2022 Apr. 29.
2022 Apr. 24.
出典 DialogFragment を利用したカスタムダイアログからActivityに値を返す | iPentec
参考 android開発 ダイアログから呼び出し元に値を渡す - rokkonet
概要
- 呼び出し元Activityに、値を取得するメソッドonReturnValue()を定義する
- ダイアログ内で呼び出し元のコンテクストを取得し、変数callingActivityに保持する
(Dialogクラスのコンストラクタの引数に呼び出し元のコンテクストがセットされている)
- ダイアログのOKボタンのonClickイベントで、callingActivity.onReturnValue()を実行する
build.gradle(Module: app)
plugins {
id 'com.android.application'
id 'org.jetbrains.kotlin.android'
}
android {
compileSdk 32
defaultConfig {
applicationId "net.sytes.rokkosan.mypassvaluefromdialogtoactivity"
minSdk 30
targetSdk 32
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
kotlinOptions {
jvmTarget = '1.8'
}
}
dependencies {
implementation 'androidx.core:core-ktx:1.7.0'
implementation 'androidx.appcompat:appcompat:1.4.1'
implementation 'com.google.android.material:material:1.5.0'
implementation 'androidx.constraintlayout:constraintlayout:2.1.3'
testImplementation 'junit:junit:4.13.2'
androidTestImplementation 'androidx.test.ext:junit:1.1.3'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'
}
activity_main.xml
xml version="1.0" encoding="utf-8"
<androidxconstraintlayoutwidgetConstraintLayout xmlnsandroid="http://schemas.android.com/apk/res/android"
xmlnsapp="http://schemas.android.com/apk/res-auto"
xmlnstools="http://schemas.android.com/tools"
androidlayout_width="match_parent"
androidlayout_height="match_parent"
toolscontext=".MainActivity">
<TextView
androidid="@+id/textViewInfo1"
androidlayout_width="wrap_content"
androidlayout_height="wrap_content"
androidtext="Hello World!"
applayout_constraintBottom_toTopOf="@id/buttonOpenDialog"
applayout_constraintLeft_toLeftOf="parent"
applayout_constraintRight_toRightOf="parent"
applayout_constraintTop_toTopOf="parent" />
<Button
androidid="@+id/buttonOpenDialog"
androidlayout_width="wrap_content"
androidlayout_height="wrap_content"
androidtext="@string/button_activity_label"
applayout_constraintBottom_toBottomOf="parent"
applayout_constraintLeft_toLeftOf="parent"
applayout_constraintRight_toRightOf="parent"
applayout_constraintTop_toBottomOf="@id/textViewInfo1" />
</androidxconstraintlayoutwidgetConstraintLayout>
my_dialog.xml
xml version="1.0" encoding="utf-8"
<androidxconstraintlayoutwidgetConstraintLayout xmlnsandroid="http://schemas.android.com/apk/res/android"
xmlnsapp="http://schemas.android.com/apk/res-auto"
xmlnstools="http://schemas.android.com/tools"
androidlayout_width="match_parent"
androidlayout_height="match_parent">
<TextView
androidid="@+id/textViewGuide"
androidlayout_width="wrap_content"
androidlayout_height="wrap_content"
androidtext="@string/text_view_guide"
applayout_constraintBottom_toTopOf="@id/editTextMessage"
applayout_constraintEnd_toEndOf="parent"
applayout_constraintStart_toStartOf="parent"
applayout_constraintTop_toBottomOf="@+id/buttonOk"
applayout_constraintTop_toTopOf="parent" />
<EditText
androidid="@+id/editTextMessage"
androidlayout_width="wrap_content"
androidlayout_height="wrap_content"
androidems="10"
androidinputType="textPersonName"
applayout_constraintBottom_toTopOf="@id/buttonOk"
applayout_constraintEnd_toEndOf="parent"
applayout_constraintStart_toStartOf="parent"
applayout_constraintTop_toBottomOf="@id/textViewGuide" />
<Button
androidid="@+id/buttonOk"
androidlayout_width="wrap_content"
androidlayout_height="wrap_content"
androidtext="@string/button_dialog_label"
applayout_constraintBottom_toBottomOf="parent"
applayout_constraintEnd_toEndOf="parent"
applayout_constraintStart_toStartOf="parent"
applayout_constraintTop_toBottomOf="@id/editTextMessage" />
</androidxconstraintlayoutwidgetConstraintLayout>
MainActivity.kt
package net.sytes.rokkosan.mypassvaluefromdialogtoactivity
import android.os.Bundle
import android.widget.Button
import android.widget.TextView
import androidx.appcompat.app.AppCompatActivity
class MainActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_main)
val buttonOpenDialog = findViewById<Button>(R.id.buttonOpenDialog)
buttonOpenDialog.setOnClickListener { showMyDialog() }
}
private fun showMyDialog() {
val cdf = CustomDialogFragment()
cdf.show(supportFragmentManager, "dialog")
}
public fun onReturnValue(value: String) {
val textViewInfo1 = findViewById<TextView>(R.id.textViewInfo1)
textViewInfo1.text = value
}
}
CustomDialogFragment.kt
package net.sytes.rokkosan.mypassvaluefromdialogtoactivity
import android.app.Dialog
import android.os.Bundle
import android.view.Window
import android.widget.Button
import android.widget.EditText
import androidx.fragment.app.DialogFragment
class CustomDialogFragment : DialogFragment() {
override fun onCreateDialog(savedInstanceState: Bundle?): Dialog {
val myDialog = Dialog(requireContext())
myDialog.getWindow()?.requestFeature(Window.FEATURE_NO_TITLE)
myDialog.setContentView(R.layout.my_dialog)
val editTextMessage = myDialog.findViewById<EditText>(R.id.editTextMessage)
myDialog.findViewById<Button>(R.id.buttonOk).setOnClickListener {
val text = editTextMessage.text.toString()
val callingActivity = activity as MainActivity
callingActivity.onReturnValue(text)
dismiss()
}
return myDialog
}
}