获取二进制 XML 文件第 141 行：尝试在空对象引用上调用虚拟方法“boolean java.lang.String.equals(java.lang.Object)”

Posted 2023-04-18

【中文标题】获取二进制 XML 文件第 141 行：尝试在空对象引用上调用虚拟方法“boolean java.lang.String.equals(java.lang.Object)”

【英文标题】：Getting Binary XML file line #141: Attempt to invoke virtual method 'boolean java.lang.String.equals(java.lang.Object)' on a null object reference

【发布时间】：2017-10-10 16:19:13

【问题描述】：

Logcat

05-11 19:14:52.567 4489-4489/? E/androidRuntime: 
FATAL EXCEPTION: main                                                  
       Process: com.grab.deals.dealcart, PID: 4489
       java.lang.RuntimeException: Unable to start activity ComponentInfocom.grab.deals.dealcart/com.grab.deals.dealcart.Full_view.Full_view: android.view.InflateException: Binary XML file line #141: Attempt to invoke virtual method 'boolean java.lang.String.equals(java.lang.Object)' on a null object reference
       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2416)
       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476)
       at android.app.ActivityThread.-wrap11(ActivityThread.java)
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344)
       at android.os.Handler.dispatchMessage(Handler.java:102)
       at android.os.Looper.loop(Looper.java:148)
       at android.app.ActivityThread.main(ActivityThread.java:5417)
       at java.lang.reflect.Method.invoke(Native Method)
       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726)
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616)
       Caused by: android.view.InflateException: Binary XML file line #141: Attempt to invoke virtual method 'boolean java.lang.String.equals(java.lang.Object)' on a null object reference
       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:284)
       at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:143)
       at com.grab.deals.dealcart.Full_view.Full_view.onCreate(Full_view.java:13)
       at android.app.Activity.performCreate(Activity.java:6237)
       at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107)
       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369)
       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) 
       at android.app.ActivityThread.-wrap11(ActivityThread.java) 
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) 
       at android.os.Handler.dispatchMessage(Handler.java:102) 
       at android.os.Looper.loop(Looper.java:148) 
       at android.app.ActivityThread.main(ActivityThread.java:5417) 
       at java.lang.reflect.Method.invoke(Native Method) 
       at com.android.internal.os.ZygoteInit$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 'boolean java.lang.String.equals(java.lang.Object)' on a null object reference
       at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:738)
       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.rInflate(LayoutInflater.java:838)
       at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798)
       at android.view.LayoutInflater.rInflate(LayoutInflater.java:838)
       at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798)
       at android.view.LayoutInflater.rInflate(LayoutInflater.java:838)
       at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798)
       at android.view.LayoutInflater.rInflate(LayoutInflater.java:838)
       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:284) 
       at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:143) 
       at com.grab.deals.dealcart.Full_view.Full_view.onCreate(Full_view.java:13) 
       at android.app.Activity.performCreate(Activity.java:6237) 
       at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1107) 
       at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2369) 
       at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2476) 
       at android.app.ActivityThread.-wrap11(ActivityThread.java) 
       at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1344) 
       at android.os.Handler.dispatchMessage(Handler.java:102) 
       at android.os.Looper.loop(Looper.java:148) 
       at android.app.ActivityThread.main(ActivityThread.java:5417) 
       at java.lang.reflect.Method.invoke(Native Method) 
       at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:726) 
       at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:616) 

扩展视图.xml

    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/activity_full_view"
    android:layout_
    android:layout_>
    <ScrollView
        android:layout_
        android:layout_>
        <LinearLayout
            android:layout_
            android:layout_
            android:orientation="vertical">
    <android.support.v7.widget.CardView
        android:layout_
        android:layout_
        android:layout_margin="5dp">
        <LinearLayout
            android:layout_
            android:layout_
            android:orientation="vertical">
        <ImageView
            android:layout_
            android:layout_

            android:id="@+id/img"/>
        <View
            android:layout_
            android:layout_/>
            <TextView
                android:layout_
                android:layout_
                android:text="Designer shirt"
                android:textSize="15dp"
                android:layout_marginLeft="10dp"
                android:textColor="#000"/>
            <LinearLayout
                android:layout_
                android:layout_
                android:orientation="horizontal">
                <TextView
                    android:layout_
                    android:layout_
                    android:textSize="12dp"
                    android:text="Speatial Price"
                    android:layout_marginLeft="10dp"
                    android:textColor="#34a853"/>
                <TextView
                    android:layout_
                    android:layout_marginLeft="5dp"
                    android:layout_
                    android:textColor="#000"
                    android:text="Ends in few hours"
                   />
            </LinearLayout>
            <LinearLayout
                android:layout_
                android:layout_
                android:orientation="horizontal">
            <TextView
                android:layout_
                android:layout_
                android:textSize="20dp"
                android:text="25,000"
                android:layout_marginLeft="10dp"
                android:textColor="#000"/>
                <TextView
                    android:layout_
                    android:layout_marginLeft="10dp"
                    android:layout_
                    android:textColor="@color/colorPrimary"
                    android:text="70%off"
                    android:textSize="15dp"/>
            </LinearLayout>
        <LinearLayout
            android:layout_
            android:layout_
            android:orientation="horizontal">
            <TextView
                android:layout_
                android:layout_marginLeft="10dp"
                android:layout_
                android:textColor="#34a853"
                android:text="4.1"/>

            <ImageView
                android:layout_
                android:layout_
                app:srcCompat="@drawable/ic_star_border_black_24dp"/>
            </LinearLayout>
            <View
                android:layout_
                android:layout_/>
<LinearLayout
    android:layout_
    android:layout_
    android:orientation="horizontal"
    android:gravity="center"
    android:layout_gravity="center"
    android:layout_marginBottom="5dp">


 <ImageView
     android:layout_
     android:layout_
     app:srcCompat="@drawable/copy"/>
    <TextView
        android:layout_
        android:layout_
        android:textColor="#000"
        android:layout_marginLeft="10dp"
        android:text="Copy Coupon"
        android:textSize="20sp"
        />


</LinearLayout>
        </LinearLayout>

    </android.support.v7.widget.CardView>


        <android.support.v7.widget.CardView
            android:layout_
            android:layout_
            android:layout_margin="5dp"
            >
            <LinearLayout
                android:layout_
                android:layout_
                android:orientation="vertical">
<TextView
    android:layout_
    android:layout_
    android:text="Details"
    android:layout_margin="20dp"
    android:textSize="20sp"
    android:textColor="#000"/>
                <view
                    android:layout_
                    android:layout_/>

                <TextView
                    android:layout_
                    android:layout_
                    android:textSize="17sp"
                    android:textColor="#000"
                    android:layout_margin="20dp"
                    android:text="Heighlets \n*shgdfshdflshflsjh\n*a;sjkdfjshgf"/>
            </LinearLayout>
        </android.support.v7.widget.CardView>

            <android.support.v7.widget.CardView
                android:layout_
                android:layout_
                android:layout_margin="5dp"
                >
                <LinearLayout
                    android:layout_
                    android:layout_
                    android:orientation="vertical">
                    <TextView
                        android:layout_
                        android:layout_
                        android:text="Terms and Conditions"
                        android:layout_margin="20dp"
                        android:textSize="20sp"
                        android:textColor="#000"/>
                    <view
                        android:layout_
                        android:layout_/>

                    <TextView
                        android:layout_
                        android:layout_
                        android:textSize="17sp"
                        android:textColor="#000"
                        android:layout_margin="20dp"
                        android:text="Heighlets \n*shgdfshdflshflsjh\n*a;sjkdfjshgf"/>
                </LinearLayout>
            </android.support.v7.widget.CardView>

            <android.support.v7.widget.CardView
                android:layout_
                android:layout_
                android:layout_margin="5dp"
                >
                <LinearLayout
                    android:layout_
                    android:layout_
                    android:orientation="vertical">
                    <TextView
                        android:layout_
                        android:layout_
                        android:text="Ratings &amp; Reviews"
                        android:layout_margin="20dp"
                        android:textSize="20sp"
                        android:textColor="#000"/>
                    <view
                        android:layout_
                        android:layout_/>
                    <LinearLayout
                        android:layout_
                        android:layout_
                        android:layout_gravity="center"
                        android:layout_margin="20dp"
                        android:orientation="vertical">
                    <LinearLayout
                        android:layout_
                        android:layout_
                        android:layout_gravity="center"
                        android:orientation="horizontal">

                        <TextView
                            android:layout_
                            android:layout_
                            android:text="4.1"
                            android:layout_marginRight="10dp"
                            android:textSize="40sp"/>
                        <ImageView
                            android:layout_
                            android:layout_
                            app:srcCompat="@drawable/ic_star_border_black_24dp"/>
                    </LinearLayout>
                        <TextView
                            android:layout_
                            android:layout_
                            android:text="1,500 Reviews"
                            />
                    </LinearLayout>

                           </LinearLayout>
            </android.support.v7.widget.CardView>
    </LinearLayout>
        </ScrollView>
<LinearLayout
    android:layout_
    android:layout_
    android:orientation="horizontal"
    android:background="#fff"
    android:layout_alignParentBottom="true"
    android:gravity="center">
    <Button
        android:layout_
        android:layout_
        android:text="Share"
        style="@style/Widget.AppCompat.Button.Borderless.Colored"/>

    <Button
        android:layout_
        android:layout_
        android:text="Visit"
        android:textColor="#fff"
        style="@style/Widget.AppCompat.Button.Borderless.Colored"
        android:background="@color/colorPrimary"/>



</LinearLayout>


</RelativeLayout>

Full_View.java

public class Full_View extends Fragment 

    @Nullable
    @Override
    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) 
        View rootview = inflater.inflate(R.layout.activity_full_view,container,false);
        return rootview;
    

【问题讨论】：

发布Full_view.java的onCreate()方法

完成@billynomates

它已经在 logcat line# 141 中提到了自己

这能回答你的问题吗？ NPE while inflating layout (Attempt to invoke virtual method 'boolean java.lang.String.equals(java.lang.Object)' on a null object reference)

【参考方案1】：

 <view
                android:layout_
                android:layout_/>

将view 更改为View （小写 v 到大写 V）

【讨论】：

谢谢@billyomates

您好！哈哈，怎么会有很多人像我一样犯这个搞笑的错误？！如果没有这个答案，我不知道如何弄清楚发生了什么疯狂的事情..

我花了两天时间-_-

这太烦人了。为什么 Android Studio 会对此发出警告？

为我节省了很多时间，谢谢

【参考方案2】：

请

         <view
            android:layout_
            android:layout_/>  

改成

        <View
            android:layout_
            android:layout_/> 

【讨论】：

感谢您的回答。

【参考方案3】：

它是您的 ExtendView.xml 中的视图，视图替换它。

【参考方案4】：

你的view写错了，应该是view

【讨论】：

这如何为现有已接受的答案添加任何内容？

我在这个问题上被困了 3 个小时，只是想确保任何查看这篇文章的人这是正确的答案

最好通过投票正确答案来表达这一点，而不是添加另一个内容基本相同的答案。