TextWatcher用于多个EditText

Question

我想TextWatcher为多个EditText字段实现接口。目前我正在使用：text1.addTextChangedListener(this);text2.addTextChangedListener(this);然后覆盖我的Activity中的方法：public void afterTextChanged(Editable s) {}public void beforeTextChanged(CharSequence s, int start, int count, int after) {}public void onTextChanged(CharSequence s, int start, int before, int count) { // do some operation on text of text1 field // do some operation on text of text2 field }但这工作正常，但我正在寻找其他方法，以便可以明确确定当前关注的EditText领域SoftKeyboard。

Answer 1

我会这样：

@Override

public void onCreate(Bundle savedInstanceState) {

    super.onCreate(savedInstanceState);

    setContentView(R.layout.main);

    EditText e = new EditText(this);

    e.addTextChangedListener(new CustomTextWatcher(e));

}

private class CustomTextWatcher implements TextWatcher {

    private EditText mEditText;

    public CustomTextWatcher(EditText e) { 

        mEditText = e;

    }

    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) {

    }

}