if (_searchAsyncTask != null) {
    // cancel if already running
    _searchAsyncTask.cancel(true);
}
_searchAsyncTask = new SearchAsyncTask(this);
_searchAsyncTask.execute(data);

java.lang.IllegalStateException: Cannot execute task: the task has already been executed (a task can be executed only once)

if (_searchAsyncTask == null) {
    _searchAsyncTask = new SearchAsyncTask();
}

if (mThreadExecutor != null && !mThreadExecutor.isShutdown()) {
    mThreadExecutor.shutdownNow();
}

if (mThreadExecutor == null || mThreadExecutor.isShutdown()) {
    mThreadExecutor = Executors.newSingleThreadExecutor();
}

if (_searchAsyncTask.getStatus() != Status.RUNNING) {
    _searchAsyncTask.executeOnExecutor(mThreadExecutor);
}