【Android】GridView添加网格线

GridView网格布局，默认情况下是没有网格线的

查找网上资料，找到了一种为GridView添加网格线的小技巧

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实际上，该网格线是通过设置GridView各子项的间隔，并分别设置GridView背景色与子项背景色实现的。

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实现方法

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设置GridView背景色，设置水平间方向间隔属性值android:horizontalSpacing和竖直方向间隔属性值android:verticalSpacing设置GridView子项背景色

示例代码：main.xml

<?xml version="1.0" encoding="utf-8"?><GridView xmlns:android="http://schemas.android.com/apk/res/android"    android:id="@+id/main_GridView"    android:horizontalSpacing="1dp"    android:verticalSpacing="1dp"    android:stretchMode="columnWidth"    android:numColumns="3"    android:gravity="center"    android:listSelector="@null"    android:background="#DCDCDC"    android:layout_width="fill_parent"    android:layout_height="fill_parent"></GridView>

Main.java

package dyingbleed.iteye;import android.app.Activity;import android.content.Context;import android.graphics.Color;import android.os.Bundle;import android.view.Gravity;import android.view.View;import android.view.ViewGroup;import android.view.ViewGroup.LayoutParams;import android.widget.AbsListView;import android.widget.BaseAdapter;import android.widget.GridView;import android.widget.TextView;public class Main extends Activity {private GridView grid;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);                grid = (GridView) findViewById(R.id.main_GridView);        grid.setAdapter(new GridViewAdapter(this));    }        private class GridViewAdapter extends BaseAdapter {        private Context context;        public GridViewAdapter(Context context) {    this.context = context;    }        int count = 100;@Overridepublic int getCount() {return count;}@Overridepublic Object getItem(int position) {return position;}@Overridepublic long getItemId(int position) {return position;}@Overridepublic View getView(int position, View convertView, ViewGroup parent) {TextView result = new TextView(context);result.setText("Item "+position);result.setTextColor(Color.BLACK);result.setTextSize(24);result.setLayoutParams(new AbsListView.LayoutParams(new LayoutParams(LayoutParams.FILL_PARENT, LayoutParams.WRAP_CONTENT)));result.setGravity(Gravity.CENTER);result.setBackgroundColor(Color.WHITE); //设置背景颜色return result;}        }}

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