Android同时滚动两个webview

Question

我对Android很新，我的情况是我在同一个Activity上获得了webview1和webview2，并按钮切换它们。 我不知道这样做  1.我滚动webview1和webview2自动滚动。  2. webview1和webview2将滚动到同一时间结束

public class MainActivity extends AppCompatActivity {

WebView myWebView,myWebView2;
int webTextDefault = 100;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    myWebView = (WebView)findViewById(myWebView1);
    //myWebView.getSettings().setJavaScriptEnabled(true);
    myWebView.setBackgroundColor(Color.TRANSPARENT);
    myWebView.loadUrl("file:///android_asset/try1.html");
    myWebView.setWebViewClient(new WebViewClient());

    myWebView2 = (WebView)findViewById(R.id.myWebView2);
    myWebView2.setBackgroundColor(Color.TRANSPARENT);
    myWebView2.setVisibility(View.GONE);
    myWebView2.loadUrl("file:///android_asset/try2.html");
    myWebView2.setWebViewClient(new WebViewClient());


}



public void myClick(View v) {
    switch (v.getId()){
        case R.id.button:
            myWebView2.setVisibility(View.GONE);
            myWebView.setVisibility(View.VISIBLE);
            break;

        case R.id.button2:
            myWebView2.setVisibility(View.VISIBLE);
            myWebView.setVisibility(View.GONE);
            break;
    }

}

}