Android 9.0中的ArrayIndexOutOfBoundsException

Question

我只在Android 9.0生产中有一个奇怪的问题，该应用程序在生产中很长时间，这个问题始于Android 9.0

进程：com.ae.paris10，PID：18804 java.lang.ArrayIndexOutOfBoundsException：length = 984; regionStart = 0; regionLength = 1024 在java.util.Arrays.checkOffsetAndCount（Arrays.java:1719） 在libcore.io.IoBridge.write（IoBridge.java:487） 在java.io.FileOutputStream.write（FileOutputStream.java:186）

   private void copyStyleWithNewTilesPath() throws IOException {

        InputStream myinput = getContext()
                .getAssets().open("styleParis.json");


        String outfilename = "/data/data/" + Config.APPLICATION_ID + "/databases/styleParis.json";


        OutputStream myoutput = new FileOutputStream(outfilename);

        byte[] buffer = new byte[1024];
        int length;
        while ((length = myinput.read(buffer)) > 0) {

            String str = new String(buffer, "UTF-8");

            if (str.contains("file://mnt/obb/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/{z}/{x}/{y}.pbf")) {
  buffer = str.replace("file://mnt/obb/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/{z}/{x}/{y}.pbf", "file://" + obbPath + "/{z}/{x}/{y}.pbf").getBytes("UTF-8");
            }

            myoutput.write(buffer, 0, length); <<--- EXCEPTION HERE <<-----------
        }

        //Close the streams
        myoutput.flush();
        myoutput.close();
        myinput.close();
    }

我真的不明白发生了什么，因为FileOutputStream是Java和Android框架。

有人有什么想法吗？

Answer 1

我认为这将解决您的问题：

if (str.contains("file://mnt/obb/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/{z}/{x}/{y}.pbf"))
    myoutput.write(str.replace("file://mnt/obb/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/{z}/{x}/{y}.pbf", "file://" + obbPath + "/{z}/{x}/{y}.pbf").getBytes("UTF-8"));
else
    myoutput.write(buffer, 0, length);

Answer 2

if (str.contains("file://mnt/obb/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/{z}/{x}/{y}.pbf"))
    // write(byte[] b) :: Writes b.length bytes from the specified byte array to myoutput. 
    myoutput.write(str.replace("file://mnt/obb/xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/{z}/{x}/{y}.pbf", "file://" + obbPath + "/{z}/{x}/{y}.pbf").getBytes("UTF-8"));
else
    myoutput.write(buffer, 0, length);