Mega Code Archive
Write and append string to file
<![CDATA[
//package com.totsp.bookworm.util;
import android.util.Log;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.Writer;
import java.nio.channels.FileChannel;
/**
* FileUtils.
*
* @author ccollins
*
*/
final class FileUtil {
// Object for intrinsic lock (per docs 0 length array "lighter" than a normal Object
public static final Object[] DATA_LOCK = new Object[0];
private FileUtil() {
}
/**
* Copy file.
*
* @param src
* @param dst
* @throws IOException
*/
public static void copyFile(final File src, final File dst) throws IOException {
FileChannel inChannel = new FileInputStream(src).getChannel();
FileChannel outChannel = new FileOutputStream(dst).getChannel();
try {
inChannel.transferTo(0, inChannel.size(), outChannel);
} finally {
if (inChannel != null) {
inChannel.close();
}
if (outChannel != null) {
outChannel.close();
}
}
}
/**
* Replace entire File with contents of String.
*
* @param fileContents
* @param file
* @return
*/
public static boolean writeStringAsFile(final String fileContents, final File file) {
boolean result = false;
try {
synchronized (DATA_LOCK) {
if (file != null) {
file.createNewFile(); // ok if returns false, overwrite
Writer out = new BufferedWriter(new FileWriter(file), 1024);
out.write(fileContents);
out.close();
result = true;
}
}
} catch (IOException e) {
// Log.e(Constants.LOG_TAG, "Error writing string data to file " + e.getMessage(), e);
}
return result;
}
/**
* Append String to end of File.
*
* @param appendContents
* @param file
* @return
*/
public static boolean appendStringToFile(final String appendContents, final File file) {
boolean result = false;
try {
synchronized (DATA_LOCK) {
if (file != null && file.canWrite()) {
file.createNewFile(); // ok if returns false, overwrite
Writer out = new BufferedWriter(new FileWriter(file, true), 1024);
out.write(appendContents);
out.close();
result = true;
}
}
} catch (IOException e) {
// Log.e(Constants.LOG_TAG, "Error appending string data to file " + e.getMessage(), e);
}
return result;
}
}
]]>