Use coroutines in TaskEditActivity and UriHandler

app/src/main/java/com/todoroo/astrid/activity/TaskEditActivity.java

@@ -1,53 +0,0 @@
-package com.todoroo.astrid.activity;
-
-import com.todoroo.astrid.dao.TaskDaoBlocking;
-import com.todoroo.astrid.service.TaskCreator;
-import dagger.hilt.android.AndroidEntryPoint;
-import io.reactivex.Single;
-import io.reactivex.android.schedulers.AndroidSchedulers;
-import io.reactivex.disposables.CompositeDisposable;
-import io.reactivex.schedulers.Schedulers;
-import javax.inject.Inject;
-import org.tasks.injection.InjectingAppCompatActivity;
-import org.tasks.intents.TaskIntents;
-
-@AndroidEntryPoint
-public class TaskEditActivity extends InjectingAppCompatActivity {
-
-  private static final String TOKEN_ID = "id";
-
-  @Inject TaskCreator taskCreator;
-  @Inject TaskDaoBlocking taskDao;
-  private CompositeDisposable disposables;
-
-  @Override
-  protected void onResume() {
-    super.onResume();
-
-    long taskId = getIntent().getLongExtra(TOKEN_ID, 0);
-
-    disposables = new CompositeDisposable();
-
-    if (taskId == 0) {
-      startActivity(TaskIntents.getEditTaskIntent(this, taskCreator.createWithValues("")));
-      finish();
-    } else {
-      disposables.add(
-          Single.fromCallable(() -> taskDao.fetchBlocking(taskId))
-              .subscribeOn(Schedulers.io())
-              .observeOn(AndroidSchedulers.mainThread())
-              .subscribe(
-                  task -> {
-                    startActivity(TaskIntents.getEditTaskIntent(this, task));
-                    finish();
-                  }));
-    }
-  }
-
-  @Override
-  protected void onPause() {
-    super.onPause();
-
-    disposables.dispose();
-  }
-}

app/src/main/java/com/todoroo/astrid/activity/TaskEditActivity.kt

@@ -0,0 +1,38 @@
+package com.todoroo.astrid.activity
+
+import androidx.lifecycle.lifecycleScope
+import com.todoroo.astrid.dao.TaskDao
+import com.todoroo.astrid.service.TaskCreator
+import dagger.hilt.android.AndroidEntryPoint
+import kotlinx.coroutines.launch
+import org.tasks.injection.InjectingAppCompatActivity
+import org.tasks.intents.TaskIntents
+import javax.inject.Inject
+
+@AndroidEntryPoint
+class TaskEditActivity : InjectingAppCompatActivity() {
+    @Inject lateinit var taskCreator: TaskCreator
+    @Inject lateinit var taskDao: TaskDao
+
+    override fun onResume() {
+        super.onResume()
+
+        val taskId = intent.getLongExtra(TOKEN_ID, 0)
+        if (taskId > 0) {
+            lifecycleScope.launch {
+                val task = taskDao.fetch(taskId)
+                task?.let {
+                    startActivity(TaskIntents.getEditTaskIntent(this@TaskEditActivity, it))
+                }
+                finish()
+            }
+        } else {
+            startActivity(TaskIntents.getEditTaskIntent(this, taskCreator.createWithValues("")))
+            finish()
+        }
+    }
+
+    companion object {
+        private const val TOKEN_ID = "id"
+    }
+}

app/src/main/java/org/tasks/activities/UriHandler.kt

@@ -3,22 +3,20 @@ package org.tasks.activities
 import android.net.Uri
 import android.os.Bundle
 import androidx.appcompat.app.AppCompatActivity
-import com.todoroo.astrid.dao.TaskDaoBlocking
+import androidx.lifecycle.lifecycleScope
+import com.todoroo.astrid.dao.TaskDao
 import dagger.hilt.android.AndroidEntryPoint
-import io.reactivex.Single
-import io.reactivex.android.schedulers.AndroidSchedulers
-import io.reactivex.schedulers.Schedulers
+import kotlinx.coroutines.launch
 import org.tasks.intents.TaskIntents
 import org.tasks.provider.TasksContentProvider
 import org.tasks.provider.TasksContentProvider.Companion.URI_OPEN_TASK
 import timber.log.Timber
-import java.util.*
 import javax.inject.Inject
 
 @AndroidEntryPoint
 class UriHandler : AppCompatActivity() {
 
-    @Inject lateinit var taskDao: TaskDaoBlocking
+    @Inject lateinit var taskDao: TaskDao
 
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
@@ -27,15 +25,16 @@ class UriHandler : AppCompatActivity() {
             URI_OPEN_TASK -> {
                 val id = intent.data?.lastPathSegment?.toLongOrNull() ?: 0
                 if (id > 0) {
-                    Single.fromCallable { Optional.ofNullable(taskDao.fetchBlocking(id))}
-                            .subscribeOn(Schedulers.io())
-                            .observeOn(AndroidSchedulers.mainThread())
-                            .doAfterTerminate(this::finish)
-                            .subscribe(
-                                    { startActivity(TaskIntents.getEditTaskIntent(this, it.get())) },
-                                    Timber::e)
+                    lifecycleScope.launch {
+                        val task = taskDao.fetch(id)
+                        task?.let {
+                            startActivity(TaskIntents.getEditTaskIntent(this@UriHandler, it))
+                        }
+                        finish()
+                    }
                 } else {
                     startActivity(TaskIntents.getNewTaskIntent(this, null))
+                    finish()
                 }
             }
             else -> {