Android :: Best Method For An Object To Send A Message To Another For Droid?
Sep 12, 2010
For example, say the main Activity has an custom object foo with a method called bar. When foo.bar() is called via the activity, it does a bunch of things on a thread and when it is finished it would somehow alert the main ui thread, the activity, it's parent that it is finished.
I imagine this working the same way an event like a OnClickListener works. The bar() method would trigger an event saying "Hey I'm finished" and that would trigger the listener on the main activity.
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Nov 24, 2010
Can anyone guide me as to how I can pass an object of a custom type from one Activity to another with the putExtra() method of Intent?
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Sep 29, 2010
I thought when you passed objects to methods in Java, they were supposed to be by value.
public class MyClass{
int mRows;
int mCols;
Tile mTiles[][]; //Custom class
//Constructor
public MyClass(Tile[][] tiles, int rows, int cols) {..........
At this point, any changes to the mTiles object are reflected back to the tiles object.
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Nov 7, 2010
In my program I have a custom view object. Inside the view class is a method called foo. For some reason when I call foo from my activity, it doesn't fire. Here is the code:
XML of the custom view:
<com.company.application.MyView android:id="@+id/my_view" android:layout_width="wrap_content" android:layout_height="wrap_content" />
The activity code:
public class Main extends Activity { MyView mView;
/** Called when the activity is first created. */
@Override public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState); setContentView(R.layout.main);
LayoutInflater li = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View v = li.inflate(R.layout.main, null); mView= (MyView) v.findViewById(R.id.my_view);
//A button to fire the method inside foo() Button switchLeft = (Button) findViewById(R.id.switch_left); switchLeft.setOnClickListener(new View.OnClickListener() { public void onClick(View v) { callTest(); } } );
} public void callTest() { Log.w(this.getClass().getName(), "clicked left arrow");
mView.foo(); mView.postInvalidate();
} }
Finally here is foo:
public void foo() { mBackground = mContext.getResources().getDrawable(R.drawable.temp_canvas); Log.w(this.getClass().getName(), "background set");
}
The first log is always written when the button is pressed, but the second log is not because foo never fires. What is the deal here? Upon request, the full view
public class MyView extends View { Drawable mBackground; Context mContext;
public MyView (Context context) { super(context); mContext = context;
mBackground = mContext.getResources().getDrawable(R.drawable.leftarrow1);
} public MyView (Context context, AttributeSet attrs) {
super(context, attrs); mContext = context;
mBackground = mContext.getResources().getDrawable(R.drawable.leftarrow1);
} public void foo() { mBackground = mContext.getResources().getDrawable(R.drawable.temp_canvas);
Log.w(this.getClass().getName(), "background set"); }
@Override public void onDraw(Canvas canvas) { Paint paint = new Paint();
paint.setStyle(Paint.Style.FILL); // draw a solid blue circle
paint.setColor(Color.BLUE); canvas.drawCircle(20, 20, 15, paint);
// draw a test background mBackground.setBounds(0, 0, 300, 400);
mBackground.draw(canvas); }
}
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Jun 9, 2010
I need to download an image from the internet,in a different thread,and then send that image object in the handler message, to the UI thread.And by the way, is this the most efficient way to pass an object to the UI Thread?
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Sep 20, 2010
I am developing an android application at the moment, and i'm facing a problem that i have no idea how to solve. My application communicates with a Tomcat Server, and i'm using ObjectOutputStream to send a Document object to my application from my servlet. There fore, i'm importing org.w3c.dom to my project. The problem i'm facing is, that I can't read the Document object with ObjectInputStream on my android device. I'm getting the following exception.
CODE:..................
I can send and recieve any object i want without any problem, but when I try to send an object refered to the com.w3c.dom package I get this exception.
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Oct 29, 2010
From my android client i am sending a json to string object.but the .net client is getting it as empty string. here is my code...
is this header format correct?
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Jun 8, 2010
I id a search, and the results were wide, varied and not to my point, so no I am asking the veterans.I would like to know how to initiate a text message on my Motorola droid. If I click the messaging icon on my home screen it takes me to gmail. if i open my phone and contacts, i get the email address and phone number displayed only, no option to text the desired contact.the only thing i seem to grasp is the call log. from there i can text or call again. seems like i can only text from call log, but if i have no call to tor from them in my log, and i want to text them, i do not know how. is there a good tutorial for texting and contacts? sorry if it seems like a dumb question, i just got my droid a couple hours ago. i am stokes because it was a sweet deal and i am not due to upgrade from my lame omnia for awhile. but i need to know how to text and initiate calls instead of just emailing everyone. the phone is sick sweet though.
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Apr 27, 2010
I have to build a feature in my application which allows user to send a skype message.
For this I have installed skype lite client for Android (although offically the download has been currently withdrawn from Skype).
Now how to initiate the activity from my application OR simply send the chat message without bringing it front, assuming I have skype installed in Android & also signed in already.
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Sep 1, 2010
How do you send a text message using the keyboard instead of tapping send on-screen?
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Oct 12, 2010
When i try and send a text message it says can not send, i have done an update too my phone.
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May 19, 2010
My problem is this, I downloaded Handcent and really like it, however, I can't send messages from home. I have marginal service here (around -98 avg.) but I do get 3G. Whenever I send a message it says Message Failed - Retry, Cancel? I've even had this problem in places with great coverage for both 3G and cell service. The stock messaging app works just fine. So what I've been doing is receiving messages with Handcent and then sending them using the stock app.
So, does anyone have any ideas of what I can do? Are there any settings that can be changed? Does handcent use 3G to send messages?
I'm now trying Chomp to see if that's any better. And, just an FYI, I'm having trouble with text messages, not MMS. I haven't tried sending any pics or videos yet, I've just been sending SMS.
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Sep 2, 2009
How we can send the Url Using Http Get Method in Android Android ..I tried but it doesn't works.can u give me the code to send url via http get method..
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Jul 1, 2010
I received an image in a message and want to send it to email.However, there is no option to send or save the image.I cannot even find it on the disc when connected to a PC. How can I get this image off the phone to an email or copy to PC?
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Feb 22, 2010
I went to my verizon wireless account and tried to send a text to my number@vtext.com The web site came back with "invalid address". No hyphens or special characters, just the 10 digit number@vtext.com I even tried sending a text from a hotmail account to my vtext address - no go.Is anyone able to send a text to your own phone through the web site? I have a feeling that is why iPhones can't send or receive pictures from the Eris.
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Dec 10, 2009
It probably is a stupid question to ask (once again, Nugget = techtarded), but how do I send a picture message? I usually message through Chomp, but I don't see a way to send a picture message.
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Sep 2, 2009
How to send the Url to the server using Http Get method...Here i m trying to insert a name into the databse .If i execute the below showing code there it tells "Connection to http:localhost refused " I think the error is is in the Http method..how to Correct it....
CODE:...............................
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May 28, 2010
Can I send one of the ringtones I downloaded to someone in text message so they can use it as a ringtone?
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Mar 21, 2010
I can not send pictures via text message with the stock message app, Handcent, or Chomp. I had been using Handcent for the past 2 1/2 months or so just fine, it would send pics. Then all of a sudden about a week ago it just stopped. It just kept showing the turning green circle over and over until the sending failed. I updated it, I uninstalled it, I reinstalled it. I tried Chomp. I tried the stock app. None of them will send a pic to another phone or to an email. I can send pics to facebook with the facebook app. The stock email app will send an email with a pic attached however.
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Apr 26, 2010
I wanted to know is there a way to send songs via text message I tried chomp the message never sends.
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Nov 10, 2009
How do i send a stupid simple text message?? not a email, not google just a simple old text like i use to do tied into vtext.com
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Nov 11, 2009
I been trying to figure out how to text more then one person on my contact list. Does anybody know how to do that besides using google voice or downloading another app(ex.Group contact Creator)?. Usually this feature is in almost all of the phones i have used in the past.
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Mar 18, 2010
Another slightly dumb question, how do i send a video message to another phone? It says that its too big and it cant be attached to the message.
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Feb 19, 2010
Is there any method to align toast message in application.By default it always appears at the bottom of application.
i did it like this...
Toast.makeText(this, "hello !", Toast.LENGTH_LONG).show();
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Sep 15, 2010
I dont know if its something I did or not but...when I try to forward emails from my Droid Gmail account I get a message that says "Send this message without text in the body". If I continue then it forwards but nothing comes with it.
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Dec 10, 2009
1: why can't I save to my ad card?
2: how do I send a picture sms message?
Also are there any apps out there that will let me download full length mp3's? And did I get a bad battery or does the HTC Eris battery only last a couple hours? Also my phone is an HTC droid eris. Oh and one last question i heard that the eris will be updated from android 1.5 to 2.0 Will that be a software update that I will be able to do with my 2 day old eris when The update comes out?
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Nov 9, 2009
On the droid, I've got my corporate email, my gmail and my yahoo setup. However, when I click on a mailto link, it only sends from my corporate email.How can I change it so that I can select which account I want to send from when I click on a link?
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Jun 15, 2010
I accidentally sent a text message to a caller today when I was already on another call. That's a cool feature and I'd like to use it, but I'm not sure how it happened?
I found the option to change my outgoing text message under my settings, but now I just need to know how to use the feature. I tried it a few different ways with my son calling me while I was on another call, but I ended up dumping him into voicemail instead of sending the text message.
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Apr 12, 2010
I'm trying to implement an input method service that receives intents sent by a remote client, and in response to those sends an appropriate KeyEvent. Is there any way to send keys and control the device like using the hardware keys from an input method?
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Jul 25, 2010
Has anyone else ran into this issue with the latest update? Sending a text message that ends in a question mark doesn't send, or doesn't make it to the recipient?
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