Comment faire de Chargement 3 dot d'animation dans l'écran de démarrage

Salut, je suis en train de faire ma 1ère application android et j'ai fait un écran de démarrage. Cependant, j'ai essayé d'ajouter de chargement, veuillez patienter en bas avec la période de l'incrément toutes les 2 secondes. Je ne suis pas sûr de savoir comment y arriver parce que l'écran se bloque à cause de ce texte.

   final TextView loadingText = (TextView)findViewById(R.id.loading_text);

    Thread splashTimer = new Thread(){
        public void run(){
            try{
                int splashTime = 0;
                while(splashTime < 6000){

                    sleep(100);

                        if(splashTime < 2000){
                            loadingText.setText("Loading.");
                        }
                        else if(splashTime >= 2000 && splashTime < 4000 ){
                            loadingText.setText("Loading..");
                        }else if (splashTime >= 4000){
                            loadingText.setText("Loading...");  
                        }
                        splashTime = splashTime + 100;

                }
                Intent intent = new Intent(MainActivity.this,myMainScreen.class);
                startActivity(intent);
            }catch(InterruptedException e){
                e.printStackTrace();
            }

            finally{
                finish();
            }
        }
    };
    splashTimer.start();    
}  

voici mon logcat

06-12 01:36:33.646: D/HyLog(29533): I : /data/font/config/sfconfig.dat, No such file or directory (2)
06-12 01:36:33.646: D/HyLog(29533): I : /data/font/config/dfactpre.dat, No such file or directory (2)
06-12 01:36:33.646: D/HyLog(29533): I : /data/font/config/sfconfig.dat, No such file or directory (2)
06-12 01:36:33.986: I/Adreno-EGL(29533): <qeglDrvAPI_eglInitialize:385>: EGL 1.4 QUALCOMM build:  ()
06-12 01:36:33.986: I/Adreno-EGL(29533): OpenGL ES Shader Compiler Version: E031.24.00.02
06-12 01:36:33.986: I/Adreno-EGL(29533): Build Date: 01/20/14 Mon
06-12 01:36:33.986: I/Adreno-EGL(29533): Local Branch: PMH2-KK_3.5-RB1-AU61-554722-586267-set2
06-12 01:36:33.986: I/Adreno-EGL(29533): Remote Branch: 
06-12 01:36:33.986: I/Adreno-EGL(29533): Local Patches: 
06-12 01:36:33.986: I/Adreno-EGL(29533): Reconstruct Branch: 
06-12 01:36:34.026: D/OpenGLRenderer(29533): Enabling debug mode 0
06-12 01:36:34.096: I/ActivityManager(29533): Timeline: Activity_idle id: android.os.BinderProxy@42b1e788 time:14063098
06-12 01:36:34.336: W/dalvikvm(29533): threadid=11: thread exiting with uncaught exception (group=0x41ae6e48)
06-12 01:36:34.336: E/AndroidRuntime(29533): FATAL EXCEPTION: Thread-2388
06-12 01:36:34.336: E/AndroidRuntime(29533): Process: com.sachinda.myfirstapp, PID: 29533
06-12 01:36:34.336: E/AndroidRuntime(29533): android.view.ViewRootImpl$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.
06-12 01:36:34.336: E/AndroidRuntime(29533):    at android.view.ViewRootImpl.checkThread(ViewRootImpl.java:6347)
06-12 01:36:34.336: E/AndroidRuntime(29533):    at android.view.ViewRootImpl.requestLayout(ViewRootImpl.java:871)
06-12 01:36:34.336: E/AndroidRuntime(29533):    at android.view.View.requestLayout(View.java:16472)
06-12 01:36:34.336: E/AndroidRuntime(29533):    at android.view.View.requestLayout(View.java:16472)
06-12 01:36:34.336: E/AndroidRuntime(29533):    at android.view.View.requestLayout(View.java:16472)
06-12 01:36:34.336: E/AndroidRuntime(29533):    at android.view.View.requestLayout(View.java:16472)
06-12 01:36:34.336: E/AndroidRuntime(29533):    at android.widget.RelativeLayout.requestLayout(RelativeLayout.java:352)
06-12 01:36:34.336: E/AndroidRuntime(29533):    at android.view.View.requestLayout(View.java:16472)
06-12 01:36:34.336: E/AndroidRuntime(29533):    at android.widget.TextView.checkForRelayout(TextView.java:6817)
06-12 01:36:34.336: E/AndroidRuntime(29533):    at android.widget.TextView.setText(TextView.java:3947)
06-12 01:36:34.336: E/AndroidRuntime(29533):    at android.widget.TextView.setText(TextView.java:3805)
06-12 01:36:34.336: E/AndroidRuntime(29533):    at android.widget.TextView.setText(TextView.java:3780)
06-12 01:36:34.336: E/AndroidRuntime(29533):    at com.sachinda.myfirstapp.MainActivity$1.run(MainActivity.java:45)
06-12 01:36:36.316: I/Process(29533): Sending signal. PID: 29533 SIG: 9
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InformationsquelleAutor Sachi | 2014-06-12