英文:
android.view.InflateException: Binary XML file line #38: Binary XML file line #38: Error inflating class fragment
问题
错误分析与建议：
根据提供的信息，您的 Android 应用在首页出现错误，主要是由于 XML 布局文件中的某个片段（<fragment>）引发的问题，导致应用崩溃。同时，还提供了 Java 文件中的代码，这些代码负责处理按钮点击事件和一些逻辑。以下是关于问题的分析和建议：
-
XML 布局错误：
在您提供的 XML 布局文件中，第 38 行包含一个<fragment>元素，而根据错误堆栈信息，这是导致应用崩溃的根本原因之一。具体的错误是Error inflating class fragment。这种情况通常与<fragment>元素中指定的片段类名有关。 -
解决方法：
您可以尝试以下解决方法来处理这个问题：- 确保
tools:context=".HomeActivity"属性指向正确的活动类名。 - 检查
android:name属性是否指向有效的片段类名。 - 确保片段类存在并正确引用。
- 确保
-
其他建议：
除了 XML 布局问题外，您的 Java 代码看起来还不错。如果您的应用仍然存在问题，请确保以下几点：- 检查
MapsActivity类是否存在，并且在launchactivity方法中正确引用。 - 如果涉及网络请求或 Firebase 等其他功能，确保您已正确配置这些部分。
- 检查
请根据上述建议检查和调整您的代码，特别是修复 XML 布局文件中的问题，这应该能够解决您遇到的应用崩溃问题。如果问题仍然存在，请提供更多的错误信息或日志，以便更详细地分析和提供帮助。
英文:
Android terminal
I getting errors in homepage of my new app of helpline,I tried to check all but still not running please check and comment accordingly Please review
E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.googlemaps, PID: 18785
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.googlemaps/com.example.googlemaps.HomeActivity}: android.view.InflateException: Binary XML file line #38: Binary XML file line #38: Error inflating class fragment
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3121)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3264)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1955)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7078)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:494)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:974)
Caused by: android.view.InflateException: Binary XML file line #38: Binary XML file line #38: Error inflating class fragment
Caused by: android.view.InflateException: Binary XML file line #38: Error inflating class fragment
Caused by: java.lang.NullPointerException
at java.lang.VMClassLoader.findLoadedClass(Native Method)
at java.lang.ClassLoader.findLoadedClass(ClassLoader.java:738)
at java.lang.ClassLoader.loadClass(ClassLoader.java:363)
at java.lang.ClassLoader.loadClass(ClassLoader.java:312)
at android.app.Fragment.instantiate(Fragment.java:524)
at android.app.FragmentContainer.instantiate(FragmentContainer.java:53)
at android.app.FragmentManagerImpl.onCreateView(FragmentManager.java:3551)
at android.app.FragmentController.onCreateView(FragmentController.java:103)
at android.app.Activity.onCreateView(Activity.java:6445)
at androidx.fragment.app.FragmentActivity.onCreateView(FragmentActivity.java:338)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:819)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:769)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:902)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:863)
at android.view.LayoutInflater.inflate(LayoutInflater.java:554)
at android.view.LayoutInflater.inflate(LayoutInflater.java:461)
at android.view.LayoutInflater.inflate(LayoutInflater.java:383)
at androidx.appcompat.app.AppCompatDelegateImpl.setContentView(AppCompatDelegateImpl.java:555)
at androidx.appcompat.app.AppCompatActivity.setContentView(AppCompatActivity.java:161)
at com.example.googlemaps.HomeActivity.onCreate(HomeActivity.java:24)
at android.app.Activity.performCreate(Activity.java:7327)
at android.app.Activity.performCreate(Activity.java:7318)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1275)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:3101)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:3264)
at android.app.servertransaction.LaunchActivityItem.execute(LaunchActivityItem.java:78)
at android.app.servertransaction.TransactionExecutor.executeCallbacks(TransactionExecutor.java:108)
at android.app.servertransaction.TransactionExecutor.execute(TransactionExecutor.java:68)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1955)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:214)
at android.app.ActivityThread.main(ActivityThread.java:7078)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:494)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:974)
xml file
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 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"
tools:context="HomeActivity">
<TextView
android:id="@+id/textView2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="125dp"
android:layout_marginTop="5dp"
android:text="Welcome! You are logged in"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:ignore="HardcodedText"
android:layout_marginStart="125dp" />
<TextView
android:id="@+id/texttitle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginLeft="125dp"
android:layout_marginTop="25dp"
android:text="24x7 SECURITY HELPLINE"
android:textSize="25sp"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
tools:ignore="HardcodedText"
android:layout_marginStart="50dp" />
<fragment
android:id="@+id/home"
android:layout_height="match_parent"
android:layout_width="140dp"
android:layout_marginTop="80dp"
tools:context=".HomeActivity"
android:background="#FA8072" />
<ImageButton
android:id="@+id/imageButton"
android:layout_width="140dp"
android:layout_height="130dp"
android:layout_marginTop="80dp"
tools:src="@tools:sample/avatars"
tools:ignore="HardcodedText"
android:contentDescription="Profile Pic"/>
<Button
android:id="@+id/profile"
android:layout_width="140dp"
android:layout_height="wrap_content"
android:layout_marginTop="210dp"
android:text="Your Profile"
tools:ignore="HardcodedText"/>
<Button
android:id="@+id/complain"
android:layout_width="140dp"
android:layout_height="wrap_content"
android:layout_marginTop="250dp"
android:text="Complain"
tools:ignore="HardcodedText"/>
<Button
android:id="@+id/tips"
android:layout_width="140dp"
android:layout_height="wrap_content"
android:layout_marginTop="290dp"
android:text="Safety Tips"
tools:ignore="HardcodedText"/>
<Button
android:id="@+id/alerts"
android:layout_width="140dp"
android:layout_height="wrap_content"
android:layout_marginTop="330dp"
android:text="Alerts"
tools:ignore="HardcodedText"/>
<Button
android:id="@+id/emergency"
android:layout_width="140dp"
android:layout_height="wrap_content"
android:layout_marginTop="370dp"
android:text="emergency"
tools:ignore="HardcodedText"/>
<Button
android:id="@+id/nearby"
android:layout_width="140dp"
android:layout_height="wrap_content"
android:layout_marginTop="410dp"
android:text="NearBy"
tools:ignore="HardcodedText"/>
<Button
android:id="@+id/volunteer"
android:layout_width="140dp"
android:layout_height="wrap_content"
android:layout_marginTop="450dp"
android:text="Volunteer"
tools:ignore="HardcodedText"/>
<Button
android:id="@+id/logout"
android:layout_width="140dp"
android:layout_height="wrap_content"
android:layout_marginLeft="1dp"
android:layout_marginTop="490dp"
android:text="Logout"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="@+id/textView2"
tools:ignore="HardcodedText"
android:layout_marginStart="1dp" />
<Button
android:id="@+id/btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="170dp"
android:layout_marginLeft="170dp"
android:layout_marginTop="400dp"
android:shadowRadius="3"
android:textColor="#0000FF"
android:text="Location sharing"
tools:ignore="HardcodedText" />
<Button
android:id="@+id/custom_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="150dp"
android:layout_marginLeft="150dp"
android:background="@drawable/custom_button"
android:layout_marginStart="150dp" />
<Switch
android:id="@+id/switch_enable_button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="true"
android:layout_marginLeft="200dp"
android:layout_marginTop="350dp"
android:text="Panic Alert"
android:layout_marginStart="200dp"
tools:ignore="HardcodedText"/>
<TextView
android:id="@+id/textView3"
android:layout_width="80dp"
android:layout_height="wrap_content"
android:layout_marginTop="225dp"
android:layout_marginLeft="210dp"
android:text="Panic Mode"
android:textColor="@color/colorPrimaryDark"
android:textSize="20sp"
tools:ignore="HardcodedText"
android:layout_marginStart="200dp" />
<Button
android:id="@+id/report"
android:layout_width="120dp"
android:layout_height="wrap_content"
android:layout_marginTop="480dp"
android:layout_marginLeft="170dp"
android:text="Report"
android:textColor="#FF0000"
tools:ignore="HardcodedText"
android:layout_marginStart="180dp" />
<TextView
android:id="@+id/textView4"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="130dp"
android:layout_marginLeft="150dp"
tools:ignore="HardcodedText"
android:text="Create your panic alert button "
android:layout_marginStart="150dp" />
<Button
android:id="@+id/button5"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="650dp"
android:layout_marginLeft="150dp"
tools:ignore="HardcodedText"
android:text="Feedback"
android:textColor="#FFA500"
android:layout_marginStart="150dp" />
<Button
android:id="@+id/button6"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="650dp"
android:layout_marginLeft="280dp"
tools:ignore="HardcodedText"
android:text="Write to us"
android:textColor="#FFA500"
android:layout_marginStart="280dp" />
</FrameLayout>
java file
package com.example.googlemaps;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.CompoundButton;
import android.widget.Switch;
import android.widget.Toast;
import androidx.appcompat.app.AppCompatActivity;
import com.google.firebase.auth.FirebaseAuth;
public class HomeActivity extends AppCompatActivity {
Button btnLogout;
Button customButton;
Switch switchEnableButton;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_home);
Button btn = findViewById(R.id.btn);
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
launchactivity();
}
});
btnLogout = findViewById(R.id.logout);
customButton = findViewById(R.id.custom_button);
switchEnableButton = findViewById(R.id.switch_enable_button);
customButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Toast.makeText(HomeActivity.this, "Click", Toast.LENGTH_SHORT).show();
}
});
switchEnableButton.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
if (isChecked) {
customButton.setEnabled(true);
} else {
customButton.setEnabled(false);
}
}
});
btnLogout.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
FirebaseAuth.getInstance().signOut();
Intent intToMain = new Intent(HomeActivity.this, LoginActivity.class);
startActivity(intToMain);
}
});
}
public void launchactivity(){
Intent intent = new Intent( HomeActivity.this, MapsActivity.class );
startActivity( intent );
}
}
I getting errors in homepage of my new app of helpline,I tried to check all but still not running please check and comment accordingly
Please review
答案1
得分: 0
你忘记了在你的片段中添加android:name=""属性。如果你想要动态添加片段，请使用ViewGroup（例如FrameLayout等）。
英文:
You forgot about android:name="" attribute in your fragment. If you want to add your fragment dynamically, please use ViewGroup (FrameLayout, etc.)
答案2
得分: 0
你在定义 XML 片段的代码有错误。请阅读这个链接：https://developer.android.com/training/basics/fragments/creating。
希望这能帮到你。
英文:
Your code to define a fragment in xml is incorrectly. Pls read this: https://developer.android.com/training/basics/fragments/creating.
Hope this help.
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