Andriod 中打开WebView

今天了解了一下Andiod的WebView方面的知识，感觉非常的神奇。我发现我知道的东西还是太少了，还是要Good Good Study，Day Day Up。

这篇博客是参考雨松MOMO的博客Unity3D研究院之在Android中打开WebView（三十） ，向大神致敬！此处省略几百万字。。。

第一步：首先在unity导出的andriod工程的UnityPlayerNativeActivity.java文件中，加入一个StartWebView函数，方便游戏中直接调用。

package com.dong.mymta;import com.unity3d.player.*;import android.app.NativeActivity;import android.content.Intent;import android.content.res.Configuration;import android.graphics.PixelFormat;import android.os.Bundle;import android.view.KeyEvent;import android.view.View;import android.view.Window;import android.view.WindowManager;public class UnityPlayerNativeActivity extends NativeActivity{protected UnityPlayer mUnityPlayer;// don't change the name of this variable; referenced from native code// UnityPlayer.init() should be called before attaching the view to a layout - it will load the native code.// UnityPlayer.quit() should be the last thing called - it will unload the native code.protected void onCreate (Bundle savedInstanceState){requestWindowFeature(Window.FEATURE_NO_TITLE);super.onCreate(savedInstanceState);getWindow().takeSurface(null);setTheme(android.R.style.Theme_NoTitleBar_Fullscreen);getWindow().setFormat(PixelFormat.RGB_565);mUnityPlayer = new UnityPlayer(this);if (mUnityPlayer.getSettings ().getBoolean ("hide_status_bar", true))getWindow ().setFlags (WindowManager.LayoutParams.FLAG_FULLSCREEN,                       WindowManager.LayoutParams.FLAG_FULLSCREEN);int glesMode = mUnityPlayer.getSettings().getInt("gles_mode", 1);boolean trueColor8888 = false;mUnityPlayer.init(glesMode, trueColor8888);View playerView = mUnityPlayer.getView();setContentView(playerView);playerView.requestFocus();}//Unity中会调用这个方法，从而开打WebView public void StartWebView(String url) {             Intent intent = new Intent(UnityPlayerNativeActivity.this,WebViewActivity.class);             intent.putExtra("url", url);             this.startActivity(intent); }}

Intent 这个类不太清楚的可以看下这篇博客，Android Intent Action ，这里面有将这个类的一些用途，值得一看。。。

第二步，只要是WebViewActivity.java这个类

package com.dong.mymta;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.webkit.WebView;import android.widget.Button;public class WebViewActivity extends Activity{private WebView webView;private Button close;@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState); setContentView(R.layout.main); String url = this.getIntent().getStringExtra("url");webView = (WebView) findViewById(R.id.webView);webView.loadUrl(url);        webView.getSettings().setJavaScriptEnabled(true);webView.setWebViewClient(new WebViewClient()); close = (Button) findViewById(R.id.button);close.setOnClickListener(new OnClickListener() { @Overridepublic void onClick(View v) {WebViewActivity.this.finish(); }});}private class WebViewClient extends android.webkit.WebViewClient {@Overridepublic boolean shouldOverrideUrlLoading(WebView view, String url) {//这里实现的目标是在网页中继续点开一个新链接，还是停留在当前程序中view.loadUrl(url);return super.shouldOverrideUrlLoading(view, url); }}}

WebViewActivity.java里面的界面需要在layout配置文件main.xml中给出

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical" >   <WebView            android:id="@+id/webView"            android:layout_width="fill_parent"            android:layout_height="wrap_content"            android:layout_weight="1.0"            />       <Button            android:id="@+id/button"            android:text="关闭网页"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            />   </LinearLayout>

具体界面如图所示

                         

图中的WebViewj就是显示范围，可以自己调整。

第三部，修改配置文件AndriodManifest.xml

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.dong.mymta" android:theme="@android:style/Theme.NoTitleBar" android:versionName="1.0" android:versionCode="1" android:installLocation="preferExternal">  <supports-screens android:smallScreens="true" android:normalScreens="true" android:largeScreens="true" android:xlargeScreens="true" android:anyDensity="true" />  <application android:icon="@drawable/app_icon" android:label="@string/app_name" android:debuggable="false">    <activity android:label="@string/app_name" android:screenOrientation="portrait" android:launchMode="singleTask" android:configChanges="mcc|mnc|locale|touchscreen|keyboard|keyboardHidden|navigation|orientation|screenLayout|uiMode|screenSize|smallestScreenSize|fontScale" android:name="com.dong.mymta.UnityPlayerNativeActivity">      <intent-filter>        <action android:name="android.intent.action.MAIN" />        <category android:name="android.intent.category.LAUNCHER" />      </intent-filter>      <meta-data android:name="unityplayer.UnityActivity" android:value="true" />      <meta-data android:name="unityplayer.ForwardNativeEventsToDalvik" android:value="false" />    </activity>        <span style="color:#ff0000;"><activity            android:name=".WebViewActivity">    </activity></span>      </application>  <uses-sdk android:minSdkVersion="9" android:targetSdkVersion="17" />  <uses-feature android:glEsVersion="0x00020000" />     <!-- 连接互联网的权限 -->  <span style="color:#ff0000;"><uses-permission android:name="android.permission.INTERNET" /></span></manifest>

第四步，andriod环境下的东西已经搞定了，接下来就在unity中调用StartWebView这个函数了。

using UnityEngine;using UnityEngine;using System.Collections;public class Test2 : MonoBehaviour {    public string url = "http://www.baidu.com";    void OnGUI()    {        if (GUI.Button(new Rect(300, 200, 100, 60), "Open World"))        {            if (Application.platform == RuntimePlatform.Android)            {                AndroidJavaClass jc = new AndroidJavaClass("com.unity3d.player.UnityPlayer");                AndroidJavaObject jo = jc.GetStatic<androidjavaobject>("currentActivity");                jo.Call("StartWebView", url);            }        }    }}</androidjavaobject>

我们把要打开的链接传过去就能打开对应的网页了。接下来又到了上图的时候了。

。。。