保持当前页面呈现，直到加载下一页

我觉得这是一个棘手的解决方案。在有人发布“真实”方法来执行此操作之前，我将其作为临时修复程序提供。

MainActivity 班级：

public class MainActivity extends Activity
{
    WebView webView1, webView2;
    EditText editText;

    @Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        editText = (EditText) findViewById(R.id.edit_url);
        webView1 = (WebView) findViewById(R.id.webView_1);
        webView2 = (WebView) findViewById(R.id.webView_2);

        webView1.setWebViewClient(client);
        webView2.setWebViewClient(client);

        webView1.loadUrl(editText.getText().toString());
    }

    private WebViewClient client = new WebViewClient()
    {
        public void onPageFinished(WebView webView, String url)
        {
            if (webView == webView1)
                webView2.setVisibility(View.GONE);
            else
                webView1.setVisibility(View.GONE);

            webView.setVisibility(View.VISIBLE);
            Toast.makeText(MainActivity.this, "WebView " + (webView == webView1 ? "One" : "Two") + " is showing", 0).show();
        }
    };

    private void loadUrl(String url)
    {
        if (webView1.getVisibility() == View.GONE)
            webView1.loadUrl(url);
        else
            webView2.loadUrl(url);
    }

    public void onClick(View v)
    {
        loadUrl(editText.getText().toString());
    }
}

main.xml：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical" >

    <android.webkit.WebView android:id="@+id/webView_1"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1" />

    <android.webkit.WebView android:id="@+id/webView_2"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_weight="1"
        android:visibility="gone" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >

        <EditText android:id="@+id/edit_url"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="4"
            android:layout_gravity="center_vertical"
            android:text="http://www.example.com" />

        <Button android:id="@+id/button_load"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:onClick="onClick"
            android:text="Load" />

    </LinearLayout>

</LinearLayout>