Androidアプリでビルドは通るが強制終了されてしまう

Question

Androidアプリとマイコン間でBluetooth通信を行いたい

https://www.hiramine.com/programming/bluetoothcommunicator/02_scan_device.html
上記のサイトをまねしてアプリとマイコンでBluetooth通信を行いたいと考えています。
■■な機能を実装中に以下のエラーメッセージが発生しました。

発生している問題・エラーメッセージ

ビルドは通るのですが、アプリ上でBluetoothデバイス検索ボタンをタップするとアプリが強制的に終了されてしまう。

E/AndroidRuntime: FATAL EXCEPTION: main
    Process: com.example.bluetoothcommunicator02, PID: 23648
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.bluetoothcommunicator02/com.example.bluetoothcommunicator02.DeviceListActivity}: android.view.InflateException: Binary XML file line #2: Binary XML file line #2: Error inflating class android.support.constraint.ConstraintLayout
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2609)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2675)
        at android.app.ActivityThread.access$900(ActivityThread.java:195)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1515)
        at android.os.Handler.dispatchMessage(Handler.java:111)
        at android.os.Looper.loop(Looper.java:210)
        at android.app.ActivityThread.main(ActivityThread.java:5943)
        at java.lang.reflect.Method.invoke(Native Method)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:956)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:817)
     Caused by: android.view.InflateException: Binary XML file line #2: Binary XML file line #2: Error inflating class android.support.constraint.ConstraintLayout
        at android.view.LayoutInflater.inflate(LayoutInflater.java:561)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:437)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:380)
        at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:469)
        at androidx.appcompat.app.AppCompatActivity.setContentView(AppCompatActivity.java:140)
        at com.example.bluetoothcommunicator02.DeviceListActivity.onCreate(DeviceListActivity.java:170)
        at android.app.Activity.performCreate(Activity.java:6405)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1116)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2562)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2675) 
        at android.app.ActivityThread.access$900(ActivityThread.java:195) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1515) 
        at android.os.Handler.dispatchMessage(Handler.java:111) 
        at android.os.Looper.loop(Looper.java:210) 
        at android.app.ActivityThread.main(ActivityThread.java:5943) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:956) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:817) 
     Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class android.support.constraint.ConstraintLayout
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:803)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:731)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:514)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:437) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:380) 
        at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:469) 
        at androidx.appcompat.app.AppCompatActivity.setContentView(AppCompatActivity.java:140) 
        at com.example.bluetoothcommunicator02.DeviceListActivity.onCreate(DeviceListActivity.java:170) 
        at android.app.Activity.performCreate(Activity.java:6405) 
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1116) 
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2562) 
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2675) 
        at android.app.ActivityThread.access$900(ActivityThread.java:195) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1515) 
        at android.os.Handler.dispatchMessage(Handler.java:111) 
        at android.os.Looper.loop(Looper.java:210) 
        at android.app.ActivityThread.main(ActivityThread.java:5943) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:956) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:817) 
     Caused by: java.lang.ClassNotFoundException: Didn't find class "android.support.constraint.ConstraintLayout" on path: DexPathList[[zip file "/data/app/com.example.bluetoothcommunicator02-2/base.apk", zip file "/data/app/com.example.bluetoothcommunicator02-2/split_lib_dependencies_apk.apk", zip file "/data/app/com.example.bluetoothcommunicator02-2/split_lib_slice_0_apk.apk", zip file "/data/app/com.example.bluetoothcommunicator02-2/split_lib_slice_1_apk.apk", zip file "/data/app/com.example.bluetoothcommunicator02-2/split_lib_slice_2_apk.apk", zip file "/data/app/com.example.bluetoothcommunicator02-2/split_lib_slice_3_apk.apk", zip file "/data/app/com.example.bluetoothcommunicator02-2/split_lib_slice_4_apk.apk", zip file "/data/app/com.example.bluetoothcommunicator02-2/split_lib_slice_5_apk.apk", zip file "/data/app/com.example.bluetoothcommunicator02-2/split_lib_slice_6_apk.apk", zip file "/data/app/com.example.bluetoothcommunicator02-2/split_lib_slice_7_apk.apk", zip file "/data/app/com.example.bluetoothcommunicator02-2/split_lib_slice_8_apk.apk", zip file "/data/app/com.example.bluetoothcommunicator02-2/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/com.example.bluetoothcommunicator02-2/lib/arm, /vendor/lib, /system/lib]]
        at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
        at android.view.LayoutInflater.createView(LayoutInflater.java:605)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:791)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:731) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:514) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:437) 
        at android.view.LayoutInflater.inflate(LayoutInflater.java:380) 
        at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:469) 
        at androidx.appcompat.app.AppCompatActivity.setContentView(AppCompatActivity.java:140) 
        at com.example.bluetoothcommunicator02.DeviceListActivity.onCreate(DeviceListActivity.java:170) 
        at android.app.Activity.performCreate(Activity.java:6405) 
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1116) 
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2562) 
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2675) 
        at android.app.ActivityThread.access$900(ActivityThread.java:195) 
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1515) 
        at android.os.Handler.dispatchMessage(Handler.java:111) 
        at android.os.Looper.loop(Looper.java:210) 
        at android.app.ActivityThread.main(ActivityThread.java:5943) 
        at java.lang.reflect.Method.invoke(Native Method) 
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:956) 
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:817) 
    	Suppressed: java.lang.ClassNotFoundException: android.support.constraint.ConstraintLayout
        at java.lang.Class.classForName(Native Method)
    		at java.lang.BootClassLoader.findClass

該当のソースコード

https://www.hiramine.com/programming/bluetoothcommunicator/02_scan_device.html

試したこと

ここに問題に対して試したことを記載してください。

補足情報

コピー＆ペーストコードを入力しAlt+Enterでインポートを追加していきました。
しかし、import android.support.v7.app.AppCompatActivity;は追加されませんでした。
なぜなのでしょうか？

Comments

[退会済みユーザー]

エラーが書いてませんが。

Answer 1

Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class android.support.constraint.ConstraintLayout

　

Caused by: java.lang.ClassNotFoundException: Didn't find class "android.support.constraint.ConstraintLayout" on path: DexPathList[[zip file "/data/app/com.example.bluetoothcommunicator02-2/base.apk", zip file "/data/app/com.example.bluetoothcommunicator02-2/split_lib_dependencies_apk.apk", zip file "/data/app/com.example.bluetoothcommunicator02-2/split_lib_slice_0_apk.apk", zip file "/data/app/com.example.bluetoothcommunicator02-2/split_lib_slice_1_apk.apk", zip file "/data/app/com.example.bluetoothcommunicator02-2/split_lib_slice_2_apk.apk", zip file "/data/app/com.example.bluetoothcommunicator02-2/split_lib_slice_3_apk.apk", zip file "/data/app/com.example.bluetoothcommunicator02-2/split_lib_slice_4_apk.apk", zip file "/data/app/com.example.bluetoothcommunicator02-2/split_lib_slice_5_apk.apk", zip file "/data/app/com.example.bluetoothcommunicator02-2/split_lib_slice_6_apk.apk", zip file "/data/app/com.example.bluetoothcommunicator02-2/split_lib_slice_7_apk.apk", zip file "/data/app/com.example.bluetoothcommunicator02-2/split_lib_slice_8_apk.apk", zip file "/data/app/com.example.bluetoothcommunicator02-2/split_lib_slice_9_apk.apk"],nativeLibraryDirectories=[/data/app/com.example.bluetoothcommunicator02-2/lib/arm, /vendor/lib, /system/lib]]

ってあるんで、ConstraintLayoutがインポートされてないんだと思います。

Comments

[kantou_kenkyu]

import android.support.constraint.ConstraintLayout;
と入力するとConstraintLayoutシンボルが解決できませんとエラーが出てしまいます。

[退会済みユーザー]

gradleファイルに追加してください。

[kantou_kenkyu]

すみませんどのgrableファイルにどのように追加すればいいのでしょうか？

[退会済みユーザー]

appの下の方です。
てか基本的に追加するのはこちらです。