如何在Android中减少网格视图的行和列大小？

Question

在我的应用程序中，我使用了网格视图，并且在每个网格中都有一个图像。 现在我的问题是网格之间的间距很高。 我想减少网格之间的空间。 请帮我。

在我使用过的xml布局中

android:verticalSpacing="10dp" 
android:horizontalSpacing="10dp"

现在我在Xml中的每个图像周围都有一个矩形

我的XML为gridview。

<GridView 
   android:id="@+id/gridview"
   android:layout_width="wrap_content" 
   android:layout_height="wrap_content"
   android:verticalSpacing="10dp" 
   android:horizontalSpacing="10dp"
   android:gravity="center"/>

活动：

public class MainActivity extends Activity {
GridView grid;
RelativeLayout r1;
int maxrows, maxcol;
ArrayList<LayoutData> data = new ArrayList<LayoutData>();
 ArrayList<HashMap<String, String>> sheetdetails = new ArrayList<HashMap<String, String>>();    
@Override   
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    grid=(GridView)findViewById(R.id.gridview);

    new GetRoute().execute("http://sb2.reloadit.in/TravelServices.asmx/Getlayout");

   }

 private class GetRoute extends AsyncTask<String, Void, JSONObject> {
        /*String mJourneyDate;
        public GetData(String pJourneyDate) {
            this.mJourneyDate = pJourneyDate;
        }*/ProgressDialog pd = null;
            @Override
            protected void onPreExecute() {
                super.onPreExecute();

                pd = ProgressDialog.show(MainActivity.this, "", "Loading...", true);
            }

            @Override
            protected JSONObject doInBackground(String... params) {
                String response;

                try {
                    HttpClient httpclient = new DefaultHttpClient();
                    HttpPost httppost = new HttpPost(params[0]);
                    List<NameValuePair> nameValuePair = new ArrayList<NameValuePair>(2);
                     nameValuePair.add(new BasicNameValuePair("RouteScheduleID","434145405"));

                     nameValuePair.add(new BasicNameValuePair("JourneyDate","2014-12-18"));


                     httppost.setEntity(new UrlEncodedFormEntity(nameValuePair));
                    HttpResponse responce = httpclient.execute(httppost);

                    HttpEntity httpEntity = responce.getEntity();

                    response = EntityUtils.toString(httpEntity);
                    Log.d("response is", response);

                    return new JSONObject(response);

                } catch (Exception ex) {

                    ex.printStackTrace();

                }

                return null;
            }

            @Override
            protected void onPostExecute(JSONObject result) 
            {
                super.onPostExecute(result);
                //Log.v("TAG_RESULTadapter",""+result);

                pd.dismiss();
                if(result != null)
                {
                    try
                    {


                        JSONObject jobj = result.getJSONObject("Response");
                        String message = jobj.getString("Message");
                        String issuceess = jobj.getString("IsSuccess");

                        if(issuceess.equals("true"))
                        {

                            JSONObject layout = result.getJSONObject("Layout");  
                            // Log.v("TAG_routearray",""+layoutarray);
                              maxrows=layout.getInt("MaxRows");

                              maxcol=layout.getInt("MaxColumns");
                              grid.setNumColumns(maxcol);


                                JSONArray routearray = layout.getJSONArray("SeatDetails");
                                for (int i = 0; i < routearray.length(); i++) {

                                 String Row = routearray.getJSONObject(i).getString("Row");
                             // Log.v("TAG_routearray",""+Row);
                                 String Col = routearray.getJSONObject(i).getString("Col");
                                 String Height = routearray.getJSONObject(i).getString("Height");
                              String  Width = routearray.getJSONObject(i).getString("Width");
                                 String SeatNo = routearray.getJSONObject(i).getString("SeatNo");
                              String Gender = routearray.getJSONObject(i).getString("Gender");

                                     String Deck = routearray.getJSONObject(i).getString("Deck");
                                     String IsAvailable = routearray.getJSONObject(i).getString("IsAvailable");
                                  String  Fare = routearray.getJSONObject(i).getString("Fare");
                                   LayoutData ld= new LayoutData();
                                    ld.setRow(Row);
                                    ld.setCol(Col);
                                    ld.setHeight(Height);
                                    ld.setWidth(Width);
                                    ld.setSeatno(SeatNo);
                                    ld.setGender(Gender);
                                    ld.setDeck(Deck);
                                    ld.setIsavailable(IsAvailable);
                                    ld.setFare(Fare);
                                    data.add(ld);



                                 Log.v("TAG_Maxfare",""+Fare);
                                 HashMap<String, String> map = new HashMap<String, String>();
                                 map.put("Row", Row);
                                 map.put("Col", Col);
                                 map.put("Height", Height);
                                 map.put("Width", Width);
                                 map.put("SeatNo", SeatNo);
                                 map.put("Deck", Deck);
                                 map.put("IsAvailable", IsAvailable);
                                 if(SeatNo.equalsIgnoreCase("")){
                                     map.put("seat_img", ""+R.drawable.noseat);
                                    }
                                 else{
                                      if(IsAvailable.equalsIgnoreCase("false")){
                                          map.put("seat_img", ""+R.drawable.seatgreen);
                                      }
                                     /* if(IsAvailable.equalsIgnoreCase("false")){
                                          map.put("seat_img", ""+R.drawable.seatgreen);
                                      }*/else if(IsAvailable.equalsIgnoreCase("true")){
                                          map.put("seat_img", ""+R.drawable.seat);
                                      }
                                    }
                                 map.put("Fare", Fare);
                                 sheetdetails.add(map);

                                }
                                CustomGrid adapter = new CustomGrid(MainActivity.this, sheetdetails);
                                grid.setAdapter(adapter);

                        }
                    }


                    catch (Exception e) 
                    {
                        e.printStackTrace();
                    }
                }
                else
                {
                    Toast.makeText(MainActivity.this, "Network Problem", Toast.LENGTH_LONG).show();
                }
            }
}

基于json我将行和列添加到网格视图

Customgrid：

package com.app.redbuslayout;

import java.util.ArrayList;
import java.util.HashMap;

import android.content.Context;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.TextView;

public class CustomGrid extends BaseAdapter{
     private Context mContext;
    ArrayList<HashMap<String, String>> sheetdetails = new ArrayList<HashMap<String, String>>();
     public CustomGrid(Context c,ArrayList<HashMap<String, String>> sheetdetails) {
         mContext = c;
         this.sheetdetails= sheetdetails;
    }@Override
     public int getCount() {
         // TODO Auto-generated method stub
         return sheetdetails.size();
     }@Override
     public Object getItem(int position) {
         // TODO Auto-generated method stub
         return sheetdetails.get(position);
     }
    @Override
    public long getItemId(int arg0) {
        // TODO Auto-generated method stub
        return 0;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub
        View grid;
        LayoutInflater inflater = (LayoutInflater) mContext
            .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        if (convertView == null) {
            grid = new View(mContext);
            grid = inflater.inflate(R.layout.row_grid, null);

            ImageView imageView = (ImageView) grid.findViewById(R.id.grid_image);

            HashMap<String, String> map = sheetdetails.get(position);
            imageView.setImageResource(Integer.valueOf(map.get("seat_img")));


        } else {
            grid = (View) convertView;
        }

        return grid;
    }
  }

行网格：

 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:padding="5dp"
    android:background="#ffffff" >


    <ImageView
        android:id="@+id/grid_image"
        android:layout_width="wrap_content"
         android:layout_marginTop="15dp"

        android:layout_height="wrap_content">
    </ImageView>

</LinearLayout>

Answer 1

您可以使用android:numColumns="any_integer"定义一行中的项目数。

例如，您有5个项目，并且想要减小它们之间的水平间距。 您应该像android:numColumns="10"那样放。