Develop Reference

Add icon to fragment actionbar and get reference to it

I have no custom bar, I just set a delete icon to the actionbar, but now I need to set OnClickListener to this icon. how can I do that without custom bar is this possible. Also the icon not apears on the left side, can I set it on the rightside?
activity.getSupportActionBar().setIcon(R.drawable.ic_delete);
I use Navigation Drawer, when I use custom bar the toggle icon despairs.

Looks like you want to set the ActionBar's home button as your delete button. I would suggest not to do it as that is a bad design decision in my opinion. And moreover you also want to show the button on the right hand side which can be done in a much intuitive manner by using a menu.
Please have a look at the official documentaion for adding ActionBar actions here
Basically you need to add an XML menu resource and declare your actions like this:
<menu xmlns:android="http://schemas.android.com/apk/res/android" >
<item
android:id="#+id/action_delete"
android:icon="#drawable/ic_delete"
android:title="#string/action_delete"
app:showAsAction="always"/>
</menu>
Then in your Activity override the OnOptionsItemSelected method:
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case R.id.action_delete:
// Do your stuff here
return true;
default:
return super.onOptionsItemSelected(item);
}
}

actionBar.setDisplayHomeAsUpEnabled(true);
Then you need to override activity method:
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
onIconClicked();
return true;
default:
return super.onOptionsItemSelected(item);
}
}
To create an item in the right side, you need to create custom menu, actually, it is simple.
Here is example how to do this

Handle the click of Navigation drawer Hamburger icon when FAB button is open

I have a navigation drawer layout in my fragment and a floating action menu in the layout. Now when the floating action menu expands then i have to handle the click of the navigation drawer hamburger icon.
When floating action menu expands then the navigation icon should not work and don't allow drawer to open.
#SuppressWarnings("deprecation")
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// TODO Auto-generated method stub
switch (item.getItemId()) {
case android.R.id.home:
break;
}
I have tried this but, it isn't working.
If someone has a better answer that is useful please let me know.

Clicking application logo do something other than open navigation drawer

In my application when the user clicks on the application logo or title, system will open the navigation drawer.
I want to make the navigation drawer to be open only if the navigation icon clicked, as i want to do some other logic if the user clicks application logo and title.
How to perform that ?
This code is intended to open navigation drawer upon clicking application logo, title or navigation icon.
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// toggle nav drawer on selecting action bar app icon/title
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
// Handle action bar actions click
switch (item.getItemId()) {
case R.id.action_settings:
return true;
default:
return super.onOptionsItemSelected(item);
//return false;
}
}
Any advice is appreciated

I Would advice you to create a custom Toolbar using a separate XML layout and use it in your Main layout,as it is easy.
so the imageview and text View can serve for a specific purpose when clicked!

Enabling the action bar's home button

Pressing on the app's icon doesn't change the activity, but I'd like it to return to the app's MainActivity.
I've made my app's icon appear on the left of the action bar by doing the following:
ActionBar actionBar = getActionBar();
actionBar.setHomeButtonEnabled(true);
actionBar.setDisplayShowHomeEnabled(true);
I'm assuming I should define some functionality in the onOptionsItemSelected() methods of the activities concerned. I've gotten a log of the MenuItem's ID when the app's icon is pressed and onOptionsItemSelected() gets called, but obviously I can't hardcode that id into the switch statement. What should I do?

You should set android:parentActivityName for your activity in the manifest file.
android:parentActivityName="com.example.myfirstapp.MainActivity"
You also need to handle the click in onOptionsItemSelected for the id of android.R.id.home:
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
// Respond to the action bar's Up/Home button
case android.R.id.home:
NavUtils.navigateUpFromSameTask(this);
return true;
}
return super.onOptionsItemSelected(item);
}
See more on Android developer website.

This is how I'd do it
public boolean onOptionsItemSelected(MenuItem item) {
if(item.getItemId() == R.id.HomeButtonId){
//Return Home
}
}

Back Arrow in Action bar Sherlock is not displaying

In my project I have used action bar sherlock library. I want to make back button in action bar I used following code
getSupportActionBar().setHomeButtonEnabled(true);
And
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
finish();
break;
default:
return super.onOptionsItemSelected(item);
}
return false;
}
Every thing is working fine, but back Arrow (to the left of icon) is not displaying. I want to show Back Arrow also. Can anyone tell me what I am doing wrong.

You have to set it up this way:
ActionBar ab = getSupportActionBar();
ab.setDisplayHomeAsUpEnabled(true);
Hope that helps.