github:https://github.com/LGQ1001/greendao_Demo底层的build.gradle buildscript { repositories { google() jcenter() mavenCentral() // add repository } dependencies { classpath 'com.android.tools.build:gradle:3.0.0' classpath 'org.greenrobot:greendao-gradle-plugin:3.2.2' // NOTE: Do not place your application dependencies here; they belong // in the individual module build.gradle files } }
本层build.gradle
apply plugin: 'com.android.application'
apply plugin: 'org.greenrobot.greendao' compile 'com.google.code.gson:gson:2.2.4'
implementation 'com.squareup.okhttp3:okhttp:3.11.0'
compile 'com.android.support:design:27.+'
implementation 'com.android.support:support-v4:27.+'
implementation 'com.jakewharton:butterknife:8.8.1'
annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'
implementation 'org.greenrobot:greendao:3.2.2'
implementation 'com.facebook.fresco:fresco:0.12.0'
// 在 API < 14 上的机器支持 WebP 时，需要添加
compile 'com.facebook.fresco:animated-base-support:0.12.0'
// 支持 GIF 动图，需要添加
implementation 'com.facebook.fresco:animated-gif:0.12.0'
// 支持 WebP （静态图+动图），需要添加
implementation 'com.facebook.fresco:animated-webp:0.12.0'
implementation 'com.facebook.fresco:webpsupport:0.12.0'
//xrecyclerview
implementation 'com.jcodecraeer:xrecyclerview:1.5.9'
}
configurations.all {
resolutionStrategy.eachDependency { DependencyResolveDetails details ->
def requested = details.requested
if (requested.group == 'com.android.support') {
if (!requested.name.startsWith("multidex")) {
details.useVersion '27.1.1'
}
}
}
}
依赖
<uses-permission android:name="android.permission.INTERNET" />
<application
android:name=".app.app"布局
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.bwie.main.zk1_lian02.activity.MainActivity">
<FrameLayout
android:id="@+id/fram_layout"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="9" />
<RadioGroup
android:id="@+id/rap"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1"
android:orientation="horizontal">
<RadioButton
android:id="@+id/rap1"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:text="首页"
android:textSize="25dp"
android:gravity="center"
android:button="@null"/>
<RadioButton
android:id="@+id/rap2"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:text="购物车"
android:textSize="25dp"
android:gravity="center"
android:button="@null"/>
<RadioButton
android:id="@+id/rap3"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:text="附近"
android:textSize="25dp"
android:gravity="center"
android:button="@null"/>
<RadioButton
android:id="@+id/rap4"
android:layout_width="0dp"
android:layout_height="match_parent"
android:layout_weight="1"
android:text="我的"
android:textSize="25dp"
android:gravity="center"
android:button="@null"/>
</RadioGroup>
</LinearLayout>
activity_fragment1.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
tools:context="com.bwie.main.zk1_lian02.fragment.Fragment1">
<android.support.v7.widget.RecyclerView
android:id="@+id/recycleview"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>
include1.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:fresco="http://schemas.android.com/tools"
android:orientation="vertical">
<com.facebook.drawee.view.SimpleDraweeView
android:id="@+id/my_image_view"
android:layout_width="150dp"
android:layout_height="150dp"
fresco:placeholderTmage="@mipmap/ic_launcher" />
<TextView
android:id="@+id/bt"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="title1"
android:textSize="20sp"/>
</LinearLayout>
代码
MainActivity
public class MainActivity extends AppCompatActivity {
@BindView(R.id.fram_layout)
FrameLayout frameLayout;
private FragmentManager manager;
private RadioGroup rap;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ButterKnife.bind(this);
rap = findViewById(R.id.rap);
//创建对象
final Fragment1 fragment1 = new Fragment1();
final Fragment2 fragment2 = new Fragment2();
final Fragment3 fragment3 = new Fragment3();
final Fragment4 fragment4 = new Fragment4();
//创建默认提交事务
manager = getSupportFragmentManager();
manager.beginTransaction().replace(R.id.fram_layout,fragment1).commit();
rap.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup radioGroup, int i) {
FragmentTransaction transaction = manager.beginTransaction();
switch (i){
case R.id.rap1:
transaction.replace(R.id.fram_layout,fragment1);
break;
case R.id.rap2:
transaction.replace(R.id.fram_layout,fragment2);
break;
case R.id.rap3:
transaction.replace(R.id.fram_layout,fragment3);
break;
case R.id.rap4:
transaction.replace(R.id.fram_layout,fragment4);
break;
}
//提交事务
transaction.commit();
}
});
}
}bean
news -》forment数据
work
@Entity
public class work {
@Id(autoincrement = true)
Long id;
@Property
String imgurl;
@Property
String title1;Build -》Make project
app
public class app extends Application {
private DaoSession daoSession;
private static app app;
@Override
public void onCreate() {
super.onCreate();
//上下文
app = app.this;
//初始化
Fresco.initialize(this);
//获得具体事务
DaoMaster.DevOpenHelper helper = new DaoMaster.DevOpenHelper(this,"bwie");
//获得可读可写数据库
SQLiteDatabase db = helper.getWritableDatabase();
//配置默认信息
DaoMaster daoMaster = new DaoMaster(db);
//做增删改查
daoSession = daoMaster.newSession();
}
public static app getinstance(){
if (app == null){
app = new app();
}
return app;
}
//提供方法
public DaoSession daoSession(){
return daoSession;
}
}
HttpUtils
public class HttpUtils {
//成员变量
private static HttpUtils httpUtils;
private OkHttpClient okHttpClient;
//私有构造
private HttpUtils(){
okHttpClient = new OkHttpClient.Builder()
.addInterceptor(new longinterceptor())
.build();
}
//拦截器方法
class longinterceptor implements Interceptor{
@Override
public Response intercept(Chain chain) throws IOException {
//请求对象
Request request = chain.request();
//创建方法
String method = request.method();
//添加日志信息
Log.i("xxx",method+"");
//接收对象
Response response = chain.proceed(request);
return response;
}
}
//单例
public static HttpUtils getinstance(){
if (httpUtils == null){
synchronized (HttpUtils.class){
if (httpUtils == null){
httpUtils = new HttpUtils();
}
}
}
return httpUtils;
}
//post方法
public void getpost(String path, Callback callback){
Request request = new Request.Builder().url(path).build();
Call call = okHttpClient.newCall(request);
call.enqueue(callback);
}
}mvp
icontract
public interface icontract {
//iview层
public interface iview{
void showdata(List<work> works);
}
//imoudle层
public interface imoudle{
//接口
public interface oncalllisten{
//请求方法
void responsemsg(List<work> works);
}
//方法
void requestdata(oncalllisten oncalllisten);
}
//ipresebnter层
public interface ipresebnter<iview>{
//关联
void attachview(iview iview);
//取消
void detachview(iview iview);
//逻辑方法
void requestinfo();
}
}moudleimp
public class moudleimp implements icontract.imoudle{
private String path = "https://www.apiopen.top/meituApi?page=1";
@Override
public void requestdata(final oncalllisten oncalllisten) {
//获取数据库存
final workDao workDao = app.getinstance().daoSession().getWorkDao();
//全查
final List<work> works = workDao.loadAll();
//判断
if (works.size()>0){
//进行接口回传
oncalllisten.responsemsg(works);
return;
}
//查不到进行网络请求
HttpUtils httpUtils = HttpUtils.getinstance();
httpUtils.getpost(path, new Callback() {
@Override
public void onFailure(Call call, IOException e) {
//失败
oncalllisten.responsemsg(null);
}
@Override
public void onResponse(Call call, Response response) throws IOException {
//成功
String json = response.body().string();
//进行解析
Gson gson = new Gson();
//获取数据
news news = gson.fromJson(json, news.class);
Log.i("eee",news+"");
//得到对象
List<com.bwie.main.zk1_lian02.bean.news.DataBean> data = news.getData();
//创建新集合进行回传
ArrayList<work> works1 = new ArrayList<>();
//进行遍历
for (int i = 0; i < data.size(); i++) {
//获取数据
String url = data.get(i).getUrl();
String desc = data.get(i).getType();
//创建对象
work work = new work();
work.setImgurl(url);
work.setTitle1(desc);
//添加到集合中
works1.add(work);
}
//接口回传
oncalllisten.responsemsg(works1);
//存到数据库
workDao.insertInTx(works1);
}
});
}
presenterimp
public class presenterimp implements icontract.ipresebnter<icontract.iview>{
private WeakReference<icontract.iview> iviewWeakReference;
private icontract.iview iview;
private moudleimp moudleimp;
private WeakReference<icontract.imoudle> weakReference;
@Override
public void attachview(icontract.iview iview) {
this.iview = iview;
moudleimp = new moudleimp();
//创建弱引用
iviewWeakReference = new WeakReference<>(iview);
weakReference = new WeakReference<icontract.imoudle>(moudleimp);
}
@Override
public void detachview(icontract.iview iview) {
//取消关联
iviewWeakReference.clear();
weakReference.clear();
}
@Override
public void requestinfo() {
//接口回调
moudleimp.requestdata(new icontract.imoudle.oncalllisten() {
@Override
public void responsemsg(List<work> works) {
//v层里面的方法
iview.showdata(works);
Log.i("xxx",works+"");
}
});
}
}adapter
myadapter
public class myadapter extends RecyclerView.Adapter<myadapter.oneholder>{
private Context context;
private List<work> list;
public myadapter(Context context, List<work> list) {
this.context = context;
this.list = list;
}
@NonNull
@Override
public oneholder onCreateViewHolder(@NonNull ViewGroup parent, int viewType) {
View view = LayoutInflater.from(context).inflate(R.layout.include1, null);
//创建对象
oneholder oneholder = new oneholder(view);
return oneholder;
}
@Override
public void onBindViewHolder(@NonNull oneholder holder, int position) {
holder.bt.setText(list.get(position).getTitle1());
//获取路径
Uri uri = Uri.parse(list.get(position).getImgurl());
//设置图片
holder.my_image_view.setImageURI(uri);
}
@Override
public int getItemCount() {
return list.size();
}
//创建类
class oneholder extends RecyclerView.ViewHolder{
private final TextView bt;
private final SimpleDraweeView my_image_view;
public oneholder(View itemView) {
super(itemView);
//创建视图
bt = itemView.findViewById(R.id.bt);
my_image_view = itemView.findViewById(R.id.my_image_view);
}
}
Fragment1
public class Fragment1 extends Fragment implements icontract.iview{
@BindView(R.id.recycleview)
RecyclerView recycleview;
Unbinder unbinder;
private presenterimp presenterimp;
@Nullable
@Override
public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
View view = inflater.inflate(R.layout.activity_fragment1,container,false);
unbinder = ButterKnife.bind(this, view);
presenterimp = new presenterimp();
presenterimp.attachview(this);
presenterimp.requestinfo();
return view;
}
@Override
public void onDestroyView() {
super.onDestroyView();
unbinder.unbind();
presenterimp.detachview(this);
}
@Override
public void showdata(final List<work> works) {
//强制切回主线程
getActivity().runOnUiThread(new Runnable() {
@Override
public void run() {
//创建布局管理器
GridLayoutManager manager = new GridLayoutManager(getActivity(), 2, GridLayoutManager.VERTICAL, false);
//添加布局管理器
recycleview.setLayoutManager(manager);
//创建适配器
myadapter myadapter = new myadapter(getActivity(),works);
//添加适配器
recycleview.setAdapter(myadapter);
}
});
}
}