Android仿微信实现评论功能

//给评论图标设置点击事件
 mIv_header_discuss.setOnClickListener(new View.OnClickListener() {
  @Override
  public void onClick(View v) {
  showPopupcomment();
  }
 });

private PopupWindow popupWindow;
 private View popupView = null;
 private EditText inputComment;
 private String nInputContentText;
 private TextView btn_submit;
 private RelativeLayout rl_input_container;
 private InputMethodManager mInputManager;
 @SuppressLint("WrongConstant")
 private void showPopupcomment() {
 if (popupView == null){
 //加载评论框的资源文件 
  popupView = LayoutInflater.from(context).inflate(R.layout.comment_popupwindow, null);
 }
 inputComment = (EditText) popupView.findViewById(R.id.et_discuss);
 btn_submit = (Button) popupView.findViewById(R.id.btn_confirm);
 rl_input_container = (RelativeLayout)popupView.findViewById(R.id.rl_input_container);
 //利用Timer这个Api设置延迟显示软键盘，这里时间为200毫秒
 Timer timer = new Timer();
 timer.schedule(new TimerTask() {

  public void run()
  {
  mInputManager = (InputMethodManager)getActivity().getSystemService(Context.INPUT_METHOD_SERVICE);
  mInputManager.showSoftInput(inputComment, 0);
  }

 }, 200);
 if (popupWindow == null){
  popupWindow = new PopupWindow(popupView, RelativeLayout.LayoutParams.MATCH_PARENT,
   RelativeLayout.LayoutParams.WRAP_CONTENT, false);

 }
 //popupWindow的常规设置，设置点击外部事件，背景色
 popupWindow.setTouchable(true);
 popupWindow.setFocusable(true);
 popupWindow.setOutsideTouchable(true);
 popupWindow.setBackgroundDrawable(new ColorDrawable(0x00000000));
 popupWindow.setTouchInterceptor(new View.OnTouchListener() {
  @Override
  public boolean onTouch(View v, MotionEvent event) {
  if (event.getAction() == MotionEvent.ACTION_OUTSIDE)
   popupWindow.dismiss();
  return false;

  }
 });

 // 设置弹出窗体需要软键盘，放在setSoftInputMode之前
 popupWindow.setSoftInputMode(PopupWindow.INPUT_METHOD_NEEDED);
 // 再设置模式，和Activity的一样，覆盖，调整大小。
 popupWindow.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
 //设置popupwindow的显示位置，这里应该是显示在底部，即Bottom
 popupWindow.showAtLocation(popupView, Gravity.BOTTOM, 0, 0);

 popupWindow.update();

 //设置监听
 popupWindow.setOnDismissListener(new PopupWindow.OnDismissListener() {

  // 在dismiss中恢复透明度
  @RequiresApi(api = Build.VERSION_CODES.CUPCAKE)
  public void onDismiss() {

  mInputManager.hideSoftInputFromWindow(inputComment.getWindowToken(), 0); //强制隐藏键盘


  }
 });
 //外部点击事件
 rl_input_container.setOnClickListener(new View.OnClickListener() {
  @Override
  public void onClick(View v) {


  mInputManager.hideSoftInputFromWindow(inputComment.getWindowToken(), 0); //强制隐藏键盘
  popupWindow.dismiss();

  }
 });
 //评论框内的发送按钮设置点击事件
 btn_submit.setOnClickListener(new View.OnClickListener() {
  @Override
  public void onClick(View v) {


  nInputContentText = inputComment.getText().toString().trim();

  if (nInputContentText == null || "".equals(nInputContentText)) {
   showToastMsgShort("请输入评论内容");
   return;
  }
  mInputManager.hideSoftInputFromWindow(inputComment.getWindowToken(),0);
  popupWindow.dismiss();

  }
 });
 }

popupWindow.setSoftInputMode(PopupWindow.INPUT_METHOD_NEEDED);
popupWindow.setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
 xmlns:android="http://schemas.android.com/apk/res/android"
 android:id="@+id/rl_input_container"
 android:layout_width="match_parent"
 android:layout_height="match_parent">
 <LinearLayout
  android:layout_width="match_parent"
  android:layout_height="44dp"
  android:background="@color/colorWhite"
  android:layout_alignParentBottom="true"
  android:orientation="horizontal">
  <EditText
  android:id="@+id/et_discuss"
  android:layout_width="0dp"
  android:layout_weight="1"
  android:layout_height="38dp"
  android:textColorHint="#a2a2a2"
  android:textSize="13sp"
  android:layout_marginRight="7dp"
  android:layout_marginLeft="15dp"
  android:layout_marginBottom="6dp"
  android:layout_marginTop="6dp"
  android:ellipsize="end"
  android:background="@drawable/round_edittext_input"
  android:layout_gravity="center_vertical"
  android:paddingLeft="@dimen/ten_padding"
  android:paddingRight="@dimen/ten_padding"
  android:singleLine="true" />
  <Button
  android:id="@+id/btn_confirm"
  android:text="发送"
  android:background="@drawable/btn_discuss_bg"
  android:textSize="16sp"
  android:layout_gravity="center_vertical"
  android:textColorHint="#b7b7b7"
  android:textColor="@color/colorWhite"
  android:layout_marginRight="@dimen/ten_padding"
  android:gravity="center"
  android:layout_width="40dp"
  android:layout_height="38dp"/>
  </LinearLayout>
</RelativeLayout>