Myujth

I have a button that should open a image file on the device. It works fine below API 24 but crashes on API 24 and above. I followed that tutorial for API 24+ but it still crashes and I don't know why.

Intent intent = new Intent(Intent.ACTION_VIEW);
if(android.os.Build.VERSION.SDK_INT >=24) 
 fileURI = FileProvider.getUriForFile(context,
 "com.example.android.provider",
 localFile);
 intent.setDataAndType(fileURI, "image/jpeg");
 else 
 intent.setDataAndType(Uri.fromFile(localFile), "image/jpeg");

intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK|Intent.FLAG_GRANT_READ_URI_PERMISSION);
context.startActivity(intent);

Manifest file:

<provider
 android:name="android.support.v4.content.FileProvider"
 android:authorities="com.example.android.fileprovider"
 android:exported="false"
 android:grantUriPermissions="true">
 <meta-data
 android:name="android.support.FILE_PROVIDER_PATHS"
 android:resource="@xml/file_paths2"/>
</provider>

file_paths2.xml:

<paths xmlns:android="http://schemas.android.com/apk/res/android">
 <external-path name="external_files" path="."/>
</paths>

I don't have any clue.

Log:

11-10 19:59:08.052 21800-21800/com.yannick.mychatapp E/AndroidRuntime: FATAL EXCEPTION: main
Process: com.yannick.mychatapp, PID: 21800
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:605)
 at android.support.v4.content.FileProvider.getPathStrategy(FileProvider.java:579)
 at android.support.v4.content.FileProvider.getUriForFile(FileProvider.java:417)
 at com.yannick.mychatapp.ChatRoom$17$1.onClick(ChatRoom.java:936)
 at android.support.design.widget.Snackbar$1.onClick(Snackbar.java:317)
 at android.view.View.performClick(View.java:6597)
 at android.view.View.performClickInternal(View.java:6574)
 at android.view.View.access$3100(View.java:778)
 at android.view.View$PerformClick.run(View.java:25885)
 at android.os.Handler.handleCallback(Handler.java:873)
 at android.os.Handler.dispatchMessage(Handler.java:99)
 at android.os.Looper.loop(Looper.java:193)
 at android.app.ActivityThread.main(ActivityThread.java:6669)
 at java.lang.reflect.Method.invoke(Native Method)
 at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)

fileURI = FileProvider.getUriForFile(context,
 "com.example.android.provider",
 localFile);

Here, you use com.example.android.provider.

<provider
 android:name="android.support.v4.content.FileProvider"
 android:authorities="com.example.android.fileprovider"
 android:exported="false"
 android:grantUriPermissions="true">
 <meta-data
 android:name="android.support.FILE_PROVIDER_PATHS"
 android:resource="@xml/file_paths2"/>
</provider>

Here, you use com.example.android.fileprovider.

These are not the same. They need to be the same. And, they need to be something specific for your app. Use something based on your own app's package name, and use the same value in both places.