I'm Trying to Write Logs to Custom Log.txt File on Android File using this code of Mine but then this method creates file but contains nothing. Basically I want to read previous contents of the file and then append my data with the existing content. The Code is as follows :
public static void write(String str) {
InputStream fileInputStream = null;
FileOutputStream fileOutpurStream = null;
try
{
fileInputStream = new FileInputStream(file);
fileOutpurStream = new FileOutputStream(file);
if(file.exists())
{
int ch = 0;
int current = 0;
StringBuffer buffer = new StringBuffer();
while((ch = fileInputStream.read()) != -1)
{
buffer.append((char) ch);
current++;
}
byte data[]=new byte[(int)file.length()];
fileInputStream.read(data);
fileOutpurStream.write(data);
fileOutpurStream.write(str.getBytes(),0,str.getBytes().length);
fileOutpurStream.flush();
}
else
{
file.createNewFile();
fileOutpurStream.write(str.getBytes(),0,str.getBytes().length);
fileOutpurStream.flush();
}
}
catch(Exception e)
{
e.printStackTrace();
}
finally
{
try
{
fileInputStream.close();
fileOutpurStream.flush();
fileOutpurStream.close();
fileOutpurStream = null;
fileInputStream = null;
}
catch (IOException e)
{
// TODO Auto-generated catch block
e.printStackTrace();
}
}