赤いボタンを押しても画面遷移ができません

以下のようにコードを打ち、fabボタンを押しても画面遷移できません。
コードに何か間違いがあるのでしょう？
ご回答よろしくおい願いします。

kotlin
1**(AndroidManifests.xml)**
2
3<?xml version="1.0" encoding="utf-8"?>
4<manifest xmlns:android="http://schemas.android.com/apk/res/android"
5    package="com.example.bloodpressure">
6
7    <application
8        android:name=".CustomApplication"
9        android:allowBackup="true"
10        android:icon="@mipmap/ic_launcher"
11        android:label="@string/app_name"
12        android:roundIcon="@mipmap/ic_launcher_round"
13        android:supportsRtl="true"
14        android:theme="@style/AppTheme">
15        <activity android:name=".EditActivity" />
16        <activity
17            android:name=".MainActivity"
18            android:label="@string/app_name"
19            android:theme="@style/AppTheme.NoActionBar">
20            <intent-filter>
21                <action android:name="android.intent.action.MAIN" />
22
23                <category android:name="android.intent.category.LAUNCHER" />
24            </intent-filter>
25        </activity>
26    </application>
27
28</manifest>

kotlin
1
2**(MainActivity.kt)**
3
4 override fun onCreate(savedInstanceState: Bundle?) {
5        super.onCreate(savedInstanceState)
6        setContentView(R.layout.activity_main)
7        setSupportActionBar(toolbar)
8        realm = Realm.getDefaultInstance()
9
10        fab.setOnClickListener { view ->
11            val intent = Intent(this, EditActivity::class.java)
12            startActivity(intent)
13        }
14    }

kotlin
1**(EditActivity.kt)**
2
3 override fun onCreate(savedInstanceState: Bundle?) {
4        super.onCreate(savedInstanceState)
5        setContentView(R.layout.activity_edit)
6        realm = Realm.getDefaultInstance()
7
8        val bpId = intent.getLongExtra("id", 0L)
9        if (bpId > 0L) {
10            val bloodPress = realm.where<BloodPress>()
11                .equalTo("id", bpId).findFirst()
12            maxEdit.setText(bloodPress?.max.toString())
13            minEdit.setText(bloodPress?.min.toString())
14            pulseEdit.setText(bloodPress?.pulse.toString())
15            deleteBtn.visibility = View.VISIBLE
16        } else {
17            deleteBtn.visibility = View.INVISIBLE
18        }
19
20        saveBtn.setOnClickListener {
21
22            var max: Long = 0
23            var min: Long = 0
24            var pulse: Long = 0
25
26            if (!maxEdit.text.isNullOrEmpty()) {
27                max = maxEdit.text.toString().toLong()
28            }
29
30            if (!minEdit.text.isNullOrEmpty()) {
31                min = minEdit.text.toString().toLong()
32            }
33            if (!pulseEdit.text.isNullOrEmpty()) {
34                pulse = pulseEdit.text.toString().toLong()
35            }
36
37            when (bpId) {
38                0L -> {
39
40                    realm.executeTransaction {
41                        val maxId = realm.where<BloodPress>().max("id")
42                        val nextId = (maxId?.toLong() ?: 0L) + 1L
43                        val bloodPress = realm.createObject<BloodPress>(nextId)
44                        bloodPress.dateTime = Date()
45                        bloodPress.max = max
46                        bloodPress.min = min
47                        bloodPress.pulse = pulse
48                    }
49                }
50
51                else -> {
52
53                    realm.executeTransaction {
54                        val bloodPress = realm.where<BloodPress>()
55                            .equalTo("id", bpId).findFirst()
56                        bloodPress?.max = max
57                        bloodPress?.min = min
58                        bloodPress?.pulse = pulse
59
60                    }
61
62
63                }
64            }
65
66            Toast.makeText(applicationContext, "保存しました", Toast.LENGTH_SHORT).show()
67            finish()
68        }
69
70        deleteBtn.setOnClickListener {
71
72            realm.executeTransaction {
73                val bloodPress = realm.where<BloodPress>()
74                    .equalTo("id", bpId)
75                    ?.findFirst()
76                    ?.deleteFromRealm()
77            }
78            Toast.makeText(applicationContext, "削除しました", Toast.LENGTH_SHORT).show()
79            finish()
80
81        }
82    }   
83