Android学习记录使用Gallery实现炫丽的拖动效果是用Android Gallery组建 ，对图片实现拖拽效果 首先在layou
Android学习记录使用Gallery实现炫丽的拖动效果
是用Android Gallery组建 ，对图片实现拖拽效果 首先在layout文件中拖入Grallery图片显示的组建
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
??? android:orientation="vertical"
??? android:layout_width="fill_parent"
??? android:layout_height="fill_parent"
??? >
??? <Gallery android:id="@+id/Gallery01"
??? ??? android:layout_width="wrap_content"
??? ??? android:layout_height="wrap_content">
??? </Gallery>
</LinearLayout>
?
Activity视图代码如下
Toast.LENGTH_SHORT).show();
return false;
}
});
}
}
?代码主要是取得Gallery组建，设置了Gallery组建的Adapter和背景图片显示,
g.setAdapter(new ImageAdapter(this));用了自定义适配器，继承自BaseAdapter
ImageAdapter.java package com.study.galleryTest;
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;
public class ImageAdapter extends BaseAdapter {
private Context context;
public ImageAdapter(Context c){
this.context = c;
}
//设置图片源-->整型数组
private Integer[] images =
{
R.drawable.android_001,
R.drawable.android_002,
R.drawable.android_003,
R.drawable.android_004,
R.drawable.android_005,
R.drawable.android_006,
R.drawable.android_007,
R.drawable.android_008,
R.drawable.android_009,
};
//获得图片个数
@Override
public int getCount() {
return images.length;
}
//获取图片在库中的位置
@Override
public Object getItem(int position) {
return position;
}
//获取图片在库中的位置
@Override
public long getItemId(int position) {
return position;
}
//获得单个的ImageView
@Override
public View getView(int position, View view, ViewGroup viewGroup) {
ImageView imageView = new ImageView(context);
imageView.setImageResource(images[position]);
imageView.setLayoutParams(new Gallery.LayoutParams(85,85));
imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);
return imageView;
}
}
?
