Android: Hiding the keyboard in an overridden “Don

问题:

I have used a bit of Android code to override the "Done" button in my EditText field:

   myEditField.setOnEditorActionListener(new TextView.OnEditorActionListener() {
        @Override
        public boolean onEditorAction(TextView v, int actionId, KeyEvent event) {
            if (actionId == EditorInfo.IME_ACTION_DONE) {

                mySubroutine();

                return true;
            }
            return false;
        }
    });

Activating the field calls up the keyboard, and pressing "Done" evaluates mySubroutine() successfully. However, the keyboard no longer goes away when I press "Done". How do I restore this default behaviour to the routine?

回答1:

Why not:

myEditField.setOnEditorActionListener(new TextView.OnEditorActionListener() { 
    @Override 
    public boolean onEditorAction(TextView v, int actionId, KeyEvent event) { 
        if (actionId == EditorInfo.IME_ACTION_DONE) { 

            mySubroutine(); 
        } 
        return false; 
    } 
}); 

Just return false after you handle your code. This can be interpreted as no matter what your code (mySubroutine()) does it will still use the default action afterwards. If you return "true" you are telling that you are a happy coder and everything that needed to be done has happen in your mySubroutine() and the default action do not need to take action.

回答2:

You can close the keyboard by doing:

InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(getWindowToken(), 0);

回答3:

You must attach an onClickListener to the button that executes the following code:

InputMethodManager imm = (InputMethodManager)getSystemService(INPUT_METHOD_SERVICE);
imm.hideSoftInputFromWindow(editview.getWindowToken(), 0);

回答4:

I had the same problem. Immediately after editText VISIBILITY change from GONE to VISIBLE, I had to set the focus and display the soft keyboard. I achieved this using the following code:

        (new Handler()).postDelayed(new Runnable() {

        public void run() {              yourEditText.dispatchTouchEvent(MotionEvent.obtain(SystemClock.uptimeMillis(), SystemClock.uptimeMillis(), MotionEvent.ACTION_DOWN , 0, 0, 0));
            yourEditText.dispatchTouchEvent(MotionEvent.obtain(SystemClock.uptimeMillis(), SystemClock.uptimeMillis(), MotionEvent.ACTION_UP , 0, 0, 0));                       

        }
    }, 200);