Android 表白墙

前言：毕业设计没有需求，自己想需求，没什么太多想法，突然想起来有个渤大表白墙这个功能也不错，随便写一下。

具体就是一个弹窗插入数据，获取数据，在ListView中显示适配，下拉刷新。

public class ConfessionFragment extends BaseFragment implements SwipeRefreshLayout.OnRefreshListener {
    @BindView(R.id.msg_love_list)
    ListView msgListView;
    @BindView(R.id.refresh_love)
    SwipeRefreshLayout refreshLove;
    List mMsgLoveList = new ArrayList();
    MsgLoveAdapter mMsgLoveAdapter;
    public static Fragment getInstance() {
        Fragment fragment = new ConfessionFragment();
        return fragment;
    }
    @Override
    protected int contentViewID() {
        return R.layout.fragment_confession;
    }
    @Override
    protected void initialize() {
        EventBus.getDefault().register(this);
        refreshLove.setOnRefreshListener(this);
        refreshLove.setColorSchemeColors(getResources().getColor(R.color.color_love));
        queryLoveMsg();
    }
    private void queryLoveMsg() {
        BmobQuery msgLoveBmobQuery = new BmobQuery();
        msgLoveBmobQuery.order("-createdAt");
        msgLoveBmobQuery.findObjects(new FindListener() {
            @Override
            public void done(List object, BmobException e) {
                if (e == null) {
                    mMsgLoveList = object;
                    mMsgLoveAdapter = new MsgLoveAdapter(getContext(), R.layout.item_confession, mMsgLoveList);
                    msgListView.setAdapter(mMsgLoveAdapter);
                } else {
                    ToastUtils.showShort(getContext(), getContext().getString(R.string.query_failure));
                }
            }
        });
    }
    @Override
    public void onRefresh() {
        queryLoveMsg();
        mMsgLoveAdapter.notifyDataSetChanged();
        refreshLove.setRefreshing(false);
    }
    @Subscribe(threadMode = ThreadMode.MAIN)
    public void onEvent(MessageEvent messageEvent) {
        switch (messageEvent.getMessage()) {
            case ConstantConfig.UPDATE_LOVE:
                onRefresh();
                break;
            default:
        }
    }
    @OnClick({R.id.btn_add_love})
    public void onClick(View view) {
        switch (view.getId()){
            case R.id.btn_add_love:
                DialogUtils.addLoveDialog(getContext());
                break;
            default:
        }
    }
    @Override
    public void onStop() {
        super.onStop();
        EventBus.getDefault().unregister(this);
    }
}

public class MsgLoveAdapter extends ArrayAdapter {
    public static final String TAG = "MsgLoveAdapter";
    List mMsgLoveList;
    private int resourceId;
    public MsgLoveAdapter(@NonNull Context context, int resource, @NonNull List objects) {
        super(context, resource, objects);
        resourceId = resource;
    }
    @NonNull
    @Override
    public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
        MsgLove msgLove = getItem(position);
        ViewHolder viewHolder;
        View view;
        if (convertView == null) {
            view = LayoutInflater.from(getContext()).inflate(resourceId, null);
            viewHolder = new ViewHolder();
            viewHolder.loveTo = view.findViewById(R.id.love_to);
            viewHolder.loveFrom = view.findViewById(R.id.love_from);
            viewHolder.loveContent = view.findViewById(R.id.love_content);
            view.setTag(viewHolder);
        } else {
            view = convertView;
            viewHolder = (ViewHolder) view.getTag();
        }
        viewHolder.loveTo.setText(msgLove.getTo());
        viewHolder.loveContent.setText(msgLove.getContent());
        viewHolder.loveFrom.setText(msgLove.getFrom());
        return view;
    }
    class ViewHolder {
        TextView loveTo;
        TextView loveFrom;
        TextView loveContent;
        SimpleDraweeView loveImg;
    }
}

public class DialogUtils {
    public static void addLoveDialog(Context context) {
        View view = LayoutInflater.from(context).inflate(R.layout.add_love_tip, null);
        EditText etLoveTo = view.findViewById(R.id.et_love_to);
        EditText etLoveFrom = view.findViewById(R.id.et_love_from);
        EditText etLoveSays = view.findViewById(R.id.et_love_says);
        Button btnLovePublish = view.findViewById(R.id.btn_love_publish);
        Button btnLoveCancel = view.findViewById(R.id.btn_love_cancel);
        final Dialog dialog = new AlertDialog.Builder(context)
                .setView(view)
                .setCancelable(true)
                .create();
        btnLovePublish.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                if (TextUtils.isEmpty(etLoveTo.getText().toString()) || TextUtils.isEmpty(etLoveFrom.getText().toString())
                || TextUtils.isEmpty(etLoveSays.getText().toString())){
                    ToastUtils.showShort(context,context.getString(R.string.tip_empty));
                    return;
                }
                MsgLove msgLove = new MsgLove();
                MyUser myUser = MyUser.getCurrentUser(MyUser.class);
                msgLove.setUsername(myUser.getUsername());
                msgLove.setTo(etLoveTo.getText().toString());
                msgLove.setFrom(etLoveFrom.getText().toString());
                msgLove.setContent(etLoveSays.getText().toString());
                msgLove.save(new SaveListener() {
                    @Override
                    public void done(String s, BmobException e) {
                        if (e == null) {
                            ToastUtils.showShort(context,context.getString(R.string.love_send));
                            EventBus.getDefault().post(new MessageEvent(ConstantConfig.UPDATE_LOVE));
                            dialog.dismiss();
                        } else {
                            ToastUtils.showShort(context,context.getString(R.string.love_fail));
                        }
                    }
                });
            }
        });
        btnLoveCancel.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                dialog.dismiss();
            }
        });
        dialog.show();
    }
}

作者：江南233