iCloud for Unity let’s you put your data in the cloud as easy as A.B.C.

Available from those stores:

Unity Asset Store – $75.00

v2.0.2 – Unity 3.5.7+ – Requires Unity iOS (Basic or Pro) or Unity Pro

Simple file manipulation with text contents

This example demonstrates straight-forward methods to write contents into a text file, read it back and then delete it.

// Use this variable to store our text file contents for display
string results = "";

// Basic OnGUI buttons for triggering our methods and label for results displaying
void OnGUI() {
	if (GUILayout.Button("Save to Text File")) {
		StartCoroutine(SaveFile());
	}

	if (GUILayout.Button("Read from Text File")) {
		StartCoroutine(LoadFile());
	}

	if (GUILayout.Button("Delete Text File")) {
		StartCoroutine(DeleteFile());
	}

	// Display results
	GUILayout.Label("Results : " + results);
}

// SaveFile uses JCloudDocument.FileWriteAllBytes
// Please note we do not yield as we don't bother checking if it succeeded here
IEnumerator SaveFile() {
	System.Text.UTF8Encoding encoder = new System.Text.UTF8Encoding();
	byte[] textBytes = encoder.GetBytes("Some simple text.");
	JCloudDocument.FileWriteAllBytes("mytextfile.txt", textBytes);
}

// LoadFile uses JCloudDocument.FileReadAllBytes
IEnumerator LoadFile() {
	JCloudDocumentOperation operation;

	// Let's check file exists first
	operation = JCloudDocument.FileExists("mytextfile.txt");
	while (operation.finished == false) {
		yield return null; // Wait for 1 frame
	}

	if ((bool)operation.result == false) {
		results = "Text file does not exist.";
		yield break; // yield break ends the coroutine here
	}

	// Wait for file reading
	operation = JCloudDocument.FileReadAllBytes("mytextfile.txt");
	while (operation.finished == false) {
		results = "Opening text file (" + operation.progress + "%)";
		yield return null; // Wait for 1 frame
	}
	
	// Get the result
	if (operation.success)
	{
		byte[] textBytes = operation.result as byte[];
	
		// Make sure we read something
		if (textBytes != null) {
			System.Text.UTF8Encoding encoder = new System.Text.UTF8Encoding();
			results = encoder.GetString(textBytes);
		} else {
			results = "Text file is empty.";
		}
	} else {
		results = "Failed to read text file.";
	}
}

// DeleteFile uses JCloudDocument.FileDelete
// Please note we do not yield as we don't bother cheking if it succeeded here
IEnumerator DeleteFile() {
	JCloudDocument.FileDelete("mytextfile.txt");
}

Simple preferences settings with key-value store

This example sets an integer key, reads it back and then deletes it.

// Use this variable to store our power status
int powerStatus = 0;

// Basic OnGUI buttons for triggering our methods and label for results displaying
void OnGUI() {
	// Set Power Status uses JCloudData.SetInt and JCloudData.Save
	if (GUILayout.Button("Set Power Status")) {
		JCloudData.SetInt("PowerStatus", 9000);
		JCloudData.Save();
	}
	
	// Get Power Status uses JCloudData.GetInt
	if (GUILayout.Button("Get Power Status")) {
		powerStatus = JCloudData.GetInt("PowerStatus");
	}
	
	// Reset Power Status uses JCloudData.DeleteKey and JCloudData.Save
	if (GUILayout.Button("Reset Power Status")) {
		JCloudData.DeleteKey("PowerStatus");
		JCloudData.Save();
		powerStatus = 0;
	}
	
	// Display results
	GUILayout.Label("Power status is over " + powerStatus);
}