Merge pull request #353 from thinkproductivity/mjmasn-patch-1

(Android) Fix UTF-8 related crashes

android/src/main/java/com/RNFetchBlob/RNFetchBlobFS.java

 import com.facebook.react.modules.core.DeviceEventManagerModule;
 
 import java.io.*;
-import java.nio.ByteBuffer;
 import java.nio.charset.Charset;
-import java.nio.charset.CharsetEncoder;
 import java.security.MessageDigest;
 import java.util.ArrayList;
 import java.util.HashMap;
             boolean error = false;
 
             if (encoding.equalsIgnoreCase("utf8")) {
-                CharsetEncoder encoder = Charset.forName("UTF-8").newEncoder();
                 while ((cursor = fs.read(buffer)) != -1) {
-                    encoder.encode(ByteBuffer.wrap(buffer).asCharBuffer());
                     String chunk = new String(buffer, 0, cursor);
                     emitStreamEvent(streamId, "data", chunk);
                     if(tick > 0)

android/src/main/java/com/RNFetchBlob/RNFetchBlobReq.java

 import java.net.SocketException;
 import java.net.SocketTimeoutException;
 import java.net.URL;
-import java.nio.ByteBuffer;
-import java.nio.charset.CharacterCodingException;
-import java.nio.charset.Charset;
-import java.nio.charset.CharsetEncoder;
 import java.security.KeyStore;
 import java.util.ArrayList;
 import java.util.Arrays;
                         // encoding will somehow break the UTF8 string format, to encode UTF8
                         // string correctly, we should do URL encoding before BASE64.
                         byte[] b = resp.body().bytes();
-                        CharsetEncoder encoder = Charset.forName("UTF-8").newEncoder();
                         if(responseFormat == ResponseFormat.BASE64) {
                             callback.invoke(null, RNFetchBlobConst.RNFB_RESPONSE_BASE64, android.util.Base64.encodeToString(b, Base64.NO_WRAP));
                             return;
                         }
-                        try {
-                            encoder.encode(ByteBuffer.wrap(b).asCharBuffer());
-                            // if the data contains invalid characters the following lines will be
-                            // skipped.
-                            String utf8 = new String(b);
-                            callback.invoke(null, RNFetchBlobConst.RNFB_RESPONSE_UTF8, utf8);
-                        }
-                        // This usually mean the data is contains invalid unicode characters, it's
-                        // binary data
-                        catch(CharacterCodingException ignored) {
-                            if(responseFormat == ResponseFormat.UTF8) {
-                                callback.invoke(null, RNFetchBlobConst.RNFB_RESPONSE_UTF8, "");
-                            }
-                            else {
-                                callback.invoke(null, RNFetchBlobConst.RNFB_RESPONSE_BASE64, android.util.Base64.encodeToString(b, Base64.NO_WRAP));
-                            }
-                        }
+                        String utf8 = new String(b);
+                        callback.invoke(null, RNFetchBlobConst.RNFB_RESPONSE_UTF8, utf8);
                     }
                 } catch (IOException e) {
                     callback.invoke("RNFetchBlob failed to encode response data to BASE64 string.", null);