image = new ImageView(context);
        image.setBackgroundResource(res[i%res.length]);

        image.setLayoutParams(new Gallery.LayoutParams(200,150));
        image.setScaleType(ImageView.ScaleType.FIT_XY);

        return image;
    }
}

MainActivity代码：

package com.example.glallery;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.view.animation.Animation;
import android.view.animation.AnimationUtils;
import android.widget.AdapterView;
import android.widget.Gallery;
import android.widget.ImageSwitcher;
import android.widget.ImageView;
import android.widget.ViewSwitcher;

public class MainActivity extends AppCompatActivity implements AdapterView.OnItemSelectedListener, ViewSwitcher.ViewFactory {
private Gallery mGallery;
    private ImageAdapter iA;
    private ImageSwitcher imageSwitcher;


    //数据源
    private int[]res = {
            R.mipmap.item1,
            R.mipmap.item2,
            R.mipmap.item3,
            R.mipmap.item4,
            R.mipmap.item5,
            R.mipmap.item6,
            R.mipmap.item7,
            R.mipmap.item8,
            R.mipmap.item9,
            R.mipmap.item10,
            R.mipmap.item11,
            R.mipmap.item12
 };
    @Override
    protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mGallery = (Gallery) findViewById(R.id.gallery);

        iA = new ImageAdapter(res,this);
        mGallery.setAdapter(iA);

        mGallery.setOnItemSelectedListener(this);


        imageSwitcher = (ImageSwitcher) findViewById(R.id.is);
        imageSwitcher.setFactory(this);
        imageSwitcher.setInAnimation(AnimationUtils.loadAnimation(this,android.R.anim.fade_in));
        imageSwitcher.setOutAnimation(AnimationUtils.loadAnimation(this,android.R.anim.fade_out));

    }

@Override
    public void onItemSelected(AdapterView<?> adapterView, View view, int i, long l) {

// image.setBackgroundResource(res[i%res.length]);
        imageSwitcher.setBackgroundResource(res[i% res.length]);
    }

@Override
    public void onNothingSelected(AdapterView<?> adapterView) {

    }

@Override
    public View makeView() {

        ImageView image = new ImageView(this);
        image.setScaleType(ImageView.ScaleType.FIT_CENTER);
        return image;
    }
}

activity_main的布局文件：

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    android:orientation="vertical"
    tools:context="com.example.glallery.MainActivity">

    <Gallery
        android:id="@+id/gallery"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

    </Gallery>
    <ImageSwitcher
        android:id="@+id/is"
        android:layout_width="match_parent"
        android:layout_height="wrap_content">

    </ImageSwitcher>

</LinearLayout>