Original [Android] All WebView methods must is called on the same thread.

Problem WebView called JS error.

Class Testjs {
......
Public Testjs () {
}

public void Save (String data) {
Webview.loadurl ("Javascript:alert (" + Data + ")");
}
......
}

W/webview (2088): Java.lang.throwable:a WebView method was called on thread ' Javabridge '. All WebView methods must is called on the same thread. (Expected Looper Looper (Main, Tid 1) {b3dbcb18} called on Looper (Javabridge, Tid +) {B44A1AF8}, FYI main Looper is Loo Per (main, Tid 1) {b3dbcb18})
W/webview (2088): at Android.webkit.WebView.checkThread (webview.java:2063)
W/webview (2088): at Android.webkit.WebView.loadUrl (webview.java:794)
W/webview (2088): at Com.ue.oa.activity.XFormActivity.alert (xformactivity.java:180)
W/webview (2088): at Com.ue.oa.activity.xformactivity$formactions.save (xformactivity.java:193)
W/webview (2088): at Com.android.org.chromium.base.SystemMessageHandler.nativeDoRunLoopOnce (Native Method)
W/webview (2088): at Com.android.org.chromium.base.SystemMessageHandler.handleMessage (Systemmessagehandler.java : 27)
W/webview (2088): at Android.os.Handler.dispatchMessage (handler.java:102)
W/webview (2088): at Android.os.Looper.loop (looper.java:136)
W/webview (2088): at Android.os.HandlerThread.run (handlerthread.java:61)
Solve
Modify the Save method to:
public void Save (String data) {
Webview.post (New Runnable () {
@Override
Public void Run () {
Webview.loadurl ("Javascript:alert (" + Data + ")");
            }
        });
}

"Reference"
[1] "Android Webview.loadurl won ' t load another webpage": http://stackoverflow.com/questions/21955593/ Android-webview-loadurl-wont-load-another-webpage