我已经使用了这里发布的代码示例calling date picker from javascript,这在android模拟器中工作正常。当我在Web视图中单击日期输入框时,会出现android日期选择器,我可以选择它。
然而,当我在我的设备上测试它时,我只是得到一个标准的文本输入字段,就好像没有调用该方法一样。有没有人有什么建议?我正在使用的完整代码是:
public class MainActivity extends ActionBarActivity {
public WebView mWebView;
@Override
protected void onCreate (Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mWebView = (WebView) findViewById(R.id.activity_main_webview);
WebSettings webSettings = mWebView.getSettings();
webSettings.setJavaScriptEnabled(true);
final MyJavaScriptInterface myJavaScriptInterface = new MyJavaScriptInterface(this);
mWebView.addJavascriptInterface(myJavaScriptInterface, "MyJavaScriptInterface");
mWebView.loadUrl("http:// mywebsite.html");
}
// Classe de prise en charge du java privé
public class MyJavaScriptInterface {
public String m_szTagId;
Context mContext;
MyJavaScriptInterface(Context c) {
mContext = c;
}
public void openDatePickerDialog(String szTagId) {
m_szTagId = szTagId;
Calendar c = Calendar.getInstance();
DatePickerDialog dp = new DatePickerDialog(mContext, new OnDateSetListener() {
public void onDateSet(DatePicker view, int year,
int monthOfYear, int dayOfMonth) {
String szDate = String.format("%04d/%02d/%02d", year, monthOfYear + 1, dayOfMonth);
mWebView.loadUrl("javascript:callFromActivity_RetDate(\"" + m_szTagId + "\", \"" + szDate + "\")");
}
}, c.get(Calendar.YEAR), c.get(Calendar.MONTH), c.get(Calendar.DAY_OF_MONTH));
dp.show();
}
} // Class MyJavaScriptInterface
@Override
public boolean onCreateOptionsMenu (Menu menu){
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected (MenuItem item){
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
和Javascript代码是:
// ---- date picker to call methods of the android device
$('#datepicker').click(function(e){
getDataDate();
});
function getDataDate(){
MSSAndroidFunction.openDatePickerDialog('datepicker');
}
function callFromActivity_RetDate(datepicker, data) {
document.subHours.datepicker.value = data;
}

答案 0 :(得分:0)
您已将JavaScript接口命名为MyJavaScriptInterface
,因此您必须从JavaScript调用它。
即:
而不是MSSAndroidFunction.openDatePickerDialog('datepicker')
,您必须使用JavaScript方法执行MyJavaScriptInterface.openDatePickerDialog('datepicker')
。
我有一个基于WebView
的应用程序,我在其中定义了另一个类中的接口,而不是内部类,并且在初始化中我做了:
htmlInterface=new HTMLInterface(this, webView);
webView.addJavascriptInterface(htmlInterface, "Android");
希望它能帮到你 此致