如何使用WebAppInterface（Javascript界面）操作Android视图？

当我的Android WebView运行时，我使用WebAppInterface从Javascript获取数据。在我从Javascript中获取一些数据之后，如何操作Android视图

public class WebAppInterface {
    Context mContext;

    /** Instantiate the interface and set the context */
    WebAppInterface(Context c) {
        mContext = c;
    }

    //This function can only be called by javascript
    @android.webkit.JavascriptInterface
    public void sendDataToJava(float currTime, String url) {

        videoUrl = url;
        videoTime = Math.round(currTime);

        //use references to views to change stuff
        videoView.seekTo(videoTime); //ERROR HERE
       //ERROR: Only the original thread that created a view hierarchy can touch its views


    }


}

---

您需要保留对视图包含活动的引用，并使用runnable调用activity.runOnUiThread方法调用与视图相关的代码

它看起来像这样：

public class WebAppInterface {
    Context mContext;
    Activity mActivity;

    /** Instantiate the interface and set the context */
    WebAppInterface(Context c, Activity a) {
        mContext = c;
        mActivity = a;

    }

    //This function can only be called by javascript
    @android.webkit.JavascriptInterface
    public void sendDataToJava(float currTime, String url) {

        videoUrl = url;
        videoTime = Math.round(currTime);

        mActivity.runOnUiThread(new Runnable() {
            @Override
            public void run() {
                videoView.seekTo(videoTime); 
            }
        });
    }

}