Replace deprecated org.apache.commons.lang3 methods with org.apache.commons.text methods

build.gradle

@@ -45,6 +45,7 @@ project.ext {
     supportVersion = "25.3.1"
     commonsioVersion = "2.5"
     commonslangVersion = "3.6"
+    commonstextVersion = "1.3"
     eventbusVersion = "2.4.0"
     flattr4jVersion = "2.14"
     glideVersion = "3.8.0"

core/build.gradle

@@ -50,6 +50,7 @@ dependencies {
     implementation "com.android.support:support-v4:$supportVersion"
     implementation "com.android.support:appcompat-v7:$supportVersion"
     implementation "org.apache.commons:commons-lang3:$commonslangVersion"
+    implementation "org.apache.commons:commons-text:$commonstextVersion"
     implementation ("org.shredzone.flattr4j:flattr4j-core:$flattr4jVersion") {
         exclude group: "org.json", module: "json"
     }

core/src/main/java/de/danoeh/antennapod/core/syndication/namespace/atom/AtomText.java

@@ -1,6 +1,6 @@
 package de.danoeh.antennapod.core.syndication.namespace.atom;
 
-import org.apache.commons.lang3.StringEscapeUtils;
+import org.apache.commons.text.StringEscapeUtils;
 
 import de.danoeh.antennapod.core.syndication.namespace.Namespace;
 import de.danoeh.antennapod.core.syndication.namespace.SyndElement;

core/src/main/java/de/danoeh/antennapod/core/util/FileNameGenerator.java

@@ -3,7 +3,8 @@ package de.danoeh.antennapod.core.util;
 import android.text.TextUtils;
 
 import org.apache.commons.lang3.ArrayUtils;
-import org.apache.commons.lang3.RandomStringUtils;
+import org.apache.commons.text.RandomStringGenerator;
+
 
 /** Generates valid filenames for a given string. */
 public class FileNameGenerator {
@@ -34,7 +35,11 @@ public class FileNameGenerator {
 		}
 		String filename = buf.toString().trim();
 		if(TextUtils.isEmpty(filename)) {
-			return RandomStringUtils.randomAlphanumeric(8);
+			return new RandomStringGenerator.Builder()
+					.withinRange('0', 'z')
+					.filteredBy(Character::isLetterOrDigit)
+					.build()
+                    .generate(8);
 		}
 		return filename;
 	}