Issue
I was developing an android app and I have tested this app on Android 7, Its working well. But at the end I decided to test it on lower versions and was surprised. I'm getting many inflating errors while starting some activities. here is my app gradle file :
apply plugin: 'com.android.application'
android {
compileSdkVersion 27
defaultConfig {
applicationId "x.x.x"
minSdkVersion 17
targetSdkVersion 27
versionCode 0
versionName "x"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
vectorDrawables.useSupportLibrary = true
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'com.android.support:appcompat-v7:27.1.1'
implementation 'com.android.support.constraint:constraint-layout:1.1.2'
implementation 'com.android.support:design:27.1.1'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
implementation 'com.skyfishjy.ripplebackground:library:1.0.1'
implementation 'com.orhanobut:dialogplus:1.11@aar'
implementation 'br.com.simplepass:loading-button-android:1.14.0'
implementation 'com.squareup.retrofit2:retrofit:2.4.0'
implementation 'com.squareup.retrofit2:converter-gson:2.4.0'
implementation 'com.squareup.picasso:picasso:2.5.2'
implementation 'com.github.traex.expandablelayout:library:1.3'
implementation 'com.github.markomilos:paginate:0.5.1'
implementation 'com.github.castorflex.smoothprogressbar:library:1.1.0'
implementation 'id.zelory:compressor:2.1.0'
implementation 'com.google.firebase:firebase-core:16.0.4'
}
here is just a small piece of logcat errors :
Process: com.x.x, PID: 8878
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.x.x/com.x.x.Tickets}: android.view.InflateException: Binary XML file line #97: Binary XML file line #97: Error inflating class android.support.design.widget.FloatingActionButton
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2421)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2481)
at android.app.ActivityThread.access$900(ActivityThread.java:155)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1349)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:174)
at android.app.ActivityThread.main(ActivityThread.java:5440)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: android.view.InflateException: Binary XML file line #97: Binary XML file line #97: Error inflating class android.support.design.widget.FloatingActionButton
at android.view.LayoutInflater.inflate(LayoutInflater.java:539)
at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:287)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139)
at com.x.x.Tickets.onCreate(Tickets.java:51)
at android.app.Activity.performCreate(Activity.java:6285)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1108)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2374)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2481)
at android.app.ActivityThread.access$900(ActivityThread.java:155)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1349)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:174)
at android.app.ActivityThread.main(ActivityThread.java:5440)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: android.view.InflateException: Binary XML file line #97: Error inflating class android.support.design.widget.FloatingActionButton
at android.view.LayoutInflater.createView(LayoutInflater.java:645)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:764)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:835)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798)
at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:287)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139)
at com.x.x.Tickets.onCreate(Tickets.java:51)
at android.app.Activity.performCreate(Activity.java:6285)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1108)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2374)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2481)
at android.app.ActivityThread.access$900(ActivityThread.java:155)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1349)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:174)
at android.app.ActivityThread.main(ActivityThread.java:5440)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Constructor.newInstance(Native Method)
at android.view.LayoutInflater.createView(LayoutInflater.java:619)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:764)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:835)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798)
at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
at android.view.LayoutInflater.inflate(LayoutInflater.java:423)
at android.view.LayoutInflater.inflate(LayoutInflater.java:374)
at android.support.v7.app.AppCompatDelegateImplV9.setContentView(AppCompatDelegateImplV9.java:287)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:139)
at com.x.x.Tickets.onCreate(Tickets.java:51)
at android.app.Activity.performCreate(Activity.java:6285)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1108)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2374)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2481)
at android.app.ActivityThread.access$900(ActivityThread.java:155)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1349)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:174)
at android.app.ActivityThread.main(ActivityThread.java:5440)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
Caused by: java.lang.NullPointerException: Attempt to invoke virtual method 'android.graphics.drawable.Drawable android.graphics.drawable.Drawable$ConstantState.newDrawable()' on a null object reference
at android.graphics.drawable.LayerDrawable$ChildDrawable.<init>(LayerDrawable.java:1723)
at android.graphics.drawable.LayerDrawable$LayerState.<init>(LayerDrawable.java:1792)
at android.graphics.drawable.RippleDrawable$RippleState.<init>(RippleDrawable.java:998)
at android.graphics.drawable.RippleDrawable.createConstantState(RippleDrawable.java:989)
at android.graphics.drawable.RippleDrawable.createConstantState(RippleDrawable.java:96)
at android.graphics.drawable.LayerDrawable.mutate(LayerDrawable.java:1652)
at android.graphics.drawable.RippleDrawable.mutate(RippleDrawable.java:975)
at android.view.View.applyBackgroundTint(View.java:17430)
at android.view.View.setBackgroundDrawable(View.java:17306)
at android.support.design.widget.FloatingActionButton.access$001(FloatingActionButton.java:69)
at android.support.design.widget.FloatingActionButton$ShadowDelegateImpl.setBackgroundDrawable(FloatingActionButton.java:862)
at android.support.design.widget.FloatingActionButtonLollipop.setBackgroundDrawable(FloatingActionButtonLollipop.java:73)
at android.support.design.widget.FloatingActionButton.<init>(FloatingActionButton.java:188)
at android.support.design.widget.FloatingActionButton.<init>(FloatingActionButton.j
this project works fine on android 7 but I get these errors on android 4.2.2 and 6.0.1 (maybe other devices too)
here is my xml file :
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:expandable="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Tickets">
<android.support.design.widget.AppBarLayout
android:id="@+id/ticketsAppBar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="@color/primary_color"
android:paddingTop="@dimen/appbar_padding_top"
android:theme="@style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="@+id/ticketsDashboard_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:contentInsetEnd="0dp"
android:contentInsetLeft="0dp"
android:contentInsetRight="0dp"
android:contentInsetStart="0dp"
app:contentInsetEnd="0dp"
app:contentInsetLeft="0dp"
app:contentInsetRight="0dp"
app:contentInsetStart="0dp">
<include android:id="@+id/ticketsBar" layout="@layout/others_toolbar"></include>
</android.support.v7.widget.Toolbar>
</android.support.design.widget.AppBarLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
app:layout_behavior="@string/appbar_scrolling_view_behavior">
<android.support.v7.widget.RecyclerView
android:id="@+id/tickets_recycler_view"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:visibility="gone" />
<fr.castorflex.android.smoothprogressbar.SmoothProgressBar xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="@+id/load_more_progressbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:indeterminate="true"
android:visibility="gone"
app:spb_color="@color/dark_primary"
app:spb_mirror_mode="true"
app:spb_progressiveStart_activated="true"
app:spb_progressiveStart_speed="1.5"
app:spb_progressiveStop_speed="3.4"
app:spb_reversed="true"
app:spb_sections_count="4"
app:spb_speed="10.0"
app:spb_stroke_separator_length="4dp"
app:spb_stroke_width="4dp" />
</LinearLayout>
<ProgressBar
android:id="@+id/tickets_progressBar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical|center_horizontal"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:background="@drawable/progress_bar" />
<ViewStub
android:layout_gravity="center_vertical|center_horizontal"
android:id="@+id/ticketsVS"
android:layout_width="match_parent"
android:layout_marginBottom="8dp"
android:layout_marginEnd="8dp"
android:layout_marginStart="8dp"
android:layout_marginTop="8dp"
android:layout_height="wrap_content" />
<android.support.design.widget.FloatingActionButton
android:id="@+id/newTicketFAB"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|right"
android:layout_marginBottom="24dp"
android:layout_marginEnd="16dp"
android:backgroundTint="@color/secondry_text"
android:clickable="true"
app:rippleColor="@color/divider_color"
expandable:srcCompat="@drawable/ic_add_black_24dp" />
</android.support.design.widget.CoordinatorLayout>
Solution
You have an attribute android:backgroundTint
in your FloatingActionButton
, and according to View.setBackgroundTintList, it is only available in Android API 21 and above, which is why you are experiencing crashes on devices on lower API level. To fix the backward compatibility issue, try to replace the attribute with app:backgroundTint
:
<android.support.design.widget.FloatingActionButton
android:id="@+id/newTicketFAB"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|right"
android:layout_marginBottom="24dp"
android:layout_marginEnd="16dp"
android:clickable="true"
app:backgroundTint="@color/secondry_text"
app:rippleColor="@color/divider_color"
app:srcCompat="@drawable/ic_add_black_24dp" />
Answered By - Aaron
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