android: expose request/abandon audio focus

Author: zxcpoiu

android/src/main/java/com/zxcpoiu/incallmanager/InCallManagerModule.java

@@ -639,17 +639,22 @@ private void stopEvents() {
         turnScreenOn();
     }
 
-    private void requestAudioFocus() {
-        if (android.os.Build.VERSION.SDK_INT >= 26) {
-            requestAudioFocusV26();
-        } else {
-            requestAudioFocusOld();
-        }
+    @ReactMethod
+    public void requestAudioFocusJS(Promise promise) {
+        promise.resolve(requestAudioFocus());
+    }
+
+    private String requestAudioFocus() {
+        String requestAudioFocusResStr = (android.os.Build.VERSION.SDK_INT >= 26)
+                ? requestAudioFocusV26()
+                : requestAudioFocusOld();
+        Log.d(TAG, "requestAudioFocus(): res = " + requestAudioFocusResStr);
+        return requestAudioFocusResStr;
     }
 
-    private void requestAudioFocusV26() {
+    private String requestAudioFocusV26() {
         if (isAudioFocused) {
-            return;
+            return "";
         }
 
         if (mAudioAttributes == null) {
@@ -687,12 +692,12 @@ private void requestAudioFocusV26() {
                 break;
         }
 
-        Log.d(TAG, "requestAudioFocus(): res = " + requestAudioFocusRes + " - " + requestAudioFocusResStr);
+        return requestAudioFocusResStr;
     }
 
-    private void requestAudioFocusOld() {
+    private String requestAudioFocusOld() {
         if (isAudioFocused) {
-            return;
+            return "";
         }
 
         int requestAudioFocusRes = audioManager.requestAudioFocus(mOnFocusChangeListener, AudioManager.STREAM_VOICE_CALL, AudioManager.AUDIOFOCUS_GAIN_TRANSIENT);
@@ -711,20 +716,25 @@ private void requestAudioFocusOld() {
                 break;
         }
 
-        Log.d(TAG, "requestAudioFocus(): res = " + requestAudioFocusRes + " - " + requestAudioFocusResStr);
+        return requestAudioFocusResStr;
     }
 
-    private void abandonAudioFocus() {
-        if (android.os.Build.VERSION.SDK_INT >= 26) {
-            abandonAudioFocusV26();
-        } else {
-            abandonAudioFocusOld();
-        }
+    @ReactMethod
+    public void abandonAudioFocusJS(Promise promise) {
+        promise.resolve(abandonAudioFocus());
+    }
+
+    private String abandonAudioFocus() {
+        String abandonAudioFocusResStr = (android.os.Build.VERSION.SDK_INT >= 26)
+                ? abandonAudioFocusV26()
+                : abandonAudioFocusOld();
+        Log.d(TAG, "abandonAudioFocus(): res = " + abandonAudioFocusResStr);
+        return abandonAudioFocusResStr;
     }
 
-    private void abandonAudioFocusV26() {
+    private String abandonAudioFocusV26() {
         if (!isAudioFocused || mAudioFocusRequest == null) {
-            return;
+            return "";
         }
 
         int abandonAudioFocusRes = audioManager.abandonAudioFocusRequest(mAudioFocusRequest);
@@ -741,12 +751,13 @@ private void abandonAudioFocusV26() {
                 abandonAudioFocusResStr = "AUDIOFOCUS_REQUEST_UNKNOWN";
                 break;
         }
-        Log.d(TAG, "abandonAudioFocus(): res = " + abandonAudioFocusRes + " - " + abandonAudioFocusResStr);
+
+        return abandonAudioFocusResStr;
     }
 
-    private void abandonAudioFocusOld() {
+    private String abandonAudioFocusOld() {
         if (!isAudioFocused) {
-            return;
+            return "";
         }
 
         int abandonAudioFocusRes = audioManager.abandonAudioFocus(null);
@@ -765,7 +776,7 @@ private void abandonAudioFocusOld() {
                 break;
         }
 
-        Log.d(TAG, "abandonAudioFocus(): res = " + abandonAudioFocusRes + " - " + abandonAudioFocusResStr);
+        return abandonAudioFocusResStr;
     }
 
     @ReactMethod

index.js

@@ -153,6 +153,22 @@ class InCallManager {
         let result = await _InCallManager.chooseAudioRoute(route);
         return result;
     }
+
+    async requestAudioFocus() {
+        if (Platform.OS === 'android') {
+            return await _InCallManager.requestAudioFocusJS();
+        } else {
+            console.log("ios doesn't support requestAudioFocus()");
+        }
+    }
+
+    async abandonAudioFocus() {
+        if (Platform.OS === 'android') {
+            return await _InCallManager.abandonAudioFocusJS();
+        } else {
+            console.log("ios doesn't support requestAudioFocus()");
+        }
+    }
 }
 
 export default new InCallManager();