Android自定义仿微信PopupWindow效果

private void initView(){
 //实例化标题栏按钮并设置监听
 titleBtn = (ImageButton) findViewById(R.id.title_btn);
 titleBtn.setOnClickListener(new OnClickListener() {
 @Override
 public void onClick(View v) {
  titlePopup.show(v);
 }
 });
  
 //实例化标题栏弹窗
 titlePopup = new TitlePopup(this, 
 LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
}

private void initData(){
 //给标题栏弹窗添加子类
 titlePopup.addAction(new ActionItem(this, "发起聊天", 
 R.drawable.mm_title_btn_compose_normal));
 titlePopup.addAction(new ActionItem(this, "听筒模式", 
 R.drawable.mm_title_btn_receiver_normal));
 titlePopup.addAction(new ActionItem(this, "登录网页", 
 R.drawable.mm_title_btn_keyboard_normal));
 titlePopup.addAction(new ActionItem(this, "扫一扫", 
 R.drawable.mm_title_btn_qrcode_normal));
}

private void initView(){
 //实例化标题栏按钮并设置监听
 titleBtn = (ImageButton) findViewById(R.id.title_btn);
 titleBtn.setOnClickListener(new OnClickListener() {
 @Override
 public void onClick(View v) {
  startActivity(new Intent(CustomTitleActivity02.this,
  DialogActivity.class));
 }
 });   
}