gistfile1.txt

<provider
            android:name="android.support.v4.content.FileProvider"
            android:authorities="${applicationId}.provider"
            android:exported="false"
            android:grantUriPermissions="true">
            <meta-data
                android:name="android.support.FILE_PROVIDER_PATHS"
                android:resource="@xml/provider_paths"/>
        </provider>

gistfile2.txt

public void take(){
            storage =1;
            Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            file = new File(Environment.getExternalStorageDirectory(),
                    String.valueOf(System.currentTimeMillis()) + ".jpg");
            //fileUri = Uri.fromFile(file);
            fileUri = FileProvider.getUriForFile(this, BuildConfig.APPLICATION_ID + ".provider", file);
            takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
            if (takePictureIntent.resolveActivity(getPackageManager()) != null) {
                startActivityForResult(takePictureIntent, 1);
            }
    }

provider_paths.xml

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