Android How can I print a variable on eclipse console

Question

I wanted to print the value of a variable on the console for my debugging purpose  but System out println doesn t work

User · Answer

System out println and Log d both go to LogCat  not the Console

User · Answer

By the way  in case you dont know what is the exact location of your JSONObject inside your JSONArray i suggest using the following code   I assumed that  jsonArray  is your main variable with all the data  and i m searching the exact object inside the array with equals function       JSONArray list   new JSONArray         if  jsonArray    null           int len   jsonArray length            for  int i 0 i lt len i                           boolean flag              try                   flag   jsonArray get i  toString   equals obj toString                       Excluding the item at position                 if   flag                                         list put jsonArray get i                                    catch  JSONException e                    e printStackTrace                                         jsonArray   list

User · Answer

If the code you re testing is relatively simple then you can just create a regular Java project in the Package Explorer and copy the code across  run it and fix it there  then copy it back into your Android project   The fact that System out is redirected is pretty annoying for quickly testing simple methods  but that s the easiest solution I ve found  rather than having to run the device emulator just to see if a regular expression works

User · Answer

I think the toast maybe a good method to show  the value of a variable

User · Answer

Ok  Toast is no complex but it need a context object to work  it could be MyActivity this  then you can write   Toast maketext MyActivity this   Toast text to show   Toast LENGTH SHORT  show      Although Toast is a UI resource  then using it in another thread different to ui thread  will send an error or simply not work If you want to print a variable  put the variable name toString   and concat that with text you want in the maketext String parameter

User · Answer

toast is a bad idea  it s far too  complex  to print the value of a variable  use log or s o p  and as drawnonward already said  their output goes to logcat  it only makes sense if you want to expose this information to the end-user

User · Answer

Window- Show View- Other   - Android- LogCat

User · Answer

Writing the followin code to print anything on LogCat works perfectly fine    int score 0  score    System out println score     prints score on LogCat Try this

User · Answer

I m new to Android development and I do this   1  Create a class   import android util Log   public final class Debug      private Debug           public static void out  Object msg           Log i   info   msg toString               When you finish the project delete the class   2  To print a message to the LogCat write   Debug out   something     3  Create a filter in the LogCat and write  info  in the input  by Log Tag   All your messages will be written here      Tip  Create another filter to filter all errors to debug easily

[android] Android: How can I print a variable on eclipse console?

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