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我無法弄清楚如何使這項工作。Android - AsyncTask或線程同時恢復數據到SQLite
我正在開發一個應用程序，我從在線txt下載數據，解析並將其添加到我的數據庫。這需要+30秒，並且只有更新器的一部分被實現。
當我嘗試使用線程或Asynctask時，嘗試將參數傳遞給正在更新數據庫的void時遇到問題。
我該如何在好的方式上實現它？
這裏是我的代碼：
主要業務類：
public class Androideye_principal extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
//WhazzupUpdate.DownloadWhazzup(AllUsers, TotalConnections);
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_androideye_principal);
PilotsSQLiteHelper pdbh = new PilotsSQLiteHelper(this, "PilotsDB", null, 1);
SQLiteDatabase dbPilots = pdbh.getWritableDatabase();
Context context = getApplicationContext();
String TotalConnections = new String();
WhazzupUpdate.DownloadWhazzup(dbPilots, TotalConnections, context);
dbPilots.close();
CharSequence text = "Total Users: " + TotalConnections;
int duration = Toast.LENGTH_LONG;
Toast toast = Toast.makeText(context, text, duration);
toast.show();
[Continues with Buttons stuff and so on...]
解析類：
public class WhazzupUpdate {
public static void DownloadWhazzup (SQLiteDatabase PilotsDB, String TotalConnections, Context context) {
try {
// Create a URL for the desired page
URL url = new URL("This is my url/whazzup.txt");
// Read all the text returned by the server
BufferedReader in = new BufferedReader(new InputStreamReader(url.openStream()));
String str;
for (int i = 0; i<=4; i++) {
in.readLine(); } // Go to the number of connections
TotalConnections = in.readLine();
for (int i = 0; i<=3; i++) {
in.readLine(); } // Go to !CLIENTS
PilotsDB.execSQL("DELETE FROM Pilots");
while (((str = in.readLine()) != null) && !(in.readLine().contains("!AIRPORTS"))) {
// str is one line of text; readLine() strips the newline character(s)
String[] dataRow = str.split(":");
if (str.contains("PILOT")) {
ContentValues NewValue = new ContentValues();
NewValue.put("VID", dataRow[1]);
[More NewValue puts...]
PilotsDB.insert("Pilots", null, NewValue);
} //End IF Pilot
} // End While
in.close();
} catch (MalformedURLException e) {
} catch (IOException e) {
}
}}
正如你看到的，我叫WhazzupUpdate.DownloadWhazzup法的主要活動，這就是當所有人都被凍結時，但不知道如何將其推演到另一個威脅，並保留對數據庫的引用，等等......
希望任何人都可以幫助我。提前致謝。