从JSONArray获取String

Question

我有一个JSONArray，它存储以下内容：

[
"7d92a26dddcbd95c876479cf97afa404.jpg/500/500/0",
"2efb1955602498c0a82fd5c6f9611d0a.png/500/500/0",
"53633e49bc1a7725cf28cdbfbcd3f03b.jpg/500/500/0"
]

如何在JSONArray中获取字符串？我尝试jaImage.getString(0);但发生了java.lang.NullPointerException异常。
以下是我的代码：

for(int i = 0; i < jsonArrayStore.length(); i++)
{
    try 
    {
        JSONArray jaImage = jsonObjectStore[i].getJSONArray("images");
        if(jaImage == null)
        {
            Log.v("jaImage", "null");
        }
        else
            Log.v("jaImage", jaImage.toString());
        imgName[i] = new String[jaImage.length()];
        Bitmap sto_image;

        for (int j = 0; j < jaImage.length(); j++) 
        {
            String image = jaImage.getString(j);
            Log.v("jaImage", image);
        }

    } 
    catch (Exception e) 
    {
        Log.v("JSONArray jaImage Error", e.toString());
    }
}

修改
下面是我的logcat：

06-29 03:02:48.301  24594-24618/mobile.howddy.com.howddymobile V/jaImage﹕ ["7d92a26dddcbd95c876479cf97afa404.jpg\/500\/500\/0","2efb1955602498c0a82fd5c6f9611d0a.png\/500\/500\/0","53633e49bc1a7725cf28cdbfbcd3f03b.jpg\/500\/500\/0"]
06-29 03:02:48.301  24594-24618/mobile.howddy.com.howddymobile V/JSONArray jaImage Error﹕ java.lang.NullPointerException
06-29 03:02:48.301  24594-24618/mobile.howddy.com.howddymobile V/jaImage﹕ ["29778c73baca5d56d5a42c510cc5ae2e.png\/500\/500\/0","a35493d3aa674000566bfc3ef1053fcb.jpg\/500\/500\/0","a5fce41943837ba92f01a0b47aeb1054.jpg\/500\/500\/0"]
06-29 03:02:48.301  24594-24618/mobile.howddy.com.howddymobile V/JSONArray jaImage Error﹕ java.lang.NullPointerException
06-29 03:02:48.301  24594-24618/mobile.howddy.com.howddymobile V/jaImage﹕ ["e308cc58d082906d936a23eae4bc4708.jpg\/500\/500\/0","ab9ce8cadcc379582210d4b65bda9ef7.jpg\/500\/500\/0","867a82d768deff21dfcb9cd988a26d58.jpg\/500\/500\/0","72df45688fe4a70b6c0b1db2d2a2533e.jpg\/500\/500\/0"]
06-29 03:02:48.301  24594-24618/mobile.howddy.com.howddymobile V/JSONArray jaImage Error﹕ java.lang.NullPointerException