我有一个使用sqlite数据库和listview扩展baseAdapter的android活动。
我需要的是显示sqlite中包含的数据，以便在列表视图中显示。
sqlite包含可绘制文件夹中存在的图像名称。
所以我的问题是如何使用这个listView在获取数据后扩展Baseadapter
活动中的??
谁能帮助我？package com.devleb.expandablelistdemo3;
public class ItemDetails {
String Name;
int image;
String stad_name;
String team1;
String team2;
String flag1;
String flag2;
String Date_match;
String group;
public String getGroup() {
return group;
}
public void setGroup(String group) {
this.group = 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 getFlag1() {
return flag1;
}
public void setFlag1(String flag1) {
this.flag1 = flag1;
}
public String getFlag2() {
return flag2;
}
public void setFlag2(String flag2) {
this.flag2 = flag2;
}
public String getDate_match() {
return Date_match;
}
public void setDate_match(String date_match) {
Date_match = date_match;
}
public String getName() {
return Name;
}
public void setName(String name) {
Name = name;
}
public int getImage() {
return image;
}
public void setImage(int image) {
this.image = image;
}
}
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.ImageView;
import android.widget.TextView;
public class CustomAdapterMatchSchedule extends BaseAdapter {
ArrayList<ItemDetails> itemdetailsList;
Context context;
public CustomAdapterMatchSchedule(Context context,
ArrayList<ItemDetails> list) {
this.context = context;
itemdetailsList = list;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return itemdetailsList.size();
}
@Override
public Object getItem(int position) {
// TODO Auto-generated method stub
return itemdetailsList.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 itemdetail = itemdetailsList.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(itemdetail.getStad_name());
// team1
TextView txtTeam1 = (TextView) convertView.findViewById(R.id.textName1);
txtTeam1.setText(itemdetail.getTeam1());
// team2
TextView txtTeam2 = (TextView) convertView.findViewById(R.id.textName2);
txtTeam2.setText(itemdetail.getTeam2());
// flag1
int imageid = context.getResources().getIdentifier("brazil_flag",
"drawable", context.getPackageName());
ImageView imagenow = (ImageView) convertView
.findViewById(R.id.imageView1);
imagenow.setImageResource(imageid);
// flag2
int imageid2 = context.getResources().getIdentifier("croatian_flag",
"drawable", context.getPackageName());
ImageView imagenow2 = (ImageView) convertView
.findViewById(R.id.imageView2);
imagenow.setImageResource(imageid2);
// match_date
TextView txtmatch_date = (TextView) convertView
.findViewById(R.id.txtDate);
txtmatch_date.setText(itemdetail.getDate_match());
// group
TextView txtGroup = (TextView) convertView.findViewById(R.id.textGroup);
txtGroup.setText(itemdetail.getGroup());
return convertView;
}
}
04-28 09:36:43.109: E/SQLiteLog(3465): (14) cannot open file at line 30191 of [00bb9c9ce4]
04-28 09:36:43.109: E/SQLiteLog(3465): (14) os_unix.c:30191: (2) open(//data//data//com.devleb.expandablelistdemo3//databases//world_cup.db) -
04-28 09:36:43.117: E/SQLiteDatabase(3465): Failed to open database '//data//data//com.devleb.expandablelistdemo3//databases//world_cup.db'.
04-28 09:36:43.117: E/SQLiteDatabase(3465): android.database.sqlite.SQLiteCantOpenDatabaseException: unknown error (code 14): Could not open database
04-28 09:36:43.117: E/SQLiteDatabase(3465): at android.database.sqlite.SQLiteConnection.nativeOpen(Native Method)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:209)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at android.database.sqlite.SQLiteConnection.open(SQLiteConnection.java:193)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at android.database.sqlite.SQLiteConnectionPool.openConnectionLocked(SQLiteConnectionPool.java:463)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at android.database.sqlite.SQLiteConnectionPool.open(SQLiteConnectionPool.java:185)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at android.database.sqlite.SQLiteConnectionPool.open(SQLiteConnectionPool.java:177)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at android.database.sqlite.SQLiteDatabase.openInner(SQLiteDatabase.java:804)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at android.database.sqlite.SQLiteDatabase.open(SQLiteDatabase.java:789)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:694)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at android.database.sqlite.SQLiteDatabase.openDatabase(SQLiteDatabase.java:669)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at com.devleb.expandablelistdemo3.ExternalDbOpenHelper.checkDataBase(ExternalDbOpenHelper.java:71)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at com.devleb.expandablelistdemo3.ExternalDbOpenHelper.createDataBase(ExternalDbOpenHelper.java:53)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at com.devleb.expandablelistdemo3.ExternalDbOpenHelper.openDataBase(ExternalDbOpenHelper.java:104)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at com.devleb.expandablelistdemo3.ExternalDbOpenHelper.<init>(ExternalDbOpenHelper.java:49)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at com.devleb.expandablelistdemo3.MatchScheduleList.onCreate(MatchScheduleList.java:71)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at android.app.Activity.performCreate(Activity.java:5133)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2175)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2261)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at android.app.ActivityThread.access$600(ActivityThread.java:141)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1256)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at android.os.Handler.dispatchMessage(Handler.java:99)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at android.os.Looper.loop(Looper.java:137)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at android.app.ActivityThread.main(ActivityThread.java:5103)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at java.lang.reflect.Method.invokeNative(Native Method)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at java.lang.reflect.Method.invoke(Method.java:525)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
04-28 09:36:43.117: E/SQLiteDatabase(3465): at dalvik.system.NativeStart.main(Native Method)
04-28 09:36:43.117: E/class com.devleb.expandablelistdemo3.ExternalDbOpenHelper(3465): Error while checking db
此活动必须扩展活动 这里我必须编写代码才能使其正常工作
package com.devleb.expandablelistdemo3;
import java.util.ArrayList;
import android.os.Bundle;
import android.app.Activity;
import android.app.ListActivity;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.support.v4.widget.SimpleCursorAdapter;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
import android.widget.AdapterView.OnItemClickListener;
public class MatchScheduleList extends Activity {
private static final String DB_NAME = "world_cup.db";
// *****Tables name**************************//
private static final String TABLE_NAME = "match_list";
// *****Tbale name******************************//
public static final String PLACE_ID = "_id";
public static final String STAD_NAME = "stad_name";
public static final String TEAM1 = "team1";
public static final String TEAM2 = "team2";
public static final String STAGE = "stage";
public static final String MATCH_DATE = "match_date";
public static final String GROUP = "group_team";
public static final String FLAG1 = "flags1";
public static final String FLAG2 = "flags2";
public static final String[] ALL_KEYS = new String[] { PLACE_ID, STAD_NAME,
TEAM1, TEAM2, STAGE, MATCH_DATE, FLAG1, FLAG2, GROUP };
// *****Tbale name******************************//
private SQLiteDatabase database;
private ListView myList;
private ArrayList<ItemDetails> list = new ArrayList<ItemDetails>();
private ExternalDbOpenHelper extDB;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_match_schedule_list);
ExternalDbOpenHelper extDB = new ExternalDbOpenHelper(this, DB_NAME);
database = extDB.openDataBase();
populateLitsFromDB();
}
public Cursor getAllRows() {
String where = null;
Cursor c = database.query(true, TABLE_NAME, ALL_KEYS, where, null,
null, null, null, null);
if (c != null) {
c.moveToFirst();
}
return c;
}
private void populateLitsFromDB() {
// TODO Auto-generated method stub
Cursor cursor = getAllRows();
// allo0w activity to manage life cicle of the cursor
startManagingCursor(cursor);
CustomAdapterMatchSchedule customAdapter = new CustomAdapterMatchSchedule(
this, list);
Log.d("in the getAllRows", customAdapter.toString());
// set the adapter for te listView
myList = (ListView) findViewById(R.id.list);
myList.setAdapter(customAdapter);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.match_schedule_list, menu);
return true;
}
}
答案 0 :(得分：0)
Simpley在您的活动或片段中创建适配器的实例，并致电：
YourAdapter adapter = new YourAdapter(getActivity(), yourItems);
listView.setAdapter(yourAdapter)
有关示例，请参阅：
答案 1 :(得分：0)
您需要为ArrayList课程制作一个全局ItemDetails。像，
ArrayList<ItemDetails> itemdetailsList = new ArrayList<ItemDetails>();
之后将此arraylist传递给您的自定义适配器。像，
CustomAdapterMatchSchedule adapter = new CustomAdapterMatchSchedule(getActivity(), itemdetailsList);
然后将该适配器设置为ListView。
listview.setAdapter(adapter);
答案 2 :(得分：0)
Simpley在您的活动中创建适配器的实例
MySimpleArrayAdapter adapter = new MySimpleArrayAdapter(YourActvity.this,
items);
listview.setAdapter(adapter);
答案 3 :(得分：0)
从光标获取数据然后将该arraylist传递给自定义适配器的方法。然后最终将适配器绑定到listview。
startManagingCursor(cursor);
ArrayList<ItemDetails> itemdetailsList = new ArrayList<ItemDetails>();
ItemDetails objItem;
cursor.moveToFirst();
while (!cursor.isAfterLast()) {
objItem = new ItemDetails();
stad_name = cursor.getString(cursor.getColumnIndex("stad_name_FIELDNAME"));
team1 = cursor.getString(cursor.getColumnIndex("team1_FIELDNAME"));
. . .
itemdetailsList.add(objItem);
cursor.moveToNext();
}
MySimpleArrayAdapter adapter = new MySimpleArrayAdapter(YourActvity.this,
itemdetailsList);
listview.setAdapter(adapter);