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Convert LetterSoundsFragment from Java to Kotlin
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‎app/src/main/java/ai/elimu/content_provider/ui/letter_sound/LetterSoundsFragment.kt

Lines changed: 145 additions & 143 deletions
Original file line numberDiff line numberDiff line change
@@ -1,179 +1,181 @@
1-
package ai.elimu.content_provider.ui.letter_sound;
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import android.os.Bundle;
4-
import android.util.Log;
5-
import android.view.LayoutInflater;
6-
import android.view.View;
7-
import android.view.ViewGroup;
8-
import android.widget.ProgressBar;
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import android.widget.TextView;
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import androidx.annotation.NonNull;
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import androidx.annotation.Nullable;
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import androidx.fragment.app.Fragment;
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import androidx.lifecycle.Observer;
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import androidx.lifecycle.ViewModelProvider;
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import com.google.android.material.snackbar.Snackbar;
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import java.util.List;
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import java.util.concurrent.ExecutorService;
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import java.util.concurrent.Executors;
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import ai.elimu.content_provider.BaseApplication;
24-
import ai.elimu.content_provider.R;
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import ai.elimu.content_provider.rest.LetterSoundsService;
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import ai.elimu.content_provider.room.GsonToRoomConverter;
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import ai.elimu.content_provider.room.dao.LetterSoundDao;
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import ai.elimu.content_provider.room.dao.LetterSound_LetterDao;
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import ai.elimu.content_provider.room.dao.LetterSound_SoundDao;
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import ai.elimu.content_provider.room.db.RoomDb;
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import ai.elimu.content_provider.room.entity.LetterSound;
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import ai.elimu.content_provider.room.entity.LetterSound_Letter;
33-
import ai.elimu.content_provider.room.entity.LetterSound_Sound;
34-
import ai.elimu.model.v2.gson.content.LetterGson;
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import ai.elimu.model.v2.gson.content.LetterSoundGson;
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import ai.elimu.model.v2.gson.content.SoundGson;
37-
import retrofit2.Call;
38-
import retrofit2.Callback;
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import retrofit2.Response;
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import retrofit2.Retrofit;
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public class LetterSoundsFragment extends Fragment {
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private LetterSoundsViewModel letterSoundsViewModel;
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private ProgressBar progressBar;
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private TextView textView;
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public View onCreateView(@NonNull LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
51-
Log.i(getClass().getName(), "onCreateView");
52-
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letterSoundsViewModel = new ViewModelProvider(this).get(LetterSoundsViewModel.class);
54-
View root = inflater.inflate(R.layout.fragment_letter_sounds, container, false);
55-
progressBar = root.findViewById(R.id.progress_bar_letter_sounds);
56-
textView = root.findViewById(R.id.text_letter_sounds);
57-
letterSoundsViewModel.getText().observe(getViewLifecycleOwner(), new Observer<String>() {
58-
@Override
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public void onChanged(@Nullable String s) {
60-
Log.i(getClass().getName(), "onChanged");
61-
textView.setText(s);
1+
package ai.elimu.content_provider.ui.letter_sound
2+
3+
import ai.elimu.content_provider.BaseApplication
4+
import ai.elimu.content_provider.R
5+
import ai.elimu.content_provider.rest.LetterSoundsService
6+
import ai.elimu.content_provider.room.GsonToRoomConverter
7+
import ai.elimu.content_provider.room.db.RoomDb
8+
import ai.elimu.content_provider.room.entity.LetterSound_Letter
9+
import ai.elimu.content_provider.room.entity.LetterSound_Sound
10+
import ai.elimu.model.v2.gson.content.LetterSoundGson
11+
import android.os.Bundle
12+
import android.util.Log
13+
import android.view.LayoutInflater
14+
import android.view.View
15+
import android.view.ViewGroup
16+
import android.widget.ProgressBar
17+
import android.widget.TextView
18+
import androidx.fragment.app.Fragment
19+
import androidx.lifecycle.Observer
20+
import androidx.lifecycle.ViewModelProvider
21+
import com.google.android.material.snackbar.Snackbar
22+
import retrofit2.Call
23+
import retrofit2.Callback
24+
import retrofit2.Response
25+
import java.util.concurrent.Executors
26+
27+
class LetterSoundsFragment : Fragment() {
28+
private var letterSoundsViewModel: LetterSoundsViewModel? = null
29+
30+
private var progressBar: ProgressBar? = null
31+
32+
private var textView: TextView? = null
33+
34+
override fun onCreateView(
35+
inflater: LayoutInflater,
36+
container: ViewGroup?,
37+
savedInstanceState: Bundle?
38+
): View? {
39+
Log.i(javaClass.name, "onCreateView")
40+
41+
letterSoundsViewModel = ViewModelProvider(this).get(
42+
LetterSoundsViewModel::class.java
43+
)
44+
val root = inflater.inflate(R.layout.fragment_letter_sounds, container, false)
45+
progressBar = root.findViewById(R.id.progress_bar_letter_sounds)
46+
textView = root.findViewById(R.id.text_letter_sounds) as? TextView
47+
letterSoundsViewModel!!.text.observe(viewLifecycleOwner, object : Observer<String?> {
48+
override fun onChanged(s: String?) {
49+
Log.i(javaClass.name, "onChanged")
50+
textView?.text = s
6251
}
63-
});
64-
return root;
52+
})
53+
return root
6554
}
6655

67-
@Override
68-
public void onStart() {
69-
Log.i(getClass().getName(), "onStart");
70-
super.onStart();
56+
override fun onStart() {
57+
Log.i(javaClass.name, "onStart")
58+
super.onStart()
7159

7260
// Download LetterSounds from REST API, and store them in the database
73-
BaseApplication baseApplication = (BaseApplication) getActivity().getApplication();
74-
Retrofit retrofit = baseApplication.getRetrofit();
75-
LetterSoundsService letterSoundsService = retrofit.create(LetterSoundsService.class);
76-
Call<List<LetterSoundGson>> letterSoundGsonsCall = letterSoundsService.listLetterSounds();
77-
Log.i(getClass().getName(), "letterSoundGsonsCall.request(): " + letterSoundGsonsCall.request());
78-
letterSoundGsonsCall.enqueue(new Callback<List<LetterSoundGson>>() {
79-
80-
@Override
81-
public void onResponse(Call<List<LetterSoundGson>> call, Response<List<LetterSoundGson>> response) {
82-
Log.i(getClass().getName(), "onResponse");
83-
84-
Log.i(getClass().getName(), "response: " + response);
85-
if (response.isSuccessful()) {
86-
List<LetterSoundGson> letterSoundGsons = response.body();
87-
Log.i(getClass().getName(), "letterSoundGsons.size(): " + letterSoundGsons.size());
88-
89-
if (letterSoundGsons.size() > 0) {
90-
processResponseBody(letterSoundGsons);
61+
val baseApplication = activity!!.application as BaseApplication
62+
val retrofit = baseApplication.retrofit
63+
val letterSoundsService = retrofit.create(
64+
LetterSoundsService::class.java
65+
)
66+
val letterSoundGsonsCall = letterSoundsService.listLetterSounds()
67+
Log.i(javaClass.name, "letterSoundGsonsCall.request(): " + letterSoundGsonsCall.request())
68+
letterSoundGsonsCall.enqueue(object : Callback<List<LetterSoundGson>> {
69+
override fun onResponse(
70+
call: Call<List<LetterSoundGson>>,
71+
response: Response<List<LetterSoundGson>>
72+
) {
73+
Log.i(javaClass.name, "onResponse")
74+
75+
Log.i(javaClass.name, "response: $response")
76+
if (response.isSuccessful) {
77+
val letterSoundGsons = response.body()!!
78+
Log.i(javaClass.name, "letterSoundGsons.size(): " + letterSoundGsons.size)
79+
80+
if (letterSoundGsons.size > 0) {
81+
processResponseBody(letterSoundGsons)
9182
}
9283
} else {
9384
// Handle error
94-
Snackbar.make(textView, response.toString(), Snackbar.LENGTH_LONG)
95-
.setBackgroundTint(getResources().getColor(R.color.deep_orange_darken_4))
96-
.show();
97-
progressBar.setVisibility(View.GONE);
85+
Snackbar.make(textView!!, response.toString(), Snackbar.LENGTH_LONG)
86+
.setBackgroundTint(resources.getColor(R.color.deep_orange_darken_4))
87+
.show()
88+
progressBar!!.visibility = View.GONE
9889
}
9990
}
10091

101-
@Override
102-
public void onFailure(Call<List<LetterSoundGson>> call, Throwable t) {
103-
Log.e(getClass().getName(), "onFailure", t);
92+
override fun onFailure(call: Call<List<LetterSoundGson>>, t: Throwable) {
93+
Log.e(javaClass.name, "onFailure", t)
10494

105-
Log.e(getClass().getName(), "t.getCause():", t.getCause());
95+
Log.e(javaClass.name, "t.getCause():", t.cause)
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10797
// Handle error
108-
Snackbar.make(textView, t.getCause().toString(), Snackbar.LENGTH_LONG)
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.setBackgroundTint(getResources().getColor(R.color.deep_orange_darken_4))
110-
.show();
111-
progressBar.setVisibility(View.GONE);
98+
Snackbar.make(textView!!, t.cause.toString(), Snackbar.LENGTH_LONG)
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.setBackgroundTint(resources.getColor(R.color.deep_orange_darken_4))
100+
.show()
101+
progressBar!!.visibility = View.GONE
112102
}
113-
});
103+
})
114104
}
115105

116-
private void processResponseBody(List<LetterSoundGson> letterSoundGsons) {
117-
Log.i(getClass().getName(), "processResponseBody");
106+
private fun processResponseBody(letterSoundGsons: List<LetterSoundGson>) {
107+
Log.i(javaClass.name, "processResponseBody")
118108

119-
ExecutorService executorService = Executors.newSingleThreadExecutor();
120-
executorService.execute(new Runnable() {
121-
@Override
122-
public void run() {
123-
Log.i(getClass().getName(), "run");
109+
val executorService = Executors.newSingleThreadExecutor()
110+
executorService.execute(object : Runnable {
111+
override fun run() {
112+
Log.i(javaClass.name, "run")
124113

125-
RoomDb roomDb = RoomDb.getDatabase(getContext());
126-
LetterSoundDao letterSoundDao = roomDb.letterSoundDao();
127-
LetterSound_LetterDao letterSound_LetterDao = roomDb.letterSound_LetterDao();
128-
LetterSound_SoundDao letterSound_SoundDao = roomDb.letterSound_SoundDao();
114+
val roomDb = RoomDb.getDatabase(context)
115+
val letterSoundDao = roomDb.letterSoundDao()
116+
val letterSound_LetterDao = roomDb.letterSound_LetterDao()
117+
val letterSound_SoundDao = roomDb.letterSound_SoundDao()
129118

130119
// Empty the database table before downloading up-to-date content
131-
letterSound_LetterDao.deleteAll();
132-
letterSound_SoundDao.deleteAll();
133-
letterSoundDao.deleteAll();
120+
letterSound_LetterDao.deleteAll()
121+
letterSound_SoundDao.deleteAll()
122+
letterSoundDao.deleteAll()
134123

135-
for (LetterSoundGson letterSoundGson : letterSoundGsons) {
136-
Log.i(getClass().getName(), "letterSoundGson.getId(): " + letterSoundGson.getId());
124+
for (letterSoundGson in letterSoundGsons) {
125+
Log.i(javaClass.name, "letterSoundGson.getId(): " + letterSoundGson.id)
137126

138127
// Store the LetterSound in the database
139-
LetterSound letterSound = GsonToRoomConverter.getLetterSound(letterSoundGson);
140-
letterSoundDao.insert(letterSound);
141-
Log.i(getClass().getName(), "Stored LetterSound in database with ID " + letterSound.getId());
128+
val letterSound = GsonToRoomConverter.getLetterSound(letterSoundGson)
129+
letterSoundDao.insert(letterSound)
130+
Log.i(
131+
javaClass.name,
132+
"Stored LetterSound in database with ID " + letterSound.id
133+
)
142134

143135
// Store all the LetterSound's letters in the database
144-
List<LetterGson> letterGsons = letterSoundGson.getLetters();
145-
Log.i(getClass().getName(), "letterGsons.size(): " + letterGsons.size());
146-
for (LetterGson letterGson : letterGsons) {
147-
Log.i(getClass().getName(), "letterGson.getId(): " + letterGson.getId());
148-
LetterSound_Letter letterSound_Letter = new LetterSound_Letter();
149-
letterSound_Letter.setLetterSound_id(letterSoundGson.getId());
150-
letterSound_Letter.setLetters_id(letterGson.getId());
151-
letterSound_LetterDao.insert(letterSound_Letter);
152-
Log.i(getClass().getName(), "Stored LetterSound_Letter in database. LetterSound_id: " + letterSound_Letter.getLetterSound_id() + ", letters_id: " + letterSound_Letter.getLetters_id());
136+
val letterGsons = letterSoundGson.letters
137+
Log.i(javaClass.name, "letterGsons.size(): " + letterGsons.size)
138+
for (letterGson in letterGsons) {
139+
Log.i(javaClass.name, "letterGson.getId(): " + letterGson.id)
140+
val letterSound_Letter = LetterSound_Letter()
141+
letterSound_Letter.letterSound_id = letterSoundGson.id
142+
letterSound_Letter.letters_id = letterGson.id
143+
letterSound_LetterDao.insert(letterSound_Letter)
144+
Log.i(
145+
javaClass.name,
146+
"Stored LetterSound_Letter in database. LetterSound_id: " + letterSound_Letter.letterSound_id + ", letters_id: " + letterSound_Letter.letters_id
147+
)
153148
}
154149

155150
// Store all the LetterSound's sounds in the database
156-
List<SoundGson> soundGsons = letterSoundGson.getSounds();
157-
Log.i(getClass().getName(), "soundGsons.size():" + soundGsons.size());
158-
for (SoundGson soundGson : soundGsons) {
159-
Log.i(getClass().getName(), "soundGson.getId(): " + soundGson.getId());
160-
LetterSound_Sound letterSound_Sound = new LetterSound_Sound();
161-
letterSound_Sound.setLetterSound_id(letterSoundGson.getId());
162-
letterSound_Sound.setSounds_id(soundGson.getId());
163-
letterSound_SoundDao.insert(letterSound_Sound);
164-
Log.i(getClass().getName(), "Stored LetterSound_Sound in database. LetterSound_id: " + letterSound_Sound.getLetterSound_id() + ", sounds_id: " + letterSound_Sound.getSounds_id());
151+
val soundGsons = letterSoundGson.sounds
152+
Log.i(javaClass.name, "soundGsons.size():" + soundGsons.size)
153+
for (soundGson in soundGsons) {
154+
Log.i(javaClass.name, "soundGson.getId(): " + soundGson.id)
155+
val letterSound_Sound = LetterSound_Sound()
156+
letterSound_Sound.letterSound_id = letterSoundGson.id
157+
letterSound_Sound.sounds_id = soundGson.id
158+
letterSound_SoundDao.insert(letterSound_Sound)
159+
Log.i(
160+
javaClass.name,
161+
"Stored LetterSound_Sound in database. LetterSound_id: " + letterSound_Sound.letterSound_id + ", sounds_id: " + letterSound_Sound.sounds_id
162+
)
165163
}
166164
}
167165

168166
// Update the UI
169-
List<LetterSound> letterSounds = letterSoundDao.loadAll();
170-
Log.i(getClass().getName(), "letterSounds.size(): " + letterSounds.size());
171-
getActivity().runOnUiThread(() -> {
172-
textView.setText("letterSounds.size(): " + letterSounds.size());
173-
Snackbar.make(textView, "letterSounds.size(): " + letterSounds.size(), Snackbar.LENGTH_LONG).show();
174-
progressBar.setVisibility(View.GONE);
175-
});
167+
val letterSounds = letterSoundDao.loadAll()
168+
Log.i(javaClass.name, "letterSounds.size(): " + letterSounds.size)
169+
activity!!.runOnUiThread {
170+
textView!!.text = "letterSounds.size(): " + letterSounds.size
171+
Snackbar.make(
172+
textView!!,
173+
"letterSounds.size(): " + letterSounds.size,
174+
Snackbar.LENGTH_LONG
175+
).show()
176+
progressBar!!.visibility = View.GONE
177+
}
176178
}
177-
});
179+
})
178180
}
179181
}

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