Java – How to get the response from a modal dialog

androidjava

I currently have this:

Builder yesandno = new AlertDialog.Builder(this);           
yesandno.setTitle("QuickResponse");
yesandno.setMessage(message);
yesandno.setPositiveButton("YES", null);
yesandno.setNegativeButton("NO", null);
yesandno.show();

How should I go by setting an event listener that will capture if the user clicked YES or NO?

Best Answer

When you call setPositiveButton() and setNegativeButton() instead of passing in null you should pass in a DialogInterface.OnClickListener.

For example:

yesandno.setPositiveButton("YES", new DialogInterface.OnClickListener() {
    public void onClick(DialogInterface dialog, int which) {
        //User clicked yes!
    }
});

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Java – How to get an enum value from a string value in Java

Yes, Blah.valueOf("A") will give you Blah.A.

Note that the name must be an exact match, including case: Blah.valueOf("a") and Blah.valueOf("A ") both throw an IllegalArgumentException.

The static methods valueOf() and values() are created at compile time and do not appear in source code. They do appear in Javadoc, though; for example, Dialog.ModalityType shows both methods.

Android – How to close/hide the Android soft keyboard programmatically

You can force Android to hide the virtual keyboard using the InputMethodManager, calling hideSoftInputFromWindow, passing in the token of the window containing your focused view.

// Check if no view has focus:
View view = this.getCurrentFocus();
if (view != null) {  
    InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
    imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
}

This will force the keyboard to be hidden in all situations. In some cases, you will want to pass in InputMethodManager.HIDE_IMPLICIT_ONLY as the second parameter to ensure you only hide the keyboard when the user didn't explicitly force it to appear (by holding down the menu).

Note: If you want to do this in Kotlin, use: context?.getSystemService(Context.INPUT_METHOD_SERVICE) as InputMethodManager

Kotlin Syntax

// Only runs if there is a view that is currently focused
this.currentFocus?.let { view ->
    val imm = getSystemService(Context.INPUT_METHOD_SERVICE) as? InputMethodManager
    imm?.hideSoftInputFromWindow(view.windowToken, 0)
}

Best Answer

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Java – How to get an enum value from a string value in Java

Android – How to close/hide the Android soft keyboard programmatically

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