Example usage for android.os FileObserver FileObserver

Introduction

In this page you can find the example usage for android.os FileObserver FileObserver.

Prototype

public FileObserver(String path, int mask) 

Source Link

Document

Create a new file observer for a certain file or directory.

Usage

From source file:fr.umlv.lastproject.smart.browser.FileLoader.java

@Override
protected void onStartLoading() {
    if (mData != null) {
        deliverResult(mData);//from   ww  w .  ja va2  s .com
    }

    if (mFileObserver == null) {
        mFileObserver = new FileObserver(mPath, FILE_OBSERVER_MASK) {
            @Override
            public void onEvent(int event, String path) {
                onContentChanged();
            }
        };
    }
    mFileObserver.startWatching();

    if (takeContentChanged() || mData == null) {
        forceLoad();
    }
}

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From source file:answer.example.answer.view.FileLoader.java

@Override
protected void onStartLoading() {
    if (mData != null)
        deliverResult(mData);/*from  ww w. ja v a2  s. c  o m*/

    if (mFileObserver == null) {
        mFileObserver = new FileObserver(mPath, FILE_OBSERVER_MASK) {
            @Override
            public void onEvent(int event, String path) {
                onContentChanged();
            }
        };
    }
    mFileObserver.startWatching();

    if (takeContentChanged() || mData == null)
        forceLoad();
}

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From source file:com.nononsenseapps.filepicker.local.LocalFilePickerFragment.java

/**
 * Get a loader that lists the Files in the current path,
 * and monitors changes.//w  w  w .ja  va 2  s  .com
 */
@Override
protected Loader<List<FileSystemObjectInterface>> getLoader() {
    return new AsyncTaskLoader<List<FileSystemObjectInterface>>(getActivity()) {
        FileObserver fileObserver;

        @Override
        public List<FileSystemObjectInterface> loadInBackground() {
            ArrayList<FileSystemObjectInterface> files = new ArrayList<FileSystemObjectInterface>();
            File[] listFiles = ((LocalFileSystemObject) currentPath).getFile().listFiles();

            if (listFiles != null) {
                for (java.io.File f : listFiles) {
                    if ((mode == SelectionMode.MODE_FILE || mode == SelectionMode.MODE_FILE_AND_DIR)
                            || f.isDirectory()) {
                        LocalFileSystemObject obj = new LocalFileSystemObject(f);
                        files.add(obj);
                    }
                }
            }
            return files;
        }

        /**
         * Handles a request to start the Loader.
         */
        @Override
        protected void onStartLoading() {
            super.onStartLoading();

            // handle if directory does not exist. Fall back to root.
            if (currentPath == null || !currentPath.isDir()) {
                currentPath = getRoot();
            }

            // Start watching for changes
            fileObserver = new FileObserver(currentPath.getFullPath(), FileObserver.CREATE | FileObserver.DELETE
                    | FileObserver.MOVED_FROM | FileObserver.MOVED_TO) {
                @Override
                public void onEvent(int event, String path) {
                    // Reload
                    onContentChanged();
                }
            };
            fileObserver.startWatching();

            forceLoad();
        }

        /**
         * Handles a request to completely reset the Loader.
         */
        @Override
        protected void onReset() {
            super.onReset();

            // Stop watching
            if (fileObserver != null) {
                fileObserver.stopWatching();
                fileObserver = null;
            }
        }
    };
}

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From source file:org.arakhne.afc.ui.android.filechooser.AsyncFileLoader.java

/**
 * {@inheritDoc}/*w  ww. j  a v a 2  s . c om*/
 */
@Override
protected void onStartLoading() {
    // A list is already available. Publish it.
    if (this.discoveredFiles != null)
        deliverResult(this.discoveredFiles);

    if (this.fileObserver == null) {
        this.fileObserver = new FileObserver(this.path.getAbsolutePath(),
                FileObserver.CREATE | FileObserver.DELETE | FileObserver.DELETE_SELF | FileObserver.MOVED_FROM
                        | FileObserver.MOVED_TO | FileObserver.MODIFY | FileObserver.MOVE_SELF) {
            @Override
            public void onEvent(int event, String path) {
                onContentChanged();
            }
        };
    }
    this.fileObserver.startWatching();

    if (takeContentChanged() || this.discoveredFiles == null)
        forceLoad();
}

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From source file:org.fourthline.android.feeds.filechooser.FileLoader.java

@Override
protected void onStartLoading() {
    if (data != null)
        deliverResult(data);// w w w  .java2  s  .c o m

    if (fileObserver == null) {
        fileObserver = new FileObserver(path, FILE_OBSERVER_MASK) {
            @Override
            public void onEvent(int event, String path) {
                onContentChanged();
            }
        };
    }
    fileObserver.startWatching();

    if (takeContentChanged() || data == null)
        forceLoad();
}

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From source file:org.protocoder.MainActivity.java

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_forfragments);
    c = this;//from   w ww .  j  a  v a  2s. com

    // Create the action bar programmatically

    if (!isWear()) {

        Toolbar toolbar = (Toolbar) findViewById(R.id.my_awesome_toolbar);
        setSupportActionBar(toolbar);

        //ActionBar actionBar = getSupportActionBar();
        //actionBar.setHomeButtonEnabled(true);
    }
    mProtocoder = Protocoder.getInstance(this);
    mProtocoder.init();

    /*
     *  Views
     */

    if (savedInstanceState == null) {
        addFragments();
    } else {
        mProtocoder.protoScripts.reinitScriptList();
    }

    // Check when a file is changed in the protocoder dir
    observer = new FileObserver(ProjectManager.FOLDER_USER_PROJECTS,
            FileObserver.CREATE | FileObserver.DELETE) {

        @Override
        public void onEvent(int event, String file) {
            if ((FileObserver.CREATE & event) != 0) {

                MLog.d(TAG, "File created [" + ProjectManager.FOLDER_USER_PROJECTS + "/" + file + "]");

                // check if its a "create" and not equal to probe because
                // thats created every time camera is
                // launched
            } else if ((FileObserver.DELETE & event) != 0) {
                MLog.d(TAG, "File deleted [" + ProjectManager.FOLDER_USER_PROJECTS + "/" + file + "]");

            }
        }
    };

    connectivityChangeReceiver = new ConnectivityChangeReceiver();

}

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From source file:com.glasshack.checkmymath.CheckMyMath.java

private void processPictureWhenReady(final String picturePath) {
    final File pictureFile = new File(picturePath);

    if (pictureFile.exists()) {
        // The picture is ready; process it.
        Log.e("Picture Path", picturePath);
        List<NameValuePair> postData = new ArrayList<NameValuePair>();
        postData.add(new BasicNameValuePair("file", picturePath));
        postData.add(new BasicNameValuePair("answer", "1"));
        postData.add(new BasicNameValuePair("submit", "Submit"));
        String postResp = post("http://54.187.58.53/glassmath.php", postData);
        evaluateResponse(postResp);//from   w w w .ja v a 2s  .c  om
    } else {
        // The file does not exist yet. Before starting the file observer, you
        // can update your UI to let the user know that the application is
        // waiting for the picture (for example, by displaying the thumbnail
        // image and a progress indicator).

        final File parentDirectory = pictureFile.getParentFile();
        FileObserver observer = new FileObserver(parentDirectory.getPath(),
                FileObserver.CLOSE_WRITE | FileObserver.MOVED_TO) {
            // Protect against additional pending events after CLOSE_WRITE
            // or MOVED_TO is handled.
            private boolean isFileWritten;

            @Override
            public void onEvent(int event, String path) {
                if (!isFileWritten) {
                    // For safety, make sure that the file that was created in
                    // the directory is actually the one that we're expecting.
                    File affectedFile = new File(parentDirectory, path);
                    isFileWritten = affectedFile.equals(pictureFile);

                    if (isFileWritten) {
                        stopWatching();

                        // Now that the file is ready, recursively call
                        // processPictureWhenReady again (on the UI thread).
                        runOnUiThread(new Runnable() {
                            @Override
                            public void run() {
                                processPictureWhenReady(picturePath);
                            }
                        });
                    }
                }
            }
        };
        observer.startWatching();
    }
}

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From source file:com.ihelp101.instagram.FilePickerFragment.java

/**
 * Get a loader that lists the Files in the current path,
 * and monitors changes.//from   www . jav  a2  s  . c om
 */
@Override
public Loader<SortedList<File>> getLoader() {
    return new AsyncTaskLoader<SortedList<File>>(getActivity()) {

        FileObserver fileObserver;

        @Override
        public SortedList<File> loadInBackground() {
            File[] listFiles = mCurrentPath.listFiles();
            final int initCap = listFiles == null ? 0 : listFiles.length;

            SortedList<File> files = new SortedList<>(File.class,
                    new SortedListAdapterCallback<File>(getDummyAdapter()) {
                        @Override
                        public int compare(File lhs, File rhs) {
                            return compareFiles(lhs, rhs);
                        }

                        @Override
                        public boolean areContentsTheSame(File file, File file2) {
                            return file.getAbsolutePath().equals(file2.getAbsolutePath())
                                    && (file.isFile() == file2.isFile());
                        }

                        @Override
                        public boolean areItemsTheSame(File file, File file2) {
                            return areContentsTheSame(file, file2);
                        }
                    }, initCap);

            files.beginBatchedUpdates();
            if (listFiles != null) {
                for (File f : listFiles) {
                    if (isItemVisible(f)) {
                        files.add(f);
                    }
                }
            }
            files.endBatchedUpdates();

            return files;
        }

        /**
         * Handles a request to start the Loader.
         */
        @Override
        protected void onStartLoading() {
            super.onStartLoading();

            // handle if directory does not exist. Fall back to root.
            if (mCurrentPath == null || !mCurrentPath.isDirectory()) {
                mCurrentPath = getRoot();
            }

            // Start watching for changes
            fileObserver = new FileObserver(mCurrentPath.getPath(), FileObserver.CREATE | FileObserver.DELETE
                    | FileObserver.MOVED_FROM | FileObserver.MOVED_TO) {

                @Override
                public void onEvent(int event, String path) {
                    // Reload
                    onContentChanged();
                }
            };
            fileObserver.startWatching();

            forceLoad();
        }

        /**
         * Handles a request to completely reset the Loader.
         */
        @Override
        protected void onReset() {
            super.onReset();

            // Stop watching
            if (fileObserver != null) {
                fileObserver.stopWatching();
                fileObserver = null;
            }
        }
    };
}

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From source file:com.home.young.filepicker.FilePickerFragment.java

/**
 * Get a loader that lists the Files in the current path,
 * and monitors changes./*  w  w w .j  ava 2s .  c o m*/
 */
@NonNull
@Override
public Loader<SortedList<File>> getLoader() {
    return new AsyncTaskLoader<SortedList<File>>(getActivity()) {

        FileObserver fileObserver;

        @Override
        public SortedList<File> loadInBackground() {
            File[] listFiles = mCurrentPath.listFiles();
            final int initCap = listFiles == null ? 0 : listFiles.length;

            SortedList<File> files = new SortedList<>(File.class,
                    new SortedListAdapterCallback<File>(getDummyAdapter()) {
                        @Override
                        public int compare(File lhs, File rhs) {
                            return compareFiles(lhs, rhs);
                        }

                        @Override
                        public boolean areContentsTheSame(File file, File file2) {
                            return file.getAbsolutePath().equals(file2.getAbsolutePath())
                                    && (file.isFile() == file2.isFile());
                        }

                        @Override
                        public boolean areItemsTheSame(File file, File file2) {
                            return areContentsTheSame(file, file2);
                        }
                    }, initCap);

            files.beginBatchedUpdates();
            if (listFiles != null) {
                for (java.io.File f : listFiles) {
                    if (isItemVisible(f)) {
                        files.add(f);
                    }
                }
            }
            files.endBatchedUpdates();

            return files;
        }

        /**
         * Handles a request to start the Loader.
         */
        @Override
        protected void onStartLoading() {
            super.onStartLoading();

            // handle if directory does not exist. Fall back to root.
            if (mCurrentPath == null || !mCurrentPath.isDirectory()) {
                mCurrentPath = getRoot();
            }

            // Start watching for changes
            fileObserver = new FileObserver(mCurrentPath.getPath(), FileObserver.CREATE | FileObserver.DELETE
                    | FileObserver.MOVED_FROM | FileObserver.MOVED_TO) {

                @Override
                public void onEvent(int event, String path) {
                    // Reload
                    onContentChanged();
                }
            };
            fileObserver.startWatching();

            forceLoad();
        }

        /**
         * Handles a request to completely reset the Loader.
         */
        @Override
        protected void onReset() {
            super.onReset();

            // Stop watching
            if (fileObserver != null) {
                fileObserver.stopWatching();
                fileObserver = null;
            }
        }
    };
}

---

From source file:cn.tycoon.lighttrans.fileManager.FilePickerFragment.java

/**
 * Get a loader that lists the Files in the current path,
 * and monitors changes.//from  w  ww  .  j av a  2  s  .com
 */
@Override
public Loader<SortedList<File>> getLoader() {
    return new AsyncTaskLoader<SortedList<File>>(getActivity()) {

        FileObserver fileObserver;

        @Override
        public SortedList<File> loadInBackground() {
            File[] listFiles = mCurrentPath.listFiles();
            final int initCap = listFiles == null ? 0 : listFiles.length;

            SortedList<File> files = new SortedList<>(File.class,
                    new SortedListAdapterCallback<File>(getDummyAdapter()) {
                        @Override
                        public int compare(File lhs, File rhs) {
                            return compareFiles(lhs, rhs);
                        }

                        @Override
                        public boolean areContentsTheSame(File file, File file2) {
                            return file.getAbsolutePath().equals(file2.getAbsolutePath())
                                    && (file.isFile() == file2.isFile());
                        }

                        @Override
                        public boolean areItemsTheSame(File file, File file2) {
                            return areContentsTheSame(file, file2);
                        }
                    }, initCap);

            files.beginBatchedUpdates();
            if (listFiles != null) {
                for (java.io.File f : listFiles) {
                    //if (isItemVisible(f)) {
                    files.add(f);
                    //}
                }
            }
            files.endBatchedUpdates();

            return files;
        }

        /**
         * Handles a request to start the Loader.
         */
        @Override
        protected void onStartLoading() {
            super.onStartLoading();

            // handle if directory does not exist. Fall back to root.
            if (mCurrentPath == null || !mCurrentPath.isDirectory()) {
                mCurrentPath = getRoot();
            }

            // Start watching for changes
            fileObserver = new FileObserver(mCurrentPath.getPath(), FileObserver.CREATE | FileObserver.DELETE
                    | FileObserver.MOVED_FROM | FileObserver.MOVED_TO) {

                @Override
                public void onEvent(int event, String path) {
                    // Reload
                    onContentChanged();
                }
            };
            fileObserver.startWatching();

            forceLoad();
        }

        /**
         * Handles a request to completely reset the Loader.
         */
        @Override
        protected void onReset() {
            super.onReset();

            // Stop watching
            if (fileObserver != null) {
                fileObserver.stopWatching();
                fileObserver = null;
            }
        }
    };
}

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