Custom implementation of android tabs, that overcomes some of the shortcoming of build in tabs.

Due to limitation of Android Tab component I created a custom TabWidget that I am using in couple different projects already. The widget allows us to add custom background and use custom icons, tabs can be Top/Bottom aligned.

Currently tabs can launch new Activity and Dialog , when starting new Activity we can use "startActivityForResult" so our tab will get a notification when other activity have finished.

This is not a perfect solution as there are some drawbacks to it but it suits me well so I will stick to it till something better comes along; Hint Android gurus we need to be able to start new activities inside existing tab with more customization.

Creating a Tab

There a two thing that a tab needs

• con: either R.drawable.id or Drawable Object
• n Activity set via Intent or Dialog

Tab homeTab=new Tab(context, "HOME");
homeTab.setIcon(R.drawable.home);
homeTab.setIconSelected(R.drawable.home_selected);
homeTab.setIntent(new Intent(context, CarmeLauncher.class));

What is a TabHost ?

TabHost host tabs and specify how they will be rendered , TabViewConfig is used to configure the TabHost

TabHost tabHost=new TabHost(
	new TabViewConfig()
	.context(context)
	.headerResourceId(R.drawable.tab_background_55)
	.separatorId(R.drawable.separator)
	.orientation(TabHost.Orientation.BOTTOM)
);

I use fluent interfaces or as some call it Builder pattern for configuring TabHost I think its straight forward and intuitive.

Binding tabs to Activity

public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		//Our Tab provider
		TabHostProvider tabProvider=new CarmeTabProvider(this);
		TabHost tabHost=tabProvider.getTabHost("main");
		//This is the content of the tab
		tabHost.setCurrentView(R.layout.main);
		setContentView(tabHost.render());
}

To make tab selected we need to retrieve it using tab assigned TAG name in this case "HOME" before

setContentView(tabHost.render())

Tab home=tabHost.getTab("HOME");
home.setSelected(true);
setContentView(tabHost.render());

Demo

Project Demo