子アクティビティを停止して親アクティビティに戻る

Question

子アクティビティを起動しているAndroidアクティビティがあります。子アクティビティはサーフェイスビューで実行されます。

子アクティビティの起動がうまくいき、ナビゲーションが起動します。しかし、彼らがSygicアプリケーションを終了すると、子アクティビティを閉じて、親アクティビティを表示するように戻したいと思います。ご覧のとおり、Finish（）メソッドでは、this.finish（）;およびgetParent（）。finish（）;どちらもうまくいきません。それだけでは、黒い画面が表示されます。私はそれが表面の見方だと推測しています。子アクティビティを正常に終了し、親アクティビティを再度表示するにはどのようなアイデアを得ることができますか？ここで

は、子アクティビティを起動するためのコードである：ここでは

NavigationActivity.SygicModule = this; 
     Log("Creating intent for navigation activity"); 
     Intent intent = new Intent(getActivity(), NavigationActivity.class); 
     Log("Starting navigation activity"); 
     getActivity().startActivity(intent); 

は、子ナビゲーションアクティビティビューのためのXMLです：

<?xml version="1.0" encoding="utf-8"?> 
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    android:orientation="vertical" 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:id="@+id/layout"> 
    <SurfaceView android:id="@+id/surfaceView" android:layout_height="match_parent" android:layout_width="match_parent"></SurfaceView> 
</LinearLayout> 

そしてここでは、子ナビゲーション活動のためのコードです：

package ti.sygic; 

public class NavigationActivity extends SygicDriveActivity { 

    private static final String LCAT = "SygicModule"; 
    private static SError error = new SError(); 
    private static Activity currentActivity = null; 
    public static SygicModule SygicModule; 

    private Handler mHandler = new Handler(); 

    /** Called when the activity is first created. */ 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     currentActivity = this; 
     super.onCreate(savedInstanceState); 
     try { 
      setContentView(TiRHelper.getApplicationResource("layout.sygicmain")); 
      final ApiCallback apicallback = new ApiCallback() { 
       public void onRunDrive() { 
        try { 
         final SurfaceView surface = (SurfaceView) findViewById(TiRHelper.getApplicationResource("id.surfaceView")); 

         mHandler.post(new Runnable() { 
          public void run() { 
           runDrive(surface, getPackageName()); // starts the drive app 
          } 
         }); 
        } catch (ResourceNotFoundException e) { 
         // TODO Auto-generated catch block 
         Log("Failed to find id.surfaceView!"); 
         e.printStackTrace(); 
        } // surface 

       } 

       public void onInitApi() // gets called after runDrive(); 
       { 
        // code to make sure that gps is enabled before initializing 
        Log("Checking that gps is enabled"); 
        String provider = "com.android.settings.widget.SettingsAppWidgetProvider"; 
        Criteria criteria = new Criteria(); 
        criteria.setAccuracy(Criteria.NO_REQUIREMENT); 
        criteria.setPowerRequirement(Criteria.NO_REQUIREMENT); 
        criteria.setCostAllowed(false); 
        ContentResolver contentResolver = getContentResolver(); 

        if (!Settings.Secure.isLocationProviderEnabled(contentResolver, LocationManager.GPS_PROVIDER)) { 
         Log("Gps is not enabled, showing gps settings"); 
         final Intent poke = new Intent(); 
         poke.setClassName("com.android.settings", provider); 
         poke.addCategory(Intent.CATEGORY_ALTERNATIVE); 
         poke.setData(Uri.parse("3")); 
         sendBroadcast(poke); 
        } 

        int status = ApplicationAPI.InitApi(getPackageName(), true, msgHandler); // api initialization 
        Log("Status = " + Integer.toString(status)); 

        if (status != 1) { 
         Log("InitApi failed! " + status); 
        } 
        else { 
         //start checking every second if application is running. if it isn't then finish this and parent activities. 
         //note: we wouldn't have to do this if APP_EXIT event actually fired. :(
         CheckIfRunning(); 
        } 
       } 
      }; 

      ApplicationAPI.startDrive(apicallback); 

     } catch (ResourceNotFoundException e1) { 
      Log("Failed to find resource!"); 
      e1.printStackTrace(); 
     } 
    } 

    public static void navigateTo(Float latitude, Float longitude) { 
     try 
     { 
      Log("navigateTo: " + latitude + "/" + longitude); 

      Integer lat = (int)(latitude * 100000); 
      Integer lon = (int)(longitude * 100000); 

      //start navigation. 
      Log("Starting navigation for " + lat + "/" + lon); 
      SWayPoint wayPoint = new SWayPoint(); 
      wayPoint.SetLocation(lat, lon); 
      ApplicationAPI.StartNavigation(error, wayPoint, 0, true, true, 0);//NavigationParams.NpMessageAvoidTollRoadsUnable 
      Log("Start navigation result: " + error.nCode + " " + error.GetDescription()); 

      //if waiting for gps, call in a bit. 
      if(error.nCode == -6) 
      { 
       Thread.sleep(5000); 
       navigateTo(latitude, longitude); 
      } 
     } 
     catch(Exception exc) 
     { 
      Log(exc.getMessage()); 
     } 
    } 

    final ApplicationHandler msgHandler = new ApplicationHandler() { 
     @Override 
     public void onApplicationEvent(int nEvent, String strData) { 
      Log("Event No. " + Integer.toString(nEvent) + " detected."); // event handling 
      switch (nEvent) { 
       case ApplicationEvents.EVENT_APP_EXIT: 
        Log("In EVENT_APP_EXIT event"); 
        Finish(); 
        break; 
       case ApplicationEvents.EVENT_WAIPOINT_VISITED: 
        Log("Waypoint visited."); 
        break; 
       case ApplicationEvents.EVENT_ROUTE_COMPUTED: 
        Log("Route computed."); 
        break; 
       case ApplicationEvents.EVENT_ROUTE_FINISH: 
        Log("Route finished."); 
        break; 
       case ApplicationEvents.EVENT_POI_WARNING: 
        Log("Poi warning!."); 
        break; 
       case ApplicationEvents.EVENT_CHANGE_LANGUAGE: 
        Log("Language changed."); 
        break; 
       case ApplicationEvents.EVENT_EXIT_MENU: 
        Log("Menu exited."); 
        break; 
       case ApplicationEvents.EVENT_MAIN_MENU: 
        Log("Entering main menu."); 
        break; 
       case ApplicationEvents.EVENT_BORDER_CROSSING: 
        Log("Crossing border."); 
      } 
     } 
    }; 

    private void CheckIfRunning() 
    { 
     new Thread(new Runnable() { 
      @Override 
      public void run() { 
       try 
       { 
        int numTimesNotRunning = 0; 
        while(true) 
        { 
         boolean isRunning = ApplicationAPI.IsApplicationRunning(error, 0) == 1; 
         if(isRunning) 
         { 
          Log("App is running, will check again in 2 seconds"); 
          numTimesNotRunning = 0; 
          Thread.sleep(2000); 
         } 
         else { 
          if(numTimesNotRunning < 3) 
          { 
           numTimesNotRunning++; 
           Log("App not running, num times " + numTimesNotRunning); 
           Thread.sleep(2000); 
          } 
          else 
           break; 
         } 
        } 
        Log("App is not running, calling sygicmodule finish!"); 
        Finish(); 
       } 
       catch(Exception exc) 
       { 
        Log(exc.getMessage()); 
       } 
      } 
     }).start(); 
    } 

    private void Finish() 
    { 
     Log("In NavigationActivity Finish"); 
     runOnUiThread(new Runnable() { 
      public void run() { 
       try 
       { 
        //launch parent activity. 
        Log("Starting parent activity"); 
        Intent intent = new Intent(currentActivity, SygicModule.getActivity().getClass()); 
        intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); 
        currentActivity.startActivity(intent); 
        //finish current activity. 
        Log("Finishing activity"); 
        //setContentView(null); 
        currentActivity.finish(); 
       } 
       catch(Exception exc) 
       { 
        Log(exc.getMessage()); 
       } 
      } 
     }); 
    } 

    private static void Log(String message) { 
     //org.appcelerator.kroll.common.Log.i(LCAT, message); 
     if(message != null && message.length() > 0) 
      android.util.Log.i(LCAT, message); 
    } 
} 

Answer 1

0123を呼び出すのではなく、親アクティビティを参照する必要がありますYourActivityClassName.this.finish();

すなわち

は、あなたの活動が終了する原因DriveEvent.EVENT_APP_EXIT上でこの呼び出しを追加してくださいとSygicはあなたから親アクティビティを開始しようとしないのはなぜ