Android零基础入门第50节：StackView卡片堆叠

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

              android:orientation="vertical"

              android:layout_width="match_parent"

              android:layout_height="match_parent">

    <LinearLayout

        android:orientation="horizontal"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:gravity="center_horizontal">

        <Button

            android:id="@+id/prev_btn"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="上一个" />

        <Button

            android:id="@+id/next_btn"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="下一个" />

    </LinearLayout>

    <StackView

        android:id="@+id/stackview"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:loopViews="true" />

</LinearLayout>

package com.jinyu.cqkxzsxy.android.listviewsample.adapter;

import android.content.Context;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.widget.ImageView;

/**

 * @创建者 鑫鱻

 * @描述 Android零基础入门到精通系列教程，欢迎关注微信公众号ShareExpert

 */

public class MyStackAdapter extends BaseAdapter {

    private Context mContext = null;

    private int[] mImageIds = null;

    public MyStackAdapter(Context context, int[] imageIds) {

        this.mContext = context;

        this.mImageIds = imageIds;

    }

    @Override

    public int getCount() {

        return mImageIds.length;

    }

    @Override

    public Object getItem(int position) {

        return position;

    }

    @Override

    public long getItemId(int position) {

        return position;

    }

    // 该方法返回的View代表了每个列表项

    @Override

    public View getView(int position, View convertView, ViewGroup parent) {

        ImageView imageView = null;

        if(null == convertView) {

            // 创建一个ImageView

            imageView = new ImageView(mContext);

            // 设置ImageView的缩放类型

            imageView.setScaleType(ImageView.ScaleType.FIT_XY);

            // 为imageView设置布局参数

            imageView.setLayoutParams(new ViewGroup.LayoutParams(

                    ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT));

            convertView = imageView;

        } else {

            imageView = (ImageView) convertView;

        }

        // 给ImageView设置图片资源

        imageView.setImageResource(mImageIds[position]);

        return imageView;

    }

}

package com.jinyu.cqkxzsxy.android.listviewsample;

import android.os.Bundle;

import android.support.v7.app.AppCompatActivity;

import android.view.View;

import android.widget.Button;

import android.widget.StackView;

import com.jinyu.cqkxzsxy.android.listviewsample.adapter.MyStackAdapter;

public class StackViewActivity extends AppCompatActivity implements View.OnClickListener {

    private StackView mStackView = null;

    private Button mPrevBtn = null;

    private Button mNextBtn = null;

    private int[] mImageIds = {

            R.drawable.image_01, R.drawable.image_02, R.drawable.image_03, R.drawable.image_04,

            R.drawable.image_05, R.drawable.image_06, R.drawable.image_07, R.drawable.image_08

    };

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.stackview_layout);

        // 获取界面组件

        mStackView = (StackView) findViewById(R.id.stackview);

        mPrevBtn = (Button) findViewById(R.id.prev_btn);

        mNextBtn = (Button) findViewById(R.id.next_btn);

        // 为AdapterViewFlipper设置Adapter

        MyStackAdapter adapter = new MyStackAdapter(this, mImageIds);

        mStackView.setAdapter(adapter);

        // 为三个按钮设置点击事件监听器

        mPrevBtn.setOnClickListener(this);

        mNextBtn.setOnClickListener(this);

    }

    @Override

    public void onClick(View view) {

        switch (view.getId()){

            case R.id.prev_btn:

                // 显示上一个组件

                mStackView.showPrevious();

                break;

            case R.id.next_btn:

                // 显示下一个组件

                mStackView.showNext();

                break;

            default:

                break;

        }

    }

}