Не удается Запустить задачу ComponentInfo NullPointExeption

Question

Я изучаю, как программировать и делать приложения на протяжении трех месяцев, и я пытался в течение нескольких дней исправлять эту ошибку, я не смог найти, какая часть кода имеет нулевую точку :( я действительно ценю вашу помощь, спасибо

Журнал ошибок:

11-16 23:27:27.618: E/AndroidRuntime(4298): FATAL EXCEPTION: main 
11-16 23:27:27.618: E/AndroidRuntime(4298): Process: edu.uco.clam.onyourbike_chapter7, PID: 4298 
11-16 23:27:27.618: E/AndroidRuntime(4298): java.lang.RuntimeException: Unable to start activity ComponentInfo{edu.uco.clam.onyourbike_chapter7/edu.uco.clam.onyourbike_chapter7.activities.TimerActivity}: java.lang.NullPointerException 
11-16 23:27:27.618: E/AndroidRuntime(4298):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2184) 
11-16 23:27:27.618: E/AndroidRuntime(4298):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2233) 
11-16 23:27:27.618: E/AndroidRuntime(4298):  at android.app.ActivityThread.access$800(ActivityThread.java:135) 
11-16 23:27:27.618: E/AndroidRuntime(4298):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196) 
11-16 23:27:27.618: E/AndroidRuntime(4298):  at android.os.Handler.dispatchMessage(Handler.java:102) 
11-16 23:27:27.618: E/AndroidRuntime(4298):  at android.os.Looper.loop(Looper.java:136) 
11-16 23:27:27.618: E/AndroidRuntime(4298):  at android.app.ActivityThread.main(ActivityThread.java:5001) 
11-16 23:27:27.618: E/AndroidRuntime(4298):  at java.lang.reflect.Method.invokeNative(Native Method) 
11-16 23:27:27.618: E/AndroidRuntime(4298):  at java.lang.reflect.Method.invoke(Method.java:515) 
11-16 23:27:27.618: E/AndroidRuntime(4298):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785) 
11-16 23:27:27.618: E/AndroidRuntime(4298):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601) 
11-16 23:27:27.618: E/AndroidRuntime(4298):  at dalvik.system.NativeStart.main(Native Method) 
11-16 23:27:27.618: E/AndroidRuntime(4298): Caused by: java.lang.NullPointerException 
11-16 23:27:27.618: E/AndroidRuntime(4298):  at edu.uco.clam.onyourbike_chapter7.activities.BaseActivity.setupActionBar(BaseActivity.java:57) 
11-16 23:27:27.618: E/AndroidRuntime(4298):  at edu.uco.clam.onyourbike_chapter7.activities.BaseActivity.onCreate(BaseActivity.java:85) 
11-16 23:27:27.618: E/AndroidRuntime(4298):  at edu.uco.clam.onyourbike_chapter7.activities.TimerActivity.onCreate(TimerActivity.java:65) 
11-16 23:27:27.618: E/AndroidRuntime(4298):  at android.app.Activity.performCreate(Activity.java:5231) 
11-16 23:27:27.618: E/AndroidRuntime(4298):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087) 
11-16 23:27:27.618: E/AndroidRuntime(4298):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2148) 
11-16 23:27:27.618: E/AndroidRuntime(4298):  ... 11 more 

вот BaseActivity Файл:

public class BaseActivity extends Activity { 

private static String CLASS_NAME; 

private NightMode nightMode; 
private Notify notify; 

public boolean canGoHome = true; 

public BaseActivity() { 
    CLASS_NAME = getClass().getName(); 
} 

@TargetApi(Build.VERSION_CODES.HONEYCOMB) 
private void setupActionBar() { 
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) { 
     ActionBar actionBar = getActionBar(); 
     actionBar.setDisplayHomeAsUpEnabled(canGoHome); 
    } 
} 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 

    // Make sure we do nothing silly! 
    if (BuildConfig.DEBUG) { 
     StrictMode.setThreadPolicy(new StrictMode.ThreadPolicy.Builder() 
       .detectAll().penaltyLog().build()); 

     StrictMode.setVmPolicy(new StrictMode.VmPolicy.Builder() 
       .detectAll().penaltyLog().penaltyDeath().build()); 
    } 

    int themeID = getIntent().getIntExtra("Theme", -1); 
    if (themeID != -1) { 
     setTheme(themeID); 
    } 
    boolean isLightTheme = getIntent() 
      .getBooleanExtra("isLightTheme", true); 

    notify = new Notify(this); 

    nightMode = new NightMode(getWindow(), this, true, isLightTheme); 

    setupActionBar(); 
} 

@Override 
public void onResume() { 
    super.onResume(); 

    // nightMode.startSensing(); 
} 

@Override 
public void onPause() { 
    super.onPause(); 

    // nightMode.stopSensing(); 
} 

private void gotoRoutes() { 
    Log.d(CLASS_NAME, "gotoRoutes"); 

    Intent routes = new Intent(this, RoutesActivity.class); 

    startActivity(routes); 
} 

/** 
* Called when the settings button is clicked on. 
* 
* @param view 
* the button clicked on 
*/ 
public void gotoSettings(View view) { 
    Log.d(CLASS_NAME, "gotoSettings"); 

    Intent settings = new Intent(this, SettingsActivity.class); 

    startActivity(settings); 
} 

private void gotoHome() { 
    Log.d(CLASS_NAME, "gotoHome"); 

    Intent timer = new Intent(this, TimerActivity.class); 
    timer.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); 

    startActivity(timer); 
} 

public void gotoMap() { 
    Log.d(CLASS_NAME, "gotoMap"); 

    Intent map = new Intent(this, MapActivity.class); 

    startActivity(map); 
} 

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 
    switch (item.getItemId()) { 
    case android.R.id.home: 
     gotoHome(); 
     return true; 
    case R.id.menu_settings: 
     gotoSettings(null); 
     return true; 
    case R.id.menu_routes: 
     gotoRoutes(); 
     return true; 
    case R.id.menu_map: 
     gotoMap(); 
     return true; 
    default: 
     return super.onOptionsItemSelected(item); 
    } 
} 

public void goBack(View view) { 
    finish(); 
} 

public void notification(String title, String message) { 
    notify.notify(title, message); 
} 

}

здесь файл TimerActivity:

public class TimerActivity extends BaseActivity { 

private static String CLASS_NAME; 

private static long UPDATE_EVERY = 200; 

private TextView counter; 
private Button start; 
private Button stop; 
private Handler handler; 
private Vibrator vibrate; 
private UpdateTimer updateTimer; 
private final TimerState timer; 
private long lastSeconds; 

public TimerActivity() { 
    CLASS_NAME = getClass().getName(); 
    timer = new TimerState(); 
    canGoHome = false; 
} 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 

    Log.d(CLASS_NAME, "onCreate"); 

    setContentView(R.layout.activity_timer); 

    // NOTE findViewById must be called after setContentView or we'll get an 
    // RTE 
    counter = (TextView) findViewById(R.id.timer); 
    start = (Button) findViewById(R.id.start_button); 
    stop = (Button) findViewById(R.id.stop_button); 

    // NOTE some phone and tablets may not vibrate 
    vibrate = (Vibrator) getSystemService(VIBRATOR_SERVICE); 

    if (vibrate == null) { 
     Log.w(CLASS_NAME, "No vibration service exists."); 
    } 

    timer.reset(); 

    stayAwakeOrNot(); 
} 

// Note must be public or RTE 

/** 
* Called when the start button is clicked on. 
* 
* @param view 
* the button clicked on 
*/ 
public void clickedStart(View view) { 
    Log.d(CLASS_NAME, "clickedStart"); 

    timer.start(); 

    enableButtons(); 

    handler = new Handler(); 
    updateTimer = new UpdateTimer(this); 
    handler.postDelayed(updateTimer, UPDATE_EVERY); 

    lastSeconds = -1; // for initial notification 
} 

/** 
* Called when the stop button is clicked on. 
* 
* @param view 
* the button click on 
*/ 
public void clickedStop(View view) { 
    Log.d(CLASS_NAME, "clickedStop"); 

    timer.stop(); 

    enableButtons(); 

    handler.removeCallbacks(updateTimer); 
    updateTimer = null; 
    handler = null; 
} 

@Override 
public void onStart() { 
    super.onStart(); 
    Log.d(CLASS_NAME, "onStart"); 

    if (timer.isRunning()) { 
     handler = new Handler(); 
     updateTimer = new UpdateTimer(this); 
     handler.postDelayed(updateTimer, UPDATE_EVERY); 
    } 
} 

/** 
* Enable/disable the stop and start buttons 
*/ 
protected void enableButtons() { 
    Log.d(CLASS_NAME, "enableButtons"); 

    start.setEnabled(!timer.isRunning()); 
    stop.setEnabled(timer.isRunning()); 
} 

/** 
* Change the counter text view to display the current formatted time 
*/ 
protected void setTimeDisplay() { 
    Log.d(CLASS_NAME, "setTimeDisplay"); 

    counter.setText(timer.display()); 
} 

@Override 
public void onResume() { 
    super.onResume(); 
    Log.d(CLASS_NAME, "onResume"); 
    enableButtons(); 
    setTimeDisplay(); 
} 

@Override 
public void onPause() { 
    super.onPause(); 
    Log.d(CLASS_NAME, "onPause"); 
} 

@Override 
public void onStop() { 
    super.onStop(); 
    Log.d(CLASS_NAME, "onStop"); 

    Settings settings = ((OnYourBike) getApplication()).getSettings(); 

    if (timer.isRunning()) { 
     handler.removeCallbacks(updateTimer); 
     updateTimer = null; 
     handler = null; 
    } 

    if (settings.isCaffeinated(this)) { 
     PowerManager powerManager = (PowerManager) getSystemService(Context.POWER_SERVICE); 
     PowerManager.WakeLock wakeLock = powerManager.newWakeLock(
       PowerManager.FULL_WAKE_LOCK, CLASS_NAME); 

     if (wakeLock.isHeld()) { 
      wakeLock.release(); 
     } 
    } 
} 

@Override 
public void onDestroy() { 
    super.onDestroy(); 
    Log.d(CLASS_NAME, "onDestroy"); 
} 

@Override 
public void onRestart() { 
    super.onRestart(); 
    Log.d(CLASS_NAME, "onRestart"); 
} 

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
    Log.d(CLASS_NAME, "onCreateOptionsMenu"); 

    getMenuInflater().inflate(R.menu.activity_main, menu); 

    return true; 
} 

/** 
* Keep the screen on depending on the stay awake setting 
*/ 
protected void stayAwakeOrNot() { 
    Log.d(CLASS_NAME, "stayAwakeOrNot"); 

    Settings settings = ((OnYourBike) getApplication()).getSettings(); 

    if (settings.isCaffeinated(this)) { 
     // Log.i(CLASS_NAME, "Staying awake"); 
     getWindow() 
       .addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 
    } else { 
     // Log.i(CLASS_NAME, "Not staying awake"); 
     getWindow().clearFlags(
       WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 
    } 
} 

// NOTE could be an anonymous inner class - easier to understand this way 
class UpdateTimer implements Runnable { 

    Activity activity; 

    public UpdateTimer(Activity activity) { 
     this.activity = activity; 
    } 

    /** 
    * Updates the counter display and vibrated if needed 
    */ 
    public void run() { 
     // Log.d(CLASS_NAME, display); 
     Settings settings = ((OnYourBike) getApplication()).getSettings(); 

     setTimeDisplay(); 

     if (timer.isRunning()) { 
      if (settings.isVibrateOn(activity)) { 
       vibrateCheck(); 
      } 
      notifyCheck(); 
     } 

     stayAwakeOrNot(); 

     if (handler != null) { 
      handler.postDelayed(this, UPDATE_EVERY); 
     } 
    } 

    protected void vibrateCheck() { 
     long seconds; 
     long minutes; 

     Log.d(CLASS_NAME, "vibrateCheck"); 

     timer.elapsedTime(); 
     seconds = timer.seconds(); 
     minutes = timer.minutes(); 

     // NOTE done this way to avoid Array/ArrayList issues 
     // NOTE hasVibrator() only on API 11+ 
     // NOTE try/catch to stop force close on emulator 
     // NOTE very easy to get manifest wrong! 
     try { 
      // NOTE seconds != lastSeconds so it only vibrates once/second 
      if (vibrate != null && seconds == 0 && seconds != lastSeconds) { 
       long[] once = { 0, 100 }; 
       long[] twice = { 0, 100, 400, 100 }; 
       long[] thrice = { 0, 100, 400, 100, 400, 100 }; 

       // every hour 
       if (minutes == 0) { 
        Log.i(CLASS_NAME, "Vibrate 3 times"); 
        vibrate.vibrate(thrice, -1); 
       } 
       // every 15 minutes 
       else if (minutes % 15 == 0) { 
        Log.i(CLASS_NAME, "Vibrate 2 time"); 
        vibrate.vibrate(twice, -1); 
       } 
       // every 5 minutes 
       else if (minutes % 5 == 0) { 
        Log.i(CLASS_NAME, "Vibrate once"); 
        vibrate.vibrate(once, -1); 
       } 
      } 
     } catch (Exception e) { 
      Log.w(CLASS_NAME, "Exception: " + e.getMessage()); 
     } 

     lastSeconds = seconds; 
    } 

    protected void notifyCheck() { 
     long seconds; 
     long minutes; 
     long hours; 

     Log.d(CLASS_NAME, "notifyCheck"); 

     timer.elapsedTime(); 
     seconds = timer.seconds(); 
     minutes = timer.minutes(); 
     hours = timer.hours(); 

     if (minutes % 15 == 0 && seconds == 0 && seconds != lastSeconds) { 
      String title = getResources().getString(R.string.time_title); 
      String message = getResources().getString(
        R.string.time_running_message); 

      if (hours == 0 && minutes == 0) { 
       message = getResources().getString(
         R.string.time_start_message); 
      } 

      message = String.format(message, hours, minutes); 

      notification(title, message); 
     } 

     lastSeconds = seconds; 
    } 
    } 
} 

Answer 1

CLASS_NAME, кажется пустым.

замыкающих строки журнала теги окончательные и инициализировать его в момент декларации:

private static final String CLASS_NAME = TimerActivity.class.getName(); 

P.S. почему вы переопределяете конструктор? в качестве TimerState объекта является окончательным и не требует какого-либо Params, вы можете создать его в момент объявления и начальной работе может быть сделано в onCreate методе, а не в конструкторе