Convert isReleaseApk to lazy value

Author: Isira-Seneviratne

app/src/main/java/org/schabi/newpipe/NewVersionWorker.kt

@@ -20,9 +20,7 @@ import com.grack.nanojson.JsonParser
 import com.grack.nanojson.JsonParserException
 import org.schabi.newpipe.extractor.downloader.Response
 import org.schabi.newpipe.extractor.exceptions.ReCaptchaException
-import org.schabi.newpipe.util.ReleaseVersionUtil.coerceUpdateCheckExpiry
-import org.schabi.newpipe.util.ReleaseVersionUtil.isLastUpdateCheckExpired
-import org.schabi.newpipe.util.ReleaseVersionUtil.isReleaseApk
+import org.schabi.newpipe.util.ReleaseVersionUtil
 import java.io.IOException
 
 class NewVersionWorker(
@@ -84,7 +82,7 @@ class NewVersionWorker(
     @Throws(IOException::class, ReCaptchaException::class)
     private fun checkNewVersion() {
         // Check if the current apk is a github one or not.
-        if (!isReleaseApk()) {
+        if (!ReleaseVersionUtil.isReleaseApk) {
             return
         }
 
@@ -93,7 +91,7 @@ class NewVersionWorker(
             // Check if the last request has happened a certain time ago
             // to reduce the number of API requests.
             val expiry = prefs.getLong(applicationContext.getString(R.string.update_expiry_key), 0)
-            if (!isLastUpdateCheckExpired(expiry)) {
+            if (!ReleaseVersionUtil.isLastUpdateCheckExpired(expiry)) {
                 return
             }
         }
@@ -108,7 +106,7 @@ class NewVersionWorker(
         try {
             // Store a timestamp which needs to be exceeded,
             // before a new request to the API is made.
-            val newExpiry = coerceUpdateCheckExpiry(response.getHeader("expires"))
+            val newExpiry = ReleaseVersionUtil.coerceUpdateCheckExpiry(response.getHeader("expires"))
             prefs.edit {
                 putLong(applicationContext.getString(R.string.update_expiry_key), newExpiry)
             }

app/src/main/java/org/schabi/newpipe/settings/MainSettingsFragment.java

@@ -23,7 +23,7 @@ public void onCreatePreferences(final Bundle savedInstanceState, final String ro
         setHasOptionsMenu(true); // Otherwise onCreateOptionsMenu is not called
 
         // Check if the app is updatable
-        if (!ReleaseVersionUtil.isReleaseApk()) {
+        if (!ReleaseVersionUtil.INSTANCE.isReleaseApk()) {
             getPreferenceScreen().removePreference(
                     findPreference(getString(R.string.update_pref_screen_key)));
 

app/src/main/java/org/schabi/newpipe/settings/SettingsActivity.java

@@ -266,7 +266,7 @@ private void initSearch(
      */
     private void ensureSearchRepresentsApplicationState() {
         // Check if the update settings are available
-        if (!ReleaseVersionUtil.isReleaseApk()) {
+        if (!ReleaseVersionUtil.INSTANCE.isReleaseApk()) {
             SettingsResourceRegistry.getInstance()
                     .getEntryByPreferencesResId(R.xml.update_settings)
                     .setSearchable(false);

app/src/main/java/org/schabi/newpipe/util/ReleaseVersionUtil.kt

@@ -15,14 +15,13 @@ object ReleaseVersionUtil {
     private const val RELEASE_CERT_PUBLIC_KEY_SHA256 =
         "cb84069bd68116bafae5ee4ee5b08a567aa6d898404e7cb12f9e756df5cf5cab"
 
-    @JvmStatic
-    fun isReleaseApk(): Boolean {
+    val isReleaseApk by lazy {
         @Suppress("NewApi")
         val certificates = mapOf(
             RELEASE_CERT_PUBLIC_KEY_SHA256.toByteArray() to PackageManager.CERT_INPUT_SHA256
         )
         val app = App.getApp()
-        return try {
+        try {
             PackageInfoCompat.hasSignatures(app.packageManager, app.packageName, certificates, false)
         } catch (e: PackageManager.NameNotFoundException) {
             createNotification(