ボタンをクリックした後にアプリケーションがクラッシュする

Question

私は自分のアプリケーションにログインしました。 私の開始アクティビティはLoginActivityです。 毎回、私はログインボタンをクリックすると私のアプリがクラッシュするアプリケーションを入力するために私のアカウントの資格情報を記入したとき。これは私のエラーですログ：

01-13 15:49:23.752 3116-3408/? E/InputReader: QEEXO fs_classify_touch NULL, not calling FingerSense 
01-13 15:49:23.887 3116-3408/? E/InputReader: QEEXO fs_touch_up NULL, not calling FingerSense 
01-13 15:49:23.923 2475-2475/? E/HAL: load: id=gralloc != hmi->id=gralloc 
01-13 15:49:23.938 3116-3130/? E/ReportTools: This is not beta user build 
01-13 15:49:23.969 3116-3407/? E/InputDispatcher: channel '2f67413 com.example.hartl.main_pp/com.example.hartl.main_pp.LoginActivity (server)' ~ Channel is unrecoverably broken and will be disposed! 
01-13 15:49:23.974 3116-3126/? E/HsmCoreServiceImpl: onTransact in code is: 102 
01-13 15:49:24.005 4043-4187/? E/HwLauncher: SettingsEx , no such field. 
01-13 15:49:24.018 18188-18208/? E/TotemWeather: WidgetUtils getWidgetShowCityInfo return myLocation 
01-13 15:49:24.073 2475-2475/? E/HAL: load: id=gralloc != hmi->id=gralloc 
01-13 15:49:24.123 2475-2475/? E/HAL: load: id=gralloc != hmi->id=gralloc 
01-13 15:49:24.262 2475-2475/? E/hwcomposer: setGpuBoost:228: Can't open /sys/class/devfreq/gpufreq/max_freq: Permission denied 
01-13 15:49:24.605 2475-2475/? E/HAL: load: id=gralloc != hmi->id=gralloc 

誰かが解決策を知っていますか？ おかげ

Answer 1

これは私のMainActivity

パブリッククラスMainActivityはAppCompatActivity がNavigationView.OnNavigationItemSelectedListener、OnMapReadyCallback { プライベートのTextView txtNameを実装して拡張します。 プライベートTextView txtEmail; プライベートボタンbtnLogout;

private SQLiteHandler db; 
private SessionManager session; 

private GoogleMap googleMap; 

SupportMapFragment sMapfragment; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
    txtName = (TextView) findViewById(R.id.name); 
    txtEmail = (TextView) findViewById(R.id.email); 

    // SqLite database handler 
    db = new SQLiteHandler(getApplicationContext()); 

    // session manager 
    session = new SessionManager(getApplicationContext()); 


    // Fetching user details from sqlite 
    HashMap<String, String> user = db.getUserDetails(); 

    String name = user.get("name"); 
    String email = user.get("email"); 

    // Displaying the user details on the screen 
    txtName.setText(name); 
    txtEmail.setText(email); 

    // Logout button click event 



















    sMapfragment = SupportMapFragment.newInstance(); 

    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); 
    setSupportActionBar(toolbar); 





    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout); 
    ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
      this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close); 
    drawer.setDrawerListener(toggle); 
    toggle.syncState(); 

    NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view); 
    navigationView.setNavigationItemSelectedListener(this); 
    sMapfragment.getMapAsync(this); 

    if (ContextCompat.checkSelfPermission(this, android.Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) { 
     if (ActivityCompat.shouldShowRequestPermissionRationale((Activity) this, android.Manifest.permission.ACCESS_FINE_LOCATION)) { 
      AlertDialog.Builder alertBuilder = new AlertDialog.Builder(this); 
      alertBuilder.setCancelable(false); 
      alertBuilder.setTitle("Permission necessary"); 
      alertBuilder.setMessage("Fine Location is necessary"); 
      alertBuilder.setPositiveButton(android.R.string.yes, new DialogInterface.OnClickListener() { 

       @TargetApi(Build.VERSION_CODES.JELLY_BEAN) 
       public void onClick(DialogInterface dialog, int which) { 
        ActivityCompat.requestPermissions(MainActivity.this, new String[]{android.Manifest.permission.ACCESS_FINE_LOCATION}, 1234); 
       } 
      }); 

      AlertDialog alert = alertBuilder.create(); 
      alert.show(); 
     } else { 
      ActivityCompat.requestPermissions(MainActivity.this, new String[]{android.Manifest.permission.ACCESS_FINE_LOCATION}, 1234); 
     } 

    } 





} 





@Override 
public void onBackPressed() { 
    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout); 
    if (drawer.isDrawerOpen(GravityCompat.START)) { 
     drawer.closeDrawer(GravityCompat.START); 
    } else { 
     super.onBackPressed(); 
    } 
} 


@Override 
public boolean onOptionsItemSelected(MenuItem item) { 

    int id = item.getItemId(); 


    return super.onOptionsItemSelected(item); 
} 

@SuppressWarnings("StatementWithEmptyBody") 
@Override 
public boolean onNavigationItemSelected(MenuItem item) { 
    android.support.v4.app.FragmentManager sFm = getSupportFragmentManager(); 
    int id = item.getItemId(); 

    if (sMapfragment.isAdded()) 
     sFm.beginTransaction().hide(sMapfragment).commit(); 
    if (id == R.id.nav_map) { 
     if (!sMapfragment.isAdded()) 

      sFm.beginTransaction().add(R.id.penats, sMapfragment).commit(); 
     else 
      sFm.beginTransaction().show(sMapfragment).commit(); 

    } else if (id == R.id.nav_locations) { 

    } else if (id == R.id.nav_events) { 

    } else if (id == R.id.nav_calendar) { 

    } else if (id == R.id.nav_chat) { 

    } else if (id == R.id.nav_ranking) { 

    } 
    DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout); 
    drawer.closeDrawer(GravityCompat.START); 
    return true; 
} 

@SuppressWarnings("ResourceType") 
@Override 
public void onMapReady(GoogleMap googleMap) { 

    googleMap.setMyLocationEnabled(true); 
} 

}