マニフェストで親アクティビティが定義されていても、アプリケーションは戻ってこない

Question

ツールバーを定義して初期化しました。それはうまく動作します。私もセット：

mToolBar = (Toolbar) findViewById(R.id.create_acc_tool); 
setSupportActionBar(mToolBar); 
getSupportActionBar().setTitle("Create An Account"); 
getSupportActionBar().setDisplayHomeAsUpEnabled(true); 

とマニフェストにそれぞれの親アクティビティを定義した：

<activity android:name=".activities.LoginEmail" 
    android:parentActivityName=".activities.LoginActivity" 
    android:theme="@style/AppTheme.NoActionBar"> 
</activity> 

をしかし、私は背中にクリックしたときに、それだけでアプリを終了し、私はそれが

をクラッシュしないと思いますログキャスト：

08-31 16:53:03.473 4961-5410/? D/NetworkController.MobileSignalController(4): onSignalStrengthsChanged signalStrength=SignalStrength: 7 0 -120 -160 -120 -1 -1 99 2147483647 2147483647 2147483647 2147483647 2147483647 3 3 gsm|lte level=3 voicelevel=3 datalevel=3 
08-31 16:53:04.050 535-535/? I/MSM-irqbalance: Decided to move IRQ65 from CPU2 to CPU3 
08-31 16:53:04.078 5801-6546/? D/PhoneInterfaceManager: [PhoneIntfMgr] getDataEnabled: subId=4 phoneId=0 
08-31 16:53:04.079 5801-6546/? D/PhoneInterfaceManager: [PhoneIntfMgr] getDataEnabled: subId=4 retVal=false 
08-31 16:53:04.083 4961-5495/? D/TelephonyManager: getDataEnabled: retVal=false 
08-31 16:53:04.096 5801-12753/? D/PhoneInterfaceManager: [PhoneIntfMgr] getDataEnabled: subId=4 phoneId=0 
08-31 16:53:04.096 5801-12753/? D/PhoneInterfaceManager: [PhoneIntfMgr] getDataEnabled: subId=4 retVal=false 
08-31 16:53:04.097 4961-5495/? D/TelephonyManager: getDataEnabled: retVal=false 
08-31 16:53:04.307 4961-4961/? I/StatusBarIconController: appTransitionPending 
08-31 16:53:04.314 11083-11248/example.com.groupeasy E/AbstractTracker: Can't create handler inside thread that has not called Looper.prepare() 
08-31 16:53:04.314 11083-11248/example.com.groupeasy D/AppTracker: App Event: stop 
08-31 16:53:04.320 4961-4961/? I/StatusBarIconController: appTransitionPending 
08-31 16:53:04.321 11083-16846/example.com.groupeasy V/FA: Recording user engagement, ms: 3904 
08-31 16:53:04.325 11083-16846/example.com.groupeasy V/FA: Activity paused, time: 281595996 
08-31 16:53:04.332 11083-16846/example.com.groupeasy D/FA: Logging event (FE): _e, Bundle[{_o=auto, _et=3904, _sc=LoginEmail, _si=7142922541270458076}] 
08-31 16:53:04.384 5315-16849/? V/FA-SVC: Logging event: origin=auto,name=user_engagement(_e),params=Bundle[{firebase_event_origin(_o)=auto, engagement_time_msec(_et)=3904, firebase_screen_class(_sc)=LoginEmail, firebase_screen_id(_si)=7142922541270458076}] 
08-31 16:53:04.394 4961-4961/? I/StatusBarIconController: appTransitionStarting 
08-31 16:53:04.395 5315-16849/? V/FA-SVC: Saving event, name, data size: user_engagement(_e), 65 
08-31 16:53:04.396 5315-16849/? V/FA-SVC: Event recorded: Event{appId='example.com.groupeasy', name='user_engagement(_e)', params=Bundle[{firebase_event_origin(_o)=auto, engagement_time_msec(_et)=3904, firebase_screen_class(_sc)=LoginEmail, firebase_screen_id(_si)=7142922541270458076}]} 
08-31 16:53:04.398 5315-16849/? V/FA-SVC: Upload scheduled in approximately ms: 205375 
08-31 16:53:04.398 11083-11083/example.com.groupeasy V/FA: onActivityCreated 
08-31 16:53:04.401 5315-16849/? V/FA-SVC: Scheduling upload with AlarmManager 
08-31 16:53:04.406 5315-16849/? V/FA-SVC: Background event processing time, ms: 22 
08-31 16:53:04.452 11083-11250/example.com.groupeasy E/AbstractTracker: Can't create handler inside thread that has not called Looper.prepare() 
08-31 16:53:04.452 11083-11250/example.com.groupeasy D/AppTracker: App Event: start 

Answer 1

属性を使用すると、コードチェックが行われますonOptionsItemSelected方法のandroid.R.id.home。

だから、あなたのようなもので、それをチェックする必要があります。

@Override 
public boolean onOptionsItemSelected(MenuItem item) { 
    switch (item.getItemId()) { 
    // Respond to the action bar's Up/Home button 
    case android.R.id.home: 
    NavUtils.navigateUpFromSameTask(this); 
    return true; 
    } 
    return super.onOptionsItemSelected(item); 
} 

Navigate Up To Parent Activityで続きを読みます。