android - 二进制 XML 文件行 #2 : Error inflating class android. support.constraint.Drawlayout

Question

您好，在下面的代码中，我遇到了以下 logcat 错误的问题。

我创建了一个包含左侧抽屉导航的应用程序。当我们从抽屉中单击“帮助”菜单时，它显示以下错误并使应用程序崩溃。崩溃时我收到以下错误。

谁能帮帮我

日志:

 Caused by: android.view.InflateException: Binary XML file line #2: Binary XML file line #2: Error inflating class android.support.constraint.Drawlayout
     Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class android.support.constraint.Drawlayout
     Caused by: java.lang.ClassNotFoundException: Didn't find class "android.support.constraint.Drawlayout" on path: DexPathList[[zip file "/data/app/com.example

HelpActivity.java:

public class HelpActivity extends AppCompatActivity {



    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_help);
        Mint.initAndStartSession(this.getApplication(), ConstantUtils.SPLUNK_MINK_KEY);

        DrawerLayout txtSendMail;
        DrawerLayout txtCall;
        DrawerLayout txtEmailFeedback;
        DrawerLayout txtWebsite;

        txtSendMail=(DrawerLayout)findViewById(R.id.txt_send_mail);
        txtCall=(DrawerLayout)findViewById(R.id.txt_call);
        txtEmailFeedback=(DrawerLayout)findViewById(R.id.txt_email_feedback);
        txtWebsite=(DrawerLayout)findViewById(R.id.txt_website);


        txtSendMail.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String toEmailAddress = "customercare@havells.com";
                Intent email = new Intent(Intent.ACTION_SEND);
                email.putExtra(Intent.EXTRA_EMAIL, new String[]{ toEmailAddress });
                email.setType("message/rfc822");
                startActivity(Intent.createChooser(email, "Choose an Email client :"));
            }
        });
        txtEmailFeedback.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String toEmailAddress = "customercare@havells.com";
                Intent email = new Intent(Intent.ACTION_SEND);
                email.putExtra(Intent.EXTRA_EMAIL, new String[]{ toEmailAddress });
                email.setType("message/rfc822");
                startActivity(Intent.createChooser(email, "Choose an Email client :"));
            }
        });
        txtCall.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String phoneNumnber = "tel:1800103131";
                Intent callIntent = new Intent(Intent.ACTION_DIAL);
                callIntent.setData(Uri.parse(phoneNumnber));
                startActivity(callIntent);
            }
        });
        txtWebsite.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Uri uri = Uri.parse("http://smart.havells.com");
                Intent intent = new Intent(Intent.ACTION_VIEW, uri);
                startActivity(intent);
            }
        });



    }




    public void BackToGeyser(View view) {

        final ImageView viewToAnimate = (ImageView) findViewById(R.id.back_arrow_to_geyser_id);

        Animation in = AnimationUtils.loadAnimation(this, android.R.anim.fade_in);
        viewToAnimate.startAnimation(in);
        viewToAnimate.setVisibility(View.VISIBLE);

        onBackPressed();


    }

}

Activity 帮助:

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.Drawlayout 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"
    android:background="@drawable/chipmonk_background">

    <RelativeLayout
        android:id="@+id/toolbar"
        android:layout_width="match_parent"
        android:layout_height="@dimen/toolbar_height"
        android:layout_gravity="center_vertical"
        android:background="@color/color_toolbar"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <RelativeLayout
            android:layout_width="25dp"
            android:layout_height="25dp"
            android:layout_centerVertical="true"
            android:layout_marginStart="10dp"
            android:onClick="BackToGeyser">

            <ImageView
                android:id="@+id/back_arrow_to_geyser_id"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerVertical="true"
                android:layout_marginStart="2dp"
                android:background="@drawable/ic_arrow_back"
                android:onClick="BackToGeyser" />
        </RelativeLayout>
        <!--
                <RelativeLayout
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_marginStart="25sp"
                    android:layout_marginTop="2sp">
                    <ImageView
                        android:layout_width="wrap_content"
                        android:layout_height="wrap_content"
                        android:background="@drawable/menu"/>
                </RelativeLayout>
        -->
        <RelativeLayout
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_centerHorizontal="true"
            android:layout_centerVertical="true"
            android:layout_gravity="center_horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_centerHorizontal="true"
                android:layout_centerVertical="true"
                android:text="@string/help"
                android:textColor="@color/white"
                android:textSize="@dimen/heading_font_size" />

        </RelativeLayout>


    </RelativeLayout>

    <android.support.constraint.Guideline
        android:id="@+id/guideline20"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintGuide_percent="0.75" />

    <android.support.constraint.Guideline
        android:id="@+id/guideline21"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintGuide_percent="0.55" />

    <android.support.constraint.Guideline
        android:id="@+id/guideline22"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintGuide_percent="0.35" />

    <android.support.constraint.Guideline
        android:id="@+id/guideline23"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        app:layout_constraintGuide_percent="0.12" />

    <android.support.constraint.Guideline
        android:id="@+id/guideline24"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        app:layout_constraintGuide_percent="0.88" />

    <TextView
        android:id="@+id/textView33"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:fontFamily="@font/roboto_medium"
        android:text="24/7 Customer Support"
        android:textColor="@android:color/black"
        app:layout_constraintStart_toStartOf="@+id/guideline23"
        app:layout_constraintTop_toTopOf="@+id/guideline22" />

    <android.support.constraint.ConstraintLayout
        android:id="@+id/txt_send_mail"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginBottom="16dp"
        android:layout_marginEnd="24dp"
        android:layout_marginTop="8dp"
        android:background="@drawable/login_button_background"
        android:elevation="4dp"
        app:layout_constraintBottom_toTopOf="@+id/guideline21"
        app:layout_constraintDimensionRatio="w,1.5:1"
        app:layout_constraintEnd_toStartOf="@+id/txt_call"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintHorizontal_chainStyle="packed"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/textView33">

        <ImageView
            android:id="@+id/imageView9"
            android:layout_width="wrap_content"
            android:layout_height="0dp"
            android:layout_marginTop="16dp"
            app:layout_constraintBottom_toTopOf="@+id/guideline25"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:srcCompat="@drawable/ic_message" />

        <android.support.constraint.Guideline
            android:id="@+id/guideline25"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            app:layout_constraintGuide_percent="0.55" />

        <TextView
            android:id="@+id/textView34"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="8dp"
            android:fontFamily="@font/roboto_medium"
            android:text="send an email"
            android:textAlignment="center"
            android:textAllCaps="true"
            android:textColor="@android:color/white"
            android:textSize="10sp"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="@+id/guideline25" />
    </android.support.constraint.ConstraintLayout>

    <android.support.constraint.ConstraintLayout
        android:id="@+id/txt_call"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginBottom="16dp"
        android:layout_marginTop="8dp"
        android:background="@drawable/login_button_background"
        android:elevation="4dp"
        app:layout_constraintBottom_toTopOf="@+id/guideline21"
        app:layout_constraintDimensionRatio="w,1.5:1"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.5"
        app:layout_constraintStart_toEndOf="@+id/txt_send_mail"
        app:layout_constraintTop_toBottomOf="@+id/textView33"
        app:layout_constraintVertical_bias="0.0">

        <ImageView
            android:id="@+id/imageView10"
            android:layout_width="wrap_content"
            android:layout_height="0dp"
            android:layout_marginTop="16dp"
            app:layout_constraintBottom_toTopOf="@+id/guideline27"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:srcCompat="@drawable/ic_phone" />

        <android.support.constraint.Guideline
            android:id="@+id/guideline27"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            app:layout_constraintGuide_percent="0.55" />

        <TextView
            android:id="@+id/textView36"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="8dp"
            android:fontFamily="@font/roboto_medium"
            android:text="call us"
            android:textAlignment="center"
            android:textAllCaps="true"
            android:textColor="@android:color/white"
            android:textSize="10sp"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="@+id/guideline27" />
    </android.support.constraint.ConstraintLayout>

    <TextView
        android:id="@+id/textView38"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="4dp"
        android:fontFamily="@font/roboto_medium"
        android:text="Send feedback on Geyser App "
        android:textColor="@android:color/black"
        app:layout_constraintStart_toStartOf="@+id/guideline23"
        app:layout_constraintTop_toTopOf="@+id/guideline21" />

    <android.support.constraint.ConstraintLayout
        android:id="@+id/txt_email_feedback"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginBottom="16dp"
        android:layout_marginTop="8dp"
        android:background="@drawable/login_button_background"
        android:elevation="4dp"
        app:layout_constraintBottom_toTopOf="@+id/guideline20"
        app:layout_constraintDimensionRatio="h,1.5:1"
        app:layout_constraintEnd_toEndOf="@+id/txt_send_mail"
        app:layout_constraintStart_toStartOf="@+id/txt_send_mail"
        app:layout_constraintTop_toBottomOf="@+id/textView38">

        <ImageView
            android:id="@+id/imageView11"
            android:layout_width="wrap_content"
            android:layout_height="0dp"
            android:layout_marginTop="16dp"
            app:layout_constraintBottom_toTopOf="@+id/guideline1"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:srcCompat="@drawable/ic_message" />

        <android.support.constraint.Guideline
            android:id="@+id/guideline1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            app:layout_constraintGuide_percent="0.55" />

        <TextView
            android:id="@+id/textView1"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="8dp"
            android:fontFamily="@font/roboto_medium"
            android:text="email us"
            android:textAlignment="center"
            android:textAllCaps="true"
            android:textColor="@android:color/white"
            android:textSize="10sp"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="@+id/guideline1" />
    </android.support.constraint.ConstraintLayout>

    <TextView
        android:id="@+id/textView39"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:fontFamily="@font/roboto_medium"
        android:text="For any further details"
        android:textColor="@android:color/black"
        app:layout_constraintStart_toStartOf="@+id/guideline23"
        app:layout_constraintTop_toTopOf="@+id/guideline20" />

    <android.support.constraint.ConstraintLayout
        android:id="@+id/txt_website"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginTop="8dp"
        android:background="@drawable/login_button_background"
        android:elevation="4dp"
        app:layout_constraintDimensionRatio="1.5:1"
        app:layout_constraintEnd_toEndOf="@+id/txt_send_mail"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="@+id/txt_send_mail"
        app:layout_constraintTop_toBottomOf="@+id/textView39">

        <ImageView
            android:id="@+id/imageView1"
            android:layout_width="wrap_content"
            android:layout_height="0dp"
            android:layout_marginTop="16dp"
            app:layout_constraintBottom_toTopOf="@+id/guideline2"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent"
            app:srcCompat="@drawable/ic_web" />

        <android.support.constraint.Guideline
            android:id="@+id/guideline2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:orientation="horizontal"
            app:layout_constraintGuide_percent="0.55" />

        <TextView
            android:id="@+id/textView2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginTop="8dp"
            android:fontFamily="@font/roboto_medium"
            android:text="havells india ltd"
            android:textAlignment="center"
            android:textAllCaps="true"
            android:textColor="@android:color/white"
            android:textSize="10sp"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="@+id/guideline2" />
    </android.support.constraint.ConstraintLayout>

</android.support.constraint.Drawlayout>

Answer 1

输入错误，进行如下修改

 ConstraintLayout txtSendMail;
    ConstraintLayout txtCall;
    ConstraintLayouttxtEmailFeedback;
    ConstraintLayout txtWebsite;

    txtSendMail=(ConstraintLayout)findViewById(R.id.txt_send_mail);
    txtCall=(ConstraintLayout)findViewById(R.id.txt_call);
    txtEmailFeedback=(ConstraintLayout)findViewById(R.id.txt_email_feedback);
    txtWebsite=(ConstraintLayout)findViewById(R.id.txt_website);