Android：保存XWalkView - Crosswalk狀態

我正在使用XWalkView將移動網站顯示爲應用程序。我的問題是當應用程序進入背景並返回它重新加載它顯示的頁面。當它來自背景時，我想保持它的狀態並從該狀態繼續。這裏是我的代碼：Android：保存XWalkView - Crosswalk狀態

public class MainActivity extends AppCompatActivity { 

    static final String URL = "https://www.biletdukkani.com.tr"; 
    static final int MY_PERMISSIONS_REQUEST_ACCESS_LOCATION = 55; 
    static final String SHOULD_ASK_FOR_LOCATION_PERMISSION = "shouldAskForLocationPermission"; 
    static final String TAG = "MainActivity"; 
    static final String COMMAND = "/system/bin/ping -c 1 185.22.184.184"; 
    static XWalkView xWalkWebView; 
    TextView noInternet; 
    static Bundle stateBundle; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     Log.d(TAG, "onCreate"); 

     // Check whether we're recreating a previously destroyed instance 
     if (savedInstanceState != null) { 
      // Restore value of members from saved state 
      stateBundle = savedInstanceState.getBundle("xwalk"); 
     } 

     setContentView(R.layout.activity_main); 
     initNoInternetTextView(); 
    } 


    public void onRestoreInstanceState(Bundle savedInstanceState) { 
     // Always call the superclass so it can restore the view hierarchy 
     super.onRestoreInstanceState(savedInstanceState); 
     stateBundle = savedInstanceState.getBundle("xwalk"); 
     Log.d(TAG, "onRestoreInstanceState"); 
    } 


    /** 
    * İnternet yok mesajı gösteren TextVidew'i ayarlar. 
    */ 
    private void initNoInternetTextView() { 
     Log.d(TAG, "initNoInternetTextView"); 
     noInternet = (TextView) findViewById(R.id.no_internet); 
     if (noInternet != null) { 
      noInternet.setOnClickListener(new View.OnClickListener() { 
       @Override 
       public void onClick(View view) { 
        checkInternetConnection(); 
       } 
      }); 
     } 
    } 


    /** 
    * WebView'i ayarlar. 
    */ 
    private void initWebView() { 
     Log.d(TAG, "initWebView"); 
     if (xWalkWebView == null) { 
      ProgressBar progressBar = (ProgressBar) findViewById(R.id.progressBar); 
      xWalkWebView = (XWalkView) findViewById(R.id.webView); 
      //xWalkWebView.clearCache(true); 
      xWalkWebView.load(URL, null); 
      xWalkWebView.setResourceClient(new BDResourceClient(xWalkWebView, progressBar)); 
     } 
    } 


    @Override 
    protected void onResume() { 
     super.onResume(); 
     Log.d(TAG, "onResume"); 
     checkLocationPermissions(); 
     checkInternetConnection(); 

     if (xWalkWebView != null && stateBundle != null) { 
      xWalkWebView.restoreState(stateBundle); 
     } 
    } 


    @Override 
    protected void onPause() { 
     super.onPause(); 
     Log.d(TAG, "onPause"); 
     if (xWalkWebView != null) { 
      stateBundle = new Bundle(); 
      xWalkWebView.saveState(stateBundle); 
     } 
    } 


    public void onSaveInstanceState(Bundle savedInstanceState) { 
     Log.d(TAG, "onSaveInstanceState"); 
     // Save the user's current game state 
     savedInstanceState.putBundle("xwalk", stateBundle); 
     // Always call the superclass so it can save the view hierarchy state 
     super.onSaveInstanceState(savedInstanceState); 
    } 


    @Override 
    public void onBackPressed() { 
     Log.d(TAG, "onBackPressed"); 
     if (xWalkWebView != null && xWalkWebView.getNavigationHistory().canGoBack()) { 
      xWalkWebView.getNavigationHistory().navigate(XWalkNavigationHistory.Direction.BACKWARD, 1); 
     } else { 
      super.onBackPressed(); 
     } 
    } 
}

我也嘗試添加以下行來顯示，但沒有工作。

android:launchMode="singleTask" 
android:alwaysRetainTaskState="true"

我該怎麼做？非常感謝。

來源

2016-09-18 Olcay Ertaş

一種方法是在設置爲保留其實例的片段內初始化視圖。

來源

2016-11-30 20:46:07 shtolik

Android：保存XWalkView - Crosswalk狀態

回答

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