安卓高级控件3之Gallery(画廊)

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Gallery是一种过时的高级控件

用Gallery实现了图片的切换，其效果图如下：

XML代码如下：

<?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">    <Gallery        android:layout_width="match_parent"        android:layout_height="match_parent"        android:id="@+id/g_gallery_image"></Gallery></LinearLayout>

JAVA代码如下：

public class GalleryActivity extends AppCompatActivity {    private Gallery g_gallery_image;    private int images[]={R.drawable.one,R.drawable.two,R.drawable.three,R.drawable.four,R.drawable.five,R.drawable.six,R.drawable.seven};    @Override    protected void onCreate(@Nullable Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.galleryactivity);        g_gallery_image = (Gallery) findViewById(R.id.g_gallery_image);        g_gallery_image.setAdapter(new MyAdapter());    }    class MyAdapter extends BaseAdapter{        @Override        public int getCount() {            return images.length;        }        @Override        public Object getItem(int position) {            return images[position];        }        @Override        public long getItemId(int position) {            return position;        }        @Override        public View getView(int position, View convertView, ViewGroup parent) {            ImageView imageView=new ImageView(GalleryActivity.this);            //给imageview设置宽和高            Gallery.LayoutParams layoutParams=new Gallery.LayoutParams(600,600);            imageView.setLayoutParams(layoutParams);            imageView.setImageResource(images[position]);            return imageView;        }    }}

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