Do not record last leave time if app not unlocked, And Fix #275

app/src/main/java/com/hippo/ehviewer/EhApplication.java

@@ -592,6 +592,8 @@ public class EhApplication extends SceneApplication {
     static class EhlifecycleObserver implements DefaultLifecycleObserver {
         @Override
         public void onPause(@NonNull LifecycleOwner owner) {
+            if (!locked)
+                locked_last_leave_time = System.currentTimeMillis() / 1000;
             locked = true;
         }
     }

app/src/main/java/com/hippo/ehviewer/ui/EhActivity.kt

@@ -118,11 +118,6 @@ abstract class EhActivity : AppCompatActivity() {
         }
     }
 
-    override fun onPause() {
-        super.onPause()
-        locked_last_leave_time = System.currentTimeMillis() / 1000
-    }
-
     private val requestPermissionLauncher = registerForActivityResult(
         ActivityResultContracts.RequestPermission()
     ) {

app/src/main/java/com/hippo/ehviewer/ui/SecurityActivity.kt

@@ -32,8 +32,8 @@ import com.hippo.ehviewer.EhApplication
 import com.hippo.ehviewer.R
 
 class SecurityActivity : AppCompatActivity() {
-    override fun onCreate(savedInstanceState: Bundle?) {
-        super.onCreate(savedInstanceState)
+    override fun onResume() {
+        super.onResume()
         if (isAuthenticationSupported(this))
             startAuthentication(getString(R.string.settings_privacy_require_unlock))
         else