Example usage for android.support.v4.os OperationCanceledException OperationCanceledException

Introduction

In this page you can find the example usage for android.support.v4.os OperationCanceledException OperationCanceledException.

Prototype

public OperationCanceledException() 

Source Link

Usage

From source file:eu.geopaparazzi.library.database.RawSqlCursorLoader.java

@Override
public Cursor loadInBackground() {
    synchronized (this) {
        if (isLoadInBackgroundCanceled()) {
            throw new OperationCanceledException();
        }/*ww w  .j a  va2 s. co m*/
        mCancellationSignal = new CancellationSignal();
    }
    try {
        Cursor cursor = mDatabase.rawQuery(mSql, null);
        if (cursor != null) {
            try {
                // Ensure the cursor window is filled.
                cursor.getCount();
                cursor.registerContentObserver(mObserver);
            } catch (RuntimeException ex) {
                cursor.close();
                throw ex;
            }
        }
        return cursor;
    } finally {
        synchronized (this) {
            mCancellationSignal = null;
        }
    }
}

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From source file:cn.tangxb.imageselector.PhotoModelTaskLoader.java

@Override
public ArrayList<PhotoModel> loadInBackground() {
    synchronized (this) {
        if (isLoadInBackgroundCanceled()) {
            throw new OperationCanceledException();
        }/*from  www . java2s .c  o  m*/
        mCancellationSignal = new CancellationSignal();
    }
    try {
        Cursor cursor = ContentResolverCompat.query(getContext().getContentResolver(),
                MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
                new String[] { MediaStore.Images.ImageColumns.DATA, MediaStore.Images.ImageColumns.DATE_ADDED,
                        MediaStore.Images.ImageColumns.SIZE },
                null, null, MediaStore.Images.ImageColumns.DATE_ADDED, mCancellationSignal);
        if (cursor != null) {
            try {
                // Ensure the cursor window is filled.
                cursor.getCount();
                cursor.registerContentObserver(mObserver);
                mData = new ArrayList<>();

                if (cursor == null || !cursor.moveToNext())
                    return mData;
                cursor.moveToLast();
                do {
                    if (cursor.getLong(cursor.getColumnIndex(MediaStore.Images.ImageColumns.SIZE)) > 1024
                            * 10) {
                        PhotoModel photoModel = new PhotoModel();
                        photoModel.setOriginalPath(
                                cursor.getString(cursor.getColumnIndex(MediaStore.Images.ImageColumns.DATA)));
                        mData.add(photoModel);
                    }
                } while (cursor.moveToPrevious());
            } catch (RuntimeException ex) {
                cursor.close();
                throw ex;
            }
        }
        return mData;
    } finally {
        synchronized (this) {
            mCancellationSignal = null;
        }
    }
}

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From source file:io.requery.android.database.sqlite.SQLiteConnectionPool.java

private void cancelConnectionWaiterLocked(ConnectionWaiter waiter) {
    if (waiter.mAssignedConnection != null || waiter.mException != null) {
        // Waiter is done waiting but has not woken up yet.
        return;/*  w  w w.  j av  a2  s. com*/
    }

    // Waiter must still be waiting.  Dequeue it.
    ConnectionWaiter predecessor = null;
    ConnectionWaiter current = mConnectionWaiterQueue;
    while (current != waiter) {
        assert current != null;
        predecessor = current;
        current = current.mNext;
    }
    if (predecessor != null) {
        predecessor.mNext = waiter.mNext;
    } else {
        mConnectionWaiterQueue = waiter.mNext;
    }

    // Send the waiter an exception and unpark it.
    waiter.mException = new OperationCanceledException();
    LockSupport.unpark(waiter.mThread);

    // Check whether removing this waiter will enable other waiters to make progress.
    wakeConnectionWaitersLocked();
}

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