Android与Javascript交互示例(三)

MainAcivity如下:

[java]
package cn.testjavascriptdialog;
import android.os.Bundle;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.AlertDialog.Builder;
import android.app.Dialog;
import android.content.DialogInterface;
import android.content.DialogInterface.OnClickListener;
import android.view.LayoutInflater;
import android.view.View;
import android.webkit.JsPromptResult;
import android.webkit.JsResult;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.widget.EditText;
/**
* Demo描述:
* 测试Android响应Javascript的三种对话框
*
* 参考资料:
* http://www.cnblogs.com/luckjun/archive/2013/03/22/2976117.html
*/
public class MainActivity extends Activity {
     private WebView mWebView;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        init();
    }

    private void init(){
        mWebView=(WebView) findViewById(R.id.webView);
        initWebViewSettings();
        // 为WebView设置WebChromeClient
        mWebView.setWebChromeClient(new WebChromeClientSubClass());
        //加载本地Html文件
        mWebView.loadUrl("file:///android_asset/test.html");
    }
    private void initWebViewSettings(){
        mWebView.setVerticalScrollBarEnabled(false);
        mWebView.setHorizontalScrollBarEnabled(false);
        mWebView.getSettings().setJavaScriptEnabled(true);
        mWebView.getSettings().setSupportZoom(true);
        mWebView.getSettings().setDomStorageEnabled(true);
        mWebView.getSettings().setPluginsEnabled(true);
        mWebView.requestFocus();
        mWebView.getSettings().setUseWideViewPort(true);
        mWebView.getSettings().setLoadWithOverviewMode(true);
        mWebView.getSettings().setSupportZoom(true);
        mWebView.getSettings().setBuiltInZoomControls(true);
    }

    private class WebChromeClientSubClass extends WebChromeClient{
        @Override
        public boolean onJsAlert(WebView view, String url, String message,final JsResult result) {
            Dialog alertDialog=null;
            AlertDialog.Builder builder=new Builder(MainActivity.this);
            builder.setTitle("Javascript的alert对话框");
            builder.setMessage(message);
            builder.setNegativeButton("OK", new OnClickListener() {
                @Override
                public void onClick(DialogInterface arg0, int arg1) {
                    System.out.println("现在显示的是Javascript的alert对话框");
                    //注意:
                    //必须要这一句代码:result.confirm()表示:
                    //处理结果为确定状态同时唤醒WebCore线程
                    //否则不能继续点击按钮
                    result.confirm();
                }
            });
            alertDialog=builder.create();
            alertDialog.show();
            return true;
        }
        @Override
        public boolean onJsConfirm(WebView view, String url, String message,final JsResult result) {
            Dialog confirmDialog=null;
            AlertDialog.Builder builder=new Builder(MainActivity.this);
            builder.setTitle("Javascript的confirm对话框");
            builder.setMessage(message);
            builder.setPositiveButton("OK", new OnClickListener() {
                @Override
                public void onClick(DialogInterface arg0, int arg1) {
                    System.out.println("现在点击的是Javascript的confirm对话框的OK");
                    //处理结果为确定状态同时唤醒WebCore线程
                    result.confirm();
                }
            });
    &nb

补充：移动开发 , Android ,