Passing main activity instance to subactivity

Katharnavas · by **Katharnavas** » Fri Jan 18, 2008 2:20 pm

Hi,
1)How to pass the instance of the main activity to the subactivity so that public methods in the main activity can be called from the subactivity.

2) How to call a common subactivity from more than one activity class and how can we get the information that which activity calls that subactivity.

Any suggestions please...

plusminus · by **plusminus** » Fri Jan 18, 2008 7:11 pm

Hello Katharnavas,

have a look at :src: this post.

To retrieve the name of the calling Activity do the following within onCreate():

Syntax: [ Download ] [ Hide ]

Using java Syntax Highlighting

        ComponentName cn = getCallingActivity();
Parsed in 0.030 seconds,  using GeSHi 1.0.8.4

Regards,
plusminus

Katharnavas · by **Katharnavas** » Thu Jan 24, 2008 2:27 pm

How to return a vector from the subactivity to the main activity. With Bundle we can be able to send only primitive datatypes such as integer or string. But is it possible to return a vector.

plusminus · by **plusminus** » Thu Jan 24, 2008 4:40 pm

Hello Katharnavas,

this issue should helo you further :arrow:

Passing and Recieveing Values between Activities.

Regards,
plusminus

[Edit] I see you found it already [/Edit]

Katharnavas · by **Katharnavas** » Fri Jan 25, 2008 5:14 am

plusminus wrote:Hello Katharnavas,

this issue should helo you further Passing and Recieveing Values between Activities.

Regards,
plusminus

[Edit] I see you found it already [/Edit]

Hi
I could not understand , can you explain me the possibility.

plusminus · by **plusminus** » Fri Jan 25, 2008 4:04 pm

Hello Katharnavas,

Ishatar suggested this:

Syntax: [ Download ] [ Hide ]

Using java Syntax Highlighting

HashMap meMap=new HashMap();
meMap.put("mystream",myStream);
Intent myIntent.putExtra("memap",meMap);
 
Intent getIntent=getIntent();
mystreamagain=getIntent().getExtra("memap").get("mystream"); 
Parsed in 0.031 seconds,  using GeSHi 1.0.8.4

If you need to pass just one object you would not need to wrap it in the hashmap.

Regards,
plusminus

Ishtar · by **Ishtar** » Fri Jan 25, 2008 4:54 pm

the name is ISHTAR. Just kidding :wink:

I did not test it, so Im not sure it works.. It was a suggestion. And you would need to wrap it, even if it's just one object, because you can only send Int's, Strings and HashMaps.. Second option: you can also make a static class, with a static member: your vector. You could then access it from anywhere in your program. Both are dirty tricks. Easiest would be to rethink your design (if possible...)

Ishtar

plusminus · by **plusminus** » Fri Jan 25, 2008 5:23 pm

Sorry Ishtar

,

lol, I trusted in the Object-Parameter. They must be kidding:
Make the parameter-type 'Object' and internally allow only 'Integer, String, or HashMap'...... :roll:

public Intent putExtra(String name, Object value)
....
value The data value. Can only be an Integer, String, or HashMap.

Regards,
plusminus

Passing main activity instance to subactivity

Passing main activity instance to subactivity

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