Basic shortcuts for Android Emulator.

Emulated Device Key	Keyboard Key
Home	HOME
Menu (left softkey)	F2 or Page-up button
Star (right softkey)	Shift-F2 or Page Down
Back	ESC
Call/dial button	F3
Hangup/end call button	F4
Search	F5
Power button	F7
Audio volume up button	KEYPAD_PLUS, Ctrl-5
Audio volume down button	KEYPAD_MINUS, Ctrl-F6
Camera button	Ctrl-KEYPAD_5, Ctrl-F3
Switch to previous layout orientation (for example, portrait, landscape)	KEYPAD_7, Ctrl-F11
Switch to next layout orientation (for example, portrait, landscape)	KEYPAD_9, Ctrl-F12
Toggle cell networking on/off	F8
Toggle code profiling	F9 (only with -trace startup option)
Toggle fullscreen mode	Alt-Enter
Toggle trackball mode	F6
Enter trackball mode temporarily (while key is pressed)	Delete
DPad left/up/right/down	KEYPAD_4/8/6/2
DPad center click	KEYPAD_5
Onion alpha increase/decrease	KEYPAD_MULTIPLY(*) / KEYPAD_DIVIDE(/)

More about Android Emulator

Eclipse Navigation Shortcuts.

Keyboard_shortcuts_(3.0).pdf
Ctrl+1 Quick fix problem

Ctrl+O Quick Outline

Ctrl+Shift+G Find references in workspace
Ctrl+Shift+U Find all references in file

Ctrl+Shift+T Find Java Typ

[caption id="attachment_1214" align="alignleft" width="150" caption="eclipse-ctrl-shift-t"][/caption]

Ctrl+Shift+R Find Resource

Ctrl+E Open Editor Drop-Down
Ctrl+Space Content Assist

Ctrl+Shift+Space Context Information

F3 Open Declaration of variable
F4 Open Type Hierarchy
Ctrl+H Open Search Dialog
Alt+Shift+R Rename - Refactoring
Alt+Shift+M Extract Method
Alt+Shift+L Extract Local Variable

Alt Shift Up Expand selection to enclosing element
Alt Shift Right Expand selection to next element
Alt Shift Left Expand selection to previous element
Alt Shift Down Restore previous selection

Breakpoints Shift+Alt+Q B
Cheat Sheets Shift+Alt+Q H
Console Shift+Alt+Q C
Java Declaration Shift+Alt+Q D
Java Package Explorer Shift+Alt+Q P
Java Type Hierarchy Shift+Alt+Q T
Javadoc Shift+Alt+Q J
Search Shift+Alt+Q S
Show View (View: Outline)Shift+Alt+Q O
Show View (View: Problems)Shift+Alt+Q X
Synchronize Shift+Alt+Q Y
Variables Shift+Alt+Q V

Toast in Android application is equivalent of Alert in JavaScript or MessageBox in WinApi.

// Toast android.widget.Toast.makeText(Context context, CharSequence text, int duration)
// public static Toast makeText (Context context, CharSequence text, int duration) 

Toast.makeText(getApplicationContext(), "Hello world!",
                  Toast.LENGTH_SHORT).show();

On Android device is path to *.apk like this example:

/data/app/cz.okhelp.my_package.apk

How get package *.apk path on device dynamically Android example

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        String sPackagePath = getPackageResourcePath();
     }

[2013-07-06 16:10:29 - SDK Manager] [SDK Manager] Error: Error parsing the sdk.
[2013-07-06 16:10:29 - SDK Manager] [SDK Manager] Error: Failed to create C:\Program Files\android\sdk\add-ons.
[2013-07-06 16:10:29 - SDK Manager] [SDK Manager] Error: Unable to parse SDK content.

You have to create add-ons folder as admin of PC