为GridView控件在Android的自定义适配器 [英] custom adapter for gridview in android
问题描述
即时从数据库获取数据,并在GridView fine.but我需要把每个文本下面一个单独的按钮displayed.When我按一下按钮显示的,我已经做了一些stuff.Here我用customList适配器检索从DB.How数据可能我做到这一点?
im getting data from DB and displayed in a gridview fine.but i need to put a separate button below each text displayed.When i click the button.,i've to do some stuff.Here i used customList adapter for retrieved data from DB.How could i do that?
我的code ..
public class HomePage extends Activity {
private ArrayList<SingleElementDetails> allElementDetails=new ArrayList<SingleElementDetails>();
DBAdapter db=new DBAdapter(this);
String category, description;
String data;
String data1;
GridView gridview;
Button menu;
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.homepage);
menu=(Button)findViewById(R.id.menus);
menu.setOnClickListener(new OnClickListener(){
public void onClick(View v)
{
gridview=(GridView)findViewById(R.id.gridview);
allElementDetails.clear();
db.open();
long id;
//id=db1.insertTitle1(category, description,r_photo);
Cursor cursor = db.getAllTitles1();
while (cursor.moveToNext())
{
SingleElementDetails single=new SingleElementDetails();
single.setCateogry(cursor.getString(1));
single.setDescription(cursor.getString(2));
single.setImage(cursor.getBlob(3));
allElementDetails.add(single);
}
db.close();
CustomListAdapter adapter=new CustomListAdapter(HomePage.this,allElementDetails);
gridview.setAdapter(adapter);
}
});
}
}
我的customListAdapter ..
My customListAdapter..
import java.io.ByteArrayInputStream;
import java.util.ArrayList;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
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 CustomListAdapter extends BaseAdapter {
private ArrayList<SingleElementDetails> allElementDetails;
private LayoutInflater mInflater;
public CustomListAdapter(Context context, ArrayList<SingleElementDetails> results) {
allElementDetails = results;
mInflater = LayoutInflater.from(context);
}
public int getCount() {
return allElementDetails.size();
}
public Object getItem(int position) {
return allElementDetails.get(position);
}
public long getItemId(int position) {
return position;
}
public View getView(int position, View convertView, ViewGroup parent)
{
convertView = mInflater.inflate(R.layout.listview1, null);
ImageView imageview = (ImageView) convertView.findViewById(R.id.image);
TextView textview = (TextView) convertView.findViewById(R.id.category_entry);
TextView textview1 = (TextView) convertView.findViewById(R.id.description_entry);
textview.setText(allElementDetails.get(position).getCategory());
textview1.setText(allElementDetails.get(position).getDescription());
byte[] byteimage=allElementDetails.get(position).getImage();
ByteArrayInputStream imageStream = new ByteArrayInputStream(byteimage);
BitmapFactory.Options op=new BitmapFactory.Options();
op.inSampleSize=12;
Bitmap theImage= BitmapFactory.decodeStream(imageStream,null,op);
imageview.setImageBitmap(theImage);
return convertView;
}
}
推荐答案
,你必须创建自己的适配器,扩展了BaseAdapter,在这个类为每个网格项目(扩展的LinearLayout)布局有你TextView的那么一个按钮。
Instead of using CustomListAdapter, you will have to create your own adapter that extends BaseAdapter, create a layout for each grid item (extend LinearLayout) in this class have your textview then a button.
尼斯啧:
<一个href="http://www.stealthcopter.com/blog/2010/09/android-creating-a-custom-adapter-for-gridview-buttonadapter/">Custom GridView控件
这篇关于为GridView控件在Android的自定义适配器的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!