Android 显示 WebView ，加载URL 时，向webview的 header 里面传递参数
1、主要布局
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context=".MainActivity">
<WebView
android:id="@+id/webview"
android:layout_width="match_parent"
android:layout_height="match_parent">
</WebView>
</RelativeLayout>
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 @Override
20 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<String, String > map = new HashMap<String, String>() ;
29 map.put( webViewHeaderKey , webViewHeaderValue ) ;
30
31 webView.loadUrl( url , map ) ;
32 }else {
33 webView.loadUrl( url ) ;
34 }
35
36 }
37 }
