Merge "Revert "Workaround of Slice not pinned bug when using SliceCallback"" into rvc-dev

import android.content.ContentResolver;

import android.content.Context;

import android.net.Uri;

import android.os.AsyncTask;

import android.util.Log;

import androidx.annotation.VisibleForTesting;

import com.android.settings.overlay.FeatureFactory;

import com.android.settingslib.core.instrumentation.MetricsFeatureProvider;

import com.android.settingslib.utils.ThreadUtils;

import java.util.List;

import java.util.concurrent.Callable;

        // Register a trivial callback to pin the slice

        manager.registerSliceCallback(uri, callback);

        final Slice slice = manager.bindSlice(uri);

        // Workaround of unpinning slice in the same SerialExecutor of AsyncTask as SliceCallback's

        // observer.

        ThreadUtils.postOnMainThread(() ->

                AsyncTask.execute(() -> manager.unregisterSliceCallback(uri, callback))

        );

        manager.unregisterSliceCallback(uri, callback);

        return slice;

    }