[SOLVED]Error at Taking picture with intents(Need Serious Help)

Android Programming (3rd Edition) 16. Taking Pictures with Intents
1

Code:
mPhotoButton.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { Uri uri = FileProvider.getUriForFile(getActivity(), "com.lite_industries.samm.criminalintent.fileprovider", mPhotoFile); captureImage.putExtra(MediaStore.EXTRA_OUTPUT, uri); List<ResolveInfo> cameraActivities = getActivity() .getPackageManager().queryIntentActivities(captureImage, PackageManager.MATCH_DEFAULT_ONLY); for (ResolveInfo activity : cameraActivities) { getActivity().grantUriPermission(activity.activityInfo.packageName, uri, Intent.FLAG_GRANT_WRITE_URI_PERMISSION); } startActivityForResult(captureImage, REQUEST_PHOTO); } });
Android Manifest:
<provider android:authorities="com.lite_industries.sam.criminalintent.CrimeFragment.FileProvider" android:name="android.support.v4.content.FileProvider" android:exported="false" android:grantUriPermissions="true"> <meta-data android:name="android.support.FILE_PROVIDER_PATHS" android:resource="@xml/files"/> </provider>
XML:(files.xml)
<?xml version="1.0" encoding="utf-8"?> <paths> <files-path name="crime_photos" path="."/> </paths>
This is the error I get after I did everything(help needed)
StackTrace:

01-21 13:52:30.758 17431-17431/com.lite_industries.sam.criminalintent E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.lite_industries.sam.criminalintent, PID: 17431
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
at android.support.v4.content.FileProvider.parsePathStrategy(FileProvider.java:591)
at android.support.v4.content.FileProvider.getPathStrategy(FileProvider.java:565)
at android.support.v4.content.FileProvider.getUriForFile(FileProvider.java:403)
at com.lite_industries.sam.criminalintent.CrimeFragment$6.onClick(CrimeFragment.java:144)
at android.view.View.performClick(View.java:5657)
at android.view.View$PerformClick.run(View.java:22453)
at android.os.Handler.handleCallback(Handler.java:751)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6236)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:891)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:781)

2

Please check the authority value in the following two parts.
They are different in your code.


Uri uri = FileProvider.getUriForFile(getActivity(), 
"com.lite_industries.samm.criminalintent.fileprovider", mPhotoFile); 

<provider 
    android:authorities="com.lite_industries.sam.criminalintent.CrimeFragment.FileProvider" 
    android:name="android.support.v4.content.FileProvider" 
    android:exported="false" 
    android:grantUriPermissions="true">
    <meta-data 
        android:name="android.support.FILE_PROVIDER_PATHS" 
        android:resource="@xml/files"/> 
</provider>
3

Okay the “sam” alone should be changed or the whole authority value should be same???

4

According to the reference, they should be exactly same.
Please check the “Generating the Content URI for a File” part.

https://developer.android.com/reference/android/support/v4/content/FileProvider.html#GetUri

1 Like
5

Thanks for the reply. That saved.