Android Store在SQlite数据库中列出ListView数据，并在Listview中检索活动的数据 [英] Android Store Listview data in SQlite database and retrieve data oncreate of activity in Listview
本文介绍了Android Store在SQlite数据库中列出ListView数据，并在Listview中检索活动的数据的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个ListActivity，其中我是一个对话框，用于选择联系人信息和挑选日期和时间。为了在那时生成通知。我做了，所有的数据显示在ListView。
I have a ListActivity in which i am population a dialog box for picking contact info and picking Date and Time . In order to generate a notification on that time . I have done it and all the data is showing in ListView .
所以我想做的是用户选择并设置通知listView行数据应该存储在数据库（sqlite）的时间。并且当用户启动活动时，可以向用户显示存储的数据。所以用户可以看到他们的通知计划..
so what i want to do is as user pick and sets the time for notification the listView row data should store in database (sqlite). and when user start the activity the stored data can be shown to user . so users can see their notifications plan ..
现在我有listViews实现我不知道如何存储和检索数据在sqlite ..我搜索和尝试许多教程，但没有什么是在这种情况下工作。
now that i have listViews implemented i don't know how to store and retrieve data in sqlite .. i have searched and tried many tutorials but nothing is working in this context .
我分享我的代码有点粗糙。
i am sharing my code its a bit rough . but i will highlight where the data is and from there how can store it to database.
这是我的通知类：
public class noticall extends ListActivity {
CustomDateTimePicker custom;
TextView tv,tv1;
EditText ed;
String store;
static String Names;
public static final int PICK_CONTACT = 1;
String [] adi ;
String [] adi1 ;
String [] adi2 ;
String [] adi3 ;
static int incre=0;
ArrayList<String> myrows = new ArrayList<String>();
ArrayList<String> time1 = new ArrayList<String>();
ArrayList<String> name1 = new ArrayList<String>();
ArrayList<String> number1 = new ArrayList<String>();
private PendingIntent pendingIntent;
ListView listview;
String temp1 ,temp2 ;
int x=0;
OnItemClickListener listener;
String Date,Time,Name,Number;
MyNotiAdapter adp;
private SQLiteAdapter mySQLiteAdapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.notify);
listview = (ListView) findViewById(android.R.id.list);
listview.setDividerHeight(2);
// mySQLiteAdapter = new SQLiteAdapter(noticall.this);
custom = new CustomDateTimePicker(noticall.this,new CustomDateTimePicker.ICustomDateTimeListener() {
@Override
public void onCancel() {
finish();
}
@Override
public void onSet(Dialog dialog, Calendar calendarSelected,Date dateSelected, int year, String monthFullName,
String monthShortName, int monthNumber, int date,
String weekDayFullName, String weekDayShortName,
int hour24, int hour12, int min, int sec,
String AM_PM) {
Calendar calendar = Calendar.getInstance();
calendar.set(year, monthNumber, date, hour24, min, 0);
long when = calendar.getTimeInMillis(); // notification time
Intent myIntent = new Intent(noticall.this, MyReceiver.class);
pendingIntent = PendingIntent.getBroadcast(noticall.this, 0, myIntent,0);
AlarmManager alarmManager = (AlarmManager)getSystemService(ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC, calendar.getTimeInMillis(), pendingIntent);
Date = calendarSelected.get(Calendar.DAY_OF_MONTH) + "/" + (monthNumber+1) + "/" +year;
Time = hour12 + ":" + min + " " + AM_PM;
Log.e("Timeee", Time+"");
setlisto(Date);
//Toast.makeText(noticall.this, store, Toast.LENGTH_SHORT).show();
}
});
custom.set24HourFormat(false);
custom.setDate(Calendar.getInstance());
findViewById(R.id.button_date).setOnClickListener(
new OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_PICK, ContactsContract.Contacts.CONTENT_URI);
startActivityForResult(intent,PICK_CONTACT);
custom.showDialog();
incre++;
}
});
// if(adi!=null)
read_db();
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data)
{
super.onActivityResult(requestCode, resultCode, data);
if(resultCode != RESULT_CANCELED){
if (requestCode == 1)
{
// Get the URI that points to the selected contact
Uri contactUri = data.getData();
// We only need the NUMBER column, because there will be only one row in the result
String[] projection = {ContactsContract.CommonDataKinds.Phone.NUMBER, ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME, ContactsContract.CommonDataKinds.Phone.CONTACT_ID};
String[] segments = contactUri.toString().split("/");
String id = segments[segments.length - 1];
// Perform the query on the contact to get the NUMBER column
// We don't need a selection or sort order (there's only one result for the given URI)
// CAUTION: The query() method should be called from a separate thread to avoid blocking
// your app's UI thread. (For simplicity of the sample, this code doesn't do that.)
// Consider using CursorLoader to perform the query.
Cursor cursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, projection, null, null, null);
cursor.moveToFirst();
while (!cursor.isAfterLast())
{
int cid = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.CONTACT_ID);
String contactid = cursor.getString(cid);
if (contactid.equals(id))
{
// Retrieve the phone number from the NUMBER column
int column = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER);
String number = cursor.getString(column);
// Retrieve the contact name from the DISPLAY_NAME column
int column_name = cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME);
String name = cursor.getString(column_name);
// Do something with the phone number...
// Toast.makeText(this, "I added the Contact: \n" + name + " " + number, Toast.LENGTH_SHORT).show();
// ed.setText(name+" - "+number);
Name= Names=name;
Number =number;
}
cursor.moveToNext();
}
cursor.close();
}
}
}
public void setlisto(String one ){
Log.e("setlistoo",one+"");
myrows.add(one);
time1.add(Time);
name1.add(Name);
number1.add(Number);
adi=myrows.toArray(new String[myrows.size()]);
adi1=time1.toArray(new String[time1.size()]);
adi2=name1.toArray(new String[name1.size()]);
adi3=number1.toArray(new String[number1.size()]);
mySQLiteAdapter = new SQLiteAdapter(noticall.this);
mySQLiteAdapter.openToWrite();
mySQLiteAdapter.deleteAll();
mySQLiteAdapter.insert(adi,adi1,adi2,adi3);
listview.setAdapter(new MyNotiAdapter(noticall.this, adi,adi1,adi2,adi3));
x++;
mySQLiteAdapter.close();
}
public void read_db(){
/*
* Open the same SQLite database
* and read all it's content.
*/
Log.e("jsahbdv", "munda agaya medaan men hay jamaalo");
mySQLiteAdapter = new SQLiteAdapter(this);
mySQLiteAdapter.openToRead();
Cursor cursor = mySQLiteAdapter.queueAll();
startManagingCursor(cursor);
String[] from = new String[]{SQLiteAdapter.KEY_Name,SQLiteAdapter.KEY_Number,SQLiteAdapter.KEY_Date,SQLiteAdapter.KEY_Time};
int[] to = new int[]{R.id.person,R.id.edu,R.id.label,R.id.tym};
SimpleCursorAdapter cursorAdapter =
new SimpleCursorAdapter(this, R.layout.row2, cursor, from, to);
listview.setAdapter(cursorAdapter);
mySQLiteAdapter.close();
}
}
我的SQLiteAdapter类别：
public class SQLiteAdapter {
public static final String MYDATABASE_NAME = "MY_DATABASE";
public static final String MYDATABASE_TABLE = "MY_TABLE";
public static final int MYDATABASE_VERSION = 1;
public static final String KEY_ID = "_id";
public static final String KEY_Name = "Name";
public static final String KEY_Number = "Number";
public static final String KEY_Date = "Date";
public static final String KEY_Time = "Time";
//create table MY_DATABASE (ID integer primary key, Content text not null);
private static final String SCRIPT_CREATE_DATABASE =
"create table " + MYDATABASE_TABLE + " ("
+ KEY_ID + " integer primary key autoincrement, "
+ KEY_Name + " text not null, "
+ KEY_Number + " text not null, "
+ KEY_Date + " text not null, "
+ KEY_Time + " text not null);";
private SQLiteHelper sqLiteHelper;
private SQLiteDatabase sqLiteDatabase;
private Context context;
public SQLiteAdapter(Context c){
context = c;
}
public SQLiteAdapter openToRead() throws android.database.SQLException {
sqLiteHelper = new SQLiteHelper(context, MYDATABASE_NAME, null, MYDATABASE_VERSION);
sqLiteDatabase = sqLiteHelper.getReadableDatabase();
return this;
}
public SQLiteAdapter openToWrite() throws android.database.SQLException {
sqLiteHelper = new SQLiteHelper(context, MYDATABASE_NAME, null, MYDATABASE_VERSION);
sqLiteDatabase = sqLiteHelper.getWritableDatabase();
return this;
}
public void close(){
sqLiteHelper.close();
}
public long insert(String[] content,String[] content1,String[] content2,String[] content3){
ContentValues contentValues = new ContentValues();
contentValues.put(KEY_Name, content.toString());
contentValues.put(KEY_Number, content1.toString());
contentValues.put(KEY_Date, content2.toString());
contentValues.put(KEY_Time, content3.toString());
return sqLiteDatabase.insert(MYDATABASE_TABLE, null, contentValues);
}
public int deleteAll(){
return sqLiteDatabase.delete(MYDATABASE_TABLE, null, null);
}
public Cursor queueAll(){
String[] columns = new String[]{KEY_ID, KEY_Name, KEY_Number, KEY_Date, KEY_Time};
Cursor cursor = sqLiteDatabase.query(MYDATABASE_TABLE, columns,null, null, null, null, null);
return cursor;
}
public class SQLiteHelper extends SQLiteOpenHelper {
public SQLiteHelper(Context context, String name,
CursorFactory factory, int version) {
super(context, name, factory, version);
}
@Override
public void onCreate(SQLiteDatabase db) {
// TODO Auto-generated method stub
db.execSQL(SCRIPT_CREATE_DATABASE);
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// TODO Auto-generated method stub
}
}
}
我的观点是当用户添加列表行的通知，它也应该插入数据库，以后当活动启动存储的通知数据必须显示，以后我将实现删除它从listview和数据库。
My point is as user add list rows for notifications it should also be inserted in database and later when activity is initiated the stored notification data must displayed and later i will implement deleting it from listview and from database.
表格应包含以下列：
ID | NAME | NUMBER |日期| TIME |
| ID | NAME | NUMBER | DATE | TIME |
如果有人可以帮助我提供示例代码或重构此代码以获得成功。我在数据库的技能真的很弱..它会很感激。感谢
If someone can help me with sample code or refactor this code for success. My skills in database are really weak .. it will be appreciatable. Thanks
cmon我真的需要帮助。
cmon guys i really need help in this please.
错误
error
07-16 11:35:58.140: E/AndroidRuntime(5252): FATAL EXCEPTION: main
07-16 11:35:58.140: E/AndroidRuntime(5252): Process: org.avatarsipphone.sipua, PID: 5252
07-16 11:35:58.140: E/AndroidRuntime(5252): java.lang.RuntimeException: Unable to resume activity {org.avatarsipphone.sipua/org.avatarsipphone.sipua.ui.noticall}: java.lang.IllegalStateException: trying to requery an already closed cursor android.database.sqlite.SQLiteCursor@520f4d5
07-16 11:35:58.140: E/AndroidRuntime(5252): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3103)
07-16 11:35:58.140: E/AndroidRuntime(5252): at android.app.ActivityThread.handleResumeActivity(ActivityThread.java:3134)
07-16 11:35:58.140: E/AndroidRuntime(5252): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1388)
07-16 11:35:58.140: E/AndroidRuntime(5252): at android.os.Handler.dispatchMessage(Handler.java:102)
07-16 11:35:58.140: E/AndroidRuntime(5252): at android.os.Looper.loop(Looper.java:148)
07-16 11:35:58.140: E/AndroidRuntime(5252): at android.app.ActivityThread.main(ActivityThread.java:5417)
07-16 11:35:58.140: E/AndroidRuntime(5252): at java.lang.reflect.Method.invoke(Native Method)
07-16 11:35:58.140: E/AndroidRuntime(5252): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
07-16 11:35:58.140: E/AndroidRuntime(5252): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
07-16 11:35:58.140: E/AndroidRuntime(5252): Caused by: java.lang.IllegalStateException: trying to requery an already closed cursor android.database.sqlite.SQLiteCursor@520f4d5
07-16 11:35:58.140: E/AndroidRuntime(5252): at android.app.Activity.performRestart(Activity.java:6296)
07-16 11:35:58.140: E/AndroidRuntime(5252): at android.app.Activity.performResume(Activity.java:6319)
07-16 11:35:58.140: E/AndroidRuntime(5252): at android.app.ActivityThread.performResumeActivity(ActivityThread.java:3092)
07-16 11:35:58.140: E/AndroidRuntime(5252): ... 8 more
推荐答案
@ Addi.Star请参阅以下程序
@Addi.Star Please see following program,
-SQLiteHelper
-SQLiteHelper
public static final String DATABASE_NAME="student.db";
public static final String TABLE_NAME="stud_info";
public static final String col1="ID";
public static final String col2="NAME";
public DatabaseHelper(Context context) {
super(context, DATABASE_NAME, null, 1);
//SQLiteDatabase db=this.getWritableDatabase();
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL("create table " + TABLE_NAME + " ( Id INTEGER PRIMARY KEY,NAME TEXT ) ");
Log.e("DB CREATE","DATABASE CREATE");
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
}
public boolean insertData(String id,String name){
SQLiteDatabase db=this.getWritableDatabase();
ContentValues contex=new ContentValues();
contex.put(col1,id);
contex.put(col2,name);
long result=db.insert(TABLE_NAME,null,contex);
if(result==-1)
{
return false;
}else{
return true;
}
}
public Cursor getAllData()
{
SQLiteDatabase db=this.getWritableDatabase();
Cursor res=db.rawQuery("select * from "+TABLE_NAME,null);
return res;
}
- 这是类或适配器中的函数，您可以从SQlite数据库
-and this is function in class or adapter where you can retrieve data from SQlite database
Cursor res=myDb.getAllData();
if(res.getCount() == 0){
ShowMessage("Error", "NOthing found");
return;
}
StringBuffer strBfr=new StringBuffer();
while (res.moveToNext()){
strBfr.append("Id :"+ res.getString(0) + "\n");
strBfr.append("Name:" + res.getString(1) + "\n");
}
ShowMessage("Data", strBfr.toString());
这篇关于Android Store在SQlite数据库中列出ListView数据，并在Listview中检索活动的数据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！
查看全文
