Android 报错 android.view.InflateException: Binary XML file line #7: Binary XML file line #7: Error inflating class com.coolweather.android.fragment

我在学习安卓开发中的碎片(Fragment)时遇到的报错,特此记录下来,其实问题很简单,下面是会产生报错的java代码和xml代码:

package com.example.ui_test;

import android.annotation.SuppressLint;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;


@SuppressLint("ValidFragment")
class NewsContentFragment extends Fragment {
   private View view;

   @Nullable
   @Override
   public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
      view = inflater.inflate(R.layout.news_content_frag,container,false);
      return view;
   }

   public void refresh(String newsTitle,String newsContent){
      View visibilityLayout = view.findViewById(R.id.visibility_layout);
      visibilityLayout.setVisibility(View.VISIBLE);
      TextView newsTitleText = (TextView) view.findViewById(R.id.news_title);
      TextView newsContentText = (TextView) view.findViewById(R.id.news_content);
      newsTitleText.setText(newsTitle);
      newsContentText.setText(newsContent);
   }

}
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout android:layout_width="match_parent"
    android:layout_height="match_parent"
    xmlns:android="http://schemas.android.com/apk/res/android">

    <LinearLayout
        android:id="@+id/visibility_layout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:visibility="invisible">

        <TextView
            android:id="@+id/news_title"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:gravity="center"
            android:padding="10dp"
            android:textSize="20sp"/>

        <View
            android:layout_width="match_parent"
            android:layout_height="1dp"
            android:background="#000"/>

        <TextView
            android:id="@+id/news_content"
            android:layout_width="match_parent"
            android:layout_height="0dp"
            android:layout_weight="1"
            android:padding="15dp"
            android:textSize="18sp"/>

    </LinearLayout>

    <View
        android:layout_width="1dp"
        android:layout_height="match_parent"
        android:layout_alignParentLeft="true"
        android:background="#000"/>

</RelativeLayout>

下面是修改后的java代码:

package com.example.ui_test;

import android.annotation.SuppressLint;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;

import androidx.annotation.NonNull;
import androidx.annotation.Nullable;
import androidx.fragment.app.Fragment;


@SuppressLint("ValidFragment")
public class NewsContentFragment extends Fragment {
   private View view;

   @Nullable
   @Override
   public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
      view = inflater.inflate(R.layout.news_content_frag,container,false);
      return view;
   }

   public void refresh(String newsTitle,String newsContent){
      View visibilityLayout = view.findViewById(R.id.visibility_layout);
      visibilityLayout.setVisibility(View.VISIBLE);
      TextView newsTitleText = (TextView) view.findViewById(R.id.news_title);
      TextView newsContentText = (TextView) view.findViewById(R.id.news_content);
      newsTitleText.setText(newsTitle);
      newsContentText.setText(newsContent);
   }

}

仅仅是因为定义java类时没有写public,xml文件无需修改