Question

我正在尝试用2 Fragments来宣传活动。 错误：

我想要对两个片段进行充气，以便它们显示在视图上。即使我不断收到错误，我也无法夸大视图。

Caused by: android.view.InflateException: Binary XML file line #13: Error inflating class fragmentat 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 #13: Binary XML file line #13: Error inflating class fragment
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 com.android.internal.policy.PhoneWindow.setContentView(PhoneWindow.java:393)
at android.app.Activity.setContentView(Activity.java:2166)
at aa.tuuts.MainActivity.onCreate(MainActivity.java:12)
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)

代码：

活动：

public class MainActivity extends FragmentActivity implements FragmentOne.OnFragmentInteractionListener {

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
}

public void sampleMethod(){
}

}

片段一：

import android.content.Context;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.RadioButton;
import android.widget.RadioGroup;
import android.widget.Spinner;


public class FragmentOne extends Fragment {

    private OnFragmentInteractionListener mListener;
    public FragmentOne() {
        // Required empty public constructor
    }


    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        final View v = inflater.inflate(R.layout.fragment_one, container, false);
        return v;
    }

    @Override
    public void onAttach(Context context) {
        super.onAttach(context);
        if (context instanceof OnFragmentInteractionListener) {
            mListener = (OnFragmentInteractionListener) context;
        } else {
            throw new RuntimeException(context.toString()
                    + " must implement OnFragmentInteractionListener");
        }
    }

    @Override
    public void onDetach() {
        super.onDetach();
        mListener = null;
    }
    public interface OnFragmentInteractionListener {
        void sampleMethod();
    }
}

片段二：

    import android.content.Context;
import android.net.Uri;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;


public class FragmentTwo extends Fragment {

//    private OnFragmentInteractionListener mListener;


    public FragmentTwo() {
        // Required empty public constructor
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        // Inflate the layout for this fragment
        View v = inflater.inflate(R.layout.fragment_two, container, false);
        return v;
    }

    @Override
    public void onAttach(Context context) {
        super.onAttach(context);
//        if (context instanceof OnFragmentInteractionListener) {
//            mListener = (OnFragmentInteractionListener) context;
//        } else {
//            throw new RuntimeException(context.toString()
//                    + " must implement OnFragmentInteractionListener");
//        }
    }

    @Override
    public void onDetach() {
        super.onDetach();
//        mListener = null;
    }
}

活动XML：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="aa.tuuts.MainActivity">


    <fragment
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:name="aa.tuuts.FragmentOne"
        android:id="@+id/fragmentOne"
        android:layout_alignParentTop="true"
        android:layout_centerHorizontal="true"
        tools:layout="@layout/fragment_one" />

    <fragment
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:name="aa.tuuts.FragmentTwo"
        android:id="@+id/fragmentTwo"
        android:layout_below="@+id/fragmentOne"
        android:layout_centerHorizontal="true"
        tools:layout="@layout/fragment_two" />
</RelativeLayout>

Answer 1

嗯。这很奇怪。

我构建了你的代码，它工作正常。

所以请清理代码并重建。也许在构建过程中发生了一些错误。如果不正常，请关闭Android Studio并重新启动。

希望对你有所帮助！

Android错误膨胀类片段

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