Develop Reference

open a menu from OnClickListener

I want to open a menu from a OnClickListener
without using the method onCreateOptionsMenu
My code:
toolbar.setNavigationIcon(R.drawable.week); //your icon
toolbar.setNavigationOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v ) {
}
});
Thanks in advance!

I think you want to show/hide a menu item based on actions from users. To do that you must use onCreateOptionsMenu and whenever you want to show/hide the menu item, then call invalidateOptionsMenu (this method will call onCreateOptionsMenu again).
boolean mShowMenu = false;
#Override
public boolean onCreateOptionsMenu(Menu menu)
{
getMenuInflater().inflate(R.menu.your_menu, menu);
MenuItem item = menu.findItem(R.id.your_menu_item);
item.setVisible(showMenu);
return true;
}
And in your code, when you want to show menu item.
toolbar.setNavigationIcon(R.drawable.week); //your icon
toolbar.setNavigationOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v ) {
mShowMenu = true;
invalidateOptionsMenu();
}
});
And give it a try.

You should need to create menu Interface in xml File Like this
<item
android:id="#+id/settings"
android:title="Setting"
app:showAsAction="never" />
<item
android:id="#+id/my_activity"
android:title="My Activity"
app:showAsAction="always"
android:icon="#android:drawable/btn_radio"/>
After that in the Java code of a particular class You need to create the code like this;
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.my_activity) {
Intent intent1 = new Intent(this,MyActivity.class);
this.startActivity(intent1);
return true;
}
if (id == R.id.settings) {
Toast.makeText(this, "Setting", Toast.LENGTH_LONG).show();
return true;
}
return super.onOptionsItemSelected(item);
}
Hopefully this may resolve your problem

Android not showing menu

I'm a new one in Android. I have some problems with showing menu. I don't see three dots in right corner in my screen. Please, help me to understand my mistake. THANK YOU A LOT!
Activity:
public class MainActivity extends AppCompatActivity {
private EditText numb1;
private EditText numb2;
private Button btn_sum;
private Button btn_extr;
private Button btn_mult;
private Button btn_div;
private TextView result;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
/*some code*/
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch(item.getItemId()) {
case R.id.reset:
numb1.setText("");
numb2.setText("");
break;
case R.id.exit:
fileList();
break;
}
return super.onOptionsItemSelected(item);
}
}
xml:
<?xml version="1.0" encoding="utf-8"?>
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item android:id="#+id/reset"
android:title="#string/reset"
app:showAsAction="never"/>
<item android:id="#+id/exit"
android:title="#string/exit"
app:showAsAction="never"/>
</menu>

Menu Items are not showing on Action Bar
Check this answer
<menu xmlns:android="http://schemas.android.com/apk/res/android" >
<item
android:id="#+id/action_settings"
android:orderInCategory="100"
android:showAsAction="ifRoom|withText"
android:title="#string/action_option1"/>
<item
android:id="#+id/action_settings34"
android:orderInCategory="100"
android:showAsAction="ifRoom|withText"
android:title="#string/action_option2"/>
<item
android:id="#+id/action_settings3"
android:orderInCategory="100"
android:showAsAction="ifRoom|withText"
android:title="#string/action_option3"/>
</menu>

Use this code in your activity, but you should have action bar in it.
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.your_menu, menu);
return true;
}

if you run your application on oldest version of samsung or other the three DOTS is not appear on ActionBar
so try to click on Option Key on mobile
The solution to appear Three DOTS
call this method in your application class' onCreate method
private void makeActionOverflowMenuShown() {
//devices with hardware menu button (e.g. Samsung Note) don't show action overflow menu
try {
ViewConfiguration config = ViewConfiguration.get(this);
Field menuKeyField = ViewConfiguration.class.getDeclaredField("sHasPermanentMenuKey");
if (menuKeyField != null) {
menuKeyField.setAccessible(true);
menuKeyField.setBoolean(config, false);
}
} catch (Exception e) {
Log.d(TAG, e.getLocalizedMessage());
}
}

i am also new to android i guess u wrote onCreateOptionsMenu(Menu menu) inside on create
try this
public class MainActivity extends AppCompatActivity {
private EditText numb1;
private EditText numb2;
private Button btn_sum;
private Button btn_extr;
private Button btn_mult;
private Button btn_div;
private TextView result;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
/*some code*/
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.reset:
numb1.setText("");
numb2.setText("");
break;
case R.id.exit:
fileList();
break;
}
return super.onOptionsItemSelected(item);
}
}

You have done the minor mistake while creating the option menu .you should call the onCreateOptionsMenu() and onOptionsItemSelected() method outside the onCreate(Bundle savedInstanceState) method. you may check the following example :
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch(item.getItemId()) {
case R.id.reset:
break;
case R.id.exit:
fileList();
break;
}
return super.onOptionsItemSelected(item);
} }

Help me to understand my mistake - Sure
The Main culprit is in your menu XML file app:showAsAction="never" this line replace this line with app:showAsAction="ifRoom"
here showAsAction is set to never means you tell that don't show my menu in action bar if you replace with "ifRoom" means you said show my all menu in action bar and if there is space for all my menus

Command of an item from the title bar into onCreate | Android

Does anybody knows how to put the code of an item from the titlebar into the onCreate?
The code is still so:
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.layout1);
// Here the code of the item should be
}
// But it's here:
#Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main3, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.item1) {
// Command
return true;
}
return super.onOptionsItemSelected(item);
}
Thanks for help!

Android webview fire custom CAB during longClick and Selection mode

I use this code to override webview Context Action Bar but during longclick the CAB appears but no text selection how can i only fire CAB when text selection mode?
public class MainActivity extends Activity {
ActionMode.Callback mCallback;
ActionMode mMode;
WebView webview;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
webview=webview = (WebView) findViewById(R.id.webView1);
webview.loadUrl("http://www.google.com");
webview.setOnLongClickListener(new OnLongClickListener() {
#TargetApi(Build.VERSION_CODES.HONEYCOMB)
#SuppressLint("NewApi")
#Override
public boolean onLongClick(View v) {
// TODO Auto-generated method stub
if (mMode != null)
return false;
else
mMode = startActionMode(mCallback);
return true;
}
});
mCallback = new ActionMode.Callback() {
#Override
public boolean onPrepareActionMode(ActionMode mode, Menu menu) {
return false;
}
#Override
public void onDestroyActionMode(ActionMode mode) {
mMode = null;
}
#SuppressLint("NewApi")
#Override
public boolean onCreateActionMode(ActionMode mode, Menu menu) {
mode.setTitle("1 selected");
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
#SuppressLint("NewApi")
#Override
public boolean onActionItemClicked(ActionMode mode, MenuItem item) {
switch (item.getItemId()) {
case R.id.action_settings:
Toast.makeText(getBaseContext(), "Selected Action1 ",
Toast.LENGTH_LONG).show();
mode.finish();
break;
}
return false;
}
};
}
}
during long press my custom CAB appear without text selection
how to make it appear only in the case of text selection?
many thanks

don't do this,it is not necessary to overwrite longClick, you should make your custom webview and do some thing that below link display:
Look At This Answer

Handling a Menu Item Click Event - Android

I want to create an intent that starts a new activity once a Menu Item is clicked, but I'm not sure how to do this. I've been reading through the android documentation, but my implementation isn't correct..and some guidance in the right direction would help. I've listed my code below and commented out my problem areas, I think I'm invoking the wrong method.
package com.jbsoft.SimpleFlashlight;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.*;
import android.view.MenuItem.OnMenuItemClickListener;
import android.widget.Button;
import android.widget.Toast;
public class SimpleFlashLightActivity extends Activity {
Button GreenButton; // Declare instances of buttons to use later
Button BlueButton;
private static final int OK_MENU_ITEM = Menu.FIRST;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
BlueButton = (Button) findViewById(R.id.bluebutton);
BlueButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
//Display msg when user clicks Blue Button
showColorChangeMsg();
// Switch Activities on click
Intent blueintent = new Intent(SimpleFlashLightActivity.this,
BlueFlashLightActivity.class);
startActivity(blueintent);
}
});
//Install listener for second button
GreenButton = (Button) findViewById(R.id.greenbutton);
GreenButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
// Display msg when user clicks Green Button
showColorChangeMsg();
Intent greenintent = new Intent(SimpleFlashLightActivity.this,
GreenFlashLightActivty.class);
startActivity(greenintent);
}
});
;
/**************************************************************************************/
// Method Declarations // THIS IS WHERE I'M HAVING A PROBLEM
MenuItem AddColorButton = (MenuItem)findViewById(R.id.menu_insert);
boolean onOptionsItemSelected(AddColorButton) {
Intent intent = new Intent(SimpleFlashLightActivity.this,
BlueFlashLightActivity.class);
startActivity(intent);
return true;
;
};
/****************************************************************************************/
}
private void showColorChangeMsg()
{
Toast msgtoast = Toast.makeText(this.getBaseContext(), "SWITCH COLOR!",
Toast.LENGTH_LONG);
msgtoast.show();
}
private void showMsg(String msg) {
Toast toast = Toast.makeText(this, msg, Toast.LENGTH_LONG);
toast.show();
}
public boolean onCreateOptionsMenu(Menu menu) {
super.onCreateOptionsMenu(menu);
MenuInflater mi = getMenuInflater();
mi.inflate(R.menu.list_menu, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case OK_MENU_ITEM:
showMsg("OK");
break;
}
return super.onOptionsItemSelected(item);
}
}

Add Following Code
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.new_item:
Intent i = new Intent(this,SecondActivity.class);
this.startActivity(i);
return true;
default:
return super.onOptionsItemSelected(item);
}
}

Menu items file looks like
res/menu/menu_main.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=".MainActivity">
<item
android:id="#+id/settings"
android:title="Setting"
app:showAsAction="never" />
<item
android:id="#+id/my_activity"
android:title="My Activity"
app:showAsAction="always"
android:icon="#android:drawable/btn_radio"/>
</menu>
Java code looks like
src/MainActivity.java
#Override
public boolean onCreateOptionsMenu(Menu menu) {
present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.my_activity) {
Intent intent1 = new Intent(this,MyActivity.class);
this.startActivity(intent1);
return true;
}
if (id == R.id.settings) {
Toast.makeText(this, "Setting", Toast.LENGTH_LONG).show();
return true;
}
return super.onOptionsItemSelected(item);
}
And add following code to your AndroidManifest.xml file
<activity
android:name=".MyActivity"
android:label="#string/app_name" >
</activity>
I hope it will help you.

in addition to the options shown in your question, there is the possibility of implementing the action directly in your xml file from the menu, for example:
<item
android:id="#+id/OK_MENU_ITEM"
android:onClick="showMsgDirectMenuXml" />
And for your Java (Activity) file, you need to implement a public method with a single parameter of type MenuItem, for example:
private void showMsgDirectMenuXml(MenuItem item) {
Toast toast = Toast.makeText(this, "OK", Toast.LENGTH_LONG);
toast.show();
}
NOTE: This method will have behavior similar to the onOptionsItemSelected (MenuItem item)

This code is work for me
#Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
// add your action here that you want
return true;
}
else if (id==R.id.login)
{
// add your action here that you want
}
return super.onOptionsItemSelected(item);
}

This is how it looks like in Kotlin
main.xml
<menu xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<item
android:id="#+id/action_settings"
android:orderInCategory="100"
android:title="#string/action_settings"
app:showAsAction="never" />
<item
android:id="#+id/action_logout"
android:orderInCategory="101"
android:title="#string/sign_out"
app:showAsAction="never" />
Then in MainActivity
override fun onCreateOptionsMenu(menu: Menu): Boolean {
// Inflate the menu; this adds items to the action bar if it is present.
menuInflater.inflate(R.menu.main, menu)
return true
}
This is onOptionsItemSelected function
override fun onOptionsItemSelected(item: MenuItem): Boolean {
return when(item.itemId){
R.id.action_settings -> {
true
}
R.id.action_logout -> {
signOut()
true
}
else -> return super.onOptionsItemSelected(item)
}
}
For starting new activity
private fun signOut(){
MySharedPreferences.clearToken()
startSplashScreenActivity()
}
private fun startSplashScreenActivity(){
val intent = Intent(GrepToDo.applicationContext(), SplashScreenActivity::class.java)
startActivity(intent)
finish()
}

Replace Your onOptionsItemSelected as:
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case OK_MENU_ITEM:
startActivity(new Intent(DashboardActivity.this, SettingActivity.class));
break;
// You can handle other cases Here.
default:
super.onOptionsItemSelected(item);
}
}
Here, I want to navigate from DashboardActivity to SettingActivity.