How to Debug Android Application Line by Line Using Eclipse

How to Debug Android application line by line using Eclipse?

1. either start the app by right clicking on the project and select Debug As->Android Application or by running it normally and later in the DDMS perspective select the running app in your devices pane and click on the green bug.

2. once a breakpoint has been hit you can step over (f6) or step into (f5) (check the Run menu for more commands).

How to execute (debug) line by line (in Eclipse?)

The Step Into command is what you are looking for.

When the execution is before a call to a method of another class (The line that calls the other class is marked), press the Step Into button from the debug tool bar. This will jump right into the other class and show you how the method there is executed step by step.

This is what the Step Into button looks like:

If you also have not found a way to execute the program line by line yet, the Step Over command is what you need for that. Look for this button:

debugging android application line by line in eclipse

Put a breakpoint at first line in the first class(right click on the line and select Toogle breakpoint), than run appli in debug mode (Run->Debug).
It will stop at your breakpoint and then use F6 to navigate line by line. (keep mouse on the desired variable and it will show the value at that point or even add in expressions to see the value every time)

Debug Android app with Eclipse on real devices

General instructions to follow:

1. Do adb devices in command prompt - are you able to see device - Yes
   then great , else restart adb device/reconnect device/ check drivers
2. Change run configurations of the project(right
   click->Properties->Run As->Run Configurations-> Target) to prompt
   for device everytime you run. The device should have USB Debugging enabled.
3. Click on the debug icon in your toolbar and choose your device for
   debugging - put break points and voila it should work. Make sure your Breakpoints are in places where the code is generated. Code may not be hit sometimes because thats how the code is

This is for Google Approved devices.

How to debug signed Android app from Eclipse?

Set the debuggable=true in the manifest, export, install and sign the the app. Connect the device via USB, enable USB debugging. Then open the DDMS perspective, select the device and attach to your app's process (you will see the package name listed). If you have a rooted device, you can connect to any process if adb is running as root.

How to debug Android App in Exclipse?

Setup: download the Android Developer Tools (ADT) plugin for Eclipse from here http://developer.android.com/tools/index.html

To debug:

1. Connect your phone to PC via USB
2. Open Eclipse, set breakpoints
   wherever you need
3. Run -> Debug to relaunch your app in debug mode
4. Use the Debug perspective, see:
   http://developer.android.com/tools/debugging/debugging-projects.html

What's wrong with debugging in Eclipse on Android?

Yes, you've missed one of the very important plug-ins for Eclipse called "LogCat". It catches all the debugging logs that your Android program gives, whether it's running on the Emulator or a real phone. The latter obviously requires that the phone be plugged in to the computer, and less-obviously, the setting in Application -> Development -> Enable USB Debugging be enabled.

The LogCat messages give you the full breakdown of what caused the error, including the line number. To open LogCat in Eclipse, go to Window -> Show View -> Other -> Android (one of the folders in the list) -> LogCat. Then dock the LogCat window somewhere where you can see it easily, and Eclipse will remember that location and open it up again next time your start it.

(Sometimes LogCat and the Emulator get disconnected from each other. The simple way to fix that is just to close Eclipse and the emulator, then restart them both.)

How do you use usb debugging with eclipse and real android device

Make sure 'skip all breakpoints' is not enabled in debugging controls.

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