Android Development shake-shake function

==================== Problem Description ====================
Here is the code that I shook to implement

Public class yao extends activity implements sensoreventlistener{ edittext  tv = (EditText) Findviewbyid (R.ID.EDITTEXT1);  button button = (Button) Findviewbyid ( R.id.button1);  sensormanager sensormanager = null; vibrator vibrator =  null;  @Overrideprotected  void oncreate (bundle savedinstancestate)  { Super.oncreate (savedinstancestate); Setcontentview (R.layout.activity_main);if  ( ANDROID.OS.BUILD.VERSION.SDK_INT > 9)  {             StrictMode.ThreadPolicy policy = new  StrictMode.ThreadPolicy.Builder (). Permitall (). Build ();             strictmode.setthreadpolicy (Policy);        }  Button.setonclicklistener (New onclicklistener ()   {@Overridepublic  void oNclick (VIEW V)  {// todo auto-generated method stubtv.settext ("initial text");}     });sensormanager =  (Sensormanager)  getsystemservice (SENSOR_SERVICE); vibrator =  (Vibrator)  getsystemservice (Service.vibrator_service);} @Override  protected void onpause ()  {  super.onpause ();   Sensormanager.unregisterlistener (This); }   @Override  protected void onresume ()  {  super.onresume ();   sensormanager.registerlistener (this,   Sensormanager.getdefaultsensor (Sensor.type_accelerometer),   sensormanager.sensor_delay_normal);  }   @Override  public void onaccuracychanged (sensor sensor, int  Accuracy)  {  //when the sensor accuracy is changed,do nothing. }   @Override  public  Void onsensorchanged (sensorevent event)  {   int sensortypE = event.sensor.gettype ();   //values[0]:x axis, values[1]:y axis, values[2]:z axis   float[]  values = event.values;  if  (Sensortype == sensor.type_accelerometer)   {   if  (Math.Abs (values[0])  > 17 | |  math.abs (values[1])  > 17 | |  math     .abs (values[2])  > 17)    {//     LOG.D ("sensor x ",  "============ values[0] = "  + values[0] );//    LOG.D ("sensor y ",  "============ values[1] = "   + values[1]);//    LOG.D ("sensor z ",  "============ values[2]  =  " + values[2");     tv.settext ("Shake!!! Successfully");     //shake mobile phone, and then accompanied by vibration hint ~~    vibrator.vibrate ($);    }    }&nBSP;}} 

Why does the program run with a hint that the program is unresponsive and then quits? I read the code on the Internet is so written, where does the problem arise? High distribution, please help the master
==================== Solution 1====================
Control initialization cannot be placed at the top of the

EditText TV = (EditText) Findviewbyid (R.ID.EDITTEXT1); Button button = (button) Findviewbyid (R.id.button1);

This needs to be
Setcontentview (R.layout.activity_main);
Called after
==================== Solution 2====================
It seems that LZ is a novice ah, later to study hard
Reference 1 Floor guoyoulei520 's reply:

control initialization cannot be placed at the top of the

EditText TV = (EditText) Findviewbyid (R.ID.EDITTEXT1); Button button = (button) Findviewbyid (R.id.button1);

This needs to be
Setcontentview (R.layout.activity_main);
Called after

==================== Solution 3====================
Do a lot of computational work in the UI thread.

Android Development shake-shake function