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Using SubActivities in Android

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Sometimes you need to run some Activity, do some operation there and return some value to parent Activity. For this situation Android has possibility to run Activity for result.

Viewing logs and exceptions in Android

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I found that there is no logcat console in android plugins for NetBeans and IDEA 8.

But when you develop application you need to see exceptions or see simple log.

I am going to show how easy is to see all these things in system console.

At first you should have installed Android SDK.

At second type in your console:

adb logcat

Note: emulator instance should be working.

IntelliJ IDEA 9 Beta is released

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Good news for all who use IDEA. JetBrains announced that anybody can download and try their IDEA 9 Beta.

Some new features:

• Faster Environment
• Improved Code Understanding
• Cleaner, More Productive Coding
• More Efficient User Interface
• More Flexible Project Structure
• Preliminary Java 7 Features Support
• Java EE 6 Support
• Improved Groovy support
• Extended Polyglot Arsenal
• New Web Frameworks Support
• OSGi Application Development
• Enhanced Maven Support
• Android Development
• Better JavaScript and HTML
• Flex Development
• Context Management
• UML Support
• Version Control Integration

Using Context Menus in Android

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Context menu in Android is similar to context menu in any others OS.

In Microsoft Windows or in any Linux distr you click right mouse key and see context menu. The same is in Android, but you press and hold your view which has context menu.

Adding alphabetic shortcut to the menu item in Android

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There is a way to add shortcut to your menu item.

I am going to show how it can be done.

@Override
public boolean onCreateOptionsMenu(Menu menu) {
	menu.add(0, NEW_MENU_ITEM, 0, "New").setAlphabeticShortcut('N');
...
	return super.onCreateOptionsMenu(menu);
}

As you see it is very easy.
How you can test it? Run your code with this snippet, click Menu button and after click “N”.

Adding icon to the menu item in Android

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There is a good practice to add icons to the menu items.

I am going to show code snippet which add icon to the menu item:

@Override
public boolean onCreateOptionsMenu(Menu menu) {
   menu.add(0, ADD_MENU_ITEM, 0, "Add").setIcon(android.R.drawable.ic_menu_add);
   return super.onCreateOptionsMenu(menu);
}

This code adds icon add to the menu item ADD_MENU_ITEM.

As you see this is simple operation.