android - 如何从 EditText 软键盘中获取 KeyEvents？

Question

我知道如何从物理键盘获取 KeyEvent，但如何从软键盘获取它们？

此代码不适用于软键盘：

editText.setOnKeyListener(new View.OnKeyListener() {
    public boolean onKey(View v, int keyCode, KeyEvent event) {
        Toast.makeText(this, Integer.toString(keyCode), Toast.LENGTH_SHORT)
        return false;
    }
});

Answer 1

也许您需要TextChangedListener（或将其用作替代方法）：

TextWatcher textWatcher = new TextWatcher() {
    public void beforeTextChanged(CharSequence s, int start, int count, int after) {
    }
    public void onTextChanged(CharSequence s, int start, int before,int count) {        
    }
    public void afterTextChanged(Editable s) {                   
    }       
};
editText.addTextChangedListener(textWatcher);

Answer 2

试试这个

public void onCreate(Bundle savedInstanceState) {
    ...
    etField =(EditText)findViewById(R.id.your_edit_text);

    etField.setOnKeyListener(new OnKeyListener() {

        @Override
        public boolean onKey(View v, int keyCode, KeyEvent event) {
             // register the text when "enter" is pressed
             if (event.getAction() == KeyEvent.ACTION_DOWN 
             || event.getAction() == KeyEvent.ACTION_UP ) {
             int timesPressed = event.getRepeatCount();
             //do something
        }
    });
}

或者

EditText.addTextChangedListener(new TextWatcher(){
   //do something
})