принудительно или сгенерировать дамп ядра jvm (IBM JVM) [дубликат]

Ciaoo: Здесь решение:

я пытался объяснить все в коде.

import android.app.Activity;
import android.content.Context;
import android.database.Cursor;
import android.os.AsyncTask;
import android.view.View;
import android.view.ViewGroup;
import android.view.ViewTreeObserver;
import android.widget.ScrollView;

import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
import java.util.concurrent.TimeUnit;

class HelpUI {

   final static class GetDataFromDBInAsyncMode extends AsyncTask<Object, Object, Object> {

      private Context context;
      private String SQL;
      private final int xMin = -X_App.ScreenHeight; // put here your screen height (get it from code)
      private final int xMax = X_App.ScreenHeight * 2; // put here your screen height (get it from code)

      // this is the main view witch go to have all views
      // Use this in onProgressUpdate to add other vies you get in runtime when you get data from database
      private ViewGroup view_container;

      // if you have a scrollview hide views witch isnot visible to user
      private ScrollView scroll_view_container;

      // this workaround make free processors in measureaments, your UI is more fluent
      final ViewTreeObserver.OnScrollChangedListener onScrollChangedListener = () -> {

         if (view_container == null || view_container.getChildCount() == 0) { return; }

         int scrollY = scroll_view_container.getScrollY();

         for (int i = 0; i < view_container.getChildCount(); i++) {

            final View current = view_container.getChildAt(i);
            final int topView = current.getTop(); //container_views.getChildAt(i).getTop();
            final int diffTop = topView - scrollY;

            if ((diffTop > xMin) && (diffTop < xMax)) {
               current.setVisibility(View.VISIBLE);
            } else {

               current.setVisibility(View.INVISIBLE);
            }

         }

      };

      // constructor
      GetDataFromDBInAsyncMode(Context ctx, String mSQL) {
         this.context = ctx;
         this.SQL = mSQL;

         // put here the id of scrollViewContainer
         scroll_view_container = X_App.getRootV().findViewById(R.id.scroll_view_container);
         if (scroll_view_container != null) {
            // add listener on scroll
            scroll_view_container.getViewTreeObserver().addOnScrollChangedListener(onScrollChangedListener);
         }

      }


      @Override
      protected Object doInBackground(Object... objects) {


         // All dirty things go to being in background
         // Your cursor
         final Cursor cursor = X_SqLite.get(X_App.getContext()).GeDataAsCursor(SQL);

         if (cursor != null && cursor.getCount() > 0 && cursor.moveToFirst()) {

            // The magic part
            ScheduledExecutorService giveMeAsync = Executors.newSingleThreadScheduledExecutor();

            // Give time to processor to do her tasks and do you dirty task here
            // 50 millisec is enough per a single task
            giveMeAsync.scheduleAtFixedRate(() -> {
               ViewGroup viewInflated = ((Activity) this.context).findViewById(R.id.icon_view);

               // Give your data from Database
               // Do here all your things but take care some of these need to be done on UI thread (like adding view etc, you can do that on onProgressUpdate)
               final String data1 = cursor.getString(cursor.getColumnIndex("data1"));
               viewInflated.setTag(data1);

               // Send this to UI thread
               publishProgress(viewInflated, false);

               // Here test to cursor if is finish or not
               if (!cursor.moveToNext()) {
                  giveMeAsync.shutdownNow();
                  cursor.close();
                  publishProgress(null, true);
               }

            }, 1, 50, TimeUnit.MILLISECONDS);


         }

         // otherwise if cursor is emty close them
         if (cursor != null && cursor.getCount() == 0) {
            cursor.close();
            publishProgress(null, true);
         }


         return null;

      }


      @Override
      protected void onProgressUpdate(Object... values) {
         final View viewInflated = (View) values[0];
         final boolean isCursorEnded = (Boolean) values[0];

         // Here you is in main thread
         // You can do all what you do with the viewInflated


         if (isCursorEnded) {
            //raise your event to tell to your app reading data is finished
         }

      }


   }


}

Использование:

import android.app.Activity;
import android.os.Bundle;

class MyActivity extends Activity {
   @Override
   protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      new HelpUI.GetDataFromDBInAsyncMode(this, "Select * FROM YourTable").execute();
   }
} 

Заменяют переменные с Вашими переменными/объектами