收到消息时出现一个空白窗口...如何克服它..如何在后台进行？？？给出了我的接收、存储和数据库类...
package com.example.crypton;
import java.util.ArrayList;
import java.util.List;
import android.content.ContentValues;
import android.content.Context;
import android.database.Cursor;
import android.database.sqlite.SQLiteDatabase;
import android.database.sqlite.SQLiteOpenHelper;
public class DatabaseHandler extends SQLiteOpenHelper {
// All Static variables
// Database Version
private static final int DATABASE_VERSION = 1;
// Database Name
private static final String DATABASE_NAME = "contactsManager1";
// Contacts table name
private static final String TABLE_CONTACTS = "contacts";
// Contacts Table Columns names
private static final String KEY_NAME = "name";
private static final String KEY_PH_NO = "phone_number";
public DatabaseHandler(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
}
// Creating Tables
@Override
public void onCreate(SQLiteDatabase db) {
String CREATE_CONTACTS_TABLE = "CREATE TABLE " + TABLE_CONTACTS + "("
+ KEY_NAME + " TEXT,"
+ KEY_PH_NO + " TEXT" + ")";
db.execSQL(CREATE_CONTACTS_TABLE);
}
// Upgrading database
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
// Drop older table if existed
db.execSQL("DROP TABLE IF EXISTS " + TABLE_CONTACTS);
// Create tables again
onCreate(db);
}
/**
* All CRUD(Create, Read, Update, Delete) Operations
*/
// Adding new contact
void addSMS(IncomingSMS sms) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_NAME, sms.getDesc()); // Contact Name
values.put(KEY_PH_NO, sms.getphonenumber()); // Contact Phone
// Inserting Row
db.insert(TABLE_CONTACTS, null, values);
db.close(); // Closing database connection
}
// Getting single contact
/* Contact getContact(int id) {
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.query(TABLE_CONTACTS, new String[] { KEY_ID,
KEY_NAME, KEY_PH_NO }, KEY_ID + "=?",
new String[] { String.valueOf(id) }, null, null, null, null);
if (cursor != null)
cursor.moveToFirst();
Contact contact = new Contact(Integer.parseInt(cursor.getString(0)),
cursor.getString(1), cursor.getString(2));
// return contact
return contact;
}*/
// Getting All Contacts
public ArrayList<IncomingSMS> getAllsms() {
ArrayList<IncomingSMS> smsList = new ArrayList<IncomingSMS>();
// Select All Query
String selectQuery = "SELECT * FROM " + TABLE_CONTACTS;
SQLiteDatabase db = this.getWritableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);
// looping through all rows and adding to list
if (cursor.moveToFirst()) {
do {
IncomingSMS sms = new IncomingSMS();
sms.setDesc(cursor.getString(0));
sms.setphonenumber(cursor.getString(1));
// Adding contact to list
smsList.add(sms);
} while (cursor.moveToNext());
}
// return contact list
return smsList;
}
// Updating single contact
public int updateContact(IncomingSMS sms) {
SQLiteDatabase db = this.getWritableDatabase();
ContentValues values = new ContentValues();
values.put(KEY_NAME, sms.getDesc());
values.put(KEY_PH_NO, sms.getphonenumber());
// updating row
return db.update(TABLE_CONTACTS, values, KEY_NAME + " = ?",
new String[] { String.valueOf(sms.getDesc()),String.valueOf(sms.getphonenumber()) });
}
// Deleting single contact
public void deleteSMS(IncomingSMS sms) {
SQLiteDatabase db = this.getWritableDatabase();
db.delete(TABLE_CONTACTS, KEY_NAME + " = ?",
new String[] { String.valueOf(sms.getDesc()) });
db.close();
}
// Getting contacts Count
public int getContactsCount() {
String countQuery = "SELECT * FROM " + TABLE_CONTACTS;
SQLiteDatabase db = this.getReadableDatabase();
Cursor cursor = db.rawQuery(countQuery, null);
cursor.close();
// return count
return cursor.getCount();
}
}
//smsreceiver class
package com.example.crypton;
import java.util.ArrayList;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.provider.ContactsContract.PhoneLookup;
import android.telephony.SmsMessage;
import android.widget.Toast;
public class SmsReceiver extends BroadcastReceiver {
ArrayList<String> your_array_list = new ArrayList<String>();
@Override
public void onReceive(Context context, Intent intent)
{
//---get the SMS message passed in---
Bundle bundle = intent.getExtras();
SmsMessage[] msgs = null;
String str = "";
String str2 = "";
if (bundle != null)
{
//---retrieve the SMS message received---
Object[] pdus = (Object[]) bundle.get("pdus");
msgs = new SmsMessage[pdus.length];
for (int i=0; i<msgs.length; i++){
msgs[i] = SmsMessage.createFromPdu((byte[])pdus[i]);
str2 += msgs[i].getOriginatingAddress();
// str2 += " :";
str += msgs[i].getMessageBody().toString();
}
Uri lookupUri = Uri.withAppendedPath(PhoneLookup.CONTENT_FILTER_URI, Uri.encode(str2));
Cursor c = context.getContentResolver().query(lookupUri, new String[]{ContactsContract.Data.DISPLAY_NAME},null,null,null);
try {
c.moveToFirst();
String displayName = c.getString(0);
str2 = displayName;
} catch (Exception e) {
e.printStackTrace();
}finally{
c.close();
}
//---display the new SMS message---
Toast.makeText(context, str, Toast.LENGTH_LONG).show();
Intent i = new Intent(context, StoreMsg.class);
i.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
i.putExtra("sms", str);
i.putExtra("phonenumber",str2);
context.startActivity(i);
}
}
}
//storemsg class
package com.example.crypton;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
public class StoreMsg extends Activity {
String finalmessage;
String phonenumber;
public void onCreate(Bundle savedInstanceState){ super. onCreate (savedInstanceState);
Intent intent = getIntent();
finalmessage = intent.getStringExtra("sms");
phonenumber=intent.getStringExtra("phonenumber");
DatabaseHandler db = new DatabaseHandler(this);
db.addSMS(new IncomingSMS(finalmessage,phonenumber));
//Intent i = new Intent(StoreMsg.this,INBOX.class);
//StoreMsg.this.startActivity(i);
}
}