Make the library compatible with java 1.7

gradle.properties

@@ -13,8 +13,8 @@ org.gradle.jvmargs=-Xmx1536m
 # org.gradle.parallel=true
 
 
-VERSION_NAME=1.0.4
-VERSION_CODE=10004
+VERSION_NAME=1.0.6
+VERSION_CODE=10006
 GROUP=com.github.mozilla
 
 POM_DESCRIPTION=This is an Android library containing an API to Mozilla's speech recognition services

mozillaspeechlibrary/build.gradle

@@ -28,8 +28,8 @@ android {
         }
     }
     compileOptions {
-        sourceCompatibility JavaVersion.VERSION_1_8
-        targetCompatibility JavaVersion.VERSION_1_8
+        sourceCompatibility = 1.7
+        targetCompatibility = 1.7
     }
 }
 

mozillaspeechlibrary/src/main/java/com/mozilla/speechlibrary/HotwordRecorder.java

@@ -72,7 +72,7 @@ public class HotwordRecorder {
                                              .build();
         mRecorder.startRecording();
         mRecording = true;
-        mThread = new Thread(() -> readAudio());
+        mThread = new Thread(readAudio);
         mThread.start();
     }
 
@@ -89,23 +89,26 @@ public class HotwordRecorder {
     /**
      * Read audio from the audio recorder stream.
      */
-    private void readAudio() {
-        int readBytes;
-        short[] buffer = new short[BUFFER_SIZE];
+    private Runnable readAudio =
+        new Runnable(){
+            public void run(){
+                int readBytes;
+                short[] buffer = new short[BUFFER_SIZE];
 
-        while (mRecording) {
-            readBytes = mRecorder.read(buffer, 0, BUFFER_SIZE);
+                while (mRecording) {
+                    readBytes = mRecorder.read(buffer, 0, BUFFER_SIZE);
 
-            if (readBytes != AudioRecord.ERROR_INVALID_OPERATION) {
-                for (short s : buffer) {
-                    writeShort(mPcmStream, s);
+                    if (readBytes != AudioRecord.ERROR_INVALID_OPERATION) {
+                        for (short s : buffer) {
+                            writeShort(mPcmStream, s);
+                        }
+                    }
                 }
-            }
-        }
 
-        mRecorder.release();
-        mRecorder = null;
-    }
+                mRecorder.release();
+                mRecorder = null;
+            }
+        };
 
     /**
      * Convert raw PCM data to a wav file.