Question

Whenever I attempt to set content view after dismissing the progress dialog I get an error like…

04-13 14:40:38.043: WARN/System.err(801): android.view.ViewRoot$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.
04-13 14:40:38.073: WARN/InputManagerService(59): Window already focused, ignoring focus gain of: com.android.internal.view.IInputMethodClient$Stub$Proxy@44dde3f0

My code is like…

ProgressDialog dialog = null; //class variable.


dialog = ProgressDialog.show(Login.this, "", 
            "Logging you in. Please wait...", true);
     new Thread() {
         public void run() {
                 try{
                      //serious work here!
                    }
                    dialog.dismiss();
                    setContentView(R.layout.blaa);
                 } catch (Exception e) {
                     e.printStackTrace();
                 }
         }
 }.start();

What’s causing this?

Answer 1

Your Thread are not the UI-thread. I think you need to create a Handler and then post a Runnable to it when you need to switch content view.

Handler hdl = new Handler(); // Will ron on UI-thread

dialog = ProgressDialog.show(Login.this, "", 
        "Logging you in. Please wait...", true);
new Thread() {
     public void run() {
             try{
                  //serious work here!
                }
                hdl.post(new Runnable() {
                    public void run() {
                        dialog.dismiss();
                        setContentView(R.layout.blaa);
                    }
                });
             } catch (Exception e) {
                 e.printStackTrace();
             }
     }
}.start();