Java File类代码示例

import info.guardianproject.iocipher.File; //导入依赖的package包/类
public String closeFile() throws IOException {
    //Log.e(TAG, "closeFile") ;
    raf.close();
    File file = new File(localFilename);
    String newPath = file.getCanonicalPath();
    if(true) return newPath;

    newPath = newPath.substring(0,newPath.length()-4); // remove the .tmp
    //Log.e(TAG, "vfsCloseFile: rename " + newPath) ;
    File newPathFile = new File(newPath);
    boolean success = file.renameTo(newPathFile);
    if (!success) {
        throw new IOException("Rename error " + newPath );
    }
    return newPath;
}
 

import info.guardianproject.iocipher.File; //导入依赖的package包/类
@Override
public HashMap<Integer, T_PreKey> loadOmemoPreKeys(OmemoManager omemoManager) {
    File preKeyDirectory = hierarchy.getPreKeysDirectory(omemoManager);
    HashMap<Integer, T_PreKey> preKeys = new HashMap<>();

    if (preKeyDirectory == null) {
        return preKeys;
    }

    File[] keys = preKeyDirectory.listFiles();
    for (File f : keys != null ? keys : new File[0]) {

        try {
            byte[] bytes = readBytes(f);
            if (bytes == null) {
                continue;
            }
            T_PreKey p = keyUtil().preKeyFromBytes(bytes);
            preKeys.put(Integer.parseInt(f.getName()), p);

        } catch (IOException e) {
            //Do nothing
        }
    }
    return preKeys;
}
 

import info.guardianproject.iocipher.File; //导入依赖的package包/类
@Override
public HashMap<Integer, T_SigPreKey> loadOmemoSignedPreKeys(OmemoManager omemoManager) {
    File signedPreKeysDirectory = hierarchy.getSignedPreKeysDirectory(omemoManager);
    HashMap<Integer, T_SigPreKey> signedPreKeys = new HashMap<>();

    if (signedPreKeysDirectory == null) {
        return signedPreKeys;
    }

    File[] keys = signedPreKeysDirectory.listFiles();
    for (File f : keys != null ? keys : new File[0]) {

        try {
            byte[] bytes = readBytes(f);
            if (bytes == null) {
                continue;
            }
            T_SigPreKey p = keyUtil().signedPreKeyFromBytes(bytes);
            signedPreKeys.put(Integer.parseInt(f.getName()), p);

        } catch (IOException e) {
            //Do nothing
        }
    }
    return signedPreKeys;
}
 

import info.guardianproject.iocipher.File; //导入依赖的package包/类
@Override
public void removeAllRawSessionsOf(OmemoManager omemoManager, BareJid contact) {
    File contactsDirectory = hierarchy.getContactsDir(omemoManager, contact);
    String[] devices = contactsDirectory.list();

    for (String deviceId : devices != null ? devices : new String[0]) {
        int id;
        try {
            id = Integer.parseInt(deviceId);
        } catch (NumberFormatException e) {
            continue;
        }
        OmemoDevice device = new OmemoDevice(contact, id);
        File session = hierarchy.getContactsSessionPath(omemoManager, device);
        session.delete();
    }
}
 

import info.guardianproject.iocipher.File; //导入依赖的package包/类
private void writeInt(File target, int i) throws IOException {
    if (target == null) {
        throw new IOException("Could not write integer to null-path.");
    }

    FileHierarchy.createFile(target);

    IOException io = null;
    DataOutputStream out = null;
    try {
        out = new DataOutputStream(new FileOutputStream(target));
        out.writeInt(i);
    } catch (IOException e) {
        io = e;
    } finally {
        if (out != null) {
            out.close();
        }
    }

    if (io != null) {
        throw io;
    }
}
 

import info.guardianproject.iocipher.File; //导入依赖的package包/类
private void writeLong(File target, long i) throws IOException {
    if (target == null) {
        throw new IOException("Could not write long to null-path.");
    }

    FileHierarchy.createFile(target);

    IOException io = null;
    DataOutputStream out = null;
    try {
        out = new DataOutputStream(new FileOutputStream(target));
        out.writeLong(i);

    } catch (IOException e) {
        io = e;

    } finally {
        if (out != null) {
            out.close();
        }
    }

    if (io != null) {
        throw io;
    }
}
 

import info.guardianproject.iocipher.File; //导入依赖的package包/类
public static void deleteDirectory(File root) {
    File[] currList;
    Stack<File> stack = new Stack<>();
    stack.push(root);
    while (!stack.isEmpty()) {
        if (stack.lastElement().isDirectory()) {
            currList = stack.lastElement().listFiles();
            if (currList != null && currList.length > 0) {
                for (File curr : currList) {
                    stack.push(curr);
                }
            } else {
                stack.pop().delete();
            }
        } else {
            stack.pop().delete();
        }
    }
}
 

import info.guardianproject.iocipher.File; //导入依赖的package包/类
private boolean loadCredentials ()
{
	try
	{
		Properties props = new Properties();
		info.guardianproject.iocipher.File fileProps = new info.guardianproject.iocipher.File("/dropbox.properties");
		
		if (fileProps.exists())
		{
	        info.guardianproject.iocipher.FileInputStream fis = new info.guardianproject.iocipher.FileInputStream(fileProps);        
	        props.loadFromXML(fis);
	        
	        mStoredAccessToken = props.getProperty("dbtoken");
	        
	        return true;
		}
        
        
	}
	catch (IOException ioe)
	{
		Log.e("DbAuthLog", "Error I/O", ioe);
	}
	
	return false;
}
 

import info.guardianproject.iocipher.File; //导入依赖的package包/类
private void saveCredentials () throws IOException
{
	
	if (mSession != null && mSession.isLinked()
			&& mSession.getOAuth2AccessToken() != null)
	{
		
        mStoredAccessToken = mSession.getOAuth2AccessToken();
        
        Properties props = new Properties();
        props.setProperty("dbtoken", mStoredAccessToken);
        
        info.guardianproject.iocipher.File fileProps = new info.guardianproject.iocipher.File("/dropbox.properties");
        info.guardianproject.iocipher.FileOutputStream fos = new info.guardianproject.iocipher.FileOutputStream(fileProps);
        props.storeToXML(fos,"");
        fos.close();
        
	}
	else
	{
		Log.d("Dropbox","no valid dropbox session / not linked");
        
	}
}
 

import info.guardianproject.iocipher.File; //导入依赖的package包/类
private void startRecording ()
{
	String fileName = "audio" + new java.util.Date().getTime();
	info.guardianproject.iocipher.File fileOut = new info.guardianproject.iocipher.File(mFileBasePath,fileName);
	
	try {
		mIsRecording = true;
		
		if (useAAC)
			initAudio(fileOut.getAbsolutePath()+".aac");
		else
			initAudio(fileOut.getAbsolutePath()+".pcm");
		
		
		startAudioRecording();
		

	} catch (Exception e) {
		Log.d("Video","error starting video",e);
		Toast.makeText(this, "Error init'ing video: " + e.getLocalizedMessage(), Toast.LENGTH_LONG).show();
		finish();
	}
}
 

import info.guardianproject.iocipher.File; //导入依赖的package包/类
private void shareExternalFile (java.io.File fileExtern)
{
    Uri uri = Uri.fromFile(fileExtern);

    Intent intent = new Intent(Intent.ACTION_SEND);

    String fileExtension = MimeTypeMap.getFileExtensionFromUrl(uri.toString());
    String mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(fileExtension);
    if (fileExtension.equals("mp4") || fileExtension.equals("mkv") || fileExtension.equals("mov"))
        mimeType = "video/*";
    if (mimeType == null)
        mimeType = "application/octet-stream";

    intent.setDataAndType(uri, mimeType);
    intent.putExtra(Intent.EXTRA_STREAM, uri);
    intent.putExtra(Intent.EXTRA_SUBJECT, fileExtern.getName());
    intent.putExtra(Intent.EXTRA_TITLE, fileExtern.getName());

    try {
        startActivity(Intent.createChooser(intent, "Share this!"));
    } catch (ActivityNotFoundException e) {
        Log.e(TAG, "No relevant Activity found", e);
    }
}
 

import info.guardianproject.iocipher.File; //导入依赖的package包/类
@Override
protected File doInBackground(byte[]... data) {

	try {

		long mTime = System.currentTimeMillis();
		File fileSecurePicture = new File(mFileBasePath, "camerav_image_" + mTime + ".jpg");
		mResultList.add(fileSecurePicture.getAbsolutePath());

		FileOutputStream out = new FileOutputStream(fileSecurePicture);
		out.write(data[0]);
		out.flush();
		out.close();

		return fileSecurePicture;

	} catch (IOException ioe) {
		Log.e(StillCameraActivity.class.getName(), "error saving picture", ioe);
	}

	return null;
}
 

import info.guardianproject.iocipher.File; //导入依赖的package包/类
private void fillPathsArrayInReverse() {
    imagePaths = new ArrayList<String>();
    SecureFile[] childrenGalleryImageFiles = getGalleryDir().listFiles();
    for (int index = childrenGalleryImageFiles.length - 1; index >= 0; index--) {
        File imageFile = childrenGalleryImageFiles[index];
        imagePaths.add(imageFile.getPath());
    }

    if (imagePaths.isEmpty())
        emptyGalleryLabel.setVisibility(View.VISIBLE);
    else
        emptyGalleryLabel.setVisibility(View.GONE);
}
 

import info.guardianproject.iocipher.File; //导入依赖的package包/类
private void showItem (File file)
{
    try {
        String fileExtension = MimeTypeMap.getFileExtensionFromUrl(file.getAbsolutePath());
        String mimeType = MimeTypeMap.getSingleton().getMimeTypeFromExtension(fileExtension);
        if (mimeType.startsWith("image")) {
            Intent intent = new Intent(SecureGallery.this,ImageViewerActivity.class);
            intent.setType(mimeType);
            intent.putExtra("vfs", file.getAbsolutePath());
            startActivity(intent);
        }
    } catch (ActivityNotFoundException e) {
        Log.e(TAG, getString(R.string.error_message_no_relevant_activity_found), e);
    }
}
 

import info.guardianproject.iocipher.File; //导入依赖的package包/类
protected Bitmap getPreview(File fileImage) throws FileNotFoundException {
    Bitmap bitmap;

    synchronized (mBitCache) {
        bitmap = mBitCache.get(fileImage.getAbsolutePath());
        if (bitmap == null && mBitLoaders.get(fileImage.getAbsolutePath())==null) {
            BitmapWorkerThread bwt = new BitmapWorkerThread(fileImage);
            mBitLoaders.put(fileImage.getAbsolutePath(),bwt);
            bwt.start();
        }
    }

    return bitmap;
}