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Exchange of objects (or message) between AsyncTasks already started


Exchange of objects (or message) between AsyncTasks already started

By : Rafnagud
Date : November 20 2020, 01:01 AM
should help you out Your approach has several problems that can prove to be hard to tackle:
1) Mat objects are quite expensive in terms of memory and allocation time, so if you capture several frames per second and keep them in memory while the AsyncTask runs you can end up with OutOfMemory exceptions;
code :


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Android exchange data between running asynctasks

Android exchange data between running asynctasks


By : hardwire
Date : March 29 2020, 07:55 AM
I wish this help you Any reason you can't use the onProgressUpdate functionality? I may be confused by your use case... but an example might be the following:
code :
class MyActivity extends Activity {

  private AsyncTask<Uri,MyDataObject, MyResult> = new AsyncTask<Uri,MyDataObject, MyResult>() {
    private MyResult mResult;

    protected MyResult doInBackground(Uri... uris) {           
      int count = urls.length;
      mResult = new MyResult()

      for (int i = 0; i < count; i++) {
        MyDataObject anObject = mDataLoader.getObject(uris[i]);
        publishProgress(anObject);

        mResult.add(anObject);
        // Escape early if cancel() is called
        if (isCancelled()) break;
      }
      return totalSize;
    }

    protected void onProgressUpdate(MyDataObject... data) {
      addDataToUI(data[0]);
    }

    protected void onPostExecute(MyResult result) {
      Toast.makeText("All Done!", Toast.LENGTH_LONG).show();
    }
  }
}
Two different AsyncTasks not getting started from a foregroundService

Two different AsyncTasks not getting started from a foregroundService


By : Shishank Singh
Date : March 29 2020, 07:55 AM
seems to work fine The default executor for AsyncTask, starting from Honeycomb, is AsyncTask.SERIAL_EXECUTOR, which means that only one task is executing at a given time.
If you need parallelism, just use AsyncTask.THREAD_POOL_EXECUTOR, i.e.
code :
task.executeOnExecutor(AsyncTask.THREAD_POOL_EXECUTOR, params);
task.execute(params);
TimerConsumer [WARN] Error processing exchange. Exchange[Message: [Body is null]]

TimerConsumer [WARN] Error processing exchange. Exchange[Message: [Body is null]]


By : user3100159
Date : March 29 2020, 07:55 AM
wish help you to fix your issue I have been using camel 2.10.0 for quite some time but I need to upgrade to 2.11.1 to add some functionality. But before I got started I started getting this error after I upgraded. I tried searching for a solution but am having difficulty finding one. This is my route: , I think I have found the issue. First here is the stack trace.
code :
2015-01-30 15:13:47 TimerConsumer [WARN] Error processing exchange.  Exchange[Message: [Body is null]]. Caused by: [java.lang.IndexOutOfBoundsException - Index: 0, Size: 0]
java.lang.IndexOutOfBoundsException: Index: 0, Size: 0
    at java.util.ArrayList.RangeCheck(ArrayList.java:547)
    at java.util.ArrayList.get(ArrayList.java:322)
    at org.apache.camel.component.jdbc.JdbcProducer.setResultSet(JdbcProducer.java:226)
    at org.apache.camel.component.jdbc.JdbcProducer.createAndExecuteSqlStatement(JdbcProducer.java:146)
    at org.apache.camel.component.jdbc.JdbcProducer.processingSqlBySettingAutoCommit(JdbcProducer.java:82)
    at org.apache.camel.component.jdbc.JdbcProducer.process(JdbcProducer.java:63)
    at org.apache.camel.util.AsyncProcessorConverterHelper$ProcessorToAsyncProcessorBridge.process(AsyncProcessorConverterHelper.java:61)
    at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73)
    at org.apache.camel.processor.SendProcessor$2.doInAsyncProducer(SendProcessor.java:122)
    at org.apache.camel.impl.ProducerCache.doInAsyncProducer(ProducerCache.java:298)
    at org.apache.camel.processor.SendProcessor.process(SendProcessor.java:117)
    at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73)
    at org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:99)
    at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90)
    at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:72)
    at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73)
    at org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:99)
    at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90)
    at org.apache.camel.processor.interceptor.BacklogTracerInterceptor.process(BacklogTracerInterceptor.java:84)
    at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73)
    at org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:99)
    at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90)
    at org.apache.camel.processor.interceptor.TraceInterceptor.process(TraceInterceptor.java:91)
    at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73)
    at org.apache.camel.processor.RedeliveryErrorHandler.processErrorHandler(RedeliveryErrorHandler.java:391)
    at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:273)
    at org.apache.camel.processor.RouteContextProcessor.processNext(RouteContextProcessor.java:46)
    at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90)
    at org.apache.camel.processor.interceptor.DefaultChannel.process(DefaultChannel.java:335)
    at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73)
    at org.apache.camel.processor.Pipeline.process(Pipeline.java:117)
    at org.apache.camel.processor.Pipeline.process(Pipeline.java:80)
    at org.apache.camel.processor.RouteContextProcessor.processNext(RouteContextProcessor.java:46)
    at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90)
    at org.apache.camel.processor.UnitOfWorkProcessor.processAsync(UnitOfWorkProcessor.java:150)
    at org.apache.camel.processor.UnitOfWorkProcessor.process(UnitOfWorkProcessor.java:117)
    at org.apache.camel.processor.RouteInflightRepositoryProcessor.processNext(RouteInflightRepositoryProcessor.java:48)
    at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90)
    at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:73)
    at org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:99)
    at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:90)
    at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:72)
    at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:99)
    at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:86)
    at org.apache.camel.component.timer.TimerConsumer.sendTimerExchange(TimerConsumer.java:135)
    at org.apache.camel.component.timer.TimerConsumer$1.run(TimerConsumer.java:63)
    at java.util.TimerThread.mainLoop(Timer.java:512)
    at java.util.TimerThread.run(Timer.java:462)
protected void setResultSet(Exchange exchange, ResultSet rs) throws SQLException {
    List<Map<String, Object>> data = extractResultSetData(rs);

    exchange.getOut().setHeader(JdbcConstants.JDBC_ROW_COUNT, data.size());
    exchange.getOut().setBody(data);
}
protected void setResultSet(Exchange exchange, ResultSet rs) throws SQLException {
    List<Map<String, Object>> data = extractResultSetData(rs);

    exchange.getOut().setHeader(JdbcConstants.JDBC_ROW_COUNT, data.size());
    exchange.getOut().setHeader(JdbcConstants.JDBC_COLUMN_NAMES, data.get(0).keySet());
    exchange.getOut().setBody(data);
}
Data exchange between Activities, Asynctasks and Services

Data exchange between Activities, Asynctasks and Services


By : Pankaj Jain
Date : March 29 2020, 07:55 AM
like below fixes the issue Use AlarmManager to start an IntentService as often as necessary (in your example, it should be sufficient to start checking the temperature about two hours before the user plans to get up and maybe again after one hour and finally half an hour before the normal wakeup time. More often only in case of extreme weather conditions.
It's not necessary to check the temperature exactly at 03:33 a.m. so use setInexactRepeating(), this will be easier on the battery.
Apache Camel Message Exchange - can you iterate over the exchange to produce multiple output files from a single message

Apache Camel Message Exchange - can you iterate over the exchange to produce multiple output files from a single message


By : user2348223
Date : March 29 2020, 07:55 AM
wish help you to fix your issue For the thing you ask (split a message and write parts to files), there is way too much Java code in this question.
Without reading your question in full detail, here is the conceptional answer to your question.
code :
<route id="split">
    <from uri="[endpoint where full message arrives]"/>
    ...
    <split ...>
        ...
    </split>
    <to uri="direct:writeFiles"/>
</route>

<route id="writeFiles">
    <from uri="direct:writeFiles"/>
    <setHeader headerName="CamelFileName">
        <simple>...</simple>
    </setHeader>
    <to uri="file:directory?option=value"/>
</route>
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