Saving Objects(Synchronized) in Files in Android


We can save the all the synchronized Objects in Android using File Connections even if the Object is a customized or user defined object.

 Saving the Objects:


step 1: 

Open a file using the below code.

File suspend_f = new File("/data/data/com.rama.rama/cache/check.txt");

here i had saved the file in the application space in the device which will be removed when the application is un-installed. You can save it any where. but you should remember it for further fetching of the objects.

Step 2:

Opening an outputStream for the File object and writing the object to file as shown below.

                fos = new FileOutputStream(suspend_f);
                oos = new ObjectOutputStream(fos);
                oos.writeInt(10);
                for(int i=0 ;i<10;i++)
                oos.writeObject(new Lecture("Mahesh"+i, "sta", "end", "one", true));

We should read the objects in the same order that you write objects.


Reading the Objects:


step 1:


Opening the file object just as like the above step1.

Step 2:


Opening InputStream of the File Object and reading the objects in the same order that we write in the file.

                fis = new FileInputStream(suspend_f);
                 ois = new ObjectInputStream(fis);
                 String s = "";
                 int j=ois.readInt();
                 for(int i=0;i                 {
                _l = (Lecture)ois.readObject();
                s+=_l;
                 }

The whole code can be downloaded from this link.