版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/qq_31028313/article/details/79723639
assets目录下存放XXX.json格式的文件读取：
public static String getJsonTextFromAssetsFile(Context context, String fileName) {
StringBuilder sb = new StringBuilder();
try {
BufferedReader bf = new BufferedReader(new InputStreamReader(
context.getAssets().open(fileName+ ".json")));
String line;
while ((line = bf.readLine()) != null) {
sb.append(line);
}
} catch (IOException e) {
e.printStackTrace();
}
return sb.toString();
}