Refactor: Port ignore battery optimizations (Android) (#1212)

* Port Android `Manifest.permission` and `Manifest.permission_group` (#1196)

* Port `Manifest.permission` and `Manifest.permission_group`

* Use Dart conventions for `Manifest` variables

* Implement `checkPermissionStatus`

* Change entry point of getting an `Activity`, implement `requestPermission`

* Expose `requestCode`

* Update tests

* Update main.dart

* Update CHANGELOG.md

* Elaborate on concern

* Replace `AndroidActivity` with `ActivityAware`

* Delete test

* Apply small fixes

* Elaborate on missing Android activity

* Regenerate pigeon files

* Make small adjustments based on review

* Update documentation

* Update documentation

* Implement `Settings` mirror

* Implement `Uri` mirror

* Add `Intent` constructor and update `Uri` implementation

* Implement `Intent` methods

* Implement `startActivity`, `getPackageName` for `Context`

* Copy new `Context` methods to `Activity`

* Implement `openAppSettings` in `PermissionHandlerAndroid`

* Follow-up changes

* Run `dart format .`

* Add `startActivityForResult`

* Add actions to `Settings`

* Update TODOs

* Run `dart format .`

* Implement `getSystemService`

* Add `Build`

* Implement `PowerManager`

* Fix bug with `PowerManager`, update `PermissionHandlerAndroid`

* Run `dart format .`

* Add sdk check to `isIgnoringBatteryOptimizations`

permission_handler_android/android/src/main/java/com/baseflow/permissionhandler/ActivityHostApiImpl.java

@@ -2,6 +2,7 @@
 
 import android.app.Activity;
 import android.content.Intent;
+import android.os.PowerManager;
 
 import androidx.annotation.NonNull;
 import androidx.annotation.Nullable;
@@ -53,6 +54,8 @@ public class ActivityHostApiImpl implements
 
     private final InstanceManager instanceManager;
 
+    private final PowerManagerFlutterApiImpl powerManagerFlutterApi;
+
     /**
      * Callbacks to complete a pending permission request.
      * <p>
@@ -62,7 +65,7 @@ public class ActivityHostApiImpl implements
     private final Map<Integer, Result<PermissionRequestResult>> pendingPermissionsRequestMap = new HashMap<>();
 
     /**
-     * Callback to complete a pending activity-for-result request.
+     * Callbacks to complete a pending activity-for-result request.
      * <p>
      * These callbacks are set in {@link this#startActivityForResult(String, String, Long, Result)},
      * and are completed in {@link this#onActivityResult(int, int, Intent)}.
@@ -76,9 +79,11 @@ public class ActivityHostApiImpl implements
      * @param instanceManager maintains instances stored to communicate with attached Dart objects
      */
     public ActivityHostApiImpl(
+        @NonNull PowerManagerFlutterApiImpl powerManagerFlutterApi,
         @NonNull BinaryMessenger binaryMessenger,
         @NonNull InstanceManager instanceManager
     ) {
+        this.powerManagerFlutterApi = powerManagerFlutterApi;
         this.binaryMessenger = binaryMessenger;
         this.instanceManager = instanceManager;
     }
@@ -219,4 +224,22 @@ public boolean onActivityResult(
 
         return true;
     }
+
+    @Override
+    @NonNull public String getSystemService(
+        @NonNull String instanceId,
+        @NonNull String name
+    ) {
+        final UUID instanceUuid = UUID.fromString(instanceId);
+        final Activity activity = instanceManager.getInstance(instanceUuid);
+
+        final Object systemService = activity.getSystemService(name);
+
+        if (systemService instanceof PowerManager) {
+            powerManagerFlutterApi.create((PowerManager) systemService);
+        }
+
+        final UUID systemServiceUuid = instanceManager.getIdentifierForStrongReference(systemService);
+        return systemServiceUuid.toString();
+    }
 }

permission_handler_android/android/src/main/java/com/baseflow/permissionhandler/BuildVersionHostApiImpl.java

@@ -0,0 +1,21 @@
+package com.baseflow.permissionhandler;
+
+import android.os.Build;
+
+import androidx.annotation.NonNull;
+
+import com.baseflow.permissionhandler.PermissionHandlerPigeon.BuildVersionHostApi;
+
+/**
+ * Host API implementation for `Build.VERSION`.
+ *
+ * <p>This class may handle instantiating and adding native object instances that are attached to a
+ * Dart instance or handle method calls on the associated native class or an instance of the class.
+ */
+public class BuildVersionHostApiImpl implements BuildVersionHostApi {
+    @NonNull
+    @Override
+    public Long sdkInt() {
+        return (long) Build.VERSION.SDK_INT;
+    }
+}

permission_handler_android/android/src/main/java/com/baseflow/permissionhandler/ContextHostApiImpl.java

@@ -2,6 +2,7 @@
 
 import android.content.Context;
 import android.content.Intent;
+import android.os.PowerManager;
 
 import androidx.annotation.NonNull;
 import androidx.core.content.ContextCompat;
@@ -26,16 +27,20 @@ public class ContextHostApiImpl implements ContextHostApi {
 
     private final InstanceManager instanceManager;
 
+    private final PowerManagerFlutterApiImpl powerManagerFlutterApi;
+
     /**
      * Constructs an {@link ContextHostApiImpl}.
      *
      * @param binaryMessenger used to communicate with Dart over asynchronous messages
      * @param instanceManager maintains instances stored to communicate with attached Dart objects
      */
     public ContextHostApiImpl(
+        @NonNull PowerManagerFlutterApiImpl powerManagerFlutterApi,
         @NonNull BinaryMessenger binaryMessenger,
         @NonNull InstanceManager instanceManager
     ) {
+        this.powerManagerFlutterApi = powerManagerFlutterApi;
         this.binaryMessenger = binaryMessenger;
         this.instanceManager = instanceManager;
     }
@@ -74,4 +79,22 @@ public void startActivity(
 
         return context.getPackageName();
     }
+
+    @Override
+    @NonNull public String getSystemService(
+        @NonNull String instanceId,
+        @NonNull String name
+    ) {
+        final UUID instanceUuid = UUID.fromString(instanceId);
+        final Context context = instanceManager.getInstance(instanceUuid);
+
+        final Object systemService = context.getSystemService(name);
+
+        if (systemService instanceof PowerManager) {
+            powerManagerFlutterApi.create((PowerManager) systemService);
+        }
+
+        final UUID systemServiceUuid = instanceManager.getIdentifierForStrongReference(systemService);
+        return systemServiceUuid.toString();
+    }
 }