控件Edittext,点击清零

可以直接通过获取焦点的方法解决:

public class MyOnFocusChangeListener implements View.OnFocusChangeListener {
    @Override
    public void onFocusChange(View view, boolean b) {
        if (b) {
            EditText et = (EditText) view;
            et.setText("");
            et.invalidate();
        }
    }
}