Stability and some memory leaks have been improved.

Author: yutokun

Assets/VR Text Input/Scenes/TextInputSample.cs

@@ -15,7 +15,8 @@ void OnJPInput (string str) {
 
 	//後ろの文字を消去します。仮。デリゲートでコールバックに変更する予定。
 	void OnBackspace () {
-		textMesh.text = textMesh.text.Remove (textMesh.text.Length - 1, 1);
+		if (textMesh.text.Length != 0)
+			textMesh.text = textMesh.text.Remove (textMesh.text.Length - 1, 1);
 	}
 
 	void Update () {

Assets/VR Text Input/Scripts/JapaneseInputHandler.cs

@@ -19,6 +19,8 @@ public class JapaneseInputHandler : MonoBehaviour {
 	bool afterVariationEntered;
 	int consonantIndex;
 
+	public Color baseColor = new Color (255, 255, 255), highlightColor = new Color (255, 0, 0);
+
 	TextHandler receiver;
 	KanjiConverter kanji;
 
@@ -101,8 +103,8 @@ void Update () {
 		//パネルの色を変えて振動させる
 		if (kanji.isConverting == false && currentHandPosition != prevPosition) {
 			OVRHaptics.RightChannel.Mix (hapticsClip);
-			selectorTexts [prevPosition].color = new Color (255, 255, 255);
-			selectorTexts [currentHandPosition].color = new Color (255, 0, 0);
+			selectorTexts [prevPosition].color = baseColor;
+			selectorTexts [currentHandPosition].color = highlightColor;
 		}
 
 		//針の位置管理

Assets/VR Text Input/Scripts/KanjiConverter.cs

@@ -80,7 +80,6 @@ IEnumerator Convert () {
 			//返ってくるJSONが配列[]のみで処理できないため変換
 			string result = www.downloadHandler.text.Replace ("[", "{");
 			result = result.Replace ("]", "}");
-			Debug.Log ("JSON: " + result);
 
 			//JSONをプログラムから扱える形式に変換
 			JSONObject j = new JSONObject (result);

Assets/VR Text Input/Scripts/TextHandler.cs

@@ -44,6 +44,8 @@ void Update () {
 	/// <param name="str">送信する文字</param>
 	/// <param name="deleteCount">一時入力エリアから削除する文字数</param>
 	public void Send (string str, int deleteCount) {
+		if (temporary.text.Length < deleteCount)
+			deleteCount = temporary.text.Length;
 		temporary.text = temporary.text.Remove (0, deleteCount);
 		foreach (var item in gameObjects) {
 			item.SendMessage ("OnJPInput", str, SendMessageOptions.DontRequireReceiver);