prefs.putBoolean內onPageFinished

Question

我有成功的正確修正一個布爾值的狀態如下：

protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 

    wv = (WebView) findViewById(R.id.wv); 
    //Enable JavaScript 
    wv.getSettings().setJavaScriptEnabled(true); 
    wv.setFocusable(true); 
    wv.setFocusableInTouchMode(true); 
    //Set Render Priority To High 
    wv.getSettings().setRenderPriority(WebSettings.RenderPriority.HIGH); 
    wv.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE); 
    wv.getSettings().setDomStorageEnabled(true); 
    wv.getSettings().setDatabaseEnabled(true); 
    wv.getSettings().setAppCacheEnabled(true); 
    wv.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY); 

    //Load Url 
    wv.loadUrl("https://str8red.com/"); 
    wv.setWebViewClient(new myWebClient()); 

    SharedPreferences.Editor prefs = PreferenceManager.getDefaultSharedPreferences(this).edit(); 
    prefs.putBoolean("notifications_team_pick",false); 
    prefs.putBoolean("notifications_results", false); 

    prefs.commit(); 

} 

然而，當我想在內部它下面的錯誤代碼onPageFinished設置布爾狀態：

public class myWebClient extends WebViewClient { 

    @Override 
    public void onPageFinished(WebView view, String url) { 
     // TODO Auto-generated method stub 
     super.onPageFinished(view, url); 

     String CurrentURL = wv.getUrl(); 

     if (CurrentURL == "https://str8red.com/") { 
      wv.evaluateJavascript("fromAndroid()", new ValueCallback<String>() { 
       @Override 
       public void onReceiveValue(String value) { 
        String[] separated = value.split(" "); 
        //separated[0]; // logged in True Or False 
        //separated[1]; // Notifications 1 or 0 
        //separated[2]; // More Notifications or 1 or 0 
        String loggedIn = separated[0].replace("\"", ""); 
        String Notify1 = separated[1].replace("\"", ""); 
        String Notify2 = separated[2].replace("\"", ""); 

        SharedPreferences.Editor prefs = PreferenceManager.getDefaultSharedPreferences(this).edit(); 
        prefs.putBoolean("notifications_team_pick",false); 
        prefs.putBoolean("notifications_results", true); 

        prefs.commit(); 
       } 
      }); 
     } 
    } 
} 

結束遊戲是讓「Notify1」和「Notify2」設置布爾狀態。但是第一步只是在onPageFinished運行之後設置布爾的狀態。

我希望我已經解釋好自己，任何幫助將不勝感激。非常感謝，艾倫。

完整代碼：

package com.str8red.str8red; 

import android.content.Intent; 
import android.content.SharedPreferences; 
import android.os.Bundle; 
import android.preference.PreferenceManager; 
import android.support.v7.app.AppCompatActivity; 
import android.view.View; 
import android.webkit.ValueCallback; 
import android.webkit.WebSettings; 
import android.webkit.WebView; 
import android.webkit.WebViewClient; 


public class MainActivity extends AppCompatActivity { 
    WebView wv; 
    Boolean fish; 
    Boolean shark; 

    // When Back Pressed Go Back 
    @Override 
    public void onBackPressed() { 
     if (wv.canGoBack()) { 
      wv.goBack(); 
     } else { 
      super.onBackPressed(); 
     } 
    } 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.activity_main); 

     wv = (WebView) findViewById(R.id.wv); 
     //Enable JavaScript 
     wv.getSettings().setJavaScriptEnabled(true); 
     wv.setFocusable(true); 
     wv.setFocusableInTouchMode(true); 
     //Set Render Priority To High 
     wv.getSettings().setRenderPriority(WebSettings.RenderPriority.HIGH); 
     wv.getSettings().setCacheMode(WebSettings.LOAD_NO_CACHE); 
     wv.getSettings().setDomStorageEnabled(true); 
     wv.getSettings().setDatabaseEnabled(true); 
     wv.getSettings().setAppCacheEnabled(true); 
     wv.setScrollBarStyle(View.SCROLLBARS_INSIDE_OVERLAY); 

     //Load Url 
     wv.loadUrl("https://str8red.com/"); 
     // wv.setWebViewClient(new myWebClient()); 
     wv.setWebViewClient(new myWebClient(this)); 

     SharedPreferences.Editor prefs = PreferenceManager.getDefaultSharedPreferences(this).edit(); 
     prefs.putBoolean("notifications_team_pick",false); 
     prefs.putBoolean("notifications_results", false); 

     prefs.commit(); 


    } 



    public class myWebClient extends WebViewClient { 

     private Context context; 

     public myWebClient(Context context) { 
      this.context = context; 
     } 

     @Override 
     public void onPageFinished(WebView view, String url) { 
      // TODO Auto-generated method stub 
      super.onPageFinished(view, url); 

      String CurrentURL = wv.getUrl(); 

      if (CurrentURL == "https://str8red.com/") { 
       wv.evaluateJavascript("fromAndroid()", new ValueCallback<String>() { 
        @Override 
        public void onReceiveValue(String value) { 
         String[] separated = value.split(" "); 
         //separated[0]; // logged in True Or False 
         //separated[1]; // Notifications 1 or 0 
         //separated[2]; // More Notifications or 1 or 0 
         String loggedIn = separated[0].replace("\"", ""); 
         String Notify1 = separated[1].replace("\"", ""); 
         String Notify2 = separated[2].replace("\"", ""); 

         SharedPreferences.Editor prefs = PreferenceManager.getDefaultSharedPreferences(context).edit(); 
         prefs.putBoolean("notifications_team_pick",false); 
         prefs.putBoolean("notifications_results", true); 

         prefs.commit(); 
        } 
       }); 
      } 
     } 
    } 

    //Settings Button 
    public void btnSettings_onClick(View view) { 
     Intent intent=new Intent(this,SettingsActivity.class); 
     startActvity(intent); 
    } 

    private void startActvity(Intent intent) { 
     startActivity(intent); 
    } 
    //End of Settings Button 

    //Play Button 

    public void btnPlay_onClick(View view) { 
     wv.loadUrl("https://str8red.com/selectteams/0/0"); 
     wv.setWebViewClient(new myWebClient()); 
    } 
    //End of Play Button 

} 

Answer 1

你應該通過一個context作爲參數在PreferenceManager.getDefaultSharedPreferences(context)。

您要通過的this是WebViewClient。

有一個接受myWebClient中Context的構造函數。

private Context context; 

public myWebClient(Context context) { 
    this.context = context; 
} 

@Override 
public void onPageFinished(WebView view, String url) { 
..... 

    SharedPreferences.Editor prefs = PreferenceManager.getDefaultSharedPreferences(context).edit(); 

} 

又通方面同時創造WebViewClient：

wv.setWebViewClient(new myWebClient(this));