Android android.os.FileUriExposedException: exposed beyond app through Intent.getData()錯誤

1、在AndroidManifest.xml中添加如下代碼

 <application
        android:name="com.rfid.application.MyApplication"
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:usesCleartextTraffic="true"
        android:theme="@android:style/Theme.NoTitleBar.Fullscreen">

      
        <provider
            android:name="androidx.core.content.FileProvider"
            android:authorities="com.rfid.application.MyApplication.provider"
            android:exported="false"
            android:grantUriPermissions="true">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/provider_paths"/>
        </provider>


    </application>

2、在res目錄下新建一個xml文件夾，並且新建一個provider_paths的xml文件

<?xml version="1.0" encoding="utf-8"?>
<paths xmlns:android="http://schemas.android.com/apk/res/android">
    <external-path name="external_files" path="."/>
</paths>

3、修改代碼

       File apkFile = new File(saveFileName); if (!apkFile.exists()) { return; } Intent intent = new Intent(Intent.ACTION_VIEW); if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N){
 intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); Uri contentUri = FileProvider.getUriForFile(mContext, "com.rfid.application.MyApplication.provider", apkFile); 
 intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION); intent.setDataAndType(contentUri, "application/vnd.android.package-archive");
 }else{ intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK); intent.setDataAndType(Uri.fromFile(apkFile), "application/vnd.android.package-archive"); } 
 mContext.startActivity(intent);