Develop Reference

setVisibility is not working in DrawerNavigation

I am using a NavigationView in drawer and there is a item in the Menu which has app:actionLayout property directing to a LinearLayout containing a TextView, and the TextView has property android:visibility="invisible". I want this textview to be visible when click on that item in Menu. but it is not working, i have added a Toast to check if click listener is working or not and find click listener is working but that textView is not being visible.
Here is click Listener (Activity layout name is: main_activity.xml):
navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem item) {
switch (item.getItemId()){
case R.id.nav_kitchen_key:
View kitchenKeyLayout = getLayoutInflater().inflate(R.layout.nav_kitchen_key, null);
TextView kitchenKeyTextView = (TextView)kitchenKeyLayout.findViewById(R.id.show_kitchen_key);
kitchenKeyTextView.setVisibility(View.VISIBLE);
break;
}
return true;
}
});
Here is the Menu item :
<item
android:id="#+id/nav_kitchen_key"
android:title="Kitchen Key"
android:icon="#drawable/if_key"
app:actionLayout="#layout/nav_kitchen_key" />
The property of menu item app:actionLayout directing to nav_kitchen_key.xml and here is nav_kitchen_key.xml:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center_vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/show_kitchen_key"
android:textColor="#color/white"
android:text="2592"
android:visibility="invisible"
android:background="#drawable/kitchen_key_background"/>
</LinearLayout>

You should not create new View, you should get from MenuItem, MenuItem.getActionView()
navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem item) {
switch (item.getItemId()){
case R.id.nav_kitchen_key:
LinearLayout kitchenKeyLayout = (LinearLayout) item.getActionView();
TextView kitchenKeyTextView = (TextView)kitchenKeyLayout.findViewById(R.id.show_kitchen_key);
kitchenKeyTextView.setVisibility(View.VISIBLE);
break;
}
return true;
}
});

You get a view from getActionView
LinearLayout kitchenKeyLayout = (LinearLayout) item.getActionView();
// This returns the container layout
TextView kitchenKeyTextView = (TextView)kitchenKeyLayout.findViewById(R.id.show_kitchen_key);
kitchenKeyTextView.setVisibility(View.VISIBLE);
kitchenKeyTextView.setVisibility(View.VISIBLE);

Click event not working in android action bar item

I am trying to make a shopping cart android app and i want to show the cart with number of items.
attaching the screenshot of app below .
When clicking on the cart icon its does not going any where.. :(.
here is my code.
MainActivity.java
public class PandaActivity extends ActionBarActivity {
TextView notifCount;
RelativeLayout count;
int mNotifCount = 0;
protected ActionBar actionBar;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
actionBar = getSupportActionBar();
actionBar.setHomeButtonEnabled(true);
actionBar.setDisplayShowCustomEnabled(true);
actionBar.setBackgroundDrawable(getResources().getDrawable(R.drawable.topbar));
actionBar.setHomeAsUpIndicator(getResources().getDrawable(R.drawable.backbutton));
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_panda, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
if (item.getItemId() == R.id.badge) {
Intent cartIntent=new Intent(getApplicationContext(),CartShowActivity.class);
startActivity(cartIntent);
return true;
}
return super.onOptionsItemSelected(item);
}
}
menu_panda.xml
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
tools:context="com.sha.netstager.pandafoods.activity.PandaActivity">
<item
android:title="demo"
android:id="#+id/badge"
app:actionLayout="#layout/feed_update_count"
app:showAsAction="always">
</item>
</menu>
feed_update_count.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="48dp"
android:layout_height="fill_parent"
android:layout_gravity="right">
<!-- Menu Item Image -->
<ImageView
android:layout_width="48dp"
android:layout_height="fill_parent"
android:clickable="true"
android:src="#drawable/cart" />
<!-- Badge Count -->
<TextView
android:id="#+id/actionbar_notifcation_textview"
android:layout_width="18dp"
android:layout_marginRight="4dp"
android:layout_height="22dp"
android:layout_alignParentRight="true"
android:text="99"
android:textSize="16dp"
android:background="#f7134e"
android:textColor="#fff"/>
</RelativeLayout>
I tried many ways to solve this problem with onclick methord and some others. but dont know what is the error is happening here.
There is no messages or warnings in logcat when I click on the menu item in action bar.
Many Thanks..

Try to add onclick in your onCreateOptionsMenu, instead of current solution as given below.
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu, menu);
RelativeLayout rl_viewBag = (RelativeLayout) menu.findItem(R.id.badge).getActionView();
txt_bagCount = (TextView)rl_viewBag.findViewById(R.id.actionbar_notifcation_textview);
txt_bagCount.setText("10");
rl_viewBag.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Intent cartIntent=new Intent(getApplicationContext(),CartShowActivity.class);
startActivity(cartIntent);
}
});
return true;
}

for better look of actionbar use extends AppCompatActivity this is the same look and feel will be provided which is been used by gmail.

Show copy/paste context menu on text using code android

I have an EditText and its text gets selected from through code. But I want to allow users to cut/copy the selected text. However, the cut/copy context menu doesn't appear until user long presses on text. But then it loses the actual selection. So, I'm thinking to show the context menu as the text get selected by the code.
I tried this inside onFocusChanged, but nothing appeared.
openContextMenu(EditText);

IF I follow you usecase correctly, you can open context menu from the onFocusChangeListener registered on the testedEditText.
I prepared some small test for that which seems to be correctly supporting your usecase.
You need to openMenu on the hooks which are selecting the content in the EditText.
public class Main extends Activity {
private EditText testedEditText;
private Button selectingButton;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
selectingButton = (Button) findViewById(R.id.button);
testedEditText = (EditText) findViewById(R.id.textView);
registerForContextMenu(testedEditText);
selectingButton.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
testedEditText.setSelection(6, 11);
openContextMenu(testedEditText);
}
});
}
#Override
public void onCreateContextMenu(ContextMenu menu, View v, ContextMenu.ContextMenuInfo menuInfo) {
super.onCreateContextMenu(menu, v, menuInfo);
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.cmenu, menu);
}
#Override
public boolean onContextItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.select_all:
return true;
case R.id.copy:
//do something
return true;
case R.id.cut:
//do something
return true;
case R.id.paste:
//do something
return true;
default:
return super.onContextItemSelected(item);
}
}
}
Weirdly enough registering testedEditText.requestFocus(), and setting onFocusChangedListener for EditText was not enough.
Additional xml files for reference:
cmenu.xml
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item android:id="#+id/select_all"
android:title="select all"
/>
<item android:id="#+id/copy"
android:title="copy"
/>
<item android:id="#+id/cut"
android:title="cut"
/>
<item android:id="#+id/paste"
android:title="paste"
/>
</menu>
main.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<EditText android:id="#+id/textView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hello World, Initial Text..."
android:layout_centerInParent="true"
/>
<Button android:id="#+id/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"
android:text="button"
/>
</RelativeLayout>

Action Bar change effect

I'm trying to reproduce the Google Keep, Gmail, etc ActionBar change effects.
Like image bellow, when the user select a note or a mail, the action bar changes using its effects.
I would like to do the same.
Any help?

Looks like it's relatively new ability, called Contextual action mode.
Simply put, it's just specific 'context' menu for long-selected item. I think that the link above provides enough information. However, below is some simple example on how to use it:
main.xml:
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="match_parent"
android:layout_width="match_parent"
android:clipChildren="false"
android:id="#+id/root">
<Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/button"
android:text="Do Long Press"
android:layout_centerHorizontal="true"
android:layout_alignParentTop="true"
android:layout_marginTop="5dp" />
</RelativeLayout>
context_menu.xml:
<menu xmlns:android="http://schemas.android.com/apk/res/android">
<item android:icon="#android:drawable/ic_menu_close_clear_cancel"
android:title="close"
android:showAsAction="always"
android:id="#+id/close_menu" />
</menu>
MyActivity.java:
public class MyActivity extends Activity implements ActionMode.Callback {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
findViewById(R.id.button).setOnLongClickListener(new View.OnLongClickListener() {
#Override
public boolean onLongClick(final View v) {
startActionMode(MyActivity.this);
return true;
}
});
}
#Override
public boolean onCreateActionMode(final ActionMode mode, final Menu menu) {
// Inflate a menu resource providing context menu items
MenuInflater inflater = mode.getMenuInflater();
inflater.inflate(R.menu.context_menu, menu);
return true;
}
#Override
public boolean onPrepareActionMode(final ActionMode mode, final Menu menu) {
// TODO: auto-generated block
return false;
}
#Override
public boolean onActionItemClicked(final ActionMode mode, final MenuItem item) {
switch (item.getItemId()) {
case R.id.close_menu:
mode.finish(); // Action picked, so close the CAB
return true;
default:
return false;
}
}
#Override
public void onDestroyActionMode(final ActionMode mode) {
// TODO: auto-generated block
}
}
It looks like the following:
Execute Long press
Please note, that V item is default one and in context_menu.xml I've provided only X item.

Android custom dropdown/popup menu

How do I do a custom dropdown/popup menu anchored to a button?
I need it to work like the popup menu (anchored to a view), and do something when I click an item from the menu.
How do I add items to the menu by code, keeping menu's height and make it scrollable if there are more than 5 items. I don't need to add any images, just text.

Update: To create a popup menu in android with Kotlin refer my answer here.
To create a popup menu in android with Java:
Create a layout file activity_main.xml under res/layout directory which contains only one button.
Filename: activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="#dimen/activity_vertical_margin"
android:paddingLeft="#dimen/activity_horizontal_margin"
android:paddingRight="#dimen/activity_horizontal_margin"
android:paddingTop="#dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<Button
android:id="#+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginLeft="62dp"
android:layout_marginTop="50dp"
android:text="Show Popup" />
</RelativeLayout>
Create a file popup_menu.xml under res/menu directory
It contains three items as shown below.
Filename: poupup_menu.xml
<menu xmlns:android="http://schemas.android.com/apk/res/android" >
<item
android:id="#+id/one"
android:title="One"/>
<item
android:id="#+id/two"
android:title="Two"/>
<item
android:id="#+id/three"
android:title="Three"/>
</menu>
MainActivity class which displays the popup menu on button click.
Filename: MainActivity.java
public class MainActivity extends Activity {
private Button button1;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button1 = (Button) findViewById(R.id.button1);
button1.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
//Creating the instance of PopupMenu
PopupMenu popup = new PopupMenu(MainActivity.this, button1);
//Inflating the Popup using xml file
popup.getMenuInflater()
.inflate(R.menu.popup_menu, popup.getMenu());
//registering popup with OnMenuItemClickListener
popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
public boolean onMenuItemClick(MenuItem item) {
Toast.makeText(
MainActivity.this,
"You Clicked : " + item.getTitle(),
Toast.LENGTH_SHORT
).show();
return true;
}
});
popup.show(); //showing popup menu
}
}); //closing the setOnClickListener method
}
}
To add programmatically:
PopupMenu menu = new PopupMenu(this, view);
menu.getMenu().add("One");
menu.getMenu().add("Two");
menu.getMenu().add("Three");
menu.show();
Follow this link for creating menu programmatically.

I know this is an old question, but I've found another answer that worked better for me and it doesn't seem to appear in any of the answers.
Create a layout xml:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="5dip"
android:paddingBottom="5dip"
android:paddingStart="10dip"
android:paddingEnd="10dip">
<ImageView
android:id="#+id/shoe_select_icon"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_gravity="center_vertical"
android:scaleType="fitXY" />
<TextView
android:id="#+id/shoe_select_text"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:textSize="20sp"
android:paddingStart="10dp"
android:paddingEnd="10dp"/>
</LinearLayout>
Create a ListPopupWindow and a map with the content:
ListPopupWindow popupWindow;
List<HashMap<String, Object>> data = new ArrayList<>();
HashMap<String, Object> map = new HashMap<>();
map.put(TITLE, getString(R.string.left));
map.put(ICON, R.drawable.left);
data.add(map);
map = new HashMap<>();
map.put(TITLE, getString(R.string.right));
map.put(ICON, R.drawable.right);
data.add(map);
Then on click, display the menu using this function:
private void showListMenu(final View anchor) {
popupWindow = new ListPopupWindow(this);
ListAdapter adapter = new SimpleAdapter(
this,
data,
R.layout.shoe_select,
new String[] {TITLE, ICON}, // These are just the keys that the data uses (constant strings)
new int[] {R.id.shoe_select_text, R.id.shoe_select_icon}); // The view ids to map the data to
popupWindow.setAnchorView(anchor);
popupWindow.setAdapter(adapter);
popupWindow.setWidth(400);
popupWindow.setOnItemClickListener(new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
switch (position){
case 0:
devicesAdapter.setSelectedLeftPosition(devicesList.getChildAdapterPosition(anchor));
break;
case 1:
devicesAdapter.setSelectedRightPosition(devicesList.getChildAdapterPosition(anchor));
break;
default:
break;
}
runOnUiThread(new Runnable() {
#Override
public void run() {
devicesAdapter.notifyDataSetChanged();
}
});
popupWindow.dismiss();
}
});
popupWindow.show();
}

The Kotlin Way
fun showPopupMenu(view: View) {
PopupMenu(view.context, view).apply {
menuInflater.inflate(R.menu.popup_men, menu)
setOnMenuItemClickListener { item ->
Toast.makeText(view.context, "You Clicked : " + item.title, Toast.LENGTH_SHORT).show()
true
}
}.show()
}
UPDATE: In the above code, the apply function returns this which is not required, so we can use run which don't return anything and to make it even simpler we can also remove the curly braces of showPopupMenu method.
Even Simpler:
fun showPopupMenu(view: View) = PopupMenu(view.context, view).run {
menuInflater.inflate(R.menu.popup_men, menu)
setOnMenuItemClickListener { item ->
Toast.makeText(view.context, "You Clicked : ${item.title}", Toast.LENGTH_SHORT).show()
true
}
show()
}

First, create a folder named “menu” in the “res” folder.
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android" >
<item
android:id="#+id/search"
android:icon="#android:drawable/ic_menu_search"
android:title="Search"/>
<item
android:id="#+id/add"
android:icon="#android:drawable/ic_menu_add"
android:title="Add"/>
<item
android:id="#+id/edit"
android:icon="#android:drawable/ic_menu_edit"
android:title="Edit">
<menu>
<item
android:id="#+id/share"
android:icon="#android:drawable/ic_menu_share"
android:title="Share"/>
</menu>
</item>
</menu>
Then, create your Activity Class:
public class PopupMenu1 extends Activity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.popup_menu_1);
}
public void onPopupButtonClick(View button) {
PopupMenu popup = new PopupMenu(this, button);
popup.getMenuInflater().inflate(R.menu.popup, popup.getMenu());
popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
public boolean onMenuItemClick(MenuItem item) {
Toast.makeText(PopupMenu1.this,
"Clicked popup menu item " + item.getTitle(),
Toast.LENGTH_SHORT).show();
return true;
}
});
popup.show();
}
}