【发布时间】：2014-03-22 22:01:49
【问题描述】：
我有这个数据库，我需要用信息填充这个ListView。
我的 DBHandler 类上已经有一个方法：
public List<Appointment> getAppointments(){
List<Appointment> appointmentList = new ArrayList<Appointment>();
String selectQuery = "SELECT * FROM " + TABLE_APP;//query to search appointment by title
SQLiteDatabase db = this.getWritableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
if(cursor.moveToFirst()){
do{
Appointment appointment = new Appointment();
appointment.setID(Integer.parseInt(cursor.getString(0)));
appointment.setDate(cursor.getString(1));
appointment.setTitle(cursor.getString(2));
appointment.setTime(cursor.getString(3));
appointment.setDetails(cursor.getString(4));
appointmentList.add(appointment);
} while(cursor.moveToNext());
}
return appointmentList;
}
现在我需要在我的 DeleteAppointment 类中填充列表：
package com.example.calendar;
import android.app.Activity;
import android.database.Cursor;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ArrayAdapter;
import android.widget.Button;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
public class DeleteAppointment extends Activity implements OnClickListener{
Appointment app;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.delete);
Button delete = (Button)findViewById(R.id.btn_delete);
Button deleteAll = (Button)findViewById(R.id.btn_deleteAll);
ListView list = (ListView)findViewById(R.id.apptList);
DBHandler db = new DBHandler(this);
String[] columns = new String[]{app._date, app._title, app._time, app._details};
int[] viewIDs = new int[]{R.id.date, R.id.name, R.id.time, R.id.details};
Cursor cursor = (Cursor) db.getAppointments();
SimpleCursorAdapter adapter;
adapter = new SimpleCursorAdapter(getBaseContext(), R.layout.item, cursor, columns, viewIDs, 0);
list.setAdapter(adapter);
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch(v.getId()){
case R.id.btn_delete:
finish();
break;
}
}
}
还有布局的xml文件：
<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >
<ListView android:id="@+id/apptList"
android:layout_width="match_parent"
android:layout_height="wrap_content"></ListView>
<TableLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TableRow>
<Button
android:id="@+id/btn_delete"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/deleteDialog"/>
<Button
android:id="@+id/btn_deleteAll"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="@string/deleteAll"/>
</TableRow>
</TableLayout>
</LinearLayout>
</ScrollView>
项目布局：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content" >
<TextView
android:id="@+id/date"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:id="@+id/time"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:id="@+id/name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
<TextView
android:id="@+id/details"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
</RelativeLayout>
还有约会类：
package com.example.calendar;
import java.sql.Date;
public class Appointment {
//variables(that are the attributes of the database table)
int _id;
String _title;
String _time;
String _details;
String _date;
//empty constructor to add for the update method in the DBHandler
public Appointment(){
}
public Appointment(int id, String date, String title, String time, String details){
this._id = id;
this._date = date;
this._title = title;
this._time = time;
this._details = details;
}
public Appointment(String date, String title, String time, String details){
this._date = date;
this._title = title;
this._time = time;
this._details = details;
}
//----------GET/SET METHODS BELOW-----------
//--------ID---------
public int getID(){
return this._id;
}
public void setID(int id){
this._id = id;
}
//-------DATE-------
public String getDate(){
return this._date;
}
public void setDate(String date){
this._date = date;
}
//-----TITLE---------
public String getTitle(){
return this._title;
}
public void setTitle(String title){
this._title = title;
}
//------TIME-------
public String getTime(){
return this._time;
}
public void setTime(String time){
this._time = time;
}
//------DETAILS--------
public String getDetails(){
return this._details;
}
public void setDetails(String details){
this._details = details;
}
}
如何以简单的方式填充此列表？
请帮忙。
【问题讨论】：
-
简单的方法？使用 SimpleCursorAdapter
-
和？它是否有效？
-
@pskink 我很接近，但不是很接近
-
没有多大帮助，怎么了？
-
给出下面的答案，我需要填充列表，但该行必须在一个大字符串中包含所有属性。我该怎么做？
标签： android xml sqlite listview android-listview