Simple example for Intent and Bundle

Question

I m new to android with almost no knowledge about Java and XML  I m learning it through pdfs that i m getting on net  I have learnt about Toast  a bit about Intents but me not able to understand anything about Bundles  I have understood that they are used to pass data from one activity to another but I m not able to implement this   please give a simple example to implement the same   as for example I have just created two activities namely   Main Activity and Other Activity  and i haven t done anything to them yet   Please give the simplest example so that i can learn to implement   Thanks in advance

User · Answer

Basically this is what you need to do  in the first activity   Intent intent   new Intent    intent setAction this  SecondActivity class   intent putExtra tag  value   startActivity intent     and in the second activtiy   Intent intent   getIntent    intent getBooleanExtra tag  defaultValue   intent getStringExtra tag  defaultValue   intent getIntegerExtra tag  defaultValue     one of the get-functions will give return you the value  depending on the datatype you are passing through

User · Answer

Try this  if you need pass values between the activities you use this     This is code for Main Activity put the values to intent   String name  aaaa    Intent intent new Intent Main Activity this Other Activity class    intent putExtra  name   name    startActivity intent     This code for Other Activity and get the values form intent      Bundle b   new Bundle        b   getIntent   getExtras        String name   b getString  name

User · Answer

For example    In MainActivity     Intent intent   new Intent this  OtherActivity class   intent putExtra OtherActivity KEY EXTRA  yourDataObject   startActivity intent     In OtherActivity    public static final String KEY EXTRA    com example yourapp KEY BOOK     Override protected void onCreate Bundle savedInstanceState      super onCreate savedInstanceState      String yourDataObject   null     if  getIntent   hasExtra KEY EXTRA           yourDataObject   getIntent   getStringExtra KEY EXTRA       else         throw new IllegalArgumentException  Activity cannot find  extras     KEY EXTRA            do stuff     More informations here    http   developer android com reference android content Intent html

[android] Simple example for Intent and Bundle

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