FileProvider failing to parse XML












0















I am trying to use a FileProvider but it is failing to parse the XML and throwing this error:




java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.XmlResourceParser android.content.pm.ProviderInfo.loadXmlMetaData(android.content.pm.PackageManager, java.lang.String)' on a null object reference




This is the calling code:



            Log.i(TAG, "Completed download of update file");
statusMessage = "Completed download of update file";

Uri uri;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
if (context != null) {
Log.i(TAG, "Context is: " + context.toString());
} else {
Log.w(TAG, "Context is null");
}
if (context.getString(R.string.file_provider_authority) != null) {
Log.i(TAG, "Authority is: " + context.getString(R.string.file_provider_authority));
} else {
Log.w(TAG, "Authority is null");
}
if (outputFile != null) {
Log.i(TAG, "outputFile is: " + outputFile.toString());
} else {
Log.w(TAG, "outputFile is null");
}
uri = FileProvider.getUriForFile(context, context.getString(R.string.file_provider_authority), outputFile);
statusMessage = "uri set";
} else {
uri = Uri.fromFile(outputFile);
}

Log.i(TAG, "URI successfully set");
statusMessage = "URI successfully set";


None of the parameters are null and "URI successfully set" is never logged. So it seems to me that the problem lies in the XML files.



AndroidManifest.xml



<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="uk.co.letsdelight.letsdelight">

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
<uses-permission android:name="android.permission.REQUEST_WRITE_PERMISSION" />

<!-- To auto-complete the email text field in the login form with the user's emails -->
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.READ_PROFILE" />
<uses-permission android:name="android.permission.READ_CONTACTS" />

<application
android:allowBackup="true"
android:icon="@drawable/icon_trans"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme"
tools:ignore="GoogleAppIndexingWarning">

<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="@strings/file_provider_authority"
android:exported="false"
android:grantUriPermissions="true"
tools:replace="android:authorities">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/file_provider_paths" />
</provider>

<activity
android:name=".MainActivity"
android:label="@string/app_name"
android:theme="@style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.SEND" />

<category android:name="android.intent.category.DEFAULT" />

<data android:mimeType="text/plain" />
</intent-filter>
</activity>
<activity android:name=".AboutActivity" />
<activity
android:name=".LoginActivity"
android:label="@string/title_activity_login"
android:parentActivityName=".MainActivity">
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="uk.co.letsdelight.letsdelight.MainActivity" />
</activity>
</application>

</manifest>


file_provider_paths.xml



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


Any ideas about what I can try to resolve this issue please?










share|improve this question


















  • 1





    That Exception can happen when you call FileProvider.getUriForFile() with an authority that doesn't match the value in the manifest. Your value there looks suspect – @strings/file_provider_authority. Why is strings plural? Normally, it's @string. Do you somehow have two different file_provider_authority values? Are you getting an error or warning on that line?

    – Mike M.
    Nov 22 '18 at 22:18











  • Changing from strings to string has solved the problem - many thanks. But why is it singular when the XML file is res/values/strings.xml which is plural?

    – İan Boddison
    Nov 22 '18 at 23:13






  • 1





    I explain that in my answer here. It's specifically about attr resources, but it's the same for string resources, as well. I'm kinda surprised that built successfully, actually, but I suppose you can do all sorts of odd stuff with Gradle.

    – Mike M.
    Nov 22 '18 at 23:31
















0















I am trying to use a FileProvider but it is failing to parse the XML and throwing this error:




java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.XmlResourceParser android.content.pm.ProviderInfo.loadXmlMetaData(android.content.pm.PackageManager, java.lang.String)' on a null object reference




This is the calling code:



            Log.i(TAG, "Completed download of update file");
statusMessage = "Completed download of update file";

Uri uri;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
if (context != null) {
Log.i(TAG, "Context is: " + context.toString());
} else {
Log.w(TAG, "Context is null");
}
if (context.getString(R.string.file_provider_authority) != null) {
Log.i(TAG, "Authority is: " + context.getString(R.string.file_provider_authority));
} else {
Log.w(TAG, "Authority is null");
}
if (outputFile != null) {
Log.i(TAG, "outputFile is: " + outputFile.toString());
} else {
Log.w(TAG, "outputFile is null");
}
uri = FileProvider.getUriForFile(context, context.getString(R.string.file_provider_authority), outputFile);
statusMessage = "uri set";
} else {
uri = Uri.fromFile(outputFile);
}

Log.i(TAG, "URI successfully set");
statusMessage = "URI successfully set";


None of the parameters are null and "URI successfully set" is never logged. So it seems to me that the problem lies in the XML files.



AndroidManifest.xml



<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="uk.co.letsdelight.letsdelight">

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
<uses-permission android:name="android.permission.REQUEST_WRITE_PERMISSION" />

<!-- To auto-complete the email text field in the login form with the user's emails -->
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.READ_PROFILE" />
<uses-permission android:name="android.permission.READ_CONTACTS" />

<application
android:allowBackup="true"
android:icon="@drawable/icon_trans"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme"
tools:ignore="GoogleAppIndexingWarning">

<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="@strings/file_provider_authority"
android:exported="false"
android:grantUriPermissions="true"
tools:replace="android:authorities">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/file_provider_paths" />
</provider>

<activity
android:name=".MainActivity"
android:label="@string/app_name"
android:theme="@style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.SEND" />

<category android:name="android.intent.category.DEFAULT" />

<data android:mimeType="text/plain" />
</intent-filter>
</activity>
<activity android:name=".AboutActivity" />
<activity
android:name=".LoginActivity"
android:label="@string/title_activity_login"
android:parentActivityName=".MainActivity">
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="uk.co.letsdelight.letsdelight.MainActivity" />
</activity>
</application>

</manifest>


file_provider_paths.xml



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


Any ideas about what I can try to resolve this issue please?










share|improve this question


















  • 1





    That Exception can happen when you call FileProvider.getUriForFile() with an authority that doesn't match the value in the manifest. Your value there looks suspect – @strings/file_provider_authority. Why is strings plural? Normally, it's @string. Do you somehow have two different file_provider_authority values? Are you getting an error or warning on that line?

    – Mike M.
    Nov 22 '18 at 22:18











  • Changing from strings to string has solved the problem - many thanks. But why is it singular when the XML file is res/values/strings.xml which is plural?

    – İan Boddison
    Nov 22 '18 at 23:13






  • 1





    I explain that in my answer here. It's specifically about attr resources, but it's the same for string resources, as well. I'm kinda surprised that built successfully, actually, but I suppose you can do all sorts of odd stuff with Gradle.

    – Mike M.
    Nov 22 '18 at 23:31














0












0








0








I am trying to use a FileProvider but it is failing to parse the XML and throwing this error:




java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.XmlResourceParser android.content.pm.ProviderInfo.loadXmlMetaData(android.content.pm.PackageManager, java.lang.String)' on a null object reference




This is the calling code:



            Log.i(TAG, "Completed download of update file");
statusMessage = "Completed download of update file";

Uri uri;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
if (context != null) {
Log.i(TAG, "Context is: " + context.toString());
} else {
Log.w(TAG, "Context is null");
}
if (context.getString(R.string.file_provider_authority) != null) {
Log.i(TAG, "Authority is: " + context.getString(R.string.file_provider_authority));
} else {
Log.w(TAG, "Authority is null");
}
if (outputFile != null) {
Log.i(TAG, "outputFile is: " + outputFile.toString());
} else {
Log.w(TAG, "outputFile is null");
}
uri = FileProvider.getUriForFile(context, context.getString(R.string.file_provider_authority), outputFile);
statusMessage = "uri set";
} else {
uri = Uri.fromFile(outputFile);
}

Log.i(TAG, "URI successfully set");
statusMessage = "URI successfully set";


None of the parameters are null and "URI successfully set" is never logged. So it seems to me that the problem lies in the XML files.



AndroidManifest.xml



<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="uk.co.letsdelight.letsdelight">

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
<uses-permission android:name="android.permission.REQUEST_WRITE_PERMISSION" />

<!-- To auto-complete the email text field in the login form with the user's emails -->
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.READ_PROFILE" />
<uses-permission android:name="android.permission.READ_CONTACTS" />

<application
android:allowBackup="true"
android:icon="@drawable/icon_trans"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme"
tools:ignore="GoogleAppIndexingWarning">

<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="@strings/file_provider_authority"
android:exported="false"
android:grantUriPermissions="true"
tools:replace="android:authorities">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/file_provider_paths" />
</provider>

<activity
android:name=".MainActivity"
android:label="@string/app_name"
android:theme="@style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.SEND" />

<category android:name="android.intent.category.DEFAULT" />

<data android:mimeType="text/plain" />
</intent-filter>
</activity>
<activity android:name=".AboutActivity" />
<activity
android:name=".LoginActivity"
android:label="@string/title_activity_login"
android:parentActivityName=".MainActivity">
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="uk.co.letsdelight.letsdelight.MainActivity" />
</activity>
</application>

</manifest>


file_provider_paths.xml



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


Any ideas about what I can try to resolve this issue please?










share|improve this question














I am trying to use a FileProvider but it is failing to parse the XML and throwing this error:




java.lang.NullPointerException: Attempt to invoke virtual method 'android.content.res.XmlResourceParser android.content.pm.ProviderInfo.loadXmlMetaData(android.content.pm.PackageManager, java.lang.String)' on a null object reference




This is the calling code:



            Log.i(TAG, "Completed download of update file");
statusMessage = "Completed download of update file";

Uri uri;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
if (context != null) {
Log.i(TAG, "Context is: " + context.toString());
} else {
Log.w(TAG, "Context is null");
}
if (context.getString(R.string.file_provider_authority) != null) {
Log.i(TAG, "Authority is: " + context.getString(R.string.file_provider_authority));
} else {
Log.w(TAG, "Authority is null");
}
if (outputFile != null) {
Log.i(TAG, "outputFile is: " + outputFile.toString());
} else {
Log.w(TAG, "outputFile is null");
}
uri = FileProvider.getUriForFile(context, context.getString(R.string.file_provider_authority), outputFile);
statusMessage = "uri set";
} else {
uri = Uri.fromFile(outputFile);
}

Log.i(TAG, "URI successfully set");
statusMessage = "URI successfully set";


None of the parameters are null and "URI successfully set" is never logged. So it seems to me that the problem lies in the XML files.



AndroidManifest.xml



<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="uk.co.letsdelight.letsdelight">

<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
<uses-permission android:name="android.permission.REQUEST_WRITE_PERMISSION" />

<!-- To auto-complete the email text field in the login form with the user's emails -->
<uses-permission android:name="android.permission.GET_ACCOUNTS" />
<uses-permission android:name="android.permission.READ_PROFILE" />
<uses-permission android:name="android.permission.READ_CONTACTS" />

<application
android:allowBackup="true"
android:icon="@drawable/icon_trans"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme"
tools:ignore="GoogleAppIndexingWarning">

<provider
android:name="android.support.v4.content.FileProvider"
android:authorities="@strings/file_provider_authority"
android:exported="false"
android:grantUriPermissions="true"
tools:replace="android:authorities">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/file_provider_paths" />
</provider>

<activity
android:name=".MainActivity"
android:label="@string/app_name"
android:theme="@style/AppTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />

<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
<intent-filter>
<action android:name="android.intent.action.SEND" />

<category android:name="android.intent.category.DEFAULT" />

<data android:mimeType="text/plain" />
</intent-filter>
</activity>
<activity android:name=".AboutActivity" />
<activity
android:name=".LoginActivity"
android:label="@string/title_activity_login"
android:parentActivityName=".MainActivity">
<meta-data
android:name="android.support.PARENT_ACTIVITY"
android:value="uk.co.letsdelight.letsdelight.MainActivity" />
</activity>
</application>

</manifest>


file_provider_paths.xml



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


Any ideas about what I can try to resolve this issue please?







java android android-fileprovider






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Nov 22 '18 at 22:00









İan Boddisonİan Boddison

478




478








  • 1





    That Exception can happen when you call FileProvider.getUriForFile() with an authority that doesn't match the value in the manifest. Your value there looks suspect – @strings/file_provider_authority. Why is strings plural? Normally, it's @string. Do you somehow have two different file_provider_authority values? Are you getting an error or warning on that line?

    – Mike M.
    Nov 22 '18 at 22:18











  • Changing from strings to string has solved the problem - many thanks. But why is it singular when the XML file is res/values/strings.xml which is plural?

    – İan Boddison
    Nov 22 '18 at 23:13






  • 1





    I explain that in my answer here. It's specifically about attr resources, but it's the same for string resources, as well. I'm kinda surprised that built successfully, actually, but I suppose you can do all sorts of odd stuff with Gradle.

    – Mike M.
    Nov 22 '18 at 23:31














  • 1





    That Exception can happen when you call FileProvider.getUriForFile() with an authority that doesn't match the value in the manifest. Your value there looks suspect – @strings/file_provider_authority. Why is strings plural? Normally, it's @string. Do you somehow have two different file_provider_authority values? Are you getting an error or warning on that line?

    – Mike M.
    Nov 22 '18 at 22:18











  • Changing from strings to string has solved the problem - many thanks. But why is it singular when the XML file is res/values/strings.xml which is plural?

    – İan Boddison
    Nov 22 '18 at 23:13






  • 1





    I explain that in my answer here. It's specifically about attr resources, but it's the same for string resources, as well. I'm kinda surprised that built successfully, actually, but I suppose you can do all sorts of odd stuff with Gradle.

    – Mike M.
    Nov 22 '18 at 23:31








1




1





That Exception can happen when you call FileProvider.getUriForFile() with an authority that doesn't match the value in the manifest. Your value there looks suspect – @strings/file_provider_authority. Why is strings plural? Normally, it's @string. Do you somehow have two different file_provider_authority values? Are you getting an error or warning on that line?

– Mike M.
Nov 22 '18 at 22:18





That Exception can happen when you call FileProvider.getUriForFile() with an authority that doesn't match the value in the manifest. Your value there looks suspect – @strings/file_provider_authority. Why is strings plural? Normally, it's @string. Do you somehow have two different file_provider_authority values? Are you getting an error or warning on that line?

– Mike M.
Nov 22 '18 at 22:18













Changing from strings to string has solved the problem - many thanks. But why is it singular when the XML file is res/values/strings.xml which is plural?

– İan Boddison
Nov 22 '18 at 23:13





Changing from strings to string has solved the problem - many thanks. But why is it singular when the XML file is res/values/strings.xml which is plural?

– İan Boddison
Nov 22 '18 at 23:13




1




1





I explain that in my answer here. It's specifically about attr resources, but it's the same for string resources, as well. I'm kinda surprised that built successfully, actually, but I suppose you can do all sorts of odd stuff with Gradle.

– Mike M.
Nov 22 '18 at 23:31





I explain that in my answer here. It's specifically about attr resources, but it's the same for string resources, as well. I'm kinda surprised that built successfully, actually, but I suppose you can do all sorts of odd stuff with Gradle.

– Mike M.
Nov 22 '18 at 23:31












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