Why my items are not redrawn after invoking `invalidateViews()` ?
I ask because i try to refresh `listItems` after a bg-thread notify an image rsc was downloaded.
But nothing is updated. Only after exiting and re-entering the new icons are drawn.
I have an activity with `adapter` of type `SettingValueAdapter extends BaseAdapter`
it has a member:
`private SettingsValue[] values;`
it has two interesting methods:
@override
public View getView(int position, View view, ViewGroup parent) {
AddressItem ai= (AddressItem)getItem(position);
DriveToNativeManager dnm = DriveToNativeManager.getInstance();
if (view == null) {
LayoutInflater li = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
view = li.inflate(R.layout.address_item, null);
}
view.setTag(R.id.addressItem,ai);
view.setTag(position);
view.findViewById(R.id.fullAddressItemCol).setVisibility(View.VISIBLE);
view.findViewById(R.id.addressItemTouch).setVisibility(View.GONE);
view.findViewById(R.id.addressItemImage).setVisibility(View.GONE);
if (ai != null) {
...
}
view.findViewById(R.id.addressItemIconLayout).setVisibility(View.VISIBLE);
Drawable icon = ResManager.GetSkinDrawable(ai.getIcon() + ".bin");
((ImageView)view.findViewById(R.id.addressItemIcon)).setImageDrawable(icon);
..
}
I attach a callback to the bg-thread (c language) image downloading process.
The callback switches to the ui-thread and calls this `refreshList`:
public void refreshSearchIconsOnSearchActivity() {
Runnable refreshViewEvent = new Runnable() {
@override
public void run() {
Activity currentActivity = AppService.getActiveActivity();
if (currentActivity instanceof SearchActivity) {
Log.d("w", "refreshSearchIconsOnSearchActivity callback running in thread "
+ Thread.currentThread().getId() );
//results list
((SearchActivity) currentActivity).refreshList();
}
}
};
AppService.Post(refreshViewEvent);
}
However, the images are done downloading and are not refreshed on the activity.
They are refreshed only when I leave an re-enter the activity.
What am I missing?
Related
I'm trying to develop (for the liveview) using an SDK and need to get a bitmap of Google Maps.
Code:
//Map Section
public class myMap extends MapActivity {
MapView mapView;
Bitmap bitmap;
boolean created = false;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
createMap();
}
public void createMap()
{
// build map and mark point
mapView = new MapView(this, "keykeykeykeykeykey");
mapView.setBuiltInZoomControls(false);
GeoPoint point = new GeoPoint(52242730,-884211);
mapView.getController().animateTo(point);
mapView.preLoad();
// copy MapView to canvas
bitmap = Bitmap.createBitmap(400, 800, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
mapView.draw(canvas);
PluginUtils.sendTextBitmap(mLiveViewAdapter, mPluginId, "Loading Map...", 128, 12);
created = true;
}
public void displayMap()
{
if (created == false)
{
createMap();
}
//Display map on device
Bitmap mybit = Bitmap.createBitmap(128, 128, Bitmap.Config.ARGB_8888);
for(int i = 0; i < 128; i++)
{
for(int j = 0; j < 128; j++)
{
mybit.setPixel(i, j, bitmap.getPixel(i, j));
}
}
//white pixel for debugging
mybit.setPixel(64, 64, Color.WHITE);
}
@Override
protected boolean isRouteDisplayed() {
// TODO Auto-generated method stub
return false;
}
}
Is what I've got so far, the code in createMap() was in onCreate() but It didn't seem to be called.
Now it just force closes.
Anyone know how to help? Is there a better place to ask development questions?
Thanks.
-=Edit=-
Oh, and here's the routine calling the map thing, every couple of seconds.
Code:
private class Timer implements Runnable {
@Override
public void run() {
// TODO Auto-generated method stub
myMap theMap = new myMap();
theMap.displayMap();
}
}
Okay, looks like you cant use google street map like this.
Anyone looking for similar solution, I used open street map and downloaded 'slipery tiles' png's. They provide java routines for finding the tile url from lat/lon.
http://wiki.openstreetmap.org/wiki/Slippy_map_tilenames
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
In previous article, we looked at Notification API with Hello SmartWatch demo. In this article, we will focus on Control API.
http://forum.xda-developers.com/smartwatch/sony/tut-introduction-smart-watch-t2807896
http://forum.xda-developers.com/smartwatch/sony/tut-smartwatch-app-development-part-2-t2807954
http://forum.xda-developers.com/smartwatch/sony/tut-smartwatch-app-development-part-3-t2807966
Control API is responsible for
Extension lifecycle: It allows you to start and stop extension using Intent. Extension means SmartWatch Host application.
Control.Intents.CONTROL_START_INTENT
Control.Intents.CONTROL_STOP_INTENT.
Controlling the display: Normally we don't require to control the display. Default screen state is "Auto", for the specific need you can change screen state by using Intent.
Control.Intents.SCREEN_STATE_OFF
Control.Intents.SCREEN_STATE_AUTO
Control.Intents.SCREEN_STATE_DIM
Control.Intents.SCREEN_STATE_ON
Controlling the LEDs: It used to switch on /off LEDs based on notification.
Control.Intents.CONTROL_LED_INTENT
Controlling the vibrator: It allows you to vibrate SmartWatch.
Control.Intents.CONTROL_VIBRATE_INTENT
Key event: It is used to capture hardware key i.e. home, back and menu key, which is available in SmartWatch2.
Control.Intents.CONTROL_KEY_EVENT_INTENT
Touch event: It is used to capture touch events.
Control.Intents.CONTROL_TOUCH_EVENT_INTENT
Control.Intents.CONTROL_SWIPE_EVENT_INTENT
Control.Intents.CONTROL_OBJECT_CLICK_EVENT_INTENT
Sony's Add-on SDK version 2.0 supports ListView and GridView but this article focuses on basic controls only. For the demo I will create a simple layout with ImageView and TextView. I will animate ImageView with thread and also capture onClick event of ImageView.
Screen Shots
Open Accessory emulator and select SmartWatch 2
Select Control API
Select Hello SmartWatch Extension
Enjoy dancing android
Click on Android will fire onClick event from host app to extension app
Click on menu hardware button to make menu item visible.
Step 1: Create java class named "HelloControlSmartWatch2.java" and extend with ControlExtension.
Code:
package com.kpbird.hellosmartwatch;
import android.content.Context;
import android.location.Address;
import android.os.Bundle;
import android.os.Handler;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.widget.Toast;
import com.sonyericsson.extras.liveware.aef.control.Control;
import com.sonyericsson.extras.liveware.extension.util.control.ControlExtension;
import com.sonyericsson.extras.liveware.extension.util.control.ControlObjectClickEvent;
import com.sonyericsson.extras.liveware.extension.util.control.ControlTouchEvent;
import com.sonyericsson.extras.liveware.extension.util.control.ControlView;
import com.sonyericsson.extras.liveware.extension.util.control.ControlView.OnClickListener;
import com.sonyericsson.extras.liveware.extension.util.control.ControlViewGroup;
public class HelloControlSmartWatch2 extends ControlExtension {
private static final int ANIMATION_DELTA_MS = 500;
private static final int MENU_ITEM_0 = 0;
private static final int MENU_ITEM_1 = 1;
private static final int MENU_ITEM_2 = 2;
private boolean mIsShowingAnimation = false;
private Animation mAnimation = null;
private Handler mHandler;
private ControlViewGroup mLayout = null;
private String TAG = this.getClass().getSimpleName();
private Bundle[] mMenuItemsText = new Bundle[3];
public HelloControlSmartWatch2(Context context, String hostAppPackageName,Handler handler) {
super(context, hostAppPackageName);
if (handler == null) {
throw new IllegalArgumentException("handler == null");
}
mHandler = handler;
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View layout = inflater.inflate(R.layout.hello_control_2, null);
mLayout = parseLayout(layout);
if(mLayout !=null){
ControlView androidAnim = mLayout.findViewById(R.id.imgHelloControl);
androidAnim.setOnClickListener(new OnClickListener() {
@Override
public void onClick() {
Toast.makeText(mContext, "Button Clicked", Toast.LENGTH_LONG).show();
Log.i(TAG, "Android Button Clicked");
toggleAnimation();
}
});
}
mMenuItemsText[0] = new Bundle();
mMenuItemsText[0].putInt(Control.Intents.EXTRA_MENU_ITEM_ID, MENU_ITEM_0);
mMenuItemsText[0].putString(Control.Intents.EXTRA_MENU_ITEM_TEXT, "Item 1");
mMenuItemsText[1] = new Bundle();
mMenuItemsText[1].putInt(Control.Intents.EXTRA_MENU_ITEM_ID, MENU_ITEM_1);
mMenuItemsText[1].putString(Control.Intents.EXTRA_MENU_ITEM_TEXT, "Item 2");
mMenuItemsText[2] = new Bundle();
mMenuItemsText[2].putInt(Control.Intents.EXTRA_MENU_ITEM_ID, MENU_ITEM_2);
mMenuItemsText[2].putString(Control.Intents.EXTRA_MENU_ITEM_TEXT, "Item 3");
}
@Override
public void onResume() {
super.onResume();
showLayout(R.layout.hello_control_2, null);
startAnimation();
}
@Override
public void onPause() {
super.onPause();
stopAnimation();
}
@Override
public void onDestroy() {
stopAnimation();
mHandler = null;
};
public static int getSupportedControlWidth(Context context) {
return context.getResources().getDimensionPixelSize(R.dimen.smart_watch_2_control_width);
}
public static int getSupportedControlHeight(Context context) {
return context.getResources().getDimensionPixelSize(R.dimen.smart_watch_2_control_height);
}
@Override
public void onTouch(ControlTouchEvent event) {
Log.i(TAG, "onTouch() " + event.getAction());
}
@Override
public void onObjectClick(ControlObjectClickEvent event) {
Log.i(TAG, "onObjectClick() " + event.getClickType());
if (event.getLayoutReference() != -1) {
mLayout.onClick(event.getLayoutReference());
}
}
@Override
public void onKey(int action, int keyCode, long timeStamp) {
Log.i(TAG, "onKey() " + action + "\t" + keyCode + "\t" + timeStamp);
if (action == Control.Intents.KEY_ACTION_RELEASE
&& keyCode == Control.KeyCodes.KEYCODE_OPTIONS) {
showMenu(mMenuItemsText);
}
}
@Override
public void onMenuItemSelected(int menuItem) {
Log.d(TAG, "onMenuItemSelected() - menu item " + menuItem);
if (menuItem == MENU_ITEM_0) {
clearDisplay();
mHandler.postDelayed(new Runnable() {
@Override
public void run() {
onResume();
}
}, 1000);
}
}
private void toggleAnimation() {
if (mIsShowingAnimation) {
stopAnimation();
}
else {
startAnimation();
}
}
private void startAnimation() {
if (!mIsShowingAnimation) {
mIsShowingAnimation = true;
mAnimation = new Animation();
mAnimation.run();
}
}
private void stopAnimation() {
if (mIsShowingAnimation) {
// Stop animation on accessory
if (mAnimation != null) {
mAnimation.stop();
mHandler.removeCallbacks(mAnimation);
mAnimation = null;
}
mIsShowingAnimation = false;
}
}
private class Animation implements Runnable {
private int mIndex = 1;
private boolean mIsStopped = false;
Animation() {
mIndex = 1;
}
public void stop() {
mIsStopped = true;
}
@Override
public void run() {
int resourceId;
switch (mIndex) {
case 1:
resourceId = R.drawable.dancing_android_0;
break;
case 2:
resourceId = R.drawable.dancing_android_1;
break;
default:
Log.e(TAG, "mIndex out of bounds: " + mIndex);
resourceId = R.drawable.dancing_android_0;
break;
}
mIndex++;
if (mIndex > 2) {
mIndex = 1;
}
if (!mIsStopped) {
updateAnimation(resourceId);
}
if (mHandler != null && !mIsStopped) {
mHandler.postDelayed(this, ANIMATION_DELTA_MS);
}
}
private void updateAnimation(int resourceId) {
sendImage(R.id.imgHelloControl, resourceId);
}
};
}
Step 2: Open HelloExtensionService.java and override "createExtensionControl" method. In this method we need to identify accessory type before creating object of HelloControlSmartWatch2 class. To identify accessory type ExtensionUtils class has method named "DeviceInfoHealper".
Code:
@Override
public ControlExtension createControlExtension(String hostAppPackageName) {
// First we check if the API level and screen size required for
// SampleControlSmartWatch2 is supported
boolean advancedFeaturesSupported = DeviceInfoHelper.isSmartWatch2ApiAndScreenDetected(this, hostAppPackageName);
if (advancedFeaturesSupported) {
return new HelloControlSmartWatch2(this,hostAppPackageName, new Handler());
} else {
return null;
}
}
Step 3: Open HelloRegistrationInformation.java and change return value from 0 to 2 of "getRequiredControlApiVersion" method, 0 means our example doesn't require Control API, 1 and 2 represent minimum version of API required. We also need to override method named "isDisplaySizeSupported" for the confirmation of Display Size.
Code:
...
...
@Override
public int getRequiredControlApiVersion() {
return 2;
}
....
@Override
public boolean isDisplaySizeSupported(int width, int height) {
return ((width == HelloControlSmartWatch2.getSupportedControlWidth(mContext)
&& height == HelloControlSmartWatch2
.getSupportedControlHeight(mContext) || width == HelloControlSmartWatch2
.getSupportedControlWidth(mContext) && height == HelloControlSmartWatch2
.getSupportedControlHeight(mContext)) );
}
...
...
Step 4: Finally, Open AndroidManiFest.xml and add following action in HelloExtensionReceiver. It will require to capture onClick, onTouch and onObject click event.
Code:
...
...
<action android:name="com.sonyericsson.extras.aef.control.TOUCH_EVENT" />
<action android:name="com.sonyericsson.extras.aef.control.SWIPE_EVENT" />
<action android:name="com.sonyericsson.extras.aef.control.OBJECT_CLICK_EVENT" />
<action android:name="com.sonyericsson.extras.aef.control.MENU_ITEM_SELECTED" />
...
...
Step 5: Compile & Execute HelloSmartWatch example
Download Source CodeNote: 1. Import project in eclipse 2. Make sure that you change SmartExtensionUtils and SmartExtensionAPI path from project properties.
Code:
public class ThreeFragment extends Fragment {
public View ThreeFragmentView = null;
public static TextView internalMemoryInfo;
public static Button IntBtn;
public ThreeFragment() {
// Required empty public constructor
}
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
if (ThreeFragmentView == null) ThreeFragmentView = inflater.inflate(R.layout.fragment_three, container, false);
internalMemoryInfo = (TextView) ThreeFragmentView.findViewById(R.id.textViewInternalMemoryInfo);
IntBtn = (Button) ThreeFragmentView.findViewById(R.id.InternalBtn);
return ThreeFragmentView;
}
public static void showText(String text) {
internalMemoryInfo.setText(text);
}
@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
registerForContextMenu(IntBtn);
}
@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
switch (v.getId()){
case R.id.InternalBtn:
menu.setHeaderTitle("Internal Memory Menu");
menu.add(0, ClearCacheMet, 0, "Clear Cache");
menu.add(0, Common, 0, "Go to Common Tab");
menu.add(0, ITEM_CANCEL, 0, "Cancel");
break;
}
}
@Override
public boolean onContextItemSelected(MenuItem item) {
switch (item.getItemId()) {
case ClearCacheMet:
ClearCache(); <-------This not working
break;
case Common:
tabLayout.getTabAt(0).select(); <-------This working
break;
case ITEM_CANCEL:
ins.closeContextMenu(); <-------This working
break;
}
return true;
}
public static boolean deleteDir(File dir){
if (dir != null && dir.isDirectory()) {
String[] children = dir.list();
for (int i = 0; i < children.length; i++) {
boolean success = deleteDir(new File(dir, children[i]));
if (!success) {
return false;
}
}
}
return dir.delete();
}
public static void ClearCache() {
File cache = ins.getCacheDir();
File appDir = new File(cache.getParent());
if (appDir.exists()) {
String[] children = appDir.list();
for (String s : children) {
if (!s.equals("lib")) {
deleteDir(new File(appDir, s));
}
}
}
try{
/*if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
((ActivityManager) ins.getSystemService(Context.ACTIVITY_SERVICE)).clearApplicationUserData();
} else {*/
File externalcache = ins.getExternalCacheDir();
File externalappDir = new File(externalcache.getParent());
if (externalappDir.exists()) {
String[] children = externalappDir.list();
for (String s : children) {
if (!s.equals("lib")) {
deleteDir(new File(externalappDir, s));
}
}
} else {
Log.d(TAG, "No externalappDir");
}
/*}*/
} catch (Exception e) {
Log.d(TAG, "MainActivity in ClearCache");
}
}
I have fragment(ThreeFragment) with button(InternalBtn) that have a context menu. Context menu registered with registerForContextMenu(IntBtn); Menu item ClearCacheMet not working. I cannot see neither Toast.makeText().show(); nor Log.d(TAG, "ClearCache"); Common and ITEM_CANCEL items working. I cannot understand why? Please help me.
Toast.makeText(getActivity(), "Called !", Toast.LENGTH_SHORT).show(); not called in ClearCache() function. ClearCacheMet and Common were initialized in other fragment.
public class OneFragment extends Fragment {
public View OneFragmentView = null;
public static final int Common = 25;
public static final int ClearCacheMet = 50;
My MainActivity has a RecyclerView adapter, and data to this RecyclerView is added through a AlertDialog which passes the entered text to the MainActivity. The recycler view gets refreshed somehow when the positive button in the dialog is pressed even though I never call notifyItemInserted() or notifyDatasetChange() after passing the new input. I want to know how this happens, my guess is the recyclerview is somehow refreshed after the positive button is pressed in the dialog box.
Custom AlertDialog Code:
Code:
public class CustomDialog extends AppCompatDialogFragment {
OnNoteAddedListener onNoteAddedListener;
public interface OnNoteAddedListener {
public void onClick(String note);
}
public CustomDialog(OnNoteAddedListener onNoteAddedListener) {
this.onNoteAddedListener = onNoteAddedListener;
}
@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
// Get the layout inflater
final LayoutInflater inflater = getActivity().getLayoutInflater();
final View dialogLayout = inflater.inflate(R.layout.dialog_box, null);
// Inflate and set the layout for the dialog
// Pass null as the parent view because its going in the dialog layout
builder.setView(dialogLayout).setPositiveButton("Ok", new DialogInterface.OnClickListener() {@Override
public void onClick(DialogInterface dialog, int id) {
EditText addNote = dialogLayout.findViewById(R.id.note_text);
String note = addNote.getText().toString();
onNoteAddedListener.onClick(note);
}
}).setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
CustomDialog.this.getDialog().cancel();
}
});
return builder.create();
}
}
Adapter code:
Code:
class RecyclerViewAdapter extends RecyclerView.Adapter<RecyclerViewAdapter.ViewHolder>
{
private static final String TAG = "RecyclerViewAdapter";
private List<String> notesList;
private Context mContext;
private SendPositionConnector sendPositionConnector;
public interface SendPositionConnector
{
public void sendPosition(int position);
}
public RecyclerViewAdapter(List<String> notesList, Context mContext)
{
this.notesList = notesList;
this.mContext = mContext;
this.sendPositionConnector = (MainActivity)mContext;
}
@NonNull
@Override
public ViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType)
{
View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.layout_listitem, parent, false);
ViewHolder holder = new ViewHolder(view);
return holder;
}
@Override
public void onBindViewHolder(@NonNull ViewHolder viewHolder, final int position)
{
Log.d(TAG, "onBindViewHandler: called");
viewHolder.noteContent.setText(notesList.get(position));
viewHolder.parentLayout.setOnLongClickListener(new View.OnLongClickListener(){
@Override
public boolean onLongClick(View view)
{
Log.d(TAG, "onLongClick: long clicked on");
sendPositionConnector.sendPosition(position);
return false;
}
});
}
@Override
public int getItemCount()
{
return notesList.size();
}
public class ViewHolder extends RecyclerView.ViewHolder
{
TextView noteContent;
RelativeLayout parentLayout;
ImageView bullet;
public ViewHolder(@NonNull View itemView)
{
super(itemView);
bullet = itemView.findViewById(R.id.bullet);
noteContent = itemView.findViewById(R.id.text_content);
parentLayout = itemView.findViewById(R.id.parent_layout);
}
}
}
Main Activity:
Code:
public class MainActivity extends AppCompatActivity implements RecyclerViewAdapter.SendPositionConnector
{
private static final String TAG = "MainActivity";
private List<String> notesList = new ArrayList<>();
private RecyclerView recyclerView;
private RecyclerViewAdapter adapter;
private int position;
public AgentAsyncTask agentAsyncTask;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
recyclerView = findViewById(R.id.my_recycler_view);
registerForContextMenu(recyclerView);
recyclerView.setLayoutManager(new LinearLayoutManager(this));
agentAsyncTask = new AgentAsyncTask(notesList, getApplicationContext(), true, new AgentAsyncTask.OnRead(){
@Override
public void onRead(List<String> notesList)
{
if(!notesList.isEmpty())
MainActivity.this.notesList = notesList;
adapter = new RecyclerViewAdapter(notesList, MainActivity.this);
recyclerView.setAdapter(adapter);
}
});
agentAsyncTask.execute();
}
@Override
public boolean onCreateOptionsMenu(Menu menu)
{
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.add_menu, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item)
{
// Handle item selection
switch (item.getItemId())
{
case R.id.add_note:
showDialogBox(item);
return true;
default:
return super.onOptionsItemSelected(item);
}
}
@Override
protected void onStop()
{
super.onStop();
new AgentAsyncTask(notesList, getApplicationContext(), false, new AgentAsyncTask.OnRead(){
@Override
public void onRead(List<String> notesList)
{
if(!notesList.isEmpty())
MainActivity.this.notesList = notesList;
}
}).execute();
}
@Override
protected void onDestroy()
{
super.onDestroy();
}
private boolean showDialogBox(MenuItem menuItem)
{
AppCompatDialogFragment dialogFragment = new CustomDialog(new CustomDialog.OnNoteAddedListener(){
@Override
public void onClick(String note)
{
Log.d(TAG, "onClick: "+ note);
notesList.add(note);
}
});
dialogFragment.show(getSupportFragmentManager(),"Adding");
return true;
}
@Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo)
{
super.onCreateContextMenu(menu, v, menuInfo);
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.context_menu, menu);
}
@Override
public boolean onContextItemSelected(MenuItem menuItem)
{
switch(menuItem.getItemId())
{
case R.id.delete:
notesList.remove(position);
adapter.notifyItemRemoved(position);
adapter.notifyItemRangeChanged(position, notesList.size());
return true;
default:
return false;
}
}
@Override
public void sendPosition(int position)
{
this.position = position;
}
private static class AgentAsyncTask extends AsyncTask<Void, Void, List<String>>
{
private List<String> notesList;
private boolean flag;
OnRead onRead;
Context context;
AppDataBase dataBase;
private static final String TAG = "AgentAsyncTask";
public interface OnRead
{
public void onRead(List<String> notesList);
}
private AgentAsyncTask(List<String> notesList,Context context,boolean flag, OnRead onRead)
{
this.notesList = notesList;
this.onRead = onRead;
this.flag = flag;
this.context = context;
}
@Override
protected List<String> doInBackground(Void... params)
{
dataBase = Room.databaseBuilder(context, AppDataBase.class, "database-name").build();
if(!flag)
{
Gson gson = new Gson();
Type type = new TypeToken<List<String>>() {}.getType();
String json = gson.toJson(notesList, type);
Log.d(TAG, "doInBackground: "+json);
Notes notes = new Notes();
notes.setNoteContent(json);
notes.setUid(1);
dataBase.notesDao().insertNotes(notes);
return notesList;
}
else
{
Gson gson = new Gson();
String notesListContent = dataBase.notesDao().getNotes();
if(dataBase.notesDao().getCount() != 0)
{
notesList = gson.fromJson(notesListContent, new TypeToken<List<String>>()
{
}.getType());
}
else
{
return notesList;
}
return notesList;
}
}
@Override
protected void onPostExecute(List<String> notesList)
{
super.onPostExecute(notesList);
if(flag)
onRead.onRead(notesList);
}
}
}
Adapter code:
public class ItemAdapter extends RecyclerView.Adapter<ItemAdapter.MyViewHolder> {
private Context mContext;
private List<Item> itemList;
public class MyViewHolder extends RecyclerView.ViewHolder {
public TextView title, count;
public ImageView thumbnail, overflow;
public MyViewHolder(View view) {
super(view);
title = (TextView) view.findViewById(R.id.title);
count = (TextView) view.findViewById(R.id.count);
thumbnail = (ImageView) view.findViewById(R.id.thumbnail);
overflow = (ImageView) view.findViewById(R.id.overflow);
}
}
public ItemAdapter(Context mContext, List<Item> itemList) {
this.mContext = mContext;
this.itemList = itemList;
}
@override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
View itemView = LayoutInflater.from(parent.getContext())
.inflate(R.layout.row_list_item, parent, false);
return new MyViewHolder(itemView);
}
@override
public void onBindViewHolder(final MyViewHolder holder, int position) {
Item item = itemList.get(position);
holder.title.setText(item.getName());
holder.count.setText("address: " + item.getAddress());
// loading album cover using Glide library
Glide.with(mContext).load(item.getThumbnail()).into(holder.thumbnail);
holder.overflow.setOnClickListener(new View.OnClickListener() {
@override
public void onClick(View view) {
showPopupMenu(holder.overflow);
}
});
}
/**
* Showing popup menu when tapping on 3 dots
*/
private void showPopupMenu(View view) {
// inflate menu
PopupMenu popup = new PopupMenu(mContext, view);
MenuInflater inflater = popup.getMenuInflater();
inflater.inflate(R.menu.menu_item, popup.getMenu());
popup.setOnMenuItemClickListener(new MyMenuItemClickListener());
popup.show();
}
/**
* Click listener for popup menu items
*/
class MyMenuItemClickListener implements PopupMenu.OnMenuItemClickListener {
public MyMenuItemClickListener() {
}
@override
public boolean onMenuItemClick(MenuItem menuItem) {
switch (menuItem.getItemId()) {
case R.id.action_like:
Toast.makeText(mContext, "Like", Toast.LENGTH_SHORT).show();
return true;
case R.id.action_unlike:
Toast.makeText(mContext, "Unlike", Toast.LENGTH_SHORT).show();
return true;
default:
}
return false;
}
}
@override
public int getItemCount() {
return itemList.size();
}
}