安卓学习第18课——AdapterViewFlipper

<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" >

    <AdapterViewFlipper
        android:id="@+id/flipper"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:flipInterval="5000"
        android:layout_alignParentTop="true" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentLeft="true"
        android:onClick="prev"
        android:text="上一个" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_centerHorizontal="true"
        android:onClick="next"
        android:text="下一个" />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_alignParentRight="true"
        android:onClick="auto"
        android:text="自动播放" />
    
</RelativeLayout>

package com.example.adapterviewfilipper;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewGroup.LayoutParams;
import android.widget.AdapterViewFlipper;
import android.widget.BaseAdapter;
import android.widget.ImageView;

public class MainActivity extends Activity {

    int[] imageIds=new int[]{
            R.drawable.shuangzi,R.drawable.shuangyu,R.drawable.chunv,
            R.drawable.tiancheng,R.drawable.tianxie,R.drawable.sheshou,R.drawable.juxie,
            R.drawable.shuiping,R.drawable.shizi,R.drawable.baiyang,R.drawable.jinniu,R.drawable.mojie
        };
    AdapterViewFlipper flipper;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        flipper=(AdapterViewFlipper) findViewById(R.id.flipper);
        BaseAdapter adapter=new BaseAdapter(){

            @Override
            public int getCount() {
                return imageIds.length;
            }

            @Override
            public Object getItem(int position) {
                return position;
            }

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

            @Override
            public View getView(int position, View convertView, ViewGroup parent) {
                ImageView imageView=new ImageView(MainActivity.this);
                imageView.setImageResource(imageIds[position]);
                imageView.setScaleType(ImageView.ScaleType.FIT_XY);
                imageView.setLayoutParams(new LayoutParams(LayoutParams.MATCH_PARENT,LayoutParams.MATCH_PARENT));
                return imageView;
            }
            
        };
        flipper.setAdapter(adapter);
    }
    public void prev(View source){
        flipper.showPrevious();
        flipper.stopFlipping();
    }
    public void next(View source){
        flipper.showNext();
        flipper.stopFlipping();
    }
    
    public void auto(View source){
        flipper.startFlipping();
    }

}