public class CopyContentPopWindow extends PopupWindow {
  private final View content;
 TextView tvLabel;
 TextView tvLabelFake;
 Activity context;
 private OnCopyContentListener onCopyContentListener;
 public CopyContentPopWindow(Activity context) {
  LayoutInflater inflater = (LayoutInflater) context
    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
  content = inflater.inflate(R.layout.popwindow_copy_content, null);
  tvLabel = content.findViewById(R.id.tv_label);
  tvLabelFake = content.findViewById(R.id.tv_label_fake);
  tvLabel.setOnClickListener(new View.OnClickListener() {
   @Override
   public void onClick(View v) {
    if (onCopyContentListener != null) {
     onCopyContentListener.copyContent();
    }
    CopyContentPopWindow.this.dismiss();
   }
  });
  this.setContentView(content);
  this.setWidth(ViewGroup.LayoutParams.WRAP_CONTENT);
  this.setHeight(ViewGroup.LayoutParams.WRAP_CONTENT);
  this.setFocusable(true);
  this.setOutsideTouchable(true);
  this.update();
  ColorDrawable dw = new ColorDrawable(0000000000);
  this.setBackgroundDrawable(dw);
  this.context = context;
 }
 public void setTvLabel(String text) {
  tvLabel.setText(text);
  tvLabelFake.setText(text);
  update();
 }
 public void setOnCopyContentListener(OnCopyContentListener onCopyContentListener) {
  this.onCopyContentListener = onCopyContentListener;
 }
 public void showPopupWindow(View parent) {
  if (!this.isShowing()) {
   int[] location = new int[2];
   parent.getLocationOnScreen(location);
//   this.showAsDropDown(parent, 0, 0);
   showAtLocation(parent, Gravity.NO_GRAVITY, location[0], location[1]);
  } else {
   this.dismiss();
  }
 }
 public interface OnCopyContentListener {
  void copyContent();
 }
}

public class MainActivity extends AppCompatActivity {
 TextView tvNickName;
 TextView tvQQNum;
 @Override
 protected void onCreate(Bundle savedInstanceState) {
  super.onCreate(savedInstanceState);
  setContentView(R.layout.activity_main);
  tvNickName = findViewById(R.id.tv_nick_name);
  tvQQNum = findViewById(R.id.tv_qq_num);
  tvNickName.setOnClickListener(v -> {
   CopyContentPopWindow copyContentPopWindow = new CopyContentPopWindow(MainActivity.this);
   copyContentPopWindow.setTvLabel("復制");
   copyContentPopWindow.setOnCopyContentListener(() -> {
    ClipboardManager cm = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
    ClipData clipData = ClipData.newPlainText("Label", tvNickName.getText().toString());
    cm.setPrimaryClip(clipData);
    Toast.makeText(MainActivity.this, "復制成功", Toast.LENGTH_LONG).show();
   });
   copyContentPopWindow.showPopupWindow(tvNickName);
  });
  tvQQNum.setOnClickListener(v -> {
   CopyContentPopWindow copyContentPopWindow = new CopyContentPopWindow(MainActivity.this);
   copyContentPopWindow.setTvLabel("復制QQ號");
   copyContentPopWindow.setOnCopyContentListener(() -> {
    ClipboardManager cm = (ClipboardManager) getSystemService(Context.CLIPBOARD_SERVICE);
    ClipData clipData = ClipData.newPlainText("Label", "100001");
    cm.setPrimaryClip(clipData);
    Toast.makeText(MainActivity.this, "復制成功", Toast.LENGTH_LONG).show();
   });
   copyContentPopWindow.showPopupWindow(tvQQNum);
  });
 }
}