1、主要布局 

 

2、代码实现

1 package com.webview.demo; 2  3 import android.os.Bundle; 4 import android.support.v7.app.AppCompatActivity; 5 import android.webkit.WebView; 6  7 import java.util.HashMap; 8 import java.util.Map; 9 10 public class MainActivity extends AppCompatActivity {11 12     private WebView webView ;13 14     private String webViewHeaderKey = "tokenId" ;15     private String webViewHeaderValue = "562142" ;16 17     private String url = "" ;18 19     @Override20     protected void onCreate(Bundle savedInstanceState) {21         super.onCreate(savedInstanceState);22         setContentView(R.layout.activity_main);23 24         webView = (WebView) findViewById( R.id.webview );25 26 27         if ( webViewHeaderValue != "" ){28             Map
     
       map = new HashMap
      
       () ;29             map.put( webViewHeaderKey , webViewHeaderValue ) ;30 31             webView.loadUrl( url  , map ) ;32         }else {33             webView.loadUrl( url ) ;34         }35 36     }37 }