android webview 中网页数据与js交互

html.getSettings().setJavaScriptEnabled(true);

html.getSettings().setDefaultTextEncodingName("UTF-8");

html.getSettings().setLayoutAlgorithm(LayoutAlgorithm.NARROW_COLUMNS);

final QuestionsListInstance navigation = new QuestionsListInstance();

html.addJavascriptInterface(navigation, "Navigation");

class QuestionsListInstance{

@JavascriptInterface

public String GetManeuverInfo() {

return json;

}

@JavascriptInterface

public void GetManeuverInfo(String w) throws JSONException,Exception {

Toast.makeText(mContext, "index==" + w, 2).show();

SelfTestingActivity.isShowSaveDialog = true;

if (isFirst) {

try {

correctResult = w;

SelfTestingActivity.questionCache.putJson(resourceId, exercisesId, correctResult, CacheURL.AddExerciseRecord);

} catch (Exception e) {

Log.e("Index ERR", e.toString());

}

}

isFirst = false;

}

}

public QuestionFragment(String json) {

super();

this.json = json;

}

public void setFontSize(String size) {

// TODO Auto-generated method stub

html.loadUrl("javascript:fonts('" + size + "')");

}

public void setMode(String nightMode) {

// TODO Auto-generated method stub

html.loadUrl("javascript:mode('" + nightMode + "')");

}

@SuppressLint("HandlerLeak")

final Handler handler = new Handler() {

@Override

public void handleMessage(Message msg) {

switch (msg.what) {

case 1:

}

}

};

webview中响应时间在GetManeuverInfo 中

还有那个 @JavascriptInterface 一定不要丢啊擦，不然没用，测试了一下午。。。结果发现是这个原因