treewide: use getSystemService extension everywhere

Signed-off-by: Harsh Shandilya <me@msfjarvis.dev>

app/src/main/java/com/zeapo/pwdstore/PasswordStore.kt

@@ -30,6 +30,7 @@ import androidx.appcompat.widget.SearchView.OnQueryTextListener
 import androidx.core.app.ActivityCompat
 import androidx.core.content.ContextCompat
 import androidx.core.content.edit
+import androidx.core.content.getSystemService
 import androidx.fragment.app.FragmentManager
 import androidx.lifecycle.ViewModelProvider
 import androidx.lifecycle.observe
@@ -102,7 +103,7 @@ class PasswordStore : AppCompatActivity() {
         activity = this
         settings = PreferenceManager.getDefaultSharedPreferences(this.applicationContext)
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N_MR1) {
-            shortcutManager = getSystemService(ShortcutManager::class.java)
+            shortcutManager = getSystemService()
         }
 
         // If user opens app with permission granted then revokes and returns,

app/src/main/java/com/zeapo/pwdstore/UserPreference.kt

@@ -578,7 +578,7 @@ class UserPreference : AppCompatActivity() {
 
     private val isAccessibilityServiceEnabled: Boolean
         get() {
-            val am = getSystemService(AccessibilityManager::class.java) ?: return false
+            val am = getSystemService<AccessibilityManager>() ?: return false
             val runningServices = am
                 .getEnabledAccessibilityServiceList(AccessibilityServiceInfo.FEEDBACK_GENERIC)
             return runningServices

app/src/main/java/com/zeapo/pwdstore/crypto/PgpActivity.kt

@@ -33,6 +33,7 @@ import android.widget.TextView
 import androidx.appcompat.app.AppCompatActivity
 import androidx.constraintlayout.widget.ConstraintLayout
 import androidx.core.content.edit
+import androidx.core.content.getSystemService
 import androidx.core.widget.doOnTextChanged
 import androidx.lifecycle.lifecycleScope
 import androidx.localbroadcastmanager.content.LocalBroadcastManager
@@ -73,9 +74,7 @@ import org.openintents.openpgp.OpenPgpError
 import timber.log.Timber
 
 class PgpActivity : AppCompatActivity(), OpenPgpServiceConnection.OnBound {
-    private val clipboard: ClipboardManager by lazy {
+    private val clipboard by lazy { getSystemService<ClipboardManager>() }
-        getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
-    }
     private var passwordEntry: PasswordEntry? = null
     private var api: OpenPgpApi? = null
 
@@ -140,6 +139,7 @@ class PgpActivity : AppCompatActivity(), OpenPgpServiceConnection.OnBound {
                 crypto_password_category_decrypt.text = relativeParentPath
                 crypto_password_file.text = name
                 crypto_password_file.setOnLongClickListener {
+                    val clipboard = clipboard ?: return@setOnLongClickListener false
                     val clip = ClipData.newPlainText("pgp_handler_result_pm", name)
                     clipboard.setPrimaryClip(clip)
                     showSnackbar(this.resources.getString(R.string.clipboard_username_toast_text))
@@ -808,6 +808,7 @@ class PgpActivity : AppCompatActivity(), OpenPgpServiceConnection.OnBound {
     }
 
     private fun copyPasswordToClipBoard() {
+        val clipboard = clipboard ?: return
         var pass = passwordEntry?.password
 
         if (findViewById<TextView>(R.id.crypto_password_show) == null) {
@@ -837,12 +838,14 @@ class PgpActivity : AppCompatActivity(), OpenPgpServiceConnection.OnBound {
     }
 
     private fun copyUsernameToClipBoard(username: String) {
+        val clipboard = clipboard ?: return
         val clip = ClipData.newPlainText("pgp_handler_result_pm", username)
         clipboard.setPrimaryClip(clip)
         showSnackbar(resources.getString(R.string.clipboard_username_toast_text))
     }
 
     private fun copyOtpToClipBoard(code: String) {
+        val clipboard = clipboard ?: return
         val clip = ClipData.newPlainText("pgp_handler_result_pm", code)
         clipboard.setPrimaryClip(clip)
         showSnackbar(resources.getString(R.string.clipboard_otp_toast_text))

app/src/main/java/com/zeapo/pwdstore/sshkeygen/ShowSshKeyFragment.kt

@@ -8,11 +8,11 @@ import android.annotation.SuppressLint
 import android.app.Dialog
 import android.content.ClipData
 import android.content.ClipboardManager
-import android.content.Context
 import android.os.Bundle
 import android.view.View
 import android.widget.TextView
 import androidx.appcompat.app.AlertDialog
+import androidx.core.content.getSystemService
 import androidx.fragment.app.DialogFragment
 import com.google.android.material.dialog.MaterialAlertDialogBuilder
 import com.zeapo.pwdstore.R
@@ -41,7 +41,7 @@ class ShowSshKeyFragment : DialogFragment() {
         ad.setOnShowListener {
             val b = ad.getButton(AlertDialog.BUTTON_NEUTRAL)
             b.setOnClickListener {
-                val clipboard = activity.getSystemService(Context.CLIPBOARD_SERVICE) as ClipboardManager
+                val clipboard = activity.getSystemService<ClipboardManager>() ?: return@setOnClickListener
                 val clip = ClipData.newPlainText("public key", publicKey.text.toString())
                 clipboard.setPrimaryClip(clip)
             }