回答編集履歴
1
fragment3 でテキストを入力して ViewModel に保存し fragment1 で表示するようにしてみました
test
CHANGED
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@@ -122,6 +122,10 @@
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122
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val func1_mode = MutableLiveData<Int>(1)
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125
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+
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126
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val func1_text = MutableLiveData<String>("dummy")
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}
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```
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@@ -178,6 +182,12 @@
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}
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viewModel.func1_text.observe(viewLifecycleOwner) { text ->
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186
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func1_text.text = text
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}
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}
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}
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@@ -232,6 +242,10 @@
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import androidx.fragment.app.Fragment
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import androidx.fragment.app.activityViewModels
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import kotlinx.android.synthetic.main.fragment3.*
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class Fragment3 : Fragment() {
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@@ -248,6 +262,28 @@
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}
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+
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private val viewModel: SampleViewModel by activityViewModels()
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override fun onViewCreated(view: View, savedInstanceState: Bundle?) {
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super.onViewCreated(view, savedInstanceState)
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second_button.setOnClickListener {
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viewModel.func1_text.value = func1_edit.text.toString()
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viewModel.func1_mode.value = 1
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}
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}
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}
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```
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@@ -370,6 +406,8 @@
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xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:app="http://schemas.android.com/apk/res-auto"
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xmlns:tools="http://schemas.android.com/tools"
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android:layout_width="match_parent"
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@@ -378,23 +416,85 @@
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tools:context=".Fragment1">
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<Button
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android:id="@+id/first_button"
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android:layout_width="wrap_content"
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android:layout_height="wrap_content"
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android:text="to Fragment3"
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app:layout_constraintBottom_toBottomOf="parent"
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app:layout_constraintEnd_toEndOf="parent"
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app:layout_constraintStart_toStartOf="parent"
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app:layout_constraintTop_toBottomOf="@id/func1_text" />
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<TextView
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android:id="@+id/f
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android:id="@+id/func1_text"
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android:layout_width="0dp"
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android:layout_height="wrap_content"
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android:layout_marginStart="16dp"
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android:layout_marginEnd="16dp"
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app:layout_constraintBottom_toBottomOf="parent"
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app:layout_constraintEnd_toEndOf="parent"
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app:layout_constraintStart_toStartOf="parent"
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app:layout_constraintTop_toTopOf="parent" />
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</androidx.constraintlayout.widget.ConstraintLayout>
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```
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466
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467
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fragment2.xml
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468
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469
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```xml
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<?xml version="1.0" encoding="utf-8"?>
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<androidx.constraintlayout.widget.ConstraintLayout
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xmlns:android="http://schemas.android.com/apk/res/android"
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xmlns:tools="http://schemas.android.com/tools"
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android:layout_width="match_parent"
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android:layout_height="match_parent"
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tools:context=".Fragment2">
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<TextView
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android:layout_width="match_parent"
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android:layout_height="match_parent"
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-
/>
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android:text="Fragment2" />
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</androidx.constraintlayout.widget.ConstraintLayout>
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```
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396
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397
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-
fragment
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497
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+
fragment3.xml
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398
498
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399
499
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```xml
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400
500
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@@ -404,27 +504,79 @@
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405
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xmlns:android="http://schemas.android.com/apk/res/android"
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406
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+
xmlns:app="http://schemas.android.com/apk/res-auto"
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508
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407
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xmlns:tools="http://schemas.android.com/tools"
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408
510
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android:layout_width="match_parent"
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410
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android:layout_height="match_parent"
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413
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-
tools:context=".Fragment
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+
tools:context=".Fragment3">
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518
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519
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<EditText
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android:id="@+id/func1_edit"
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523
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android:layout_width="0dp"
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524
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android:layout_height="wrap_content"
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android:layout_marginStart="16dp"
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528
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android:layout_marginEnd="16dp"
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530
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android:ems="10"
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532
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android:text="Fragment3"
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app:layout_constraintBottom_toBottomOf="parent"
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536
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+
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537
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app:layout_constraintEnd_toEndOf="parent"
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538
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+
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539
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app:layout_constraintStart_toStartOf="parent"
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540
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541
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+
app:layout_constraintTop_toTopOf="parent" />
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542
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543
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<Button
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android:id="@+id/second_button"
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546
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android:layout_width="wrap_content"
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548
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549
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android:layout_height="wrap_content"
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550
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android:text="set Text"
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app:layout_constraintBottom_toBottomOf="parent"
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554
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555
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app:layout_constraintEnd_toEndOf="parent"
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556
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557
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app:layout_constraintStart_toStartOf="parent"
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558
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559
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app:layout_constraintTop_toBottomOf="@id/func1_edit" />
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414
560
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415
561
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<TextView
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416
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563
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android:id="@+id/textView"
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564
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417
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-
android:layout_width="
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565
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android:layout_width="wrap_content"
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418
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-
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566
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+
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419
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-
android:layout_height="
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567
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+
android:layout_height="wrap_content"
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420
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-
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568
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+
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421
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-
android:text="
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569
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+
android:text="Input Text:"
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570
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+
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571
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+
app:layout_constraintStart_toStartOf="@id/func1_edit"
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572
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+
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573
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+
app:layout_constraintBottom_toTopOf="@id/func1_edit" />
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422
574
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423
575
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</androidx.constraintlayout.widget.ConstraintLayout>
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424
576
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425
577
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```
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426
578
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427
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-
fragment
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579
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+
fragment4.xml
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428
580
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429
581
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```xml
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430
582
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@@ -440,40 +592,10 @@
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440
592
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441
593
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android:layout_height="match_parent"
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442
594
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595
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+
android:id="@+id/function1_container"
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596
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+
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443
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-
tools:context=".Fragment
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597
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+
tools:context=".Fragment4">
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444
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-
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445
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-
<TextView
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446
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-
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447
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-
android:layout_width="match_parent"
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448
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-
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449
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-
android:layout_height="match_parent"
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450
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-
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451
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-
android:text="Fragment3" />
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452
598
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453
599
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</androidx.constraintlayout.widget.ConstraintLayout>
|
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454
600
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|
455
601
|
```
|
|
456
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-
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|
457
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-
fragment4.xml
|
|
458
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-
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|
459
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-
```xml
|
|
460
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-
|
|
461
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-
<?xml version="1.0" encoding="utf-8"?>
|
|
462
|
-
|
|
463
|
-
<androidx.constraintlayout.widget.ConstraintLayout
|
|
464
|
-
|
|
465
|
-
xmlns:android="http://schemas.android.com/apk/res/android"
|
|
466
|
-
|
|
467
|
-
xmlns:tools="http://schemas.android.com/tools"
|
|
468
|
-
|
|
469
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-
android:layout_width="match_parent"
|
|
470
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-
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471
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-
android:layout_height="match_parent"
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472
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-
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473
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-
android:id="@+id/function1_container"
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|
474
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-
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475
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-
tools:context=".Fragment4">
|
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476
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-
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|
477
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-
</androidx.constraintlayout.widget.ConstraintLayout>
|
|
478
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-
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479
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-
```
|