Display android DatePicker on click of a button in Javascript

Question

Here is my requirement : I\'am loading one html file on to a WebView. I have a button in html file to select the date. When i click on that button i want to open android da

Answer 1

Here is a sample code I use do show, derived from the code here:

In the html code, add 2 javascript functions:

// Fonction d'appel calendrier Android
function f_CallCalendar(Tag)
{
    MSSAndroidFunction.openDatePickerDialog(Tag);
}
// Fonction de retour de la date
function callFromActivity_RetDate(Tag, data) {
    document.Form.vDate.value = data;
}

The Tag is the id of the input form to be completed. You call the javascript functions like this:

<input name="vDate" type="text" size="11" />&nbsp;
<input name="Submit" type="button" onclick="f_CallCalendar('vDate')" value="Calendrier*" />

And here is the java code implemented. Note that the MyJavaScriptInterface is declared inside the MainActivity:

public class MainActivity extends Activity 
        implements TextWatcher{
    WebView MainWebView;

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        MainWebView = (WebView)findViewById(R.id.main_webview);
        MainWebView.getSettings().setJavaScriptEnabled(true);
        final MyJavaScriptInterface myJavaScriptInterface = new MyJavaScriptInterface(this);
        MainWebView.addJavascriptInterface(myJavaScriptInterface, "MyJavaScriptInterface");
    }

    // 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("%02d/%02d/%04d", dayOfMonth, monthOfYear+1, year);
                    MainWebView.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

} // class MainActivity

Here is it. Hope this can help.

Answer 2

public void openDatePickerDialog()
{ 
    Calendar c = Calendar.getInstance();
    mYear = c.get(Calendar.YEAR);
    mMonth = c.get(Calendar.MONTH);
    mDay = c.get(Calendar.DAY_OF_MONTH);

    //updateDisplay();
    DatePickerDialog dp = new DatePickerDialog(this,
            mDateSetListener,
            mYear, mMonth, mDay);
    dp.show();
}

can you try this once.