Question

我收到以下异常但无法调试它。

请帮助。
代码：

public class HybridActivity extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        WebView webview=(WebView)findViewById(R.id.webkitWebView1);
        WebSettings settings=webview.getSettings();
        settings.setJavaScriptEnabled(true);
        settings.setDatabaseEnabled(true);
        settings.setDomStorageEnabled(true);
        settings.setAllowFileAccess(true);
        settings.setBuiltInZoomControls(true);
        webview.setWebChromeClient(new WebChromeClient());

        //  webview.loadUrl("file:///android_asset/www/html/hyb.html");
        // webview.loadUrl("file:///android_asset/index.html");
        try {
            webview.loadUrl("http://www.google.com");
        } catch (Exception e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }

        MultipleWebViewHanlder webView2 = new MultipleWebViewHanlder(this);
        webView2.loadNewWebView();
    }
}

public class MultipleWebViewHanlder {
    public MultipleWebViewHanlder(Context context) {
        // TODO Auto-generated constructor stub
        this.context = context;
    }

    public void MultipleWebViewArea(final String command) {

        final RelativeLayout.LayoutParams params = new  RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.FILL_PARENT, RelativeLayout.LayoutParams.FILL_PARENT);
        try {
            Log.i("","Inside tryyyyyyyyyyyyyyyyyyyyy");
            final WebView mWebView = new WebView(context);

            WebSettings settings=mWebView.getSettings();
            settings.setJavaScriptEnabled(true);
            settings.setDatabaseEnabled(true);
            settings.setDomStorageEnabled(true);
            settings.setAllowFileAccess(true);
            settings.setBuiltInZoomControls(true);
            mWebView.setWebChromeClient(new WebChromeClient());
            JSInterface.handler.post(new Runnable() {

                @Override
                public void run() {
                    try {
                        Log.i("","Inside tryyyyyyyyyyyyyyyyyyyy b4 add content viewwwwwwwwww");
                        Runnable runnable = new Runnable() {
                            public void run() {
                                ((Activity)context).addContentView(mWebView,params);
                                Log.i("","Inside tryyyyyyyyyyyyyyyyyyyy after add content viewwwwwwwwww ");
                                mWebView.loadUrl(((Activity)context).getResources().getString(R.string.DemoURL));
                            }
                        };
                        ((Activity)context).runOnUiThread(runnable);

日志：

04-20 10:55:58.052: WARN/dalvikvm(9255): threadid=8: thread exiting with uncaught exception (group=0x400207d8)
04-20 10:55:58.092: ERROR/AndroidRuntime(9255): FATAL EXCEPTION: WebViewCoreThread  
04-20 10:55:58.092: ERROR/AndroidRuntime(9255): android.view.ViewRoot$CalledFromWrongThreadException: Only the original thread that created a view hierarchy can touch its views.  
04-20 10:55:58.092: ERROR/AndroidRuntime(9255):     at android.view.ViewRoot.checkThread(ViewRoot.java:2812)  
04-20 10:55:58.092: ERROR/AndroidRuntime(9255):     at android.view.ViewRoot.invalidateChild(ViewRoot.java:607)  
04-20 10:55:58.092: ERROR/AndroidRuntime(9255):     at android.view.ViewRoot.invalidateChildInParent(ViewRoot.java:633)  
04-20 10:55:58.092: ERROR/AndroidRuntime(9255):     at android.view.ViewGroup.invalidateChild(ViewGroup.java:2505)
04-20 10:55:58.092: ERROR/AndroidRuntime(9255):     at android.view.View.invalidate(View.java:5115)
04-20 10:55:58.092: ERROR/AndroidRuntime(9255):     at android.webkit.WebView.viewInvalidate(WebView.java:2565)
04-20 10:55:58.092: ERROR/AndroidRuntime(9255):     at android.webkit.WebView.invalidateContentRect(WebView.java:2584)
04-20 10:55:58.092: ERROR/AndroidRuntime(9255):     at android.webkit.WebView.access$6200(WebView.java:304)
04-20 10:55:58.092: ERROR/AndroidRuntime(9255):     at android.webkit.WebView$PrivateHandler.handleMessage(WebView.java:7860)
04-20 10:55:58.092: ERROR/AndroidRuntime(9255):     at android.os.Handler.dispatchMessage(Handler.java:99)
04-20 10:55:58.092: ERROR/AndroidRuntime(9255):     at android.os.Looper.loop(Looper.java:123)
04-20 10:55:58.092: ERROR/AndroidRuntime(9255):     at android.webkit.WebViewCore$WebCoreThread.run(WebViewCore.java:637)
04-20 10:55:58.092: ERROR/AndroidRuntime(9255):     at java.lang.Thread.run(Thread.java:1096)
04-20 10:55:58.102: WARN/ActivityManager(172):   Force finishing activity com.Hy5/.activity.Hy5CanvasActivity

Answer 1

没有看到代码就很难说但似乎你正在尝试从它的所有者线程之外更改一个元素（这可能是因为你试图从其他线程更改UI元素）。

所以试试这个：有一个辅助函数runOnUiThread()接受一个runnable作为参数：

Runnable runnable = new Runnable() {
    public void run() {
        // your code here
    }
}

runOnUiThread(runnable);

在android webView中导致这种情况的原因是什么？

1 个答案: