为GridView添加边框效果，供大家参考，具体内容如下

1.自定义GridView的item样式：

grid_item.xml文件

android:layout_width="wrap_content"

android:layout_height="wrap_content" >

android:id="@+id/item_image"

android:layout_width="115dp"

android:layout_height="115dp"

android:padding="8dp"

android:background="@drawable/grid_selector"

/>

2.设置GridView item的背景：

grid_selector.xml文件

android:drawable="@drawable/grid_normal" />

android:drawable="@drawable/grid_pressed" />

android:drawable="@drawable/grid_pressed" />

3.设置GridView的listSelector为透明：

android:listSelector="@android:color/transparent"

4.自定义GridView的adapter：

import java.util.ArrayList;

import android.content.Context;

import android.graphics.drawable.Drawable;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.widget.ImageView;

public class GridAdapter extends BaseAdapter {

private Context mContext = null;

private LayoutInflater inflater = null;

private ArrayList drawableList = null;

public GridAdapter(Context c) {

this.mContext = c;

this.inflater = LayoutInflater.from(mContext);

}

public void setDataSource(ArrayList list){

this.drawableList = list;

}

public int getCount() {

if(drawableList != null){

return drawableList.size();

}else{

return 0;

}

}

public Object getItem(int position) {

return drawableList.get(position);

}

public long getItemId(int position) {

return position;

}

public View getView(int position, View convertView, ViewGroup parent) {

ImageView imageView = new ImageView(mContext);

if (convertView == null) {

convertView = inflater.inflate(R.layout.grid_item, null);

imageView = (ImageView) convertView.findViewById(R.id.item_image);

imageView.setScaleType(ImageView.ScaleType.CENTER_INSIDE);

convertView.setTag(imageView);

} else {

imageView = (ImageView) convertView.getTag();

}

imageView.setImageDrawable(drawableList.get(position));

return convertView;

}

}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持找一找教程网。