VIVO手机上del键无效OnKeyListener不响应的原因及解决方法

public class ZanyEditText extends EditText {  private OnDelKeyEventListener delKeyEventListener;  public ZanyEditText(Context context, AttributeSet attrs, int defStyle) {    super(context, attrs, defStyle);  }  public ZanyEditText(Context context, AttributeSet attrs) {    super(context, attrs);  }  public ZanyEditText(Context context) {    super(context);  }  @Override  public InputConnection onCreateInputConnection(EditorInfo outAttrs) {    return new ZanyInputConnection(super.onCreateInputConnection(outAttrs),        true);  }  private class ZanyInputConnection extends InputConnectionWrapper {    public ZanyInputConnection(InputConnection target, boolean mutable) {      super(target, mutable);    }    @Override    public boolean sendKeyEvent(KeyEvent event) {      if (event.getAction() == KeyEvent.ACTION_DOWN          && event.getKeyCode() == KeyEvent.KEYCODE_DEL) {        if (delKeyEventListener != null) {          delKeyEventListener.onDeleteClick();          return true;        }      }      return super.sendKeyEvent(event);    }    @Override    public boolean deleteSurroundingText(int beforeLength, int afterLength) {      if (beforeLength == 1 && afterLength == 0) {        return sendKeyEvent(new KeyEvent(KeyEvent.ACTION_DOWN,            KeyEvent.KEYCODE_DEL))            && sendKeyEvent(new KeyEvent(KeyEvent.ACTION_UP,            KeyEvent.KEYCODE_DEL));      }      return super.deleteSurroundingText(beforeLength, afterLength);    }  }  /**   *   * 功能描述: <br>   * 〈功能详细描述〉   *   * @param delKeyEventListener EditText删除回调   */  public void setDelKeyEventListener(OnDelKeyEventListener delKeyEventListener) {    this.delKeyEventListener = delKeyEventListener;  }  public interface OnDelKeyEventListener {    void onDeleteClick();  }}