ListViewから編集画面に遷移し、更新させたい

家計簿アプリでListViewを使って一覧表示させています。ListViewの中にある編集したいデータ(青丸のデータ)をタップした時に、Realmに保存されているデータを編集画面(Fragment)で更新できるような機能を実装したいと考えています。タップされたデータにフォーカスを合わせたいと考えています。ListViewのデータをタップした時の処理を書く場所と書き方がわからず困っています。どなたかご教授お願いします。

kotlin
1
2open class Kakeibo : RealmObject() {
3    @PrimaryKey
4    var shushiId: Long = 0
5    var date: String? = null
6    var money: Int = 0
7    var shushi: String? = null
8    var genre: String? = null
9}

kotlin
1
2class kakeiboActivity : FragmentActivity(), DatePick.Callback {
3    private lateinit var realm: Realm
4    
5    private fun initRealm() {
6        val realmConfiguration = RealmConfiguration.Builder()
7            .deleteRealmIfMigrationNeeded()
8            .schemaVersion(0)
9            .build()
10        realm = Realm.getInstance(realmConfiguration)
11
12    }
13
14    override fun onCreate(savedInstanceState: Bundle?) {
15
16        super.onCreate(savedInstanceState)
17        setContentView(R.layout.activity_kakeibo)
18
19        val config = RealmConfiguration.Builder().deleteRealmIfMigrationNeeded().build()
20        val test_navi = findViewById<Button>(R.id.insert_button)
21
22
23        Realm.setDefaultConfiguration(config)
24
25        realm = Realm.getDefaultInstance()
26
27
28        var listView: ListView
29
30
31        insert_button.setOnClickListener {
32            val intent = Intent(application, Kakeibo_AddActivity::class.java)
33            startActivity(intent)
34        }
35        val kakeibo_navi: BottomNavigationItemView = findViewById(R.id.navigation_kakeibo)
36        val resito_navi: BottomNavigationItemView = findViewById(R.id.navigation_resito)
37        val buylist_navi: BottomNavigationItemView = findViewById(R.id.navigation_buylist)
38        val recipe_navi: BottomNavigationItemView = findViewById(R.id.navigation_analysis)
39        kakeibo_navi.setOnClickListener {
40            val intent = Intent(this, kakeiboActivity::class.java)
41            startActivity(intent)
42        }
43        buylist_navi.setOnClickListener {
44            val intent = Intent(this, buylistActivity::class.java)
45            startActivity(intent)
46        }
47        resito_navi.setOnClickListener {
48            val intent = Intent(this, resitoActivity::class.java)
49
50            startActivity(intent)
51        }
52        recipe_navi.setOnClickListener {
53            val intent = Intent(this, MainActivity::class.java)
54            startActivity(intent)
55        }
56
57        listView = findViewById(R.id.kakeibolist)
58
59        val Kakeibo = realm.where<Kakeibo>().findAll()
60        listView?.adapter = KakeiboAdapter(Kakeibo)
61
62     listView.setOnItemClickListener { parent, view, position, id ->  }
63        
64        }
65
66    override fun onDestroy() {
67        super.onDestroy()
68        realm.close()
69    }
70    override fun onDatePicked(year: Int,monthOfYear: Int, dayOfMonth: Int)  {
71        val str = String.format(Locale.US, "%d/%d", year, monthOfYear+1)
72        calendar.text = str
73        var kakeiboOfMonth = realm.where<Kakeibo>()
74            .beginsWith("date", "${year}/${monthOfYear+1}")
75            .findAll()
76        kakeiboOfMonth = kakeiboOfMonth.sort("date")
77        kakeibolist.adapter = KakeiboAdapter(kakeiboOfMonth)
78    }
79    override fun onAttachFragment(fragment : Fragment)  {
80        if(fragment is DatePick)   {
81            fragment.callback = this
82        }
83    }
84    fun showDatePickerDialog(view: View) {
85        val newFragment = DatePick()
86        newFragment.show(supportFragmentManager, "datePicker")
87    }
88
89}

kotlin
1
2open class KakeiboAdapter (data: OrderedRealmCollection<Kakeibo>?) : RealmBaseAdapter<Kakeibo>(data) {
3    private lateinit var mRealm: Realm
4
5    inner class ViewHolder(cell: View) {
6        var kakeiboDate = cell.findViewById<TextView>(R.id.item_date)
7        var kakeiboMoney = cell.findViewById<TextView>(R.id.item_money)
8        var kakeiboShushi = cell.findViewById<TextView>(R.id.item_shushi)
9        var kakeiboGenre = cell.findViewById<TextView>(R.id.item_genre)
10        var deleteicon: ImageView = cell.findViewById(R.id.delete_button)
11    }
12
13    override fun getView(position: Int, convertView: View?, parent: ViewGroup?): View {
14        val view: View
15        var viewHolder: ViewHolder? = null
16        mRealm = Realm.getDefaultInstance()
17
18
19        when (convertView) {
20            null -> {
21                val inflater = LayoutInflater.from(parent?.context)
22                view = inflater.inflate(R.layout.kakeibolist, parent, false)
23                viewHolder = ViewHolder(view)
24                view.tag = viewHolder
25            }
26            else -> {
27                view = convertView
28                viewHolder = view.tag as ViewHolder
29            }
30        }
31
32        adapterData?.run {
33
34            val Kakeibo = get(position)
35            viewHolder.kakeiboDate.text = Kakeibo.date.toString()
36            viewHolder.kakeiboMoney.text = Kakeibo.money.toString()
37            viewHolder.kakeiboShushi.text = Kakeibo.shushi
38            viewHolder.kakeiboGenre.text = Kakeibo.genre
39
40            viewHolder.kakeiboDate.setPadding(50, 50, 0, 0)
41            viewHolder.kakeiboMoney.setPadding(500, 100, 0, 0)
42            viewHolder.kakeiboShushi.setPadding(500, 20, 0, 0)
43            viewHolder.kakeiboGenre.setPadding(720, 50, 0, 0)
44
45            val listItem = getItem(position)
46           viewHolder.kakeiboDate.text = listItem!!.date.toString()
47            viewHolder.kakeiboShushi.text = listItem.shushi
48            viewHolder.kakeiboMoney.text = listItem.money.toString()
49            viewHolder.kakeiboGenre.text = listItem.genre
50
51            viewHolder.deleteicon.setOnClickListener {
52                var key = mRealm.where(Kakeibo::class.java)
53                    .equalTo("shushiId", listItem?.shushiId).findAll()
54                mRealm.executeTransaction {
55                    key.deleteAllFromRealm()
56                    notifyDataSetChanged()
57                }
58            }
59            return view!!
60        }
61    }
62}

xml
1<?xml version="1.0" encoding="utf-8"?>
2<android.support.constraint.ConstraintLayout
3        xmlns:android="http://schemas.android.com/apk/res/android"
4        xmlns:app="http://schemas.android.com/apk/res-auto"
5        xmlns:tools="http://schemas.android.com/tools"
6        android:id="@+id/container"
7        android:layout_width="match_parent"
8        android:layout_height="match_parent"
9        tools:context=".MainActivity">
10
11    <TextView
12            android:id="@+id/calendar"
13            android:layout_width="wrap_content"
14            android:layout_height="wrap_content"
15            android:layout_marginLeft="16dp"
16            android:text="@string/title_nengetu"
17            android:textSize="25dp"
18            android:onClick="showDatePickerDialog"
19            app:layout_constraintLeft_toLeftOf="parent"
20            app:layout_constraintTop_toTopOf="parent"
21            android:layout_marginTop="12dp"
22    />
23
24    <View
25            android:layout_width="match_parent"
26            android:layout_height="2.5dp"
27            android:background="@color/blackColor"
28            android:layout_marginLeft="10dp"
29            android:layout_marginRight="10dp"
30            app:layout_constraintRight_toRightOf="parent"
31            app:layout_constraintLeft_toLeftOf="parent"
32            app:layout_constraintBottom_toBottomOf="parent"
33            app:layout_constraintTop_toTopOf="parent"
34            app:layout_constraintHorizontal_bias="1.0"
35            app:layout_constraintVertical_bias="0.092"/>
36
37    <android.support.design.widget.BottomNavigationView
38            android:id="@+id/navigation"
39            android:layout_width="0dp"
40            android:layout_height="wrap_content"
41            android:layout_marginEnd="0dp"
42            android:layout_marginStart="0dp"
43            android:background="?android:attr/windowBackground"
44            app:layout_constraintBottom_toBottomOf="parent"
45            app:layout_constraintLeft_toLeftOf="parent"
46            app:layout_constraintRight_toRightOf="parent"
47            app:menu="@menu/navigation"/>
48    <ListView
49            android:id="@+id/kakeibolist"
50            android:layout_width="382dp"
51            android:layout_height="464dp"
52            app:layout_constraintLeft_toLeftOf="parent"
53            app:layout_constraintRight_toRightOf="parent"
54            app:layout_constraintTop_toTopOf="parent"
55            app:layout_constraintBottom_toBottomOf="parent"
56            app:layout_constraintHorizontal_bias="0.0"
57            app:layout_constraintVertical_bias="0.489"/>
58    <Button
59            android:id="@+id/insert_button"
60            android:layout_width="wrap_content"
61            android:layout_height="wrap_content"
62            android:text="@string/insert_gamen"
63            android:layout_marginBottom="300dp"
64            android:layout_marginLeft="260dp"
65            app:layout_constraintLeft_toLeftOf="parent"
66            app:layout_constraintRight_toRightOf="parent"
67            app:layout_constraintTop_toTopOf="parent"
68            app:layout_constraintBottom_toBottomOf="parent"
69            app:layout_constraintHorizontal_bias="0.0" app:layout_constraintVertical_bias="0.0"/>
70
71</android.support.constraint.ConstraintLayout>

kakajika

2018/12/12 11:20

setOnItemClickListenerでは何か問題があるということでしょうか？

asdfhorse

2018/12/13 01:59

いえ、タップしたListViewのデータの取得方法がよくわかりません。

行動規範の内容に同意します

回答1件

ベストアンサー

クリックされた位置のデータを取得したいということでしたら、 RealmBaseAdapter のgetItemメソッドが使えると思います。

kotlin
1listView.setOnItemClickListener { parent, view, position, id ->
2    val adapter = listView.adapter
3    if (adapter is KakeiboAdapter) {
4        val kakeibo = adapter.getItem(position)
5
6        // 編集画面へ...
7    }
8}