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apply plugin: 'com.android.application'
android {
compileSdkVersion 28
defaultConfig {
applicationId "com.example.scoreboard"
minSdkVersion 19
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
android.defaultConfig.vectorDrawables.useSupportLibrary = true
dataBinding.enabled = true
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'androidx.appcompat:appcompat:1.0.2'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test:runner:1.2.0'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
implementation 'androidx.lifecycle:lifecycle-extensions:2.0.0'
implementation 'androidx.lifecycle:lifecycle-viewmodel-savedstate:1.0.0-alpha01'
}
package com.example.scoreboard;
import androidx.lifecycle.MutableLiveData;
import androidx.lifecycle.SavedStateHandle;
import androidx.lifecycle.ViewModel;
public class MyViewModel extends ViewModel {
private SavedStateHandle savedStateHandle;
private Integer scoreA,scoreB;
public MyViewModel(SavedStateHandle savedStateHandle){
this.savedStateHandle = savedStateHandle;
}
public MutableLiveData<Integer> getTeamA() {
if (!savedStateHandle.contains(MainActivity.TEAMA)) {
savedStateHandle.set(MainActivity.TEAMA,0);
}
return savedStateHandle.getLiveData(MainActivity.TEAMA);
}
public MutableLiveData<Integer> getTeamB() {
if (!savedStateHandle.contains(MainActivity.TEAMB)) {
savedStateHandle.set(MainActivity.TEAMB,0);
}
return savedStateHandle.getLiveData(MainActivity.TEAMB);
}
public void addAScore(Integer s) {
scoreA = getTeamA().getValue();
scoreB = getTeamB().getValue();
getTeamA().setValue(getTeamA().getValue()+s);
}
public void addBScore(Integer s) {
scoreA = getTeamA().getValue();
scoreB = getTeamB().getValue();
getTeamB().setValue(getTeamB().getValue()+s);
}
public void resetScore() {
scoreA = getTeamA().getValue();
scoreB = getTeamB().getValue();
getTeamA().setValue(0);
getTeamB().setValue(0);
}
public void undo() {
getTeamA().setValue(scoreA);
getTeamB().setValue(scoreB);
}
}
<layout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools">
<data>
<variable
name="data"
type="com.example.scoreboard.MyViewModel" />
data>
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<androidx.constraintlayout.widget.Guideline
android:id="@+id/guideline"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.05" />
<androidx.constraintlayout.widget.Guideline
android:id="@+id/guideline2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.15" />
<androidx.constraintlayout.widget.Guideline
android:id="@+id/guideline5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.3" />
<androidx.constraintlayout.widget.Guideline
android:id="@+id/guideline6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.45" />
<androidx.constraintlayout.widget.Guideline
android:id="@+id/guideline7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.75" />
<androidx.constraintlayout.widget.Guideline
android:id="@+id/guideline9"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.9" />
<androidx.constraintlayout.widget.Guideline
android:id="@+id/guideline8"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.6" />
<androidx.constraintlayout.widget.Guideline
android:id="@+id/guideline4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.5" />
<androidx.constraintlayout.widget.Guideline
android:id="@+id/guideline10"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.1" />
<androidx.constraintlayout.widget.Guideline
android:id="@+id/guideline11"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.9" />
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:text="@string/tv_TeamA"
android:textColor="@android:color/holo_orange_dark"
android:textSize="@dimen/teamSize"
app:layout_constraintBottom_toTopOf="@+id/guideline2"
app:layout_constraintEnd_toStartOf="@+id/guideline4"
app:layout_constraintStart_toStartOf="@+id/guideline10"
app:layout_constraintTop_toTopOf="@+id/guideline" />
<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:text="@string/tv_TeamB"
android:textColor="@android:color/holo_orange_dark"
android:textSize="@dimen/teamSize"
app:layout_constraintBottom_toTopOf="@+id/guideline2"
app:layout_constraintEnd_toStartOf="@+id/guideline11"
app:layout_constraintStart_toStartOf="@+id/guideline4"
app:layout_constraintTop_toTopOf="@+id/guideline" />
<TextView
android:id="@+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:text="@{String.valueOf(data.getTeamA())}"
android:textColor="@android:color/holo_red_dark"
android:textSize="@dimen/scoreSize"
app:layout_constraintBottom_toTopOf="@+id/guideline5"
app:layout_constraintEnd_toStartOf="@+id/guideline4"
app:layout_constraintStart_toStartOf="@+id/guideline10"
app:layout_constraintTop_toTopOf="@+id/guideline2"
tools:text="159" />
<TextView
android:id="@+id/textView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:text="@{String.valueOf(data.getTeamB())}"
android:textColor="@android:color/holo_blue_dark"
android:textSize="@dimen/scoreSize"
app:layout_constraintBottom_toTopOf="@+id/guideline5"
app:layout_constraintEnd_toStartOf="@+id/guideline11"
app:layout_constraintStart_toStartOf="@+id/guideline4"
app:layout_constraintTop_toTopOf="@+id/guideline2"
tools:text="75" />
<Button
android:id="@+id/button"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="16dp"
android:background="@android:color/holo_red_dark"
android:onClick="@{()->data.addAScore(1)}"
android:text="@string/btn_addone"
android:textColor="@android:color/white"
android:textSize="30sp"
app:layout_constraintBottom_toTopOf="@+id/guideline6"
app:layout_constraintEnd_toStartOf="@+id/guideline4"
app:layout_constraintStart_toStartOf="@+id/guideline10"
app:layout_constraintTop_toTopOf="@+id/guideline5" />
<Button
android:id="@+id/button2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="16dp"
android:background="@android:color/holo_blue_dark"
android:onClick="@{()->data.addBScore(1)}"
android:text="@string/btn_addone"
android:textColor="@android:color/white"
android:textSize="30sp"
app:layout_constraintBottom_toTopOf="@+id/guideline6"
app:layout_constraintEnd_toStartOf="@+id/guideline11"
app:layout_constraintStart_toStartOf="@+id/guideline4"
app:layout_constraintTop_toTopOf="@+id/guideline5" />
<Button
android:id="@+id/button3"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="16dp"
android:background="@android:color/holo_red_dark"
android:onClick="@{()->data.addAScore(2)}"
android:text="@string/btn_addtwo"
android:textColor="@android:color/white"
android:textSize="30sp"
app:layout_constraintBottom_toTopOf="@+id/guideline8"
app:layout_constraintEnd_toStartOf="@+id/guideline4"
app:layout_constraintStart_toStartOf="@+id/guideline10"
app:layout_constraintTop_toTopOf="@+id/guideline6" />
<Button
android:id="@+id/button4"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="16dp"
android:background="@android:color/holo_blue_dark"
android:onClick="@{()->data.addBScore(2)}"
android:text="@string/btn_addtwo"
android:textColor="@android:color/white"
android:textSize="30sp"
app:layout_constraintBottom_toTopOf="@+id/guideline8"
app:layout_constraintEnd_toStartOf="@+id/guideline11"
app:layout_constraintStart_toStartOf="@+id/guideline4"
app:layout_constraintTop_toTopOf="@+id/guideline6" />
<Button
android:id="@+id/button5"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="16dp"
android:background="@android:color/holo_red_dark"
android:onClick="@{()->data.addAScore(3)}"
android:text="@string/btn_addthree"
android:textColor="@android:color/white"
android:textSize="30sp"
app:layout_constraintBottom_toTopOf="@+id/guideline7"
app:layout_constraintEnd_toStartOf="@+id/guideline4"
app:layout_constraintStart_toStartOf="@+id/guideline10"
app:layout_constraintTop_toTopOf="@+id/guideline8" />
<Button
android:id="@+id/button6"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="16dp"
android:background="@android:color/holo_blue_dark"
android:onClick="@{()->data.addBScore(3)}"
android:text="@string/btn_addthree"
android:textColor="@android:color/white"
android:textSize="30sp"
app:layout_constraintBottom_toTopOf="@+id/guideline7"
app:layout_constraintEnd_toStartOf="@+id/guideline11"
app:layout_constraintStart_toStartOf="@+id/guideline4"
app:layout_constraintTop_toTopOf="@+id/guideline8" />
<ImageView
android:id="@+id/imageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:contentDescription="@string/iv_undo"
android:onClick="@{()->data.undo()}"
app:layout_constraintBottom_toTopOf="@+id/guideline9"
app:layout_constraintEnd_toStartOf="@+id/guideline4"
app:layout_constraintHorizontal_bias="0.8"
app:layout_constraintStart_toStartOf="@+id/guideline10"
app:layout_constraintTop_toTopOf="@+id/guideline7"
app:srcCompat="@drawable/ic_undo_black_24dp" />
<ImageView
android:id="@+id/imageView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:contentDescription="@string/iv_reset"
android:onClick="@{()->data.resetScore()}"
app:layout_constraintBottom_toTopOf="@+id/guideline9"
app:layout_constraintEnd_toStartOf="@+id/guideline11"
app:layout_constraintHorizontal_bias="0.2"
app:layout_constraintStart_toStartOf="@+id/guideline4"
app:layout_constraintTop_toTopOf="@+id/guideline7"
app:srcCompat="@drawable/ic_refresh_black_24dp" />
<TextView
android:id="@+id/textView5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp"
android:text="@string/tv_version"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="@+id/guideline9"
app:layout_constraintVertical_bias="0.73" />
androidx.constraintlayout.widget.ConstraintLayout>
layout>
<layout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools">
<data>
<variable
name="data"
type="com.example.scoreboard.MyViewModel" />
data>
<androidx.constraintlayout.widget.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<androidx.constraintlayout.widget.Guideline
android:id="@+id/guideline"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.03" />
<androidx.constraintlayout.widget.Guideline
android:id="@+id/guideline2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.13" />
<androidx.constraintlayout.widget.Guideline
android:id="@+id/guideline5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.27" />
<androidx.constraintlayout.widget.Guideline
android:id="@+id/guideline6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.47" />
<androidx.constraintlayout.widget.Guideline
android:id="@+id/guideline7"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.87" />
<androidx.constraintlayout.widget.Guideline
android:id="@+id/guideline9"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.94" />
<androidx.constraintlayout.widget.Guideline
android:id="@+id/guideline8"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="horizontal"
app:layout_constraintGuide_percent="0.67" />
<androidx.constraintlayout.widget.Guideline
android:id="@+id/guideline4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.5" />
<androidx.constraintlayout.widget.Guideline
android:id="@+id/guideline10"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.1" />
<androidx.constraintlayout.widget.Guideline
android:id="@+id/guideline11"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
app:layout_constraintGuide_percent="0.9" />
<TextView
android:id="@+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:text="@string/tv_TeamA"
android:textColor="@android:color/holo_orange_dark"
android:textSize="@dimen/teamSize"
app:layout_constraintBottom_toTopOf="@+id/guideline2"
app:layout_constraintEnd_toStartOf="@+id/guideline4"
app:layout_constraintStart_toStartOf="@+id/guideline10"
app:layout_constraintTop_toTopOf="@+id/guideline" />
<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:text="@string/tv_TeamB"
android:textColor="@android:color/holo_orange_dark"
android:textSize="@dimen/teamSize"
app:layout_constraintBottom_toTopOf="@+id/guideline2"
app:layout_constraintEnd_toStartOf="@+id/guideline11"
app:layout_constraintStart_toStartOf="@+id/guideline4"
app:layout_constraintTop_toTopOf="@+id/guideline" />
<TextView
android:id="@+id/textView3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:text="@{String.valueOf(data.getTeamA())}"
android:textColor="@android:color/holo_red_dark"
android:textSize="@dimen/scoreSizeLand"
app:layout_constraintBottom_toTopOf="@+id/guideline5"
app:layout_constraintEnd_toStartOf="@+id/guideline4"
app:layout_constraintStart_toStartOf="@+id/guideline10"
app:layout_constraintTop_toTopOf="@+id/guideline2"
tools:text="159" />
<TextView
android:id="@+id/textView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:text="@{String.valueOf(data.getTeamB())}"
android:textColor="@android:color/holo_blue_dark"
android:textSize="@dimen/scoreSizeLand"
app:layout_constraintBottom_toTopOf="@+id/guideline5"
app:layout_constraintEnd_toStartOf="@+id/guideline11"
app:layout_constraintStart_toStartOf="@+id/guideline4"
app:layout_constraintTop_toTopOf="@+id/guideline2"
tools:text="75" />
<Button
android:id="@+id/button"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="16dp"
android:background="@android:color/holo_red_dark"
android:onClick="@{()->data.addAScore(1)}"
android:text="@string/btn_addone"
android:textColor="@android:color/white"
android:textSize="30sp"
app:layout_constraintBottom_toTopOf="@+id/guideline6"
app:layout_constraintEnd_toStartOf="@+id/guideline4"
app:layout_constraintStart_toStartOf="@+id/guideline10"
app:layout_constraintTop_toTopOf="@+id/guideline5" />
<Button
android:id="@+id/button2"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="16dp"
android:background="@android:color/holo_blue_dark"
android:onClick="@{()->data.addBScore(1)}"
android:text="@string/btn_addone"
android:textColor="@android:color/white"
android:textSize="30sp"
app:layout_constraintBottom_toTopOf="@+id/guideline6"
app:layout_constraintEnd_toStartOf="@+id/guideline11"
app:layout_constraintStart_toStartOf="@+id/guideline4"
app:layout_constraintTop_toTopOf="@+id/guideline5" />
<Button
android:id="@+id/button3"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="16dp"
android:background="@android:color/holo_red_dark"
android:onClick="@{()->data.addAScore(2)}"
android:text="@string/btn_addtwo"
android:textColor="@android:color/white"
android:textSize="30sp"
app:layout_constraintBottom_toTopOf="@+id/guideline8"
app:layout_constraintEnd_toStartOf="@+id/guideline4"
app:layout_constraintStart_toStartOf="@+id/guideline10"
app:layout_constraintTop_toTopOf="@+id/guideline6" />
<Button
android:id="@+id/button4"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="16dp"
android:background="@android:color/holo_blue_dark"
android:onClick="@{()->data.addBScore(2)}"
android:text="@string/btn_addtwo"
android:textColor="@android:color/white"
android:textSize="30sp"
app:layout_constraintBottom_toTopOf="@+id/guideline8"
app:layout_constraintEnd_toStartOf="@+id/guideline11"
app:layout_constraintStart_toStartOf="@+id/guideline4"
app:layout_constraintTop_toTopOf="@+id/guideline6" />
<Button
android:id="@+id/button5"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="16dp"
android:background="@android:color/holo_red_dark"
android:onClick="@{()->data.addAScore(3)}"
android:text="@string/btn_addthree"
android:textColor="@android:color/white"
android:textSize="30sp"
app:layout_constraintBottom_toTopOf="@+id/guideline7"
app:layout_constraintEnd_toStartOf="@+id/guideline4"
app:layout_constraintStart_toStartOf="@+id/guideline10"
app:layout_constraintTop_toTopOf="@+id/guideline8" />
<Button
android:id="@+id/button6"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="16dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="16dp"
android:background="@android:color/holo_blue_dark"
android:onClick="@{()->data.addBScore(3)}"
android:text="@string/btn_addthree"
android:textColor="@android:color/white"
android:textSize="30sp"
app:layout_constraintBottom_toTopOf="@+id/guideline7"
app:layout_constraintEnd_toStartOf="@+id/guideline11"
app:layout_constraintStart_toStartOf="@+id/guideline4"
app:layout_constraintTop_toTopOf="@+id/guideline8" />
<ImageView
android:id="@+id/imageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:contentDescription="@string/iv_undo"
android:onClick="@{()->data.undo()}"
app:layout_constraintBottom_toTopOf="@+id/guideline9"
app:layout_constraintEnd_toStartOf="@+id/guideline4"
app:layout_constraintHorizontal_bias="0.8"
app:layout_constraintStart_toStartOf="@+id/guideline10"
app:layout_constraintTop_toTopOf="@+id/guideline7"
app:srcCompat="@drawable/ic_undo_black_24dp" />
<ImageView
android:id="@+id/imageView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_marginEnd="8dp"
android:layout_marginBottom="8dp"
android:contentDescription="@string/iv_reset"
android:onClick="@{()->data.resetScore()}"
app:layout_constraintBottom_toTopOf="@+id/guideline9"
app:layout_constraintEnd_toStartOf="@+id/guideline11"
app:layout_constraintHorizontal_bias="0.2"
app:layout_constraintStart_toStartOf="@+id/guideline4"
app:layout_constraintTop_toTopOf="@+id/guideline7"
app:srcCompat="@drawable/ic_refresh_black_24dp" />
<TextView
android:id="@+id/textView5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="8dp"
android:layout_marginEnd="8dp"
android:text="@string/tv_version"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="@+id/guideline9"
app:layout_constraintVertical_bias="0.73" />
androidx.constraintlayout.widget.ConstraintLayout>
layout>
package com.example.scoreboard;
import androidx.appcompat.app.AppCompatActivity;
import androidx.databinding.DataBindingUtil;
import androidx.lifecycle.SavedStateVMFactory;
import androidx.lifecycle.ViewModelProviders;
import android.os.Bundle;
import com.example.scoreboard.databinding.ActivityMainBinding;
public class MainActivity extends AppCompatActivity {
MyViewModel myViewModel;
ActivityMainBinding binding;
public final static String TEAMA = "teamA",TEAMB = "teamB";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
binding = DataBindingUtil.setContentView(this,R.layout.activity_main);
myViewModel = ViewModelProviders.of(this,new SavedStateVMFactory(this)).get(MyViewModel.class);
binding.setData(myViewModel);
binding.setLifecycleOwner(this);
}
}
<resources>
<string name="app_name">ScoreBoardstring>
<string name="tv_TeamA">Team Astring>
<string name="tv_TeamB">Team Bstring>
<string name="tv_TeamAScore">TeamAScorestring>
<string name="tv_TeamBScore">TeamBScorestring>
<string name="btn_addone" translatable="false">+1string>
<string name="btn_addtwo" translatable="false">+2string>
<string name="btn_addthree" translatable="false">+3string>
<string name="iv_undo">undostring>
<string name="iv_reset">resetstring>
<string name="tv_version" translatable="false">1.0 betastring>
resources>
<resources>
<string name="app_name">计分板string>
<string name="iv_reset">重置string>
<string name="iv_undo">撤销string>
<string name="tv_TeamA">A 队string>
<string name="tv_TeamAScore">A 队分数string>
<string name="tv_TeamB">B 队string>
<string name="tv_TeamBScore">B 队分数string>
resources>
<resources>
<dimen name="teamSize">30spdimen>
<dimen name="scoreSize">60spdimen>
<dimen name="scoreSizeLand">40spdimen>
resources>