Method does not override method from its superclass とエラーが、onActivityResultに出ます。

http://qiita.com/chibatching/items/add5e50921c2da5ee1c7

このようなサイトを参考にしています

Method does not override method from its superclass
とエラーが、onActivityResultに出ます。
どうすればいいでしょうか？

java
1public class CheckOverlayActivity extends Activity {
2
3        private final int OVERLAY_PERMISSION_REQ_CODE=20;
4
5        @Override
6        protected void onCreate(Bundle savedInstanceState) {
7            super.onCreate(savedInstanceState);
8            setContentView(R.layout.activity_check_overlay);
9            Log.d("MainActivity", "onCreate()");
10
11            if(Build.VERSION.SDK_INT >= 23){
12                Toast toast = Toast.makeText(this, "１、checkOverlayPermissin()を呼ぶ", Toast.LENGTH_SHORT);
13                toast.show();
14                checkOverlayPermission();
15            }
16            else{
17                locationActivity();
18            }
19        }
20
21        public void checkOverlayPermission() {
22            if (ActivityCompat.checkSelfPermission(this, Settings.ACTION_MANAGE_OVERLAY_PERMISSION) == PackageManager.PERMISSION_GRANTED) {
23
24                Toast toast = Toast.makeText(this, "すでに許可されてた", Toast.LENGTH_SHORT);
25                toast.show();
26                //コピペ多分間違い
27                locationActivity();
28            }else{
29                Toast toast = Toast.makeText(this, "２、requestOverlayPermission()を呼ぶ", Toast.LENGTH_SHORT);
30                toast.show();
31                requestOverlayPermission();
32            }
33        }
34
35
36        private void requestOverlayPermission(){
37            Toast toast = Toast.makeText(this, "３、requestOverlayPermission()呼ばれた", Toast.LENGTH_SHORT);
38            toast.show();
39            if (Build.VERSION.SDK_INT < 23) {
40            } else {
41    /* android 6 以上 */
42                if (!Settings.canDrawOverlays(this)) {
43                    Intent intent2 = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION, Uri.parse("package:" + getPackageName()));
44                    startActivityForResult(intent2, OVERLAY_PERMISSION_REQ_CODE);
45                }
46            }
47        }
48
49
50        // 結果の受け取り
51        @Override
52        protected void onActivityResult(int requestCode, int resultCode, Intent data) {
53
54            Toast toast = Toast.makeText(this, "４、結果の受け取り", Toast.LENGTH_SHORT);
55            toast.show();
56
57
58            //これは、使えない
59            // public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
60            //if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
61            //if (ActivityCompat.checkSelfPermission(this, Settings.ACTION_MANAGE_OVERLAY_PERMISSION) == PackageManager.PERMISSION_GRANTED) {
62
63
64             if(requestCode==OVERLAY_PERMISSION_REQ_CODE){
65
66                if (ActivityCompat.checkSelfPermission(this, Settings.ACTION_MANAGE_OVERLAY_PERMISSION) == PackageManager.PERMISSION_GRANTED) {
67                        locationActivity();
68                }else{
69                    Toast toast1 = Toast.makeText(this, "許可をしないと進めません", Toast.LENGTH_SHORT);
70                    toast1.show();
71                }
72             }
73        }
74
75
76        // Intent でLocation
77        private void locationActivity() {
78            Toast toast = Toast.makeText(this, "５、次の画面へ", Toast.LENGTH_SHORT);
79            toast.show();
80            Intent intent = new Intent(getApplication(), CheckStorageActivity.class);
81            startActivity(intent);
82        }
83    }
84
85
86