├── .gitignore ├── .idea ├── codeStyles │ └── Project.xml ├── gradle.xml ├── misc.xml └── runConfigurations.xml ├── app ├── .gitignore ├── build.gradle ├── proguard-rules.pro └── src │ ├── androidTest │ └── java │ │ └── com │ │ └── androidarchitecture │ │ └── learn │ │ └── noteapplication │ │ └── ExampleInstrumentedTest.java │ ├── main │ ├── AndroidManifest.xml │ ├── java │ │ └── com │ │ │ └── androidarchitecture │ │ │ └── learn │ │ │ └── noteapplication │ │ │ ├── EditNoteActivity.java │ │ │ ├── EditNoteViewModel.java │ │ │ ├── MainActivity.java │ │ │ ├── NewNoteActivity.java │ │ │ ├── Note.java │ │ │ ├── NoteDao.java │ │ │ ├── NoteListAdapter.java │ │ │ ├── NoteRoomDatabase.java │ │ │ └── NoteViewModel.java │ └── res │ │ ├── drawable-v24 │ │ └── ic_launcher_foreground.xml │ │ ├── drawable │ │ ├── ic_delete.png │ │ ├── ic_edit.png │ │ └── ic_launcher_background.xml │ │ ├── layout │ │ ├── activity_edit.xml │ │ ├── activity_main.xml │ │ ├── activity_new.xml │ │ ├── content_main.xml │ │ └── list_item.xml │ │ ├── menu │ │ └── menu_main.xml │ │ ├── mipmap-anydpi-v26 │ │ ├── ic_launcher.xml │ │ └── ic_launcher_round.xml │ │ ├── mipmap-hdpi │ │ ├── ic_launcher.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-mdpi │ │ ├── ic_launcher.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-xhdpi │ │ ├── ic_launcher.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-xxhdpi │ │ ├── ic_launcher.png │ │ └── ic_launcher_round.png │ │ ├── mipmap-xxxhdpi │ │ ├── ic_launcher.png │ │ └── ic_launcher_round.png │ │ └── values │ │ ├── colors.xml │ │ ├── dimens.xml │ │ ├── strings.xml │ │ └── styles.xml │ └── test │ └── java │ └── com │ └── androidarchitecture │ └── learn │ └── noteapplication │ └── ExampleUnitTest.java ├── build.gradle ├── gradle.properties ├── gradle └── wrapper │ ├── gradle-wrapper.jar │ └── gradle-wrapper.properties ├── gradlew ├── gradlew.bat └── settings.gradle /.gitignore: -------------------------------------------------------------------------------- 1 | *.iml 2 | .gradle 3 | /local.properties 4 | /.idea/caches/build_file_checksums.ser 5 | /.idea/libraries 6 | /.idea/modules.xml 7 | /.idea/workspace.xml 8 | .DS_Store 9 | /build 10 | /captures 11 | .externalNativeBuild 12 | -------------------------------------------------------------------------------- /.idea/codeStyles/Project.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 15 | 16 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | -------------------------------------------------------------------------------- /.idea/gradle.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 17 | 18 | -------------------------------------------------------------------------------- /.idea/misc.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 5 | 6 | 7 | 9 | -------------------------------------------------------------------------------- /.idea/runConfigurations.xml: -------------------------------------------------------------------------------- 1 | 2 | 3 | 4 | 11 | 12 | -------------------------------------------------------------------------------- /app/.gitignore: -------------------------------------------------------------------------------- 1 | /build 2 | -------------------------------------------------------------------------------- /app/build.gradle: -------------------------------------------------------------------------------- 1 | apply plugin: 'com.android.application' 2 | 3 | android { 4 | compileSdkVersion 27 5 | defaultConfig { 6 | applicationId "com.androidarchitecture.learn.noteapplication" 7 | minSdkVersion 26 8 | targetSdkVersion 27 9 | versionCode 1 10 | versionName "1.0" 11 | testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner" 12 | } 13 | buildTypes { 14 | release { 15 | minifyEnabled false 16 | proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro' 17 | } 18 | } 19 | } 20 | 21 | dependencies { 22 | implementation fileTree(dir: 'libs', include: ['*.jar']) 23 | implementation 'com.android.support:appcompat-v7:27.1.1' 24 | implementation 'com.android.support.constraint:constraint-layout:1.1.3' 25 | implementation 'com.android.support:design:27.1.1' 26 | testImplementation 'junit:junit:4.12' 27 | androidTestImplementation 'com.android.support.test:runner:1.0.2' 28 | androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2' 29 | 30 | def lifecycle_version = "1.1.1" 31 | implementation "android.arch.lifecycle:extensions:$lifecycle_version" 32 | annotationProcessor "android.arch.lifecycle:compiler:$lifecycle_version" 33 | 34 | // Room components 35 | def roomVersion = '1.1.1' 36 | implementation "android.arch.persistence.room:runtime:$roomVersion" 37 | annotationProcessor "android.arch.persistence.room:compiler:$roomVersion" 38 | androidTestImplementation "android.arch.persistence.room:testing:$roomVersion" 39 | 40 | implementation "com.android.support:recyclerview-v7:27.1.1" 41 | implementation "com.android.support:cardview-v7:27.1.1" 42 | } 43 | -------------------------------------------------------------------------------- /app/proguard-rules.pro: -------------------------------------------------------------------------------- 1 | # Add project specific ProGuard rules here. 2 | # You can control the set of applied configuration files using the 3 | # proguardFiles setting in build.gradle. 4 | # 5 | # For more details, see 6 | # http://developer.android.com/guide/developing/tools/proguard.html 7 | 8 | # If your project uses WebView with JS, uncomment the following 9 | # and specify the fully qualified class name to the JavaScript interface 10 | # class: 11 | #-keepclassmembers class fqcn.of.javascript.interface.for.webview { 12 | # public *; 13 | #} 14 | 15 | # Uncomment this to preserve the line number information for 16 | # debugging stack traces. 17 | #-keepattributes SourceFile,LineNumberTable 18 | 19 | # If you keep the line number information, uncomment this to 20 | # hide the original source file name. 21 | #-renamesourcefileattribute SourceFile 22 | -------------------------------------------------------------------------------- /app/src/androidTest/java/com/androidarchitecture/learn/noteapplication/ExampleInstrumentedTest.java: -------------------------------------------------------------------------------- 1 | package com.androidarchitecture.learn.noteapplication; 2 | 3 | import android.content.Context; 4 | import android.support.test.InstrumentationRegistry; 5 | import android.support.test.runner.AndroidJUnit4; 6 | 7 | import org.junit.Test; 8 | import org.junit.runner.RunWith; 9 | 10 | import static org.junit.Assert.*; 11 | 12 | /** 13 | * Instrumented test, which will execute on an Android device. 14 | * 15 | * @see Testing documentation 16 | */ 17 | @RunWith(AndroidJUnit4.class) 18 | public class ExampleInstrumentedTest { 19 | @Test 20 | public void useAppContext() { 21 | // Context of the app under test. 22 | Context appContext = InstrumentationRegistry.getTargetContext(); 23 | 24 | assertEquals("com.androidarchitecture.learn.noteapplication", appContext.getPackageName()); 25 | } 26 | } 27 | -------------------------------------------------------------------------------- /app/src/main/AndroidManifest.xml: -------------------------------------------------------------------------------- 1 | 2 | 4 | 5 | 12 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | -------------------------------------------------------------------------------- /app/src/main/java/com/androidarchitecture/learn/noteapplication/EditNoteActivity.java: -------------------------------------------------------------------------------- 1 | package com.androidarchitecture.learn.noteapplication; 2 | 3 | import android.arch.lifecycle.LiveData; 4 | import android.arch.lifecycle.Observer; 5 | import android.arch.lifecycle.ViewModelProviders; 6 | import android.content.Intent; 7 | import android.os.Bundle; 8 | import android.support.annotation.Nullable; 9 | import android.support.v7.app.AppCompatActivity; 10 | import android.view.View; 11 | import android.widget.EditText; 12 | 13 | public class EditNoteActivity extends AppCompatActivity { 14 | 15 | public static final String NOTE_ID = "note_id"; 16 | static final String UPDATED_NOTE = "note_text"; 17 | private EditText etNote; 18 | private Bundle bundle; 19 | private String noteId; 20 | private LiveData note; 21 | 22 | EditNoteViewModel noteModel; 23 | 24 | @Override 25 | protected void onCreate(@Nullable Bundle savedInstanceState) { 26 | super.onCreate(savedInstanceState); 27 | setContentView(R.layout.activity_edit); 28 | 29 | etNote = findViewById(R.id.etNote); 30 | 31 | bundle = getIntent().getExtras(); 32 | 33 | if (bundle != null) { 34 | noteId = bundle.getString("note_id"); 35 | } 36 | 37 | noteModel = ViewModelProviders.of(this).get(EditNoteViewModel.class); 38 | note = noteModel.getNote(noteId); 39 | note.observe(this, new Observer() { 40 | @Override 41 | public void onChanged(@Nullable Note note) { 42 | etNote.setText(note.getNote()); 43 | } 44 | }); 45 | } 46 | 47 | public void updateNote(View view) { 48 | String updatedNote = etNote.getText().toString(); 49 | Intent resultIntent = new Intent(); 50 | resultIntent.putExtra(NOTE_ID, noteId); 51 | resultIntent.putExtra(UPDATED_NOTE, updatedNote); 52 | setResult(RESULT_OK, resultIntent); 53 | finish(); 54 | } 55 | 56 | public void cancelUpdate(View view) { 57 | finish(); 58 | } 59 | } 60 | -------------------------------------------------------------------------------- /app/src/main/java/com/androidarchitecture/learn/noteapplication/EditNoteViewModel.java: -------------------------------------------------------------------------------- 1 | package com.androidarchitecture.learn.noteapplication; 2 | 3 | import android.app.Application; 4 | import android.arch.lifecycle.AndroidViewModel; 5 | import android.arch.lifecycle.LiveData; 6 | import android.support.annotation.NonNull; 7 | import android.util.Log; 8 | 9 | public class EditNoteViewModel extends AndroidViewModel { 10 | 11 | private String TAG = this.getClass().getSimpleName(); 12 | private NoteDao noteDao; 13 | private NoteRoomDatabase db; 14 | 15 | public EditNoteViewModel(@NonNull Application application) { 16 | super(application); 17 | Log.i(TAG, "Edit ViewModel"); 18 | db = NoteRoomDatabase.getDatabase(application); 19 | noteDao = db.noteDao(); 20 | } 21 | 22 | public LiveData getNote(String noteId) { 23 | return noteDao.getNote(noteId); 24 | } 25 | } 26 | -------------------------------------------------------------------------------- /app/src/main/java/com/androidarchitecture/learn/noteapplication/MainActivity.java: -------------------------------------------------------------------------------- 1 | package com.androidarchitecture.learn.noteapplication; 2 | 3 | import android.arch.lifecycle.Observer; 4 | import android.arch.lifecycle.ViewModelProviders; 5 | import android.content.Intent; 6 | import android.os.Bundle; 7 | import android.support.annotation.Nullable; 8 | import android.support.design.widget.FloatingActionButton; 9 | import android.support.design.widget.Snackbar; 10 | import android.support.v7.app.AppCompatActivity; 11 | import android.support.v7.widget.LinearLayoutManager; 12 | import android.support.v7.widget.RecyclerView; 13 | import android.support.v7.widget.Toolbar; 14 | import android.view.View; 15 | import android.view.Menu; 16 | import android.view.MenuItem; 17 | import android.widget.Toast; 18 | 19 | import java.util.List; 20 | import java.util.UUID; 21 | 22 | public class MainActivity extends AppCompatActivity implements NoteListAdapter.OnDeleteClickListener { 23 | 24 | private static final int NEW_NOTE_ACTIVITY_REQUEST_CODE = 1; 25 | public static final int UPDATE_NOTE_ACTIVITY_REQUEST_CODE = 2; 26 | private String TAG = this.getClass().getSimpleName(); 27 | private NoteViewModel noteViewModel; 28 | private NoteListAdapter noteListAdapter; 29 | 30 | @Override 31 | protected void onCreate(Bundle savedInstanceState) { 32 | super.onCreate(savedInstanceState); 33 | setContentView(R.layout.activity_main); 34 | Toolbar toolbar = findViewById(R.id.toolbar); 35 | setSupportActionBar(toolbar); 36 | 37 | RecyclerView recyclerView = findViewById(R.id.recyclerview); 38 | noteListAdapter = new NoteListAdapter(this, this); 39 | recyclerView.setAdapter(noteListAdapter); 40 | recyclerView.setLayoutManager(new LinearLayoutManager(this)); 41 | 42 | FloatingActionButton fab = findViewById(R.id.fab); 43 | fab.setOnClickListener(new View.OnClickListener() { 44 | @Override 45 | public void onClick(View view) { 46 | Intent intent = new Intent(MainActivity.this, NewNoteActivity.class); 47 | startActivityForResult(intent, NEW_NOTE_ACTIVITY_REQUEST_CODE); 48 | } 49 | }); 50 | 51 | noteViewModel = ViewModelProviders.of(this).get(NoteViewModel.class); 52 | 53 | noteViewModel.getAllNotes().observe(this, new Observer>() { 54 | @Override 55 | public void onChanged(@Nullable List notes) { 56 | noteListAdapter.setNotes(notes); 57 | } 58 | }); 59 | } 60 | 61 | @Override 62 | protected void onActivityResult(int requestCode, int resultCode, Intent data) { 63 | super.onActivityResult(requestCode, resultCode, data); 64 | 65 | if (requestCode == NEW_NOTE_ACTIVITY_REQUEST_CODE && resultCode == RESULT_OK) { 66 | 67 | // Code to insert note 68 | final String note_id = UUID.randomUUID().toString(); 69 | Note note = new Note(note_id, data.getStringExtra(NewNoteActivity.NOTE_ADDED)); 70 | noteViewModel.insert(note); 71 | 72 | Toast.makeText( 73 | getApplicationContext(), 74 | R.string.saved, 75 | Toast.LENGTH_LONG).show(); 76 | } else if (requestCode == UPDATE_NOTE_ACTIVITY_REQUEST_CODE && resultCode == RESULT_OK) { 77 | 78 | // Code to update the note 79 | Note note = new Note( 80 | data.getStringExtra(EditNoteActivity.NOTE_ID), 81 | data.getStringExtra(EditNoteActivity.UPDATED_NOTE)); 82 | noteViewModel.update(note); 83 | 84 | Toast.makeText( 85 | getApplicationContext(), 86 | R.string.updated, 87 | Toast.LENGTH_LONG).show(); 88 | 89 | } else { 90 | Toast.makeText( 91 | getApplicationContext(), 92 | R.string.not_saved, 93 | Toast.LENGTH_LONG).show(); 94 | } 95 | } 96 | 97 | @Override 98 | public void OnDeleteClickListener(Note myNote) { 99 | // Code for Delete operation 100 | noteViewModel.delete(myNote); 101 | } 102 | } 103 | -------------------------------------------------------------------------------- /app/src/main/java/com/androidarchitecture/learn/noteapplication/NewNoteActivity.java: -------------------------------------------------------------------------------- 1 | package com.androidarchitecture.learn.noteapplication; 2 | 3 | import android.content.Intent; 4 | import android.os.Bundle; 5 | import android.support.annotation.Nullable; 6 | import android.support.v7.app.AppCompatActivity; 7 | import android.text.TextUtils; 8 | import android.view.View; 9 | import android.widget.Button; 10 | import android.widget.EditText; 11 | 12 | public class NewNoteActivity extends AppCompatActivity { 13 | 14 | public static final String NOTE_ADDED = "new_note"; 15 | 16 | private EditText etNewNote; 17 | 18 | @Override 19 | protected void onCreate(@Nullable Bundle savedInstanceState) { 20 | super.onCreate(savedInstanceState); 21 | setContentView(R.layout.activity_new); 22 | etNewNote = findViewById(R.id.etNewNote); 23 | 24 | Button button = findViewById(R.id.bAdd); 25 | button.setOnClickListener(new View.OnClickListener() { 26 | 27 | public void onClick(View view) { 28 | 29 | Intent resultIntent = new Intent(); 30 | 31 | if (TextUtils.isEmpty(etNewNote.getText())) { 32 | setResult(RESULT_CANCELED, resultIntent); 33 | } else { 34 | String note = etNewNote.getText().toString(); 35 | resultIntent.putExtra(NOTE_ADDED, note); 36 | setResult(RESULT_OK, resultIntent); 37 | } 38 | 39 | finish(); 40 | } 41 | }); 42 | } 43 | } 44 | -------------------------------------------------------------------------------- /app/src/main/java/com/androidarchitecture/learn/noteapplication/Note.java: -------------------------------------------------------------------------------- 1 | package com.androidarchitecture.learn.noteapplication; 2 | 3 | import android.arch.persistence.room.ColumnInfo; 4 | import android.arch.persistence.room.Entity; 5 | import android.arch.persistence.room.PrimaryKey; 6 | import android.support.annotation.NonNull; 7 | 8 | @Entity(tableName = "notes") 9 | public class Note { 10 | 11 | @NonNull 12 | public String getId() { 13 | return id; 14 | } 15 | 16 | @NonNull 17 | public String getNote() { 18 | return this.mNote; 19 | } 20 | 21 | @PrimaryKey 22 | @NonNull 23 | private String id; 24 | 25 | @NonNull 26 | @ColumnInfo(name = "note") 27 | private String mNote; 28 | 29 | public Note(String id, String note) { 30 | this.id = id; 31 | this.mNote = note; 32 | } 33 | 34 | 35 | 36 | } 37 | -------------------------------------------------------------------------------- /app/src/main/java/com/androidarchitecture/learn/noteapplication/NoteDao.java: -------------------------------------------------------------------------------- 1 | package com.androidarchitecture.learn.noteapplication; 2 | 3 | import android.arch.lifecycle.LiveData; 4 | import android.arch.persistence.room.Dao; 5 | import android.arch.persistence.room.Delete; 6 | import android.arch.persistence.room.Insert; 7 | import android.arch.persistence.room.Query; 8 | import android.arch.persistence.room.Update; 9 | 10 | import java.util.List; 11 | 12 | @Dao 13 | public interface NoteDao { 14 | 15 | @Insert 16 | void insert(Note note); 17 | 18 | @Query("SELECT * FROM notes") 19 | LiveData> getAllNotes(); 20 | 21 | @Query("SELECT * FROM notes WHERE id=:noteId") 22 | LiveData getNote(String noteId); 23 | 24 | @Update 25 | void update(Note note); 26 | 27 | @Delete 28 | int delete(Note note); 29 | } 30 | -------------------------------------------------------------------------------- /app/src/main/java/com/androidarchitecture/learn/noteapplication/NoteListAdapter.java: -------------------------------------------------------------------------------- 1 | package com.androidarchitecture.learn.noteapplication; 2 | 3 | import android.app.Activity; 4 | import android.content.Context; 5 | import android.content.Intent; 6 | import android.support.annotation.NonNull; 7 | import android.support.v7.widget.RecyclerView; 8 | import android.view.LayoutInflater; 9 | import android.view.View; 10 | import android.view.ViewGroup; 11 | import android.widget.ImageView; 12 | import android.widget.ListAdapter; 13 | import android.widget.TextView; 14 | 15 | import java.util.List; 16 | 17 | public class NoteListAdapter extends RecyclerView.Adapter { 18 | 19 | public interface OnDeleteClickListener { 20 | void OnDeleteClickListener(Note myNote); 21 | } 22 | 23 | private final LayoutInflater layoutInflater; 24 | private Context mContext; 25 | private List mNotes; 26 | private OnDeleteClickListener onDeleteClickListener; 27 | 28 | public NoteListAdapter(Context context, OnDeleteClickListener listener) { 29 | layoutInflater = LayoutInflater.from(context); 30 | mContext = context; 31 | this.onDeleteClickListener = listener; 32 | } 33 | 34 | @NonNull 35 | @Override 36 | public NoteViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) { 37 | View itemView = layoutInflater.inflate(R.layout.list_item, parent, false); 38 | NoteViewHolder viewHolder = new NoteViewHolder(itemView); 39 | return viewHolder; 40 | } 41 | 42 | @Override 43 | public void onBindViewHolder(@NonNull NoteViewHolder holder, int position) { 44 | 45 | if (mNotes != null) { 46 | Note note = mNotes.get(position); 47 | holder.setData(note.getNote(), position); 48 | holder.setListeners(); 49 | } else { 50 | // Covers the case of data not being ready yet. 51 | holder.noteItemView.setText(R.string.no_note); 52 | } 53 | } 54 | 55 | @Override 56 | public int getItemCount() { 57 | if (mNotes != null) 58 | return mNotes.size(); 59 | else return 0; 60 | } 61 | 62 | public void setNotes(List notes) { 63 | mNotes = notes; 64 | notifyDataSetChanged(); 65 | } 66 | 67 | public class NoteViewHolder extends RecyclerView.ViewHolder { 68 | 69 | private TextView noteItemView; 70 | private int mPosition; 71 | private ImageView imgDelete, imgEdit; 72 | 73 | public NoteViewHolder(View itemView) { 74 | super(itemView); 75 | noteItemView = itemView.findViewById(R.id.txvNote); 76 | imgDelete = itemView.findViewById(R.id.ivRowDelete); 77 | imgEdit = itemView.findViewById(R.id.ivRowEdit); 78 | } 79 | 80 | public void setData(String note, int position) { 81 | noteItemView.setText(note); 82 | mPosition = position; 83 | } 84 | 85 | public void setListeners() { 86 | imgEdit.setOnClickListener(new View.OnClickListener() { 87 | @Override 88 | public void onClick(View v) { 89 | Intent intent = new Intent(mContext, EditNoteActivity.class); 90 | intent.putExtra("note_id", mNotes.get(mPosition).getId()); 91 | ((Activity)mContext).startActivityForResult(intent, MainActivity.UPDATE_NOTE_ACTIVITY_REQUEST_CODE); 92 | } 93 | }); 94 | 95 | imgDelete.setOnClickListener(new View.OnClickListener() { 96 | @Override 97 | public void onClick(View v) { 98 | if (onDeleteClickListener != null) { 99 | onDeleteClickListener.OnDeleteClickListener(mNotes.get(mPosition)); 100 | } 101 | } 102 | }); 103 | } 104 | } 105 | } 106 | -------------------------------------------------------------------------------- /app/src/main/java/com/androidarchitecture/learn/noteapplication/NoteRoomDatabase.java: -------------------------------------------------------------------------------- 1 | package com.androidarchitecture.learn.noteapplication; 2 | 3 | import android.arch.persistence.room.Database; 4 | import android.arch.persistence.room.Room; 5 | import android.arch.persistence.room.RoomDatabase; 6 | import android.content.Context; 7 | 8 | @Database(entities = Note.class, version = 1) 9 | public abstract class NoteRoomDatabase extends RoomDatabase { 10 | 11 | public abstract NoteDao noteDao(); 12 | 13 | private static volatile NoteRoomDatabase noteRoomInstance; 14 | 15 | static NoteRoomDatabase getDatabase(final Context context) { 16 | if (noteRoomInstance == null) { 17 | synchronized (NoteRoomDatabase.class) { 18 | if (noteRoomInstance == null) { 19 | noteRoomInstance = Room.databaseBuilder(context.getApplicationContext(), 20 | NoteRoomDatabase.class, "note_database") 21 | .build(); 22 | } 23 | } 24 | } 25 | return noteRoomInstance; 26 | } 27 | } 28 | -------------------------------------------------------------------------------- /app/src/main/java/com/androidarchitecture/learn/noteapplication/NoteViewModel.java: -------------------------------------------------------------------------------- 1 | package com.androidarchitecture.learn.noteapplication; 2 | 3 | import android.app.Application; 4 | import android.arch.lifecycle.AndroidViewModel; 5 | import android.arch.lifecycle.LiveData; 6 | import android.arch.lifecycle.MutableLiveData; 7 | import android.os.AsyncTask; 8 | import android.util.Log; 9 | 10 | import java.util.List; 11 | 12 | public class NoteViewModel extends AndroidViewModel { 13 | 14 | private String TAG = this.getClass().getSimpleName(); 15 | private NoteDao noteDao; 16 | private NoteRoomDatabase noteDB; 17 | private LiveData> mAllNotes; 18 | 19 | public NoteViewModel(Application application) { 20 | super(application); 21 | 22 | noteDB = NoteRoomDatabase.getDatabase(application); 23 | noteDao = noteDB.noteDao(); 24 | mAllNotes = noteDao.getAllNotes(); 25 | } 26 | 27 | public void insert(Note note) { 28 | new InsertAsyncTask(noteDao).execute(note); 29 | } 30 | 31 | LiveData> getAllNotes() { 32 | return mAllNotes; 33 | } 34 | 35 | public void update(Note note) { 36 | new UpdateAsyncTask(noteDao).execute(note); 37 | } 38 | 39 | public void delete(Note note) { 40 | new DeleteAsyncTask(noteDao).execute(note); 41 | } 42 | 43 | @Override 44 | protected void onCleared() { 45 | super.onCleared(); 46 | Log.i(TAG, "ViewModel Destroyed"); 47 | } 48 | 49 | private class OperationsAsyncTask extends AsyncTask { 50 | 51 | NoteDao mAsyncTaskDao; 52 | 53 | OperationsAsyncTask(NoteDao dao) { 54 | this.mAsyncTaskDao = dao; 55 | } 56 | 57 | @Override 58 | protected Void doInBackground(Note... notes) { 59 | return null; 60 | } 61 | } 62 | 63 | private class InsertAsyncTask extends OperationsAsyncTask { 64 | 65 | InsertAsyncTask(NoteDao mNoteDao) { 66 | super(mNoteDao); 67 | } 68 | 69 | @Override 70 | protected Void doInBackground(Note... notes) { 71 | mAsyncTaskDao.insert(notes[0]); 72 | return null; 73 | } 74 | } 75 | 76 | private class UpdateAsyncTask extends OperationsAsyncTask { 77 | 78 | UpdateAsyncTask(NoteDao noteDao) { 79 | super(noteDao); 80 | } 81 | 82 | @Override 83 | protected Void doInBackground(Note... notes) { 84 | mAsyncTaskDao.update(notes[0]); 85 | return null; 86 | } 87 | } 88 | 89 | private class DeleteAsyncTask extends OperationsAsyncTask { 90 | 91 | public DeleteAsyncTask(NoteDao noteDao) { 92 | super(noteDao); 93 | } 94 | 95 | @Override 96 | protected Void doInBackground(Note... notes) { 97 | mAsyncTaskDao.delete(notes[0]); 98 | return null; 99 | } 100 | } 101 | } 102 | -------------------------------------------------------------------------------- /app/src/main/res/drawable-v24/ic_launcher_foreground.xml: -------------------------------------------------------------------------------- 1 | 7 | 12 | 13 | 19 | 22 | 25 | 26 | 27 | 28 | 34 | 35 | -------------------------------------------------------------------------------- /app/src/main/res/drawable/ic_delete.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/smartherd/ArchitectureComponentsRoom/1ea4e1ecbe1205b1b2adca9c398e3370e4a5dfbe/app/src/main/res/drawable/ic_delete.png -------------------------------------------------------------------------------- /app/src/main/res/drawable/ic_edit.png: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/smartherd/ArchitectureComponentsRoom/1ea4e1ecbe1205b1b2adca9c398e3370e4a5dfbe/app/src/main/res/drawable/ic_edit.png -------------------------------------------------------------------------------- /app/src/main/res/drawable/ic_launcher_background.xml: -------------------------------------------------------------------------------- 1 | 2 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 26 | 28 | 30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | 48 | 50 | 52 | 54 | 56 | 58 | 60 | 62 | 64 | 66 | 68 | 70 | 72 | 74 | 75 | -------------------------------------------------------------------------------- /app/src/main/res/layout/activity_edit.xml: -------------------------------------------------------------------------------- 1 | 2 | 6 | 7 | 12 | 13 | 18 |