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POAndroid Application Init and global objects
 

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  1. POAndroid Application Init and global objects
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    <p>Hi I am new to android programming and I was having some issues in application initialization. I will explain app structure first and then problems.</p> <p>The application has a thread which should always run and listen on Datagram socket. Whenever a message is received it takes appropriate actions. On certain actions I needed <strong>Context</strong> object and I also use <strong>Handler</strong> object for passing data to UI thread. Both of these objects were initialized in my Thread class's constructor by passing from main activity's <strong>OnCreate</strong> method. Now I am having the problem that whenever my activity is switched or I tilt the phone, all objects in main activity are recreated and the references which I passed before to Thread class of <strong>Handler</strong> and <strong>Context</strong> becomes invalid.</p> <p>How should I handle this problem. Thanks in advance. Application structure is like this.</p> <pre><code>public class MainActivity extends Activity { private Context ctx; Handler handler = new Handler() { @Override public void handleMessage(Message msg) { Bundle bundle = msg.getData(); String mtype = bundle.getString("mtype"); // DO SOME STUFF HERE // } @Override protected void onCreate(Bundle savedInstanceState) { // OTHER INITIALIZATIONS // ctx = this; rxThread = new ControlReceiver(ctx, handler); rxThread.start(); } }; </code></pre> <p>The thread class is like this.</p> <pre><code>public class ControlReceiver extends Thread { private Context context; private Handler handler; ControlReceiver(Context c, Handler h){ context = c; handler = h; } public void run() { // DO STUFF HERE // // SEND MESSAGE TO UI // msg = handler.obtainMessage(); bundle = new Bundle(); bundle.putString("mtype", "ECHTB"); msg.setData(bundle); handler.sendMessage(msg); } }; </code></pre>
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    1. USKanwar Saad
    1. USKanwar Saad
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    1. COCan we see some code?
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    2. COThe question is simple but I'll try to write some sketch of the code.
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    3. COI've edited the code.
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      1. USKanwar Saad
 

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