Android的GridView控件用于把一系列的空间组织成一个二维的网格显示出来应用的比较多的就是组合图片显示下面我就详细讲一个例子
首先写一个类继承BaseAdapter
1. Java代码
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package
com.yarin.android.Examples_04_19;
import
android.content.Context;
import
android.view.View;
import
android.view.ViewGroup;
import
android.widget.BaseAdapter;
import
android.widget.GridView;
import
android.widget.ImageView;
public
class
ImageAdapter
extends
BaseAdapter
{
// 定义Context
private
Context mContext;
// 定义整型数组 即图片源
private
Integer[] mImageIds =
{
R.drawable.img1,
R.drawable.img2,
R.drawable.img3,
R.drawable.img4,
R.drawable.img5,
R.drawable.img6,
R.drawable.img7,
R.drawable.img8,
R.drawable.img1,
};
public
ImageAdapter(Context c)
{
mContext = c;
}
// 获取图片的个数
public
int
getCount()
{
return
mImageIds.length;
}
// 获取图片在库中的位置
public
Object getItem(
int
position)
{
return
position;
}
// 获取图片ID
public
long
getItemId(
int
position)
{
return
position;
}
public
View getView(
int
position, View convertView, ViewGroup parent)
{
ImageView imageView;
if
(convertView ==
null
)
{
// 给ImageView设置资源
imageView =
new
ImageView(mContext);
// 设置布局 图片120×120显示
imageView.setLayoutParams(
new
GridView.LayoutParams(
85
,
85
));
// 设置显示比例类型
imageView.setScaleType(ImageView.ScaleType.FIT_CENTER);
}
else
{
imageView = (ImageView) convertView;
}
imageView.setImageResource(mImageIds[position]);
return
imageView;
}
}
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2. Java代码 悦德财富：https://www.yuedecaifu.com
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package
com.yarin.android.Examples_04_19;
import
android.app.Activity;
import
android.os.Bundle;
import
android.view.View;
import
android.widget.AdapterView;
import
android.widget.GridView;
import
android.widget.Toast;
import
android.widget.AdapterView.OnItemClickListener;
public
class
Activity01
extends
Activity
{
/** Called when the activity is first created. */
@Override
public
void
onCreate(Bundle savedInstanceState)
{
super
.onCreate(savedInstanceState);
setContentView(R.layout.main);
//取得GridView对象
GridView gridview = (GridView) findViewById(R.id.gridview);
//添加元素给gridview
gridview.setAdapter(
new
ImageAdapter(
this
));
// 设置Gallery的背景
gridview.setBackgroundResource(R.drawable.bg0);
//事件监听
gridview.setOnItemClickListener(
new
OnItemClickListener() {
public
void
onItemClick(AdapterView<?> parent, View v,
int
position,
long
id)
{
Toast.makeText(Activity01.
this
,
"你选择了"
+ (position +
1
) +
" 号图片"
, Toast.LENGTH_SHORT).show();
}
});
}
}
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3. XML代码
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<?
xml
version
=
"1.0"
encoding
=
"utf-8"
?>
<
GridView
xmlns:android
=
"http://schemas.android.com/apk/res/android"
android:id
=
"@+id/gridview"
android:layout_width
=
"fill_parent"
android:layout_height
=
"fill_parent"
android:numColumns
=
"auto_fit"
android:verticalSpacing
=
"10dp"
android:horizontalSpacing
=
"10dp"
android:columnWidth
=
"90dp"
android:stretchMode
=
"columnWidth"
android:gravity
=
"center"
/>
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