How to close/hide the Android soft keyboard programmatically?

To close or hide the soft keyboard programmatically in an Android application, you can use the following approaches:

1. Using InputMethodManager:

// Assuming you have a reference to the current activity
InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
View view = this.getCurrentFocus();

if (view != null) {
    imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
}

This code uses the InputMethodManager class to manage the input method, in this case, the soft keyboard. The hideSoftInputFromWindow() method is called to hide the keyboard. It takes two parameters: the windowToken of the currently focused view, and a flag indicating additional options (here set to 0).

2. Using getWindow() method:

// Assuming you have a reference to the current activity
View view = this.getCurrentFocus();
if (view != null) {
    InputMethodManager imm = (InputMethodManager) getSystemService(Context.INPUT_METHOD_SERVICE);
    view.clearFocus();
    imm.hideSoftInputFromWindow(view.getWindowToken(), 0);
}

In this approach, getCurrentFocus() is used to obtain the currently focused view, and then hideSoftInputFromWindow() is called to hide the soft keyboard.

Both approaches rely on obtaining a reference to the InputMethodManager and the windowToken of the currently focused view. This ensures that the soft keyboard is hidden regardless of the current input field.

Remember to replace this with the appropriate reference to your activity context.

Additionally, if you want to programmatically hide the keyboard when the user presses a button or performs a specific action, you can attach the code to that event handler.