Trusted Web Activity - Address bar not hide (Chrome for Android 72)

Question

I've followed this guide to learn how to use a Trusted Web Activity. All fine but the address bar still appear. At begin I think it was because when the app was looking for assetlinks.json the response was 404. Fixed it but no luck on removing the address bar. Am I missing something?

Chrome Version: 72.0.3626.96

Android Version: 7.1.2 (LineageOS 14.1)

assetlinks.json

[{
  "relation": ["delegate_permission/common.handle_all_urls"],
  "target" : { "namespace": "android_app", "package_name": "com.example.twa_test",
    "sha256_cert_fingerprints": ["2A:32:7D:B7:4D:0B:A5:6A:72:47:86:A3:2F:A6:BB:D8:26:DE:AB:7E:8B:EA:C7:16:80:EA:C3:F1:50:E7:8E:D1"] }
}]

AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.twa_test">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <meta-data
            android:name="asset_statements"
            android:resource="@string/asset_statements" />
        <activity android:name="android.support.customtabs.trusted.LauncherActivity">

            <!-- Edit android:value to change the url opened by the TWA -->
            <meta-data
                android:name="android.support.customtabs.trusted.DEFAULT_URL"
                android:value="https://slexom.gitlab.io/namya/" />

            <!-- This intent-filter adds the TWA to the Android Launcher -->
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>

            <!--
              This intent-filter allows the TWA to handle Intents to open
              airhorner.com.
            -->
            <intent-filter>
                <action android:name="android.intent.action.VIEW" />

                <category android:name="android.intent.category.DEFAULT" />
                <category android:name="android.intent.category.BROWSABLE" />

                <!-- Edit android:host to handle links to the target URL-->
                <data
                    android:scheme="https"
                    android:host="slexom.gitlab.io/namya/" />
            </intent-filter>
        </activity>
    </application>
</manifest>

res/values/strings.xml

<resources>
    <string name="app_name">Namya</string>
    <string name="asset_statements">
        [{
            \"relation\": [\"delegate_permission/common.handle_all_urls\"],
            \"target\": {
                \"namespace\": \"web\",
                \"site\": \"https://slexom.gitlab.io/namya/\"}
        }]
    </string>
</resources>

build.gradle(Project)

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        google()
        jcenter()

    }
    dependencies {
        classpath 'com.android.tools.build:gradle:3.3.1'

        // NOTE: Do not place your application dependencies here; they belong
        // in the individual module build.gradle files
    }
}

allprojects {
    repositories {
        google()
        jcenter()
        maven { url "https://jitpack.io" }
    }
}

task clean(type: Delete) {
    delete rootProject.buildDir
}

build.gradle(Module: app)

apply plugin: 'com.android.application'

android {
    compileSdkVersion 28
    defaultConfig {
        applicationId "com.example.twa_test"
        minSdkVersion 16
        targetSdkVersion 28
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "android.support.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
    }
}

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])
    implementation 'com.android.support:appcompat-v7:28.0.0'
    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.github.GoogleChrome.custom-tabs-client:customtabs:3a71a75c9f'
}

Logcat

2019-02-08 18:19:01.918 10880-10880/? I/art: Late-enabling -Xcheck:jni
2019-02-08 18:19:02.352 10880-10880/com.example.twa_test W/System: 
ClassLoader referenced unknown path: /data/app/com.example.twa_test-1/lib/arm
2019-02-08 18:19:02.403 10880-10880/com.example.twa_test I/InstantRun: 
starting instant run server: is main process
2019-02-08 18:19:02.478 10880-10896/com.example.twa_test D/libEGL: loaded /system/lib/egl/libEGL_mali.so
2019-02-08 18:19:02.510 10880-10896/com.example.twa_test D/libEGL: loaded /system/lib/egl/libGLESv1_CM_mali.so
2019-02-08 18:19:02.660 10880-10880/com.example.twa_test W/art: Before Android 4.1, method android.graphics.PorterDuffColorFilter android.support.graphics.drawable.VectorDrawableCompat.updateTintFilter(android.graphics.PorterDuffColorFilter, android.content.res.ColorStateList, android.graphics.PorterDuff$Mode) would have incorrectly overridden the package-private method in android.graphics.drawable.Drawable
2019-02-08 18:19:02.727 10880-10896/com.example.twa_test D/libEGL: loaded /system/lib/egl/libGLESv2_mali.so
2019-02-08 18:19:02.920 10880-10880/com.example.twa_test I/art: Rejecting re-init on previously-failed class java.lang.Class<android.support.v4.view.ViewCompat$OnUnhandledKeyEventListenerWrapper>: java.lang.NoClassDefFoundError: Failed resolution of: Landroid/view/View$OnUnhandledKeyEventListener;
2019-02-08 18:19:02.920 10880-10880/com.example.twa_test I/art:     at void android.support.v4.view.ViewCompat.setBackground(android.view.View, android.graphics.drawable.Drawable) (ViewCompat.java:2341)
2019-02-08 18:19:02.920 10880-10880/com.example.twa_test I/art:     at void android.support.v7.widget.ActionBarContainer.<init>(android.content.Context, android.util.AttributeSet) (ActionBarContainer.java:62)
2019-02-08 18:19:02.920 10880-10880/com.example.twa_test I/art:     at java.lang.Object java.lang.reflect.Constructor.newInstance0!(java.lang.Object[]) (Constructor.java:-2)
2019-02-08 18:19:02.920 10880-10880/com.example.twa_test I/art:     at java.lang.Object java.lang.reflect.Constructor.newInstance(java.lang.Object[]) (Constructor.java:430)
2019-02-08 18:19:02.920 10880-10880/com.example.twa_test I/art:     at android.view.View android.view.LayoutInflater.createView(java.lang.String, java.lang.String, android.util.AttributeSet) (LayoutInflater.java:645)
2019-02-08 18:19:02.920 10880-10880/com.example.twa_test I/art:     at android.view.View android.view.LayoutInflater.createViewFromTag(android.view.View, java.lang.String, android.content.Context, android.util.AttributeSet, boolean) (LayoutInflater.java:787)
2019-02-08 18:19:02.920 10880-10880/com.example.twa_test I/art:     at android.view.View android.view.LayoutInflater.createViewFromTag(android.view.View, java.lang.String, android.content.Context, android.util.AttributeSet) (LayoutInflater.java:727)
2019-02-08 18:19:02.920 10880-10880/com.example.twa_test I/art:     at void android.view.LayoutInflater.rInflate(org.xmlpull.v1.XmlPullParser, android.view.View, android.content.Context, android.util.AttributeSet, boolean) (LayoutInflater.java:858)
2019-02-08 18:19:02.920 10880-10880/com.example.twa_test I/art:     at void android.view.LayoutInflater.rInflateChildren(org.xmlpull.v1.XmlPullParser, android.view.View, android.util.AttributeSet, boolean) (LayoutInflater.java:821)
2019-02-08 18:19:02.920 10880-10880/com.example.twa_test I/art:     at android.view.View android.view.LayoutInflater.inflate(org.xmlpull.v1.XmlPullParser, android.view.ViewGroup, boolean) (LayoutInflater.java:518)
2019-02-08 18:19:02.920 10880-10880/com.example.twa_test I/art:     at android.view.View android.view.LayoutInflater.inflate(int, android.view.ViewGroup, boolean) (LayoutInflater.java:426)
2019-02-08 18:19:02.920 10880-10880/com.example.twa_test I/art:     at android.view.View android.view.LayoutInflater.inflate(int, android.view.ViewGroup) (LayoutInflater.java:377)
2019-02-08 18:19:02.920 10880-10880/com.example.twa_test I/art:     at android.view.ViewGroup android.support.v7.app.AppCompatDelegateImpl.createSubDecor() (AppCompatDelegateImpl.java:607)
2019-02-08 18:19:02.920 10880-10880/com.example.twa_test I/art:     at void android.support.v7.app.AppCompatDelegateImpl.ensureSubDecor() (AppCompatDelegateImpl.java:518)
2019-02-08 18:19:02.920 10880-10880/com.example.twa_test I/art:     at void android.support.v7.app.AppCompatDelegateImpl.onPostCreate(android.os.Bundle) (AppCompatDelegateImpl.java:299)
2019-02-08 18:19:02.920 10880-10880/com.example.twa_test I/art:     at void android.support.v7.app.AppCompatActivity.onPostCreate(android.os.Bundle) (AppCompatActivity.java:98)
2019-02-08 18:19:02.920 10880-10880/com.example.twa_test I/art:     at void android.app.Instrumentation.callActivityOnPostCreate(android.app.Activity, android.os.Bundle) (Instrumentation.java:1200)
2019-02-08 18:19:02.920 10880-10880/com.example.twa_test I/art:     at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2666)
2019-02-08 18:19:02.920 10880-10880/com.example.twa_test I/art:     at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:2751)
2019-02-08 18:19:02.920 10880-10880/com.example.twa_test I/art:     at void android.app.ActivityThread.-wrap12(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
2019-02-08 18:19:02.920 10880-10880/com.example.twa_test I/art:     at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1496)
2019-02-08 18:19:02.920 10880-10880/com.example.twa_test I/art:     at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:102)
2019-02-08 18:19:02.920 10880-10880/com.example.twa_test I/art:     at void android.os.Looper.loop() (Looper.java:154)
2019-02-08 18:19:02.920 10880-10880/com.example.twa_test I/art:     at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6186)
2019-02-08 18:19:02.920 10880-10880/com.example.twa_test I/art:     at java.lang.Object java.lang.reflect.Method.invoke!(java.lang.Object, java.lang.Object[]) (Method.java:-2)
2019-02-08 18:19:02.920 10880-10880/com.example.twa_test I/art:     at void com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run() (ZygoteInit.java:889)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:779)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art: Caused by: java.lang.ClassNotFoundException: Didn't find class "android.view.View$OnUnhandledKeyEventListener" on path: DexPathList[[zip file "/data/app/com.example.twa_test-1/base.apk", zip file "/data/app/com.example.twa_test-1/split_lib_dependencies_apk.apk", zip file "/data/app/com.example.twa_test-1/split_lib_slice_0_apk.apk", zip file "/data/app/com.example.twa_test-1/split_lib_slice_1_apk.apk", zip file "/data/app/com.example.twa_test-1/split_lib_slice_2_apk.apk", zip file "/data/app/com.example.twa_test-1/split_lib_slice_3_apk.apk", zip file "/data/app/com.example.twa_test-1/split_lib_slice_4_apk.apk", zip file "/data/app/com.example.twa_test-1/split_lib_slice_5_apk.apk", zip file "/data/app/com.example.twa_test-1/split_lib_slice_6_apk.apk", zip file "/data/app/com.example.twa_test-1/split_lib_slice_7_apk.apk", zip file "/data/app/com.example.twa_test-1/split_lib_slice_8_apk.apk", zip file "/data/app/com.example.twa_test-1/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/com.example.tw
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at java.lang.Class dalvik.system.BaseDexClassLoader.findClass(java.lang.String) (BaseDexClassLoader.java:56)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String, boolean) (ClassLoader.java:380)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at java.lang.Class java.lang.ClassLoader.loadClass(java.lang.String) (ClassLoader.java:312)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at void android.support.v4.view.ViewCompat.setBackground(android.view.View, android.graphics.drawable.Drawable) (ViewCompat.java:2341)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at void android.support.v7.widget.ActionBarContainer.<init>(android.content.Context, android.util.AttributeSet) (ActionBarContainer.java:62)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at java.lang.Object java.lang.reflect.Constructor.newInstance0!(java.lang.Object[]) (Constructor.java:-2)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at java.lang.Object java.lang.reflect.Constructor.newInstance(java.lang.Object[]) (Constructor.java:430)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at android.view.View android.view.LayoutInflater.createView(java.lang.String, java.lang.String, android.util.AttributeSet) (LayoutInflater.java:645)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at android.view.View android.view.LayoutInflater.createViewFromTag(android.view.View, java.lang.String, android.content.Context, android.util.AttributeSet, boolean) (LayoutInflater.java:787)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at android.view.View android.view.LayoutInflater.createViewFromTag(android.view.View, java.lang.String, android.content.Context, android.util.AttributeSet) (LayoutInflater.java:727)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at void android.view.LayoutInflater.rInflate(org.xmlpull.v1.XmlPullParser, android.view.View, android.content.Context, android.util.AttributeSet, boolean) (LayoutInflater.java:858)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at void android.view.LayoutInflater.rInflateChildren(org.xmlpull.v1.XmlPullParser, android.view.View, android.util.AttributeSet, boolean) (LayoutInflater.java:821)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at android.view.View android.view.LayoutInflater.inflate(org.xmlpull.v1.XmlPullParser, android.view.ViewGroup, boolean) (LayoutInflater.java:518)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at android.view.View android.view.LayoutInflater.inflate(int, android.view.ViewGroup, boolean) (LayoutInflater.java:426)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at android.view.View android.view.LayoutInflater.inflate(int, android.view.ViewGroup) (LayoutInflater.java:377)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at android.view.ViewGroup android.support.v7.app.AppCompatDelegateImpl.createSubDecor() (AppCompatDelegateImpl.java:607)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at void android.support.v7.app.AppCompatDelegateImpl.ensureSubDecor() (AppCompatDelegateImpl.java:518)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at void android.support.v7.app.AppCompatDelegateImpl.onPostCreate(android.os.Bundle) (AppCompatDelegateImpl.java:299)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at void android.support.v7.app.AppCompatActivity.onPostCreate(android.os.Bundle) (AppCompatActivity.java:98)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at void android.app.Instrumentation.callActivityOnPostCreate(android.app.Activity, android.os.Bundle) (Instrumentation.java:1200)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at android.app.Activity android.app.ActivityThread.performLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent) (ActivityThread.java:2666)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at void android.app.ActivityThread.handleLaunchActivity(android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:2751)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at void android.app.ActivityThread.-wrap12(android.app.ActivityThread, android.app.ActivityThread$ActivityClientRecord, android.content.Intent, java.lang.String) (ActivityThread.java:-1)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at void android.app.ActivityThread$H.handleMessage(android.os.Message) (ActivityThread.java:1496)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at void android.os.Handler.dispatchMessage(android.os.Message) (Handler.java:102)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at void android.os.Looper.loop() (Looper.java:154)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at void android.app.ActivityThread.main(java.lang.String[]) (ActivityThread.java:6186)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at java.lang.Object java.lang.reflect.Method.invoke!(java.lang.Object, java.lang.Object[]) (Method.java:-2)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at void com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run() (ZygoteInit.java:889)
2019-02-08 18:19:02.921 10880-10880/com.example.twa_test I/art:     at void com.android.internal.os.ZygoteInit.main(java.lang.String[]) (ZygoteInit.java:779)
2019-02-08 18:19:03.284 10880-10880/com.example.twa_test D/LauncherActivity: Using URL from Manifest (https://slexom.gitlab.io/namya/).
2019-02-08 18:19:03.284 10880-10880/com.example.twa_test D/LauncherActivity: Launching Trusted Web Activity.
2019-02-08 18:19:03.470 10880-10923/com.example.twa_test I/Mali: Mali API Version : 401
2019-02-08 18:19:03.470 10880-10923/com.example.twa_test I/Mali: Mali REVISION: Linux-r4p0-00rel0  BUILD_DATE: 2014-11-10 20:23:11 
2019-02-08 18:19:03.477 10880-10923/com.example.twa_test I/OpenGLRenderer: Initialized EGL, version 1.4
2019-02-08 18:19:03.477 10880-10923/com.example.twa_test D/OpenGLRenderer: Swap behavior 1
2019-02-08 18:19:03.598 10880-10880/com.example.twa_test W/art: Before Android 4.1, method int android.support.v7.widget.DropDownListView.lookForSelectablePosition(int, boolean) would have incorrectly overridden the package-private method in android.widget.ListView

Screenshot

Answer 1

You may have opted into having Google Play sign your releases with a key they generated, and only use your key for the upload.

If you did, go to Google Play Console Release Management -> App Signing and copy the App signing certificate SHA-256 fingerprint and put it into the assetlinks.json file.

Answer 2

I faced the same issue today, that's what I've learnt:
Before trying to test your android application test your statement here:
https://developers.google.com/digital-asset-links/tools/generator
Fill in domain, package and fingerprint, then click "Test Statement"
If you see
"Success! Host [your web app] grants app deep linking to [android package].", then your web app is configured the right way, and there's something wrong with your device or app.
Most likely you'll see
"Invalid input field(s)"
You can open Chrome console on the Network tab in order to look at the server output. Probably you're going to see something like "Invalid site (URL cannot contain a path component, login information, query parameters or fragment identifiers)"
To fix this this you should put your assetlinks.json file to the root of your web app,
https://slexom.gitlab.io/.well-known/assetlinks.json in your case. You can checkout my sample repository. As you could see my file is accessible from https://antipovandrey.github.io/PWA/.well-known/assetlinks.json

Answer 3

when use google SHA-256 or just change fingerprint code be sure to clear chrome cache about your previous app or check cache-control of .json

Answer 4

In my case, I was running the app in the wrong flavour then what I used for signing. Only the release version of my app was signed in using SHA key and I was running the app in debug build.

It ran as expected when I corrected the flavor.