Gallery效果

MainActivity

 1 package gallerydemo.example.administrator.gallerydemo;
 2 
 3 import android.support.v7.app.AppCompatActivity;
 4 import android.os.Bundle;
 5 import android.view.View;
 6 import android.view.animation.Animation;
 7 import android.view.animation.AnimationUtils;
 8 import android.widget.AdapterView;
 9 import android.widget.Gallery;
10 import android.widget.ImageSwitcher;
11 import android.widget.ImageView;
12 import android.widget.ViewSwitcher;
13 
14 public class MainActivity extends AppCompatActivity implements AdapterView.OnItemSelectedListener,ViewSwitcher.ViewFactory{
15 int []res={R.drawable.item1,R.drawable.item2,R.drawable.item3,R.drawable.item4,R.drawable.item5,R.drawable.item6,R.drawable.item7,R.drawable.item8,R.drawable.item9};
16     private Gallery gallery;
17     private ImageAdapter imageAdapter;
18     private ImageSwitcher imageSwitcher;
19     @Override
20     protected void onCreate(Bundle savedInstanceState) {
21         super.onCreate(savedInstanceState);
22         setContentView(R.layout.main);
23         gallery= (Gallery) findViewById(R.id.gallery);
24         imageAdapter=new ImageAdapter(res,this);
25         gallery.setAdapter(imageAdapter);
26         gallery.setOnItemSelectedListener(this);
27         imageSwitcher= (ImageSwitcher) findViewById(R.id.image);
28         imageSwitcher.setFactory(this);
29         imageSwitcher.setInAnimation(AnimationUtils.loadAnimation(this,android.R.anim.fade_in));/*Android自定义淡入动画*/
30         imageSwitcher.setOutAnimation(AnimationUtils.loadAnimation(this,android.R.anim.fade_out));
31     }
32 
33     @Override
34     public void onItemSelected(AdapterView<?> parent, View view, int position, long id) {
35 
36         imageSwitcher.setBackgroundResource(res[position%res.length]);
37     }
38 
39     @Override
40     public void onNothingSelected(AdapterView<?> parent) {
41 
42     }
43 
44     @Override
45     public View makeView() {
46         ImageView imageView=new ImageView(this);
47         imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);/*图片按等比例拉伸*/
48         return imageView;
49     }
50 }

ImageAdapter

 1 package gallerydemo.example.administrator.gallerydemo;
 2 
 3 import android.content.Context;
 4 import android.util.Log;
 5 import android.view.View;
 6 import android.view.ViewGroup;
 7 import android.widget.BaseAdapter;
 8 import android.widget.Gallery;
 9 import android.widget.ImageView;
10 
11 /**
12  * Created by Administrator on 2016/5/9.
13  */
14 public class ImageAdapter extends BaseAdapter {
15     private int[] res;
16     private Context context;
17     public ImageAdapter(int[] res,Context context){
18         this.context=context;
19         this.res=res;
20     }
21     @Override
22     public int getCount() {
23         return Integer.MAX_VALUE;
24     }
25 
26     @Override
27     public Object getItem(int position) {
28         return res[position];
29     }
30 
31     @Override
32     public long getItemId(int position) {
33         return position;
34     }
35 
36     @Override
37     public View getView(int position, View convertView, ViewGroup parent) {
38         ImageView imageView=new ImageView(context);
39         Log.i("Main","position"+position+","+"position%res.length"+position%res.length);
40         imageView.setBackgroundResource(res[position%res.length]);/*设置图片轮流播放*/
41         imageView.setLayoutParams(new Gallery.LayoutParams(400,300));/*设置imageView的缩放，长400，宽300*/
42 
43         imageView.setScaleType(ImageView.ScaleType.FIT_XY);
44         return imageView;
45     }
46 }

main.xml

 1 <?xml version="1.0" encoding="utf-8"?>
 2 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 3     android:orientation="vertical" android:layout_width="match_parent"
 4     android:layout_height="match_parent">
 5 <Gallery
 6     android:layout_width="match_parent"
 7     android:layout_height="wrap_content"
 8     android:id="@+id/gallery"></Gallery>
 9     <ImageSwitcher
10         android:layout_width="match_parent"
11         android:layout_height="wrap_content"
12         android:id="@+id/image"></ImageSwitcher>
13 </LinearLayout>

 

posted @ 2016-05-09 11:00  成功人土  阅读(242)  评论(0)    收藏  举报