通过android系统的WebView控件访问web应用

主程序入口

public class GwpActivity extends Activity {

    private WebView webView;

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

    public void init() {
        webView = (WebView) findViewById(R.id.gwkview);
        webView.getSettings().setJavaScriptEnabled(true);
        webView.setWebViewClient(new GwkWebViewClient());

        InputStream in = getResources().openRawResource(R.raw.gwkinfo);  // 读取res/raw/gwkinfo属性文件内容
        Properties p = new Properties();
        try {
            p.load(in);
            webView.loadUrl(p.getProperty("domain_url", "http://xxxx.com"));
        } catch (Exception e) {
            webView.loadUrl("http://xxxx.com");
        } finally {
            try {
                in.close();
            } catch (IOException e) {
            }
        }
    }

    @Override
    public boolean onKeyDown(int keyCode, KeyEvent event) {
        if(webView.canGoBack() && keyCode == KeyEvent.KEYCODE_BACK && event.getRepeatCount() == 0) {
            webView.goBack();
            return true;
        }
        return super.onKeyDown(keyCode, event);
    }

    @Override
    protected void onDestroy() {
        super.onDestroy();
        System.exit(0);
    }
}

 自定义WebView

public class GwkWebViewClient extends WebViewClient {

    /*
     * 需要区分点击来源, 所以在请求地址上加了个参数用来标识点击是从手机上来的.
     */
    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {
        int position = url.indexOf("?");

        if (position == -1) {
            url = url + "?type=app";
        } else {
            url = url + "&type=app";
        }

        view.loadUrl(url);
        return true;
    }

    /**
     *
     * 当接收出错的时候, 显示自定义的错误页面.
     */
    @Override
    public void onReceivedError(WebView view, int errorCode, String description, String failingUrl) {
        view.loadUrl("file:///android_asset/error.html");  // 加载assets/error.html页面
    }

}