我有android的应用程序,检索sqlite的数据并显示在BaseAdapter数据..什么是最好的方法? [英] i have android app that retrieve data from sqlite and display the data in BaseAdapter .. what is the best way ??

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问题描述

我有一个检索SQLite数据库数据并显示在ListView这些数据扩展BaseAdapter Android应用程序。

在这个程序我在绘制文件夹的图像和我的sqlite的包含这些图像的名称的字段。

我的问题是如何获取这些数据,并在ListView ??

显示它

我阅读本教程:(的http://www.androidhub4you.com/2012/09/hello-friends-today-i-am-going-to-share.html).

我的问题是有没有其他办法做到这一点?

我将AP preciate任何帮助。

row_list_match_schedulle.xml

 < XML版本=1.0编码=UTF-8&GT?;
< RelativeLayout的的xmlns:机器人=htt​​p://schemas.android.com/apk/res/android
    机器人:ID =@ + ID / RelativeLayout1
    机器人:layout_width =match_parent
    机器人:layout_height =match_parent
    机器人:方向=垂直>

    <的TextView
        机器人:ID =@ + ID / textGroup
        机器人:layout_width =WRAP_CONTENT
        机器人:layout_height =WRAP_CONTENT
        机器人:layout_alignParentLeft =真
        机器人:layout_alignParentTop =真
        机器人:文本=集团
        机器人:textAppearance =机器人:ATTR / textAppearanceMedium/>

    <的TextView
        机器人:ID =@ + ID / txtDate
        机器人:layout_width =WRAP_CONTENT
        机器人:layout_height =WRAP_CONTENT
        机器人:layout_alignParentTop =真
        机器人:layout_centerHorizo​​ntal =真
        机器人:文本=日期
        机器人:textAppearance =:/>中的Andr​​oid ATTR / textAppearanceSmall?



    <的TextView
        机器人:ID =@ + ID / textName1
        机器人:layout_width =WRAP_CONTENT
        机器人:layout_height =WRAP_CONTENT
        机器人:layout_alignBottom =@ + ID / imageView1
        机器人:layout_alignParentLeft =真
        机器人:文本=名1/>

    <的TextView
        机器人:ID =@ + ID / textName2
        机器人:layout_width =WRAP_CONTENT
        机器人:layout_height =WRAP_CONTENT
        机器人:layout_alignBottom =@ + ID / imageView2
        机器人:layout_alignParentRight =真
        机器人:文本=名称2/>

    < ImageView的
        机器人:ID =@ + ID / imageView1
        机器人:layout_width =WRAP_CONTENT
        机器人:layout_height =WRAP_CONTENT
        机器人:layout_below =@ + ID / textLocation
        机器人:layout_toRightOf =@ + ID / textName1
        机器人:adjustViewBounds =真
        机器人:=了maxHeight40dp
        机器人:=了maxWidth40dp
        机器人:scaleType =fitCenter
        机器人:SRC =@可绘制/ algeria_flag/>

    < ImageView的
        机器人:ID =@ + ID / imageView2
        机器人:layout_width =WRAP_CONTENT
        机器人:layout_height =WRAP_CONTENT
        机器人:layout_alignTop =@ + ID / imageView1
        机器人:layout_toLeftOf =@ + ID / textName2
        机器人:adjustViewBounds =真
        机器人:=了maxHeight40dp
        机器人:=了maxWidth40dp
        机器人:scaleType =fitCenter
        机器人:SRC =@可绘制/ algeria_flag/>

    <的TextView
        机器人:ID =@ + ID / textLocation
        机器人:layout_width =WRAP_CONTENT
        机器人:layout_height =WRAP_CONTENT
        机器人:layout_below =@ + ID / textGroup
        机器人:layout_centerHorizo​​ntal =真
        机器人:layout_marginTop =18dp
        机器人:文本=位置/>

< / RelativeLayout的>
 

ItemDetails.java

 包com.devleb.expandablelistdemo3;

公共类ItemDetails {

    字符串stad_name;
    字符串team1;
    字符串的Team2;
    字符串match_date;
    字符串FLAGS1;
    字符串flags2;
    弦乐群;


    公共字符串getStad_name(){
        返回stad_name;
    }
    公共无效setStad_name(字符串stad_name){
        this.stad_name = stad_name;
    }
    公共字符串getTeam1(){
        返回team1;
    }
    公共无效setTeam1(字符串team1){
        this.team1 = team1;
    }
    公共字符串getTeam2(){
        返回的Team2;
    }
    公共无效setTeam2(字符串的Team2){
        this.team2 =的Team2;
    }
    公共字符串getMatch_date(){
        返回match_date;
    }
    公共无效setMatch_date(字符串match_date){
        this.match_date = match_date;
    }
    公共字符串getFlags1(){
        返回FLAGS1;
    }
    公共无效setFlags1(字符串FLAGS1){
        this.flags1 = FLAGS1;
    }
    公共字符串getFlags2(){
        返回flags2;
    }
    公共无效setFlags2(字符串flags2){
        this.flags2 = flags2;
    }
    公共字符串getGroup(){
        返回组;
    }
    公共无效个setgroup(弦乐群){
        this.group =组;
    }


}
 

这是我在写一直到现在的 BaseAdapter

CustomAdapterMatchSchedule.java

 包com.devleb.expandablelistdemo3;

进口的java.util.ArrayList;

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

公共类CustomAdapterMatchSchedule扩展了BaseAdapter {

    LayoutInflater layoutInflater;
    ArrayList的< ItemDetails> itemdetailList;
    上下文语境;

    公共CustomAdapterMatchSchedule(上下文C,ArrayList的< ItemDetails> listOfItem){
        this.context = C;
        itemdetailList = listOfItem;
    }

    @覆盖
    公众诠释getCount将(){
        // TODO自动生成方法存根
        返回itemdetailList.size();
    }

    @覆盖
    公共对象的getItem(INT位置){
        // TODO自动生成方法存根
        返回itemdetailList.get(位置);
    }

    @覆盖
    众长getItemId(INT位置){
        // TODO自动生成方法存根
        返回的位置;
    }

    @覆盖
    公共查看getView(INT位置,查看convertView,ViewGroup中ARG2){
        // TODO自动生成方法存根

        ItemDetails itemListDetails = itemdetailList.get(位置);

        如果(convertView == NULL){
            LayoutInflater充气=(LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = inflater.inflate(R.layout.row_list_match_schedule,NULL);
        }
        // Stad_name
        TextView的txtStadName =(TextView中)convertView.findViewById(R.id.textLocation);
        txtStadName.setText(itemListDetails.getStad_name());
        // team1
        TextView的txtTeam1 =(TextView中)convertView.findViewById(R.id.textName1);
        txtTeam1.setText(itemListDetails.getTeam1());
        //的Team2
        TextView的txtTeam2 =(TextView中)convertView.findViewById(R.id.textName2);
        txtTeam2.setText(itemListDetails.getTeam2());
        // FLAG1
        TextView的txtflag1 =(TextView中)convertView.findViewById(R.id.imageView1);
        txtflag1.setText(itemListDetails.getTeam1());

        // FLAG2

        返回null;
    }

}
 

解决方案

这是最合适的方式,特别是因为每个列表视图行包含了很多items.If你想获得一个点击的行中的项目就变成了步行在群雄,C $ c.As不到10行的$就本人而言,它的最佳途径。不要担心,其还我使用。

i have an android application that retrieve data from sqlite database and display these data in a listView that extend a BaseAdapter.

in this app i have images in the drawable folder and i have in the sqlite a field that contain name of these images.

my question is how to retrieve these data and display it in a listView ??

i read this tutorial :(http://www.androidhub4you.com/2012/09/hello-friends-today-i-am-going-to-share.html).

my question is there any other way to do this ??

i will appreciate any help .

row_list_match_schedulle.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/RelativeLayout1"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <TextView
        android:id="@+id/textGroup"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentLeft="true"
        android:layout_alignParentTop="true"
        android:text="Group"
        android:textAppearance="?android:attr/textAppearanceMedium" />

    <TextView
        android:id="@+id/txtDate"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        android:text="Date"
        android:textAppearance="?android:attr/textAppearanceSmall" />



    <TextView
        android:id="@+id/textName1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/imageView1"
        android:layout_alignParentLeft="true"
        android:text="name1" />

    <TextView
        android:id="@+id/textName2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignBottom="@+id/imageView2"
        android:layout_alignParentRight="true"
        android:text="Name2" />

    <ImageView
        android:id="@+id/imageView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textLocation"
        android:layout_toRightOf="@+id/textName1"
        android:adjustViewBounds="true"
        android:maxHeight="40dp"
        android:maxWidth="40dp"
        android:scaleType="fitCenter"
        android:src="@drawable/algeria_flag" />

    <ImageView
        android:id="@+id/imageView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignTop="@+id/imageView1"
        android:layout_toLeftOf="@+id/textName2"
        android:adjustViewBounds="true"
        android:maxHeight="40dp"
        android:maxWidth="40dp"
        android:scaleType="fitCenter"
        android:src="@drawable/algeria_flag" />

    <TextView
        android:id="@+id/textLocation"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/textGroup"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="18dp"
        android:text="Location" />

</RelativeLayout>

ItemDetails.java

package com.devleb.expandablelistdemo3;

public class ItemDetails {

    String stad_name;
    String team1;
    String team2;
    String match_date;
    String flags1;
    String flags2;
    String group;


    public String getStad_name() {
        return stad_name;
    }
    public void setStad_name(String stad_name) {
        this.stad_name = stad_name;
    }
    public String getTeam1() {
        return team1;
    }
    public void setTeam1(String team1) {
        this.team1 = team1;
    }
    public String getTeam2() {
        return team2;
    }
    public void setTeam2(String team2) {
        this.team2 = team2;
    }
    public String getMatch_date() {
        return match_date;
    }
    public void setMatch_date(String match_date) {
        this.match_date = match_date;
    }
    public String getFlags1() {
        return flags1;
    }
    public void setFlags1(String flags1) {
        this.flags1 = flags1;
    }
    public String getFlags2() {
        return flags2;
    }
    public void setFlags2(String flags2) {
        this.flags2 = flags2;
    }
    public String getGroup() {
        return group;
    }
    public void setGroup(String group) {
        this.group = group;
    }


}

this is what i wrote until now in the BaseAdapter

CustomAdapterMatchSchedule.java

package com.devleb.expandablelistdemo3;

import java.util.ArrayList;

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

public class CustomAdapterMatchSchedule extends BaseAdapter {

    LayoutInflater layoutInflater;
    ArrayList<ItemDetails> itemdetailList;
    Context context;

    public CustomAdapterMatchSchedule(Context c, ArrayList<ItemDetails> listOfItem){
        this.context = c;
        itemdetailList = listOfItem;
    }

    @Override
    public int getCount() {
        // TODO Auto-generated method stub
        return itemdetailList.size();
    }

    @Override
    public Object getItem(int position) {
        // TODO Auto-generated method stub
        return itemdetailList.get(position);
    }

    @Override
    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup arg2) {
        // TODO Auto-generated method stub

        ItemDetails itemListDetails = itemdetailList.get(position);

        if(convertView == null){
            LayoutInflater inflater =  (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            convertView = inflater.inflate(R.layout.row_list_match_schedule, null);
        }
        //Stad_name
        TextView txtStadName = (TextView)convertView.findViewById(R.id.textLocation);
        txtStadName.setText(itemListDetails.getStad_name());
        //team1
        TextView txtTeam1 = (TextView)convertView.findViewById(R.id.textName1);
        txtTeam1.setText(itemListDetails.getTeam1());
        //team2
        TextView txtTeam2 = (TextView)convertView.findViewById(R.id.textName2);
        txtTeam2.setText(itemListDetails.getTeam2());
        //flag1
        TextView txtflag1 = (TextView)convertView.findViewById(R.id.imageView1);
        txtflag1.setText(itemListDetails.getTeam1());

        //flag2

        return null;
    }

}

解决方案

This is the most appropriate way,especially because each listview row contains a lot of items.If you want to get the items on a clicked row it becomes a walk in the pack,less than 10 lines of code.As far as am concerned,its the best way. Don't get worried,its also what i use.

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