'Android: no start destination defined via app:startDestination for x.x.x:id/nav_graph
In the nav_graph even though I have used, I get warning
project level gradle:
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
ext.kotlin_version = '1.3.72'
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.6.3'
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
def nav_version = "2.3.0-beta01"
classpath "androidx.navigation:navigation-safe-args-gradle-plugin:$nav_version"
}
}
allprojects {
repositories {
google()
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
app level gradle:
apply plugin: 'com.android.application'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
apply plugin: "androidx.navigation.safeargs.kotlin"
android {
compileSdkVersion 29
buildToolsVersion "29.0.3"
defaultConfig {
applicationId "com.demo.sample"
minSdkVersion 16
targetSdkVersion 29
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
viewBinding {
enabled = true
}
}
dependencies {
def nav_version = "2.3.0-beta01"
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation 'androidx.appcompat:appcompat:1.1.0'
implementation 'androidx.core:core-ktx:1.2.0'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.1'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
// JetPack Navigation
implementation "androidx.navigation:navigation-fragment-ktx:$nav_version"
implementation "androidx.navigation:navigation-ui-ktx:$nav_version"
implementation "androidx.navigation:navigation-dynamic-features-fragment:$nav_version"
}
MainActivity.kt
class MainActivity : AppCompatActivity() {
//Binding reference
private lateinit var binding : ActivityMainBinding
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
initOnCreate()
}
/** Init OnCreate **/
private fun initOnCreate() {
binding = ActivityMainBinding.inflate(layoutInflater)
setContentView(binding.root)
}
}
nav_graph.xml
<?xml version="1.0" encoding="utf-8"?>
<navigation 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"
android:id="@+id/nav_graph">
<fragment
android:id="@+id/frgChooseRecipient2"
android:name="com.demo.sample.fragments.FrgChooseRecipient"
android:label="fragment_choose_recipient"
tools:layout="@layout/fragment_choose_recipient" >
<action
android:id="@+id/action_frgChooseRecipient2_to_frgConfirmation"
app:destination="@id/frgConfirmation" />
</fragment>
<fragment
android:id="@+id/frgViewTransaction2"
android:name="com.demo.sample.fragments.FrgViewTransaction"
android:label="fragment_view_transaction"
tools:layout="@layout/fragment_view_transaction" />
<fragment
android:id="@+id/frgConfirmation"
android:name="com.demo.sample.fragments.FrgConfirmation"
android:label="fragment_confirmation"
tools:layout="@layout/fragment_confirmation" />
<fragment
android:id="@+id/frgMain2"
android:name="com.demo.sample.fragments.FrgMain"
android:label="fragment_main"
tools:layout="@layout/fragment_main" >
<action
android:id="@+id/action_frgMain2_to_frgSpecifyAmount"
app:destination="@id/frgSpecifyAmount" />
<action
android:id="@+id/action_frgMain2_to_frgViewTransaction2"
app:destination="@id/frgViewTransaction2" />
<action
android:id="@+id/action_frgMain2_to_frgBalance2"
app:destination="@id/frgBalance2" />
</fragment>
<fragment
android:id="@+id/frgSpecifyAmount"
android:name="com.demo.sample.fragments.FrgSpecifyAmount"
android:label="fragment_specify_amount"
tools:layout="@layout/fragment_specify_amount" >
<action
android:id="@+id/action_frgSpecifyAmount_to_frgChooseRecipient2"
app:destination="@id/frgChooseRecipient2" />
</fragment>
<fragment
android:id="@+id/frgBalance2"
android:name="com.demo.sample.fragments.FrgBalance"
android:label="fragment_balance"
tools:layout="@layout/fragment_balance" />
</navigation>
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".activities.MainActivity">
<androidx.fragment.app.FragmentContainerView
android:id="@+id/fragment"
android:name="androidx.navigation.fragment.NavHostFragment"
android:layout_width="0dp"
android:layout_height="0dp"
app:defaultNavHost="true"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:navGraph="@navigation/nav_graph" />
</androidx.constraintlayout.widget.ConstraintLayo
Error I am facing:
2020-05-30 23:19:57.486 17192-17192/com.demo.sample E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.demo.sample, PID: 17192
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.demo.sample/com.demo.sample.activities.MainActivity}: android.view.InflateException: Binary XML file line #8: Binary XML file line #8: Error inflating class androidx.fragment.app.FragmentContainerView
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2913)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Caused by: android.view.InflateException: Binary XML file line #8: Binary XML file line #8: Error inflating class androidx.fragment.app.FragmentContainerView
Caused by: android.view.InflateException: Binary XML file line #8: Error inflating class androidx.fragment.app.FragmentContainerView
Caused by: java.lang.IllegalStateException: no start destination defined via app:startDestination for com.demo.sample:id/nav_graph
at androidx.navigation.NavGraphNavigator.navigate(NavGraphNavigator.java:61)
at androidx.navigation.NavGraphNavigator.navigate(NavGraphNavigator.java:28)
at androidx.navigation.NavController.navigate(NavController.java:1036)
at androidx.navigation.NavController.onGraphCreated(NavController.java:629)
at androidx.navigation.NavController.setGraph(NavController.java:586)
at androidx.navigation.NavController.setGraph(NavController.java:551)
at androidx.navigation.NavController.setGraph(NavController.java:533)
at androidx.navigation.fragment.NavHostFragment.onCreate(NavHostFragment.java:238)
at androidx.fragment.app.Fragment.performCreate(Fragment.java:2684)
at androidx.fragment.app.FragmentStateManager.create(FragmentStateManager.java:280)
at androidx.fragment.app.FragmentManager.moveToState(FragmentManager.java:1175)
at androidx.fragment.app.FragmentManager.addAddedFragments(FragmentManager.java:2224)
at androidx.fragment.app.FragmentManager.executeOpsTogether(FragmentManager.java:1997)
at androidx.fragment.app.FragmentManager.removeRedundantOperationsAndExecute(FragmentManager.java:1953)
at androidx.fragment.app.FragmentManager.execSingleAction(FragmentManager.java:1818)
at androidx.fragment.app.BackStackRecord.commitNowAllowingStateLoss(BackStackRecord.java:303)
at androidx.fragment.app.FragmentContainerView.<init>(FragmentContainerView.java:166)
at androidx.fragment.app.FragmentLayoutInflaterFactory.onCreateView(FragmentLayoutInflaterFactory.java:51)
at androidx.fragment.app.FragmentController.onCreateView(FragmentController.java:135)
at androidx.fragment.app.FragmentActivity.dispatchFragmentsOnCreateView(FragmentActivity.java:356)
at androidx.fragment.app.FragmentActivity.onCreateView(FragmentActivity.java:335)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:780)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:730)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:863)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:824)
at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
at com.demo.sample.databinding.ActivityMainBinding.inflate(ActivityMainBinding.java:44)
at com.demo.sample.databinding.ActivityMainBinding.inflate(ActivityMainBinding.java:38)
2020-05-30 23:19:57.488 17192-17192/com.demo.sample E/AndroidRuntime: at com.demo.sample.activities.MainActivity.initOnCreate(MainActivity.kt:21)
at com.demo.sample.activities.MainActivity.onCreate(MainActivity.kt:16)
at android.app.Activity.performCreate(Activity.java:7136)
at android.app.Activity.performCreate(Activity.java:7127)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1271)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2893)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3048)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1808)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:6669)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)
Solution 1:[1]
The actual problem is
Caused by: java.lang.IllegalStateException: no start destination defined via app:startDestination for com.demo.sample:id/nav_graph
meaning no app:startDestination attribute was set for the navigation tag in nav_graph.xml as mentioned in Designate a screen as the start destination and Connect destinations.
Sources
This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.
Source: Stack Overflow
| Solution | Source |
|---|---|
| Solution 1 | Onik |