parameters.putString

new GraphRequest(
	AccessToken.getCurrentAccessToken(),
	"/me",
	parameters,
	HttpMethod.GET,
	new GraphRequest.Callback(){
		@Override
		public void onCompleted(GraphResponse response){
			if (response.getError() != null){
				Toast.makeText(AccountActivity.this, response.getError().getErrorMessage(), Toast.LENGTH_LONG).show();
				return;
			}

			JSONObject jsonResponse = response.getJSONObject();
			try {
				String locationStr = jsonResponse.getString("location");
				location.setText(locationStr);
			} catch (JSONException e){
				e.printStackTrace();
			}
		}
	}
).executeAsync();

{
	"location": {
		"id": "107413405955233",
		"name": "Huntington Beach, California"
	},
	"id": "128607281023401"
}

Bundle parameters = new Bundle();
parameters.putString("message", "Access Denied");
new GraphRequest(
	AccessToken.getCurrentAccessToken(),
	"/me/feed",
	parameters,
	HttpMethod.POST,
	new GraphRequest.Callback(){
		@Override
		public void onCompleted(GraphResponse response){
			if (response.getError() != null){
				Toast.makeText(MainActivity.this, response.getError().getErrorMessage(), Toast.LENGTH_LONG).show();
				return;
			}
		}
	}
).executeAsync();