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A. L. Schreyer
1,354 Pointsmessage.obj doesn't exist?
I keep getting the error that the compiler does not recognize message.obj in the following code:
String helloWorld = "Hello World"; Message message = Message.obtain(); message.obj = helloWorld; thread.mHandler.sendMessage(message);
Message.obj is defined in the Android documentation and I did everything the same way they did it in the video, so why is it saying it doesn't exist?
public class MainActivity extends Activity {
Button button;
TwitterClient twitterClient = new TwitterClient();
@Override
public void onCreate(Bundle savedInstanceState) {
setContentView(R.layout.activity_main);
final TwitterThread twitterThread = new TwitterThread();
twitterThread.setName("TwitterThread");
twitterThread.start();
button = (Button) findViewById(R.id.update_button);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v){
String hello = "hello";
Message message = Message.obtain();
message.obj = hello;
thread.mHandler.sendMessage(message);
}
});
}
class TwitterThread extends Thread {
TwitterHandler mHandler = new TwitterHandler();
@Override
public void run() {
Looper.prepare();
Looper.loop();
}
}
class TwitterHandler extends Handler {
@Override
public void handleMessage(Message msg){
twitterClient.update();
}
}
}
2 Answers
Evan Demaris
64,262 PointsHi A. L.,
The problem with your code is that it doesn't do what the Challenge asks for. The Challenge doesn't want you to assign a string to message.obj, it just wants you to send off a message. Additionally, the Challenge is asking for you to assign mHandler inside the run function.
Hope that helps!
A. L. Schreyer
1,354 PointsThe wording of the problem should be more clear because I thought the message was supposed to actually say something.
Evan Demaris
64,262 PointsAfter you complete this Challenge, there's a button labelled Rate this Video that you can use to provide feedback. It's in the lower left under the chart showing your progress. If you'd like to have a reply, though, you can email concerns about a course directly to the course's teacher.