TYC OneWeek
第一步 依赖
/* ButterKnife 依赖 */
implementation ‘com.jakewharton:butterknife:10.2.3’
annotationProcessor ‘com.jakewharton:butterknife-compiler:10.2.3’
/* OkHttp */
implementation("com.squareup.okhttp3:okhttp:4.8.1")
implementation'com.squareup.okhttp3:logging-interceptor:4.8.1'
/* RecycleView */
implementation 'com.android.support:recyclerview-v7:27.1.1'
/* Gson */
implementation 'com.google.code.gson:gson:2.8.6'
/* Fresco */
implementation 'com.facebook.fresco:fresco:2.3.0'
标题
/* EventBus */
implementation 'org.greenrobot:eventbus:3.2.0'
/* 二维码 */
implementation 'cn.yipianfengye.android:zxing-library:2.2'
在上面的
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
第二步 分包 创建类
1.
**api包(
api类**( /* 搜索接口 */
public static final String SEARCH_URL = "http://172.17.8.100/small/commodity/v1/findCommodityByKeyword?page=1&count=10&keyword=%E6%89%8B%E6%9C%BA";
))
**2.
app包(SmallApp类)**(_
public class SmallApp extends Application {
@Override
public void onCreate() {
super.onCreate();
// 初始化Fresco
Fresco.initialize(this);
/* 初始化二维码 */
ZXingLibrary.initDisplayOpinion(this);
}
)
3.
base包
BaseActivity类
public abstract class BaseActivity
extends AppCompatActivity {
private Unbinder bind;
protected P mPresenter;
@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// Activity创建 的声明周期方法
setContentView(setView());
// ButterKnif 的绑定
bind = ButterKnife.bind(this);
// 初始化p 绑定视图
if (mPresenter == null) {
mPresenter = createPresenter();
}
mPresenter.attachView(this);
loadData();
}
/**
* 加载数据
*/
protected abstract void loadData();
/**
* 创建Presenter的方法，让子类实现
* @return
*/
protected abstract P createPresenter();
/**
* 子类初始化布局的方法
* @return
*/
protected abstract int setView();
@Override
protected void onDestroy() {
super.onDestroy();
bind.unbind();
mPresenter.detachView();
}
}
BasePresenter类
public abstract class BasePresenter
protected M model;
//protected V view;
protected WeakReference view;
/**
* 绑定View
*
* @param v
*/
public void attachView(V v) {
// 用弱引用操作V
view = new WeakReference<>(v);
model = createModel();
}
/**
* 创建Mode的方法
*
* @return
*/
protected abstract M createModel();
public V getView() {
return view.get();
}
/**
* 解绑View
*/
public void detachView() {
if (view.get() != null) {
view.clear();
view = null;
}
if (model != null) {
model = null;
}
}
}
4.
event包
AddShopCart类
public class AddShopCart {
private String shopTitle;
public AddShopCart(String shopTitle) {
this.shopTitle = shopTitle;
}
public String getShopTitle() {
return shopTitle;
}
public void setShopTitle(String shopTitle) {
this.shopTitle = shopTitle;
}
}
CreateQrCodeEvent类
public class CreateQrCodeEvent {
private String shopTitle;
private Bitmap shopBitmap;
public CreateQrCodeEvent(String shopTitle, Bitmap shopBitmap) {
this.shopTitle = shopTitle;
this.shopBitmap = shopBitmap;
}
public String getShopTitle() {
return shopTitle;
}
public void setShopTitle(String shopTitle) {
this.shopTitle = shopTitle;
}
public Bitmap getShopBitmap() {
return shopBitmap;
}
public void setShopBitmap(Bitmap shopBitmap) {
this.shopBitmap = shopBitmap;
}
}
5.
home包
adapter包
HomeAdapter类
public class HomeAdapter extends RecyclerView.Adapter
List resultBeans;
public HomeAdapter(List resultBeans) {
this.resultBeans = resultBeans;
}
@NonNull
@Override
public HomeViewHolder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
return new HomeViewHolder(LayoutInflater.from(parent.getContext()).inflate(R.layout.home_item, parent, false));
}
@Override
public void onBindViewHolder(@NonNull HomeViewHolder holder, int position) {
holder.shopImage.setImageURI(resultBeans.get(position).getMasterPic());
holder.tvShopName.setText(resultBeans.get(position).getCommodityName());
holder.ivAddShopCart.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
// 发送普通事件
AddShopCart addShopCart = new AddShopCart(resultBeans.get(position).getCommodityName());
EventBus.getDefault().post(addShopCart);
}
});
holder.itemView.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
// 发送粘性事件，到第二个页面生成二维码
// 获取商品图片的Bitmap
FileBinaryResource resource = (FileBinaryResource) Fresco.getImagePipelineFactory().getMainFileCache().getResource(new SimpleCacheKey(resultBeans.get(position).getMasterPic()));
Bitmap bitmap = BitmapFactory.decodeFile(resource.getFile().getPath());
CreateQrCodeEvent createQrCodeEvent = new CreateQrCodeEvent(resultBeans.get(position).getCommodityName(), bitmap);
EventBus.getDefault().postSticky(createQrCodeEvent);
holder.itemView.getContext().startActivity(new Intent(holder.itemView.getContext(), QrCodeActivity.class));
}
});
}
@Override
public int getItemCount() {
return resultBeans.size();
}
public static class HomeViewHolder extends RecyclerView.ViewHolder {
@BindView(R.id.shop_image)
SimpleDraweeView shopImage;
@BindView(R.id.tv_shop_name)
TextView tvShopName;
@BindView(R.id.add_shop_cart)
ImageView ivAddShopCart;
public HomeViewHolder(@NonNull View itemView) {
super(itemView);
ButterKnife.bind(this, itemView);
}
/* @OnClick(R.id.add_shop_cart)
public void onAddShopCart() {
//System.out.println("点击添加");
AddShopCart addShopCart = new AddShopCart();
}*/
}
}
contract类
public interface HomeContract {
interface IHomeModel {
// 从服务器获取数据的方法
void getData(String url, OkHttpUtil.HttpCallBack callBack);
}
interface IHomeView {
// 显示数据的方法
void showData(String result);
}
interface IHomePresenter {
// 请求数据的业务
void getHomeData();
}
m包
**加粗样式**
bean包
HomeModelImpl类
public class HomeModelImpl implements HomeContract.IHomeModel {
@Override
public void getData(String url, OkHttpUtil.HttpCallBack callBack) {
// 调用OkHttpUtils请求数据
OkHttpUtil.getInstance().get(url, callBack);
}
}
p包
HomePresenterImpl类
public class HomePresenterImpl extends BasePresenter
@Override
public void getHomeData() {
model.getData(Api.SEARCH_URL, new OkHttpUtil.HttpCallBack() {
@Override
public void onSuccess(String result) {
getView().showData(result);
}
@Override
public void onFailure(String error) {
}
});
}
@Override
protected HomeContract.IHomeModel createModel() {
return new HomeModelImpl();
}
}
v包
MainActivity类
public class MainActivity extends BaseActivity implements HomeContract.IHomeView {
@BindView(R.id.rv_home) RecyclerView rvHome;
@Override
protected void loadData() {
mPresenter.getHomeData();
}
@Override
protected HomePresenterImpl createPresenter() {
return new HomePresenterImpl();
}
@Override
protected int setView() {
return R.layout.activity_main;
}
@Override
public void showData(String result) {
Log.i("TAG", result);
Gson gson = new Gson();
HomeBean homeBean = gson.fromJson(result, HomeBean.class);
/* 首页要展示的列表数据 */
List resultBeans = homeBean.getResult();
// 设置布局管理器
rvHome.setLayoutManager(new LinearLayoutManager(this));
// 设置适配器
rvHome.setAdapter(new HomeAdapter(resultBeans));
}
@Subscribe(threadMode = ThreadMode.MAIN)
public void onAddShopCartEvent(AddShopCart addShopCart) {
Toast.makeText(this, "添加" + addShopCart.getShopTitle() + "到购物车", Toast.LENGTH_SHORT).show();
}
@Override
protected void onStart() {
super.onStart();
EventBus.getDefault().register(this);
}
@Override
protected void onStop() {
super.onStop();
EventBus.getDefault().unregister(this);
}
}
加粗样式
qrcode包
QrCodeActivity类
public class QrCodeActivity extends AppCompatActivity {
@BindView(R.id.iv_qrcode)
ImageView imageView;
private Bitmap qrCodeBitmap;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_qr_code);
ButterKnife.bind(this);
imageView.setOnLongClickListener(new View.OnLongClickListener() {
@Override
public boolean onLongClick(View view) {
MultiFormatReader multiFormatReader = new MultiFormatReader();
// 解码的参数
Hashtable hints = new Hashtable(2);
// 可以解析的编码类型
Vector decodeFormats = new Vector();
if (decodeFormats == null || decodeFormats.isEmpty()) {
decodeFormats = new Vector();
// 这里设置可扫描的类型，我这里选择了都支持
decodeFormats.addAll(DecodeFormatManager.ONE_D_FORMATS);
decodeFormats.addAll(DecodeFormatManager.QR_CODE_FORMATS);
decodeFormats.addAll(DecodeFormatManager.DATA_MATRIX_FORMATS);
}
hints.put(DecodeHintType.POSSIBLE_FORMATS, decodeFormats);
// 设置继续的字符编码格式为UTF8
// hints.put(DecodeHintType.CHARACTER_SET, "UTF8");
// 设置解析配置参数
multiFormatReader.setHints(hints);
// 开始对图像资源解码
Result rawResult = null;
try {
rawResult = multiFormatReader.decodeWithState(new BinaryBitmap(new HybridBinarizer(new BitmapLuminanceSource(qrCodeBitmap))));
} catch (Exception e) {
e.printStackTrace();
}
Toast.makeText(QrCodeActivity.this, rawResult.getText(), Toast.LENGTH_SHORT).show();
return true;
}
});
}
@Subscribe(threadMode = ThreadMode.MAIN, sticky = true)
public void onCreateQrCodeEvent(CreateQrCodeEvent createQrCodeEvent) {
// 生成二维码
//System.out.println(createQrCodeEvent.getShopTitle());
qrCodeBitmap = CodeUtils.createImage(createQrCodeEvent.getShopTitle(), 500, 500, createQrCodeEvent.getShopBitmap());
imageView.setImageBitmap(qrCodeBitmap);
}
@Override
protected void onStart() {
super.onStart();
EventBus.getDefault().register(this);
}
@Override
protected void onStop() {
super.onStop();
EventBus.getDefault().unregister(this);
}
}
util包
OkHttpUtil类
public class OkHttpUtil {
private OkHttpClient client;
private static OkHttpUtil util;
// 使用Handler把网络数据切换到主线程
private Handler mHandler;
private OkHttpUtil() {
// 日志拦截器
HttpLoggingInterceptor loggingInterceptor = new HttpLoggingInterceptor();
loggingInterceptor.setLevel(HttpLoggingInterceptor.Level.BODY);
// 通过Builder创建OkHttpClient
client = new OkHttpClient.Builder()
.addInterceptor(loggingInterceptor)
.build();
// 获取主线程的Handler
mHandler = new Handler(Looper.getMainLooper());
// 不添加拦截器
// client = new OkHttpClient();
}
public static OkHttpUtil getInstance() {
if (util == null) {
util = new OkHttpUtil();
}
return util;
}
public void get(String url, HttpCallBack callback) {
Request request = new Request.Builder()
.url(url)
.build();
client.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(@NotNull Call call, @NotNull IOException e) {
}
@Override
public void onResponse(@NotNull Call call, @NotNull Response response) throws IOException {
mHandler.post(new Runnable() {
@Override
public void run() {
// 通过Handler的post把数据发送到主线程
try {
callback.onSuccess(response.body().string());
} catch (IOException e) {
e.printStackTrace();
}
}
});
}
});
}
/**
* 响应数据的接口回调
*/
public interface HttpCallBack {
void onSuccess(String result);
void onFailure(String error);
}
}
加粗样式
activity_main.xml布局
android:layout_width=“match_parent”
android:layout_height=“match_parent” />
加粗样式
activity_qr_code.xml布局
权限
注册信息
-