perms prompt now doesn't show the back button - android

android/AndroidManifest.xml

@@ -18,6 +18,7 @@
         android:allowBackup="true"
         android:icon="@drawable/icon"
         android:label="@string/app_name"
+        android:theme="@android:style/Theme.Holo.Light.DarkActionBar"
         >
         <receiver android:name=".NetworkStateChangeReceiver">
             <intent-filter>

android/src/org/purplei2p/i2pd/I2PDPermsAskerActivity.java

@@ -124,6 +124,8 @@ public class I2PDPermsAskerActivity extends Activity {
                 ActivityCompat.requestPermissions(I2PDPermsAskerActivity.this,
                         new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
                         PERMISSION_WRITE_EXTERNAL_STORAGE);
+            } else {
+                finish(); //close the app
             }
         }
     }

android/src/org/purplei2p/i2pd/I2PDPermsExplanationActivity.java

@@ -1,5 +1,6 @@
 package org.purplei2p.i2pd;
 
+import android.app.ActionBar;
 import android.content.Intent;
 import android.os.Bundle;
 import android.app.Activity;
@@ -12,7 +13,8 @@ public class I2PDPermsExplanationActivity extends Activity {
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_perms_explanation);
-        //getActionBar().setDisplayHomeAsUpEnabled(true);
+        ActionBar actionBar = getActionBar();
+        if(actionBar!=null)actionBar.setHomeButtonEnabled(false);
         Button button_ok = (Button) findViewById(R.id.button_ok);
         button_ok.setOnClickListener(new View.OnClickListener() {
             @Override