在使用leakcanary之后，我发现我的应用程序中有很多漏洞，大多数都是由于volley的匿名回调侦听器造成的。所以我写了一个util（下面）类，它使用静态回调和 WeakReference 参考 Context 还有匿名回电。但是，当我第一次打开应用程序时，即冷启动，在请求发出后不久，上下文就会被gced，但在热启动期间，一切正常。同样，这只发生在应用程序中的第一个活动中。
任何处理内存泄漏的替代方法都是受欢迎的。

public abstract class VUtil {

    public static final String TAG = VUtil.class.getSimpleName();

    public interface JsonCallback {
        void onSuccess(JSONObject response);
    }

    public interface StringCallback {
        void onSuccess(String response);
    }

    public interface ErrorCallback {
        void onError(VolleyError error);
    }

    public static class JsonResponseListener implements Response.Listener<JSONObject> {
        private final WeakReference<Context> mContextWeakReference;
        private final WeakReference<JsonCallback> mCallbackWeakReference;

        public JsonResponseListener(Context context, JsonCallback callback) {
            mContextWeakReference = new WeakReference<>(context);
            mCallbackWeakReference = new WeakReference<>(callback);
        }

        @Override
        public void onResponse(JSONObject jsonObject) {
            Context context = mContextWeakReference.get();
            JsonCallback callback = mCallbackWeakReference.get();
            if (context != null && callback != null) {
                callback.onSuccess(jsonObject);
            } else {
                Log.d(TAG, "Context was GCed");
            }
        }
    }

    public static class StringResponseListener implements Response.Listener<String> {
        private final WeakReference<Context> mContextWeakReference;
        private final WeakReference<StringCallback> mCallbackWeakReference;

        public StringResponseListener(Context context, StringCallback callback) {
            mContextWeakReference = new WeakReference<>(context);
            mCallbackWeakReference = new WeakReference<>(callback);
        }

        @Override
        public void onResponse(String response) {
            Context context = mContextWeakReference.get();
            StringCallback callback = mCallbackWeakReference.get();
            if (context != null && callback != null) {
                callback.onSuccess(response);
            } else {
                Log.d(TAG, "Context was GCed");
            }
        }
    }

    public static class ErrorListener implements Response.ErrorListener {

        private final WeakReference<Context> mContextWeakReference;
        private final WeakReference<ErrorCallback> mCallbackWeakReference;

        public ErrorListener(Context context, ErrorCallback callback) {
            mContextWeakReference = new WeakReference<>(context);
            mCallbackWeakReference = new WeakReference<>(callback);
        }

        @Override
        public void onErrorResponse(VolleyError error) {
            Context context = mContextWeakReference.get();
            ErrorCallback callback = mCallbackWeakReference.get();
            if (context != null && callback != null) {
                callback.onError(error);
            } else {
                Log.d(TAG, "Context was GCed");
            }
        }
    }
}