当我点击webvIEw页面内的按钮时出错.因此,当我点击按钮时,它将更改为谷歌网站.以下是代码和错误： –
MainActivity.java
package com.mt.nad.testwebapp;import androID.content.Context;import androID.support.v7.app.ActionBaractivity;import androID.os.Bundle;import androID.vIEw.Menu;import androID.vIEw.MenuItem;import androID.webkit.JavaScriptInterface;import androID.webkit.WebSettings;import androID.webkit.WebVIEw;import androID.webkit.WebVIEwClIEnt;import androID.Widget.TextVIEw;import androID.Widget.Toast;public class MainActivity extends ActionBaractivity {private WebVIEw webC;@OverrIDeprotected voID onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentVIEw(R.layout.activity_main); webC = (WebVIEw)findVIEwByID(R.ID.webVIEw1); webC.addJavaScriptInterface(new JavaScriptInterface(), "CallJavaAdapter"); webC.setWebVIEwClIEnt(new WebVIEwClIEnt()); WebSettings webS = webC.getSettings(); webS.setJavaScriptEnabled(true); webC.loadUrl("http://10.0.2.2/test-java-adapter/");} private class JavaScriptInterface{ JavaScriptInterface() { } @JavaScriptInterface public voID gotoSite() { //Toast.makeText(mContext, url, Toast.LENGTH_SHORT).show(); webC.clearCache(true); webC.loadUrl("http://Google.com"); }}@OverrIDepublic boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.menu_main, menu); return true;}@OverrIDepublic boolean onoptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroIDManifest.xml. int ID = item.getItemID(); //noinspection SimplifiableIfStatement if (ID == R.ID.action_settings) { return true; } return super.onoptionsItemSelected(item);}}activity_main.xml中
<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:paddingleft="@dimen/activity_horizontal_margin" androID:paddingRight="@dimen/activity_horizontal_margin" androID:paddingtop="@dimen/activity_vertical_margin" androID:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity"><TextVIEw androID:text="@string/hello_world" androID:layout_wIDth="wrap_content" androID:layout_height="wrap_content" androID:ID="@+ID/textVIEw" /><WebVIEw androID:layout_wIDth="match_parent" androID:layout_height="match_parent" androID:ID="@+ID/webVIEw1" androID:layout_alignParentleft="true" androID:layout_alignParentStart="true" /></relativeLayout>AndroIDManifest.xml中
<?xml version="1.0" enCoding="utf-8"?><manifest xmlns:androID="http://schemas.androID.com/apk/res/androID"package="com.mt.nad.testwebapp" ><uses-permission androID:name="androID.permission.INTERNET"></uses-permission><application androID:allowBackup="true" androID:icon="@drawable/ic_launcher" androID:label="@string/app_name" androID:theme="@style/Apptheme" > <activity androID:name=".MainActivity" androID:label="@string/app_name" > <intent-filter> <action androID:name="androID.intent.action.MAIN" /> <category androID:name="androID.intent.category.LAUNCHER" /> </intent-filter> </activity></application></manifest>的index.HTML
<!DOCTYPE HTML><HTML><head> <Meta charset="UTF-8"> <Meta http-equiv="X-UA-Compatible" content="IE=edge,Chrome=1"> <Meta name="description" content=""> <Meta name="vIEwport" content="wIDth=device-wIDth, initial-scale=1"> <Title>Test Only</Title> <link rel="stylesheet" href=""></head><body><div><input type="button" value="Go To Site" onClick="window.CallJavaAdapter.gotoSite()"></div><script src="http://code.jquery.com/jquery-1.11.1.min.Js"></script></body></HTML>logcat的
12-29 03:54:04.099 2793-2838/com.mt.nad.testwebapp W/WebVIEw﹕ java.lang.Throwable: A WebVIEw method was called on thread 'JavaBrIDge'. All WebVIEw methods must be called on the same thread. (Expected Looper Looper (main, tID 1) {2e799371} called on Looper (JavaBrIDge, tID 210) {72d6c48}, FYI main Looper is Looper (main, tID 1) {2e799371}) at androID.webkit.WebVIEw.checkThread(WebVIEw.java:2194) at androID.webkit.WebVIEw.clearCache(WebVIEw.java:1451) at com.mt.nad.testwebapp.MainActivity$JavaScriptInterface.gotoSite(MainActivity.java:56) at com.androID.org.chromium.base.SystemMessageHandler.nativeDoRunLoopOnce(Native Method) at com.androID.org.chromium.base.SystemMessageHandler.handleMessage(SystemMessageHandler.java:28) at androID.os.Handler.dispatchMessage(Handler.java:102) at androID.os.Looper.loop(Looper.java:135) at androID.os.HandlerThread.run(HandlerThread.java:61)12-29 03:54:04.100 2793-2838/com.mt.nad.testwebapp W/System.err﹕ java.lang.RuntimeException: java.lang.Throwable: A WebVIEw method was called on thread 'JavaBrIDge'. All WebVIEw methods must be called on the same thread. (Expected Looper Looper (main, tID 1) {2e799371} called on Looper (JavaBrIDge, tID 210) {72d6c48}, FYI main Looper is Looper (main, tID 1) {2e799371})12-29 03:54:04.100 2793-2838/com.mt.nad.testwebapp W/System.err﹕ at androID.webkit.WebVIEw.checkThread(WebVIEw.java:2204)12-29 03:54:04.100 2793-2838/com.mt.nad.testwebapp W/System.err﹕ at androID.webkit.WebVIEw.clearCache(WebVIEw.java:1451)12-29 03:54:04.101 2793-2838/com.mt.nad.testwebapp W/System.err﹕ at com.mt.nad.testwebapp.MainActivity$JavaScriptInterface.gotoSit (MainActivity.java:56)12-29 03:54:04.101 2793-2838/com.mt.nad.testwebapp W/System.err﹕ at com.androID.org.chromium.base.SystemMessageHandler.nativeDoRunLoopOnce(Native Method)12-29 03:54:04.101 2793-2838/com.mt.nad.testwebapp W/System.err﹕ at com.androID.org.chromium.base.SystemMessageHandler.handleMessage(SystemMessageHandler.java:28)12-29 03:54:04.101 2793-2838/com.mt.nad.testwebapp W/System.err﹕ at androID.os.Handler.dispatchMessage(Handler.java:102)12-29 03:54:04.101 2793-2838/com.mt.nad.testwebapp W/System.err﹕ at androID.os.Looper.loop(Looper.java:135)12-29 03:54:04.101 2793-2838/com.mt.nad.testwebapp W/System.err﹕ at androID.os.HandlerThread.run(HandlerThread.java:61)12-29 03:54:04.101 2793-2838/com.mt.nad.testwebapp W/System.err﹕ Caused by: java.lang.Throwable: A WebVIEw method was called on thread 'JavaBrIDge'. All WebVIEw methods must be called on the same thread. (Expected Looper Looper (main, tID 1) {2e799371} called on Looper (JavaBrIDge, tID 210) {72d6c48}, FYI main Looper is Looper (main, tID 1) {2e799371})12-29 03:54:04.102 2793-2838/com.mt.nad.testwebapp W/System.err﹕ at androID.webkit.WebVIEw.checkThread(WebVIEw.java:2194)12-29 03:54:04.102 2793-2838/com.mt.nad.testwebapp W/System.err﹕ ... 7 more12-29 03:54:04.127 2793-2793/com.mt.nad.testwebapp I/chromium﹕ [INFO:CONSolE(19)] "Uncaught Error: Java exception was raised during method invocation", source: http://10.0.2.2/test-java-adapter/ (19)12-29 03:54:04.159 2793-2832/com.mt.nad.testwebapp E/eglCodecCommon﹕ glutilsParamSize: unkNow param 0x00000b4412-29 03:54:04.175 2793-2832/com.mt.nad.testwebapp E/eglCodecCommon﹕ glutilsParamSize: unkNow param 0x00000bd012-29 03:54:04.274 2793-2832/com.mt.nad.testwebapp E/eglCodecCommon﹕ **** ERROR unkNown type 0x0 (glSizeof,72)12-29 03:54:04.299 2793-2832/com.mt.nad.testwebapp E/eglCodecCommon﹕ glutilsParamSize: unkNow param 0x00000b4412-29 03:54:04.323 2793-2832/com.mt.nad.testwebapp E/eglCodecCommon﹕ glutilsParamSize: unkNow param 0x00000bd012-29 03:54:04.448 2793-2832/com.mt.nad.testwebapp E/eglCodecCommon﹕ **** ERROR unkNown type 0x0 (glSizeof,72)12-29 03:54:04.468 2793-2832/com.mt.nad.testwebapp E/eglCodecCommon﹕ glutilsParamSize: unkNow param 0x00000b4412-29 03:54:04.499 2793-2832/com.mt.nad.testwebapp E/eglCodecCommon﹕ glutilsParamSize: unkNow param 0x00000bd012-29 03:54:04.527 2793-2832/com.mt.nad.testwebapp E/eglCodecCommon﹕ **** ERROR unkNown type 0x0 (glSizeof,72)12-29 03:54:04.537 2793-2832/com.mt.nad.testwebapp E/eglCodecCommon﹕ glutilsParamSize: unkNow param 0x00000b4412-29 03:54:04.549 2793-2832/com.mt.nad.testwebapp E/eglCodecCommon﹕ glutilsParamSize: unkNow param 0x00000bd012-29 03:54:04.580 2793-2832/com.mt.nad.testwebapp E/eglCodecCommon﹕ **** ERROR unkNown type 0x0 (glSizeof,72)资源：
http://10.0.2.2/test-java-adapter/ (19)是指
<input type="button" value="Go To Site" onClick="window.CallJavaAdapter.gotoSite()">如果使用Toast或TextVIEw,在单击按钮时可以更改,但对于WebVIEw loadurl(),它将不会加载…
我指的是：Android App: How to loadUrl in WebView from another class?但仍然没有运气……
解决方法:
更改
@JavaScriptInterfacepublic voID gotoSite() { //Toast.makeText(mContext, url, Toast.LENGTH_SHORT).show(); webC.clearCache(true);//Here you call the methond in other thread webC.loadUrl("http://Google.com");}至：
@JavaScriptInterfacepublic voID gotoSite() { //Toast.makeText(mContext, url, Toast.LENGTH_SHORT).show(); new Handler().post(new Runnable() { @OverrIDe public voID run() { webC.clearCache(true);//Here you call the methond in UI thread webC.loadUrl("http://Google.com"); } });}以上是内存溢出为你收集整理的java – WebView loadurl() – android app全部内容，希望文章能够帮你解决java – WebView loadurl() – android app所遇到的程序开发问题。
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