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We also recommend that a + file or class name and description of purpose be included on the + same "printed page" as the copyright notice for easier + identification within third-party archives. + + Copyright {yyyy} {name of copyright owner} + + Licensed under the Apache License, Version 2.0 (the "License"); + you may not use this file except in compliance with the License. + You may obtain a copy of the License at + + http://www.apache.org/licenses/LICENSE-2.0 + + Unless required by applicable law or agreed to in writing, software + distributed under the License is distributed on an "AS IS" BASIS, + WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + See the License for the specific language governing permissions and + limitations under the License. diff --git a/app/.gitignore b/app/.gitignore new file mode 100644 index 0000000..796b96d --- /dev/null +++ b/app/.gitignore @@ -0,0 +1 @@ +/build diff --git a/app/build.gradle b/app/build.gradle new file mode 100644 index 0000000..7458f83 --- /dev/null +++ b/app/build.gradle @@ -0,0 +1,32 @@ +apply plugin: 'com.android.application' + +android { + compileSdkVersion 25 + buildToolsVersion "25.0.3" + defaultConfig { + applicationId "touchin.aacplusdbtest" + minSdkVersion 16 + targetSdkVersion 25 + versionCode 1 + versionName "1.0" + } + + buildTypes { + release { + minifyEnabled false + } + } + + dataBinding { + enabled = true + } +} + +dependencies { + + compile 'com.android.support:appcompat-v7:25.3.1' + + compile "android.arch.lifecycle:runtime:1.0.0-alpha3" + compile "android.arch.lifecycle:extensions:1.0.0-alpha3" + annotationProcessor "android.arch.lifecycle:compiler:1.0.0-alpha3" +} diff --git a/app/src/main/AndroidManifest.xml b/app/src/main/AndroidManifest.xml new file mode 100644 index 0000000..579d00b --- /dev/null +++ b/app/src/main/AndroidManifest.xml @@ -0,0 +1,20 @@ + + + + + + + + + + + + + \ No newline at end of file diff --git a/app/src/main/java/touchin/aacplusdbtest/AacPlusDbTestApp.java b/app/src/main/java/touchin/aacplusdbtest/AacPlusDbTestApp.java new file mode 100644 index 0000000..c303c1d --- /dev/null +++ b/app/src/main/java/touchin/aacplusdbtest/AacPlusDbTestApp.java @@ -0,0 +1,35 @@ +/* + * Copyright (c) 2017 Touch Instinct + * + * This file is sample project file. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ +package touchin.aacplusdbtest; + +import android.app.Application; + +public class AacPlusDbTestApp extends Application { + private ProfileRepository profileRepository; + + public ProfileRepository getProfileRepository() { + return profileRepository; + } + + @Override + public void onCreate() { + super.onCreate(); + profileRepository = new ProfileRepository(this); + } +} diff --git a/app/src/main/java/touchin/aacplusdbtest/ProfileActivity.java b/app/src/main/java/touchin/aacplusdbtest/ProfileActivity.java new file mode 100644 index 0000000..65500a7 --- /dev/null +++ b/app/src/main/java/touchin/aacplusdbtest/ProfileActivity.java @@ -0,0 +1,50 @@ +/* + * Copyright (c) 2017 Touch Instinct + * + * This file is sample project file. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ +package touchin.aacplusdbtest; + +import android.arch.lifecycle.LifecycleActivity; +import android.arch.lifecycle.ViewModelProviders; +import android.databinding.DataBindingUtil; +import android.os.Bundle; + +import touchin.aacplusdbtest.databinding.ActivityProfileBinding; + +// наследуем от LifecycleActivity, так как это может понадобиться для LiveData. +// LiveData будет активироваться, когда эта активити будет в состоянии started. +public class ProfileActivity extends LifecycleActivity { + private ActivityProfileBinding binding; + + @Override + protected void onCreate(Bundle savedInstanceState) { + super.onCreate(savedInstanceState); + // инициализируем байндинг + binding = DataBindingUtil.setContentView(this, R.layout.activity_profile); + // устанавливаем ViewModel для байндинга + ProfileViewModel profileViewModel = ViewModelProviders.of(this).get(ProfileViewModel.class); + binding.setProfileViewModel(profileViewModel); + } + + @Override + protected void onDestroy() { + super.onDestroy(); + binding.setProfileViewModel(null); + binding.executePendingBindings(); + } + +} \ No newline at end of file diff --git a/app/src/main/java/touchin/aacplusdbtest/ProfileRepository.java b/app/src/main/java/touchin/aacplusdbtest/ProfileRepository.java new file mode 100644 index 0000000..1e585f5 --- /dev/null +++ b/app/src/main/java/touchin/aacplusdbtest/ProfileRepository.java @@ -0,0 +1,82 @@ +/* + * Copyright (c) 2017 Touch Instinct + * + * This file is sample project file. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ +package touchin.aacplusdbtest; + + +import android.arch.lifecycle.LiveData; +import android.content.Context; +import android.content.SharedPreferences; + +import java.util.ArrayList; +import java.util.List; + +public class ProfileRepository { + private SharedPreferences preferences; + // подписчики на обновление авторизованного пользователя + private List updateListeners = new ArrayList<>(); + + public ProfileRepository(Context context) { + preferences = context.getSharedPreferences("prefs", Context.MODE_PRIVATE); + } + + public void login(String login) { + preferences.edit().putString("login", login).apply(); + for (UserUpdateListener listener : updateListeners) { + listener.update(login); + } + } + + public void logout() { + preferences.edit().putString("login", null).apply(); + for (UserUpdateListener listener : updateListeners) { + listener.update(null); + } + } + + private interface UserUpdateListener { + void update(String login); + } + + // возвращает LiveData для отслеживание текущего авторизованного пользователя + public LiveData getLoggedInUser() { return new LoginLiveData(); } + + private class LoginLiveData extends LiveData implements UserUpdateListener { + + @Override + // postValue запрашивает обновление на UI-потоке + // используем, так как мы не уверены, с какого потока будет обновлен логин + // для немедленного обновления на UI-потоке можно использовать метод setValue + public void update(String login) { postValue(login); } + + @Override + // этот метод вызовется, когда на LiveData будет хоть один подписчик, + // а также объект жизненного цикла этого подписчика будет в состоянии started + protected void onActive() { + super.onActive(); + updateListeners.add(this); + update(preferences.getString("login", null)); + } + + @Override + protected void onInactive() { + super.onInactive(); + updateListeners.remove(this); + } + } +} diff --git a/app/src/main/java/touchin/aacplusdbtest/ProfileViewModel.java b/app/src/main/java/touchin/aacplusdbtest/ProfileViewModel.java new file mode 100644 index 0000000..e550bcd --- /dev/null +++ b/app/src/main/java/touchin/aacplusdbtest/ProfileViewModel.java @@ -0,0 +1,61 @@ +/* + * Copyright (c) 2017 Touch Instinct + * + * This file is sample project file. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ +package touchin.aacplusdbtest; + + +import android.app.Application; +import android.arch.core.util.Function; +import android.arch.lifecycle.AndroidViewModel; +import android.arch.lifecycle.LiveData; +import android.arch.lifecycle.Transformations; +import android.databinding.ObservableField; + +import touchin.aacplusdbtest.utils.LifecycleLiveDataField; +import touchin.aacplusdbtest.utils.TextField; + +public class ProfileViewModel extends AndroidViewModel { + private ProfileRepository profileRepository; + + // представляет логин авторизованного пользователя или null + public final ObservableField userLogin; + // представляет авторизован ли пользователь + public final ObservableField isUserLoggedIn; + // представляет логин, введенный пользователем с клавиатуры + public final TextField inputLogin = new TextField(); + + public ProfileViewModel(Application application) { + super(application); + profileRepository = ((AacPlusDbTestApp) application).getProfileRepository(); + LiveData loggedInUserLiveData = profileRepository.getLoggedInUser(); + userLogin = new LifecycleLiveDataField<>(loggedInUserLiveData); + isUserLoggedIn = new LifecycleLiveDataField<>(Transformations.map(loggedInUserLiveData, + new Function() { + public Boolean apply(String login) { return login!= null; } + })); + } + + public void login() { + // используем введенный пользователем логин + if (inputLogin.get() != null) { + profileRepository.login(inputLogin.get()); + } + } + + public void logout() { profileRepository.logout(); } +} \ No newline at end of file diff --git a/app/src/main/java/touchin/aacplusdbtest/utils/LifecycleLiveDataField.java b/app/src/main/java/touchin/aacplusdbtest/utils/LifecycleLiveDataField.java new file mode 100644 index 0000000..f700c57 --- /dev/null +++ b/app/src/main/java/touchin/aacplusdbtest/utils/LifecycleLiveDataField.java @@ -0,0 +1,72 @@ +/* + * Copyright (c) 2017 Touch Instinct + * + * This file is sample project file. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ +package touchin.aacplusdbtest.utils; + + +import android.arch.lifecycle.LifecycleActivity; +import android.arch.lifecycle.LiveData; +import android.arch.lifecycle.Observer; +import android.databinding.ObservableField; +import android.databinding.ViewDataBinding; +import android.util.Log; + +import java.lang.ref.WeakReference; +import java.lang.reflect.Field; + +// наследуем от ObservableField +public class LifecycleLiveDataField extends ObservableField { + private LiveData source; + // отслеживаем количество подписчиков на этот ObservableField + private int observersCount; + // Observer — класс из библиотеки Android Architecture Components + // подписчик LiveData — прокидывает значения из LiveData в ObservableField + private Observer observer = new Observer() { + public void onChanged(T value) { LifecycleLiveDataField.this.set(value); } + }; + + public LifecycleLiveDataField(LiveData source) { this.source = source; } + + @Override + public void addOnPropertyChangedCallback(OnPropertyChangedCallback callback) { + super.addOnPropertyChangedCallback(callback); + try { + Field callbackListenerField = callback.getClass().getDeclaredField("mListener"); + callbackListenerField.setAccessible(true); + WeakReference callbackListener = (WeakReference) callbackListenerField.get(callback); + LifecycleActivity activity = (LifecycleActivity) callbackListener.get().getRoot().getContext(); + + observersCount++; + if (observersCount == 1) { + source.observe(activity, observer); + } + } catch (Exception bindingException) { + Log.e("BINDING", bindingException.getMessage()); + } + } + + @Override + public void removeOnPropertyChangedCallback(OnPropertyChangedCallback callback) { + super.removeOnPropertyChangedCallback(callback); + observersCount--; + if (observersCount == 0) { + // отписываемся от LiveData, когда все view отбайндились от ObservableField + source.removeObserver(observer); + } + } +} diff --git a/app/src/main/java/touchin/aacplusdbtest/utils/LiveDataField.java b/app/src/main/java/touchin/aacplusdbtest/utils/LiveDataField.java new file mode 100644 index 0000000..3ffdd5a --- /dev/null +++ b/app/src/main/java/touchin/aacplusdbtest/utils/LiveDataField.java @@ -0,0 +1,58 @@ +/* + * Copyright (c) 2017 Touch Instinct + * + * This file is sample project file. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ +package touchin.aacplusdbtest.utils; + + +import android.arch.lifecycle.LiveData; +import android.arch.lifecycle.Observer; +import android.databinding.ObservableField; + +// наследуем от ObservableField +public class LiveDataField extends ObservableField { + private LiveData source; + // отслеживаем количество подписчиков на этот ObservableField + private int observersCount; + // Observer — класс из библиотеки Android Architecture Components + // подписчик LiveData — прокидывает значения из LiveData в ObservableField + private Observer observer = new Observer() { + public void onChanged(T value) { LiveDataField.this.set(value); } + }; + + public LiveDataField(LiveData source) { this.source = source; } + + @Override + public void addOnPropertyChangedCallback(OnPropertyChangedCallback callback) { + super.addOnPropertyChangedCallback(callback); + observersCount++; + if (observersCount == 1) { + // подписываемся на LiveData, когда к ObservableField прибайндивается первая view + source.observeForever(observer); + } + } + + @Override + public void removeOnPropertyChangedCallback(OnPropertyChangedCallback callback) { + super.removeOnPropertyChangedCallback(callback); + observersCount--; + if (observersCount == 0) { + // отписываемся от LiveData, когда все view отбайндились от ObservableField + source.removeObserver(observer); + } + } +} diff --git a/app/src/main/java/touchin/aacplusdbtest/utils/TextField.java b/app/src/main/java/touchin/aacplusdbtest/utils/TextField.java new file mode 100644 index 0000000..5569cea --- /dev/null +++ b/app/src/main/java/touchin/aacplusdbtest/utils/TextField.java @@ -0,0 +1,45 @@ +/* + * Copyright (c) 2017 Touch Instinct + * + * This file is sample project file. + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + */ +package touchin.aacplusdbtest.utils; + + +import android.databinding.ObservableField; +import android.text.Editable; +import android.text.TextWatcher; + +public class TextField extends ObservableField implements TextWatcher { + + @Override + public void beforeTextChanged(CharSequence s, int start, int count, int after) { + //do nothing + } + + @Override + public void onTextChanged(CharSequence s, int start, int before, int count) { + //do nothing + } + + @Override + public void afterTextChanged(Editable text) { + if (!text.toString().equals(get())) { + set(text.toString()); + } + } + +} diff --git a/app/src/main/res/layout/activity_profile.xml b/app/src/main/res/layout/activity_profile.xml new file mode 100644 index 0000000..2bcb5c1 --- /dev/null +++ b/app/src/main/res/layout/activity_profile.xml @@ -0,0 +1,46 @@ + + + + + + + + + + + + + + + + + + +