Android WebView的使用

public class WebViewActivity extends Activity implements IWeibo
{
    private WebView webView;
    private ProgressDialog progressDialog;
    private Handler handler;
    private static String url="http://api.t.sina.com.cn/oauth/authorize";
    
    protected void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.webview);
        
        //获取微博授权的网络路径
        url=AuthUtil.getAuthorizationURL();

        if(url.equals("") || url==null)
        {
            Toast.makeText(this, "授权地址为空", Toast.LENGTH_SHORT).show();
            return;
        }
        //初始化
        init();
        //加载网络数据地址
        LoadURL(url, webView);
        handler=new Handler()
        {
            public void handleMessage(Message msg)
            {
                if(msg.what==1)
                {
                    progressDialog.dismiss();
                }
            }
        };
    }
    
    @SuppressLint("SetJavaScriptEnabled")
    public void init()
    {
        
        if(progressDialog==null)
        {
            progressDialog=new ProgressDialog(this);
        }
        progressDialog.show();
        
        webView=(WebView) this.findViewById(R.id.WebViewOAuth);
        //开启javascript脚本
        webView.getSettings().setJavaScriptEnabled(true);
        //javascript接口用于读取授权码
        webView.addJavascriptInterface(new JavascriptInterface(), "Android");
        
        webView.setWebViewClient(new WebViewClient()
        {
            public boolean shouldOverrideUrlLoading(WebView view, String url)
            {
                LoadURL(url, view);
                return true;
            }
            
            //当页面加载完成以后获取该网页的源码文件中的授权码
            public void onPageFinished(final WebView view, String url)
            {
                System.out.println("url >>>>>>>>>>>>>>>"+url);
                if(url.equals("http://api.t.sina.com.cn/oauth/authorize"))
                {
                    view.loadUrl("javascript:window.Android.getPIN('<head>'+document.getElementsByTagName('html')[0].innerHTML+'</head>');");
                    
                    Intent intent=new Intent(WebViewActivity.this,AccessTokenActivity.class);
                    startActivity(intent);
                    
                }
            }
        });
        
        webView.setWebChromeClient(new WebChromeClient()
        {
            public void onProgressChanged(WebView view, int progress) 
            {
                if(progress==100)
                {
                    handler.sendEmptyMessage(1);
                }
                else
                {
                    progressDialog.setMessage("已完成 "+progress+"%");
                }
            }
        });
    }
    
    /**
     * 
     * @param url新浪微博授权地址
     * @param webview浏览器这里是WebView控件
     */
    public void LoadURL(final String url,final WebView webview)
    {
        new Thread()
        {
            public void run() 
            {
                if(url.equals("") || url==null )
                {
                    return;
                }
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }
                webview.loadUrl(url);
            }
        }.start();
    }
posted on 2013-08-26 16:40 I love Android 阅读(431) 评论(0) 收藏举报