GreenDao+ButterKnife+Retrofit+Fresco展示网络数据

来源：互联网发布：amarra for mac 编辑：程序博客网时间：2024/05/21 15:48

activity_main

<?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.exam.20171202.MainActivity">    <FrameLayout        android:id="@+id/frag"        android:layout_width="match_parent"        android:layout_height="match_parent"        android:layout_weight="1" />    <RadioGroup        android:id="@+id/rg"        android:layout_width="match_parent"        android:layout_height="match_parent"        android:orientation="horizontal"        android:layout_weight="9">        <RadioButton            android:id="@+id/rb1"            android:layout_width="match_parent"            android:layout_height="match_parent"            android:layout_weight="1"            android:button="@null"            android:gravity="center"            android:background="@drawable/ac0"/>        <RadioButton            android:id="@+id/rb2"            android:layout_width="match_parent"            android:layout_height="match_parent"            android:layout_weight="1"            android:button="@null"            android:gravity="center"            android:background="@drawable/abw"/>        <RadioButton            android:id="@+id/rb3"            android:layout_width="match_parent"            android:layout_height="match_parent"            android:layout_weight="1"            android:button="@null"            android:gravity="center"            android:background="@drawable/aby"/>        <RadioButton            android:id="@+id/rb4"            android:layout_width="match_parent"            android:layout_height="match_parent"            android:layout_weight="1"            android:button="@null"            android:gravity="center"            android:background="@drawable/abu"/>        <RadioButton            android:id="@+id/rb5"            android:layout_width="match_parent"            android:layout_height="match_parent"            android:layout_weight="1"            android:button="@null"            android:gravity="center"            android:background="@drawable/ac2"/>    </RadioGroup></LinearLayout>

fragment1

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical">    <android.support.v7.widget.RecyclerView        android:id="@+id/rv"        android:layout_width="match_parent"        android:layout_height="match_parent"/></LinearLayout>
item布局
<?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="150dp"    xmlns:app="http://schemas.android.com/apk/res-auto"    android:orientation="horizontal"    android:padding="20dp">    <com.facebook.drawee.view.SimpleDraweeView        android:id="@+id/sdv"        android:layout_width="120dp"        android:layout_height="120dp"        app:placeholderImage="@mipmap/ic_launcher_round"/>    <LinearLayout        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="vertical"        android:paddingLeft="20dp"        android:layout_marginTop="20dp">        <TextView            android:id="@+id/tv1"            android:layout_width="wrap_content"            android:layout_height="wrap_content" />        <TextView            android:id="@+id/tv2"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_marginTop="20dp"/>    </LinearLayout></LinearLayout>
MainActivity
public class MainActivity extends AppCompatActivity {    @BindView(R.id.rb1)    RadioButton rb1;    @BindView(R.id.rb2)    RadioButton rb2;    @BindView(R.id.rb3)    RadioButton rb3;    @BindView(R.id.rb4)    RadioButton rb4;    @BindView(R.id.rb5)    RadioButton rb5;    @BindView(R.id.rg)    RadioGroup rg;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        ButterKnife.bind(this);        Fragment1 fragment1 = new Fragment1();        getSupportFragmentManager().beginTransaction().replace(R.id.frag,fragment1).commit();        rb1.setBackgroundResource(R.drawable.ac1);    }    @OnClick({R.id.rb1,R.id.rb2,R.id.rb3,R.id.rb4,R.id.rb5})    public void onClick(View v) {        rb1.setBackgroundResource(R.drawable.ac0);        rb2.setBackgroundResource(R.drawable.abw);        rb3.setBackgroundResource(R.drawable.aby);        rb4.setBackgroundResource(R.drawable.abu);        rb5.setBackgroundResource(R.drawable.ac2);        switch (v.getId()) {            default:                break;            case R.id.rb1:                Fragment1 fragment1 = new Fragment1();                getSupportFragmentManager().beginTransaction().replace(R.id.frag,fragment1).commit();                rb1.setBackgroundResource(R.drawable.ac1);                break;            case R.id.rb2:                Fragment2 fragment2 = new Fragment2();                getSupportFragmentManager().beginTransaction().replace(R.id.frag,fragment2).commit();                rb2.setBackgroundResource(R.drawable.abx);                break;            case R.id.rb3:                Fragment3 fragment3 = new Fragment3();                getSupportFragmentManager().beginTransaction().replace(R.id.frag,fragment3).commit();                rb3.setBackgroundResource(R.drawable.abz);                break;            case R.id.rb4:                Fragment4 fragment4 = new Fragment4();                getSupportFragmentManager().beginTransaction().replace(R.id.frag,fragment4).commit();                rb4.setBackgroundResource(R.drawable.abv);                break;            case R.id.rb5:                Fragment5 fragment5 = new Fragment5();                getSupportFragmentManager().beginTransaction().replace(R.id.frag,fragment5).commit();                rb5.setBackgroundResource(R.drawable.ac3);                break;        }    }}
bean类
ClassBeans
public class ClassBeans<T> {    private boolean error;    private List<T> results;    public boolean isError() {        return error;    }    public void setError(boolean error) {        this.error = error;    }    public List<T> getResults() {        return results;    }    public void setResults(List<T> results) {        this.results = results;    }    @Override    public String toString() {        return "ClassBeans{" + "error=" + error + ", results=" + results + '}';    }}
DaoBean
@Entitypublic class DaoBean {//    @Id(autoincrement = true)//    private Long id;    private String _id;    private String createdAt;    private String desc;    private String publishedAt;    private String source;    private String type;    private String url;    private boolean used;    private String who;    @Convert(converter = ImageUtil.class,columnType = String.class)    public List<String> images;
}
GreenDaoManager
public class GreenDaoManager {    private static GreenDaoManager managers;    private static DaoMaster daoMaster;    private static DaoSession daoSession;    private GreenDaoManager(Context context){        DaoMaster.DevOpenHelper devOpenHelper = new DaoMaster.DevOpenHelper(context, "contacts-db",null);        SQLiteDatabase sqLiteDatabase = devOpenHelper.getWritableDatabase();        daoMaster = new DaoMaster(sqLiteDatabase);        daoSession = daoMaster.newSession();    }    public static GreenDaoManager getGreenDaoManager(Context context){        if (managers == null){            synchronized (GreenDaoManager.class){                if (managers == null){                    managers = new GreenDaoManager(context);                }            }        }        return managers;    }    public DaoSession getDaoSession(){        return daoSession;    }    public DaoMaster getDaoMaster(){        return daoMaster;    }}
MyApp--去清单文件注册
public class MyApp extends Application {    @Override    public void onCreate() {        super.onCreate();        Fresco.initialize(this);        GreenDaoManager.getGreenDaoManager(this);    }}
ServerApi
public interface ServerApi {    @GET("api/data/Android/{size}/{page}")    Call<ClassBeans<DaoBean>> list(@Path("size") int size,@Path("page") int page);}
RetrofitHelper
public class RetrofitHelper {    public static OkHttpClient client;    public static ServerApi serverApi;    static {        getClient();    }    public static OkHttpClient getClient() {        if (client == null){            synchronized (RetrofitHelper.class){                if (client == null){                    client = new OkHttpClient();                }            }        }        return client;    }    public static ServerApi getServerApi(){        if (serverApi == null){            synchronized (ServerApi.class){                if (serverApi == null){                    serverApi = OnCreatApi(ServerApi.class,"http://gank.io/");                }            }        }        return serverApi;    }    public static <T> T OnCreatApi(Class<T> tClass,String url){        Retrofit retrofit = new Retrofit.Builder()                .baseUrl(url)                .addConverterFactory(GsonConverterFactory.create())                .build();        return retrofit.create(tClass);    }}
ImageUtil--加载图片
public class ImageUtil implements PropertyConverter<List<String>, String> {    @Override    public List<String> convertToEntityProperty(String databaseValue) {        List<String> list = new ArrayList<>();        list.add(databaseValue);        return null;    }    @Override    public String convertToDatabaseValue(List<String> entityProperty) {        return (entityProperty == null && !entityProperty.isEmpty())?"" : entityProperty.get(0);    }}
Fragment1
public class Fragment1 extends Fragment {    private DaoBeanDao dao;    private RecyclerView rv;    @Nullable    @Override    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, Bundle savedInstanceState) {        View view = View.inflate(getActivity(), R.layout.fragment1, null);        rv = view.findViewById(R.id.rv);        LinearLayoutManager manager = new LinearLayoutManager(getActivity());        rv.setLayoutManager(manager);        //GreenDao        dao = GreenDaoManager.getGreenDaoManager(getActivity()).getDaoSession().getDaoBeanDao();        //Retrofit        ServerApi serverApi = RetrofitHelper.getServerApi();        final Call<ClassBeans<DaoBean>> list = serverApi.list(10, 1);        list.enqueue(new Callback<ClassBeans<DaoBean>>() {            @Override            public void onResponse(Call<ClassBeans<DaoBean>> call, Response<ClassBeans<DaoBean>> response) {                ClassBeans<DaoBean> classBeans=response.body();                for (DaoBean bean:response.body().getResults()) {                    dao.insert(bean);                }                List<DaoBean> results = classBeans.getResults();                Log.e("TAG",results+"");                rv.setAdapter(new RvAdapter(getContext(),results));            }            @Override            public void onFailure(Call<ClassBeans<DaoBean>> call, Throwable t) {            }        });        return view;    }}
RecyclerView的适配器
public class RvAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> {    private Context context;    private List<DaoBean> list;    public RvAdapter(Context context, List<DaoBean> list) {        this.context = context;        this.list = list;    }    @Override    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {        View view = View.inflate(context, R.layout.item, null);        return new MyViewHolder(view);    }    @Override    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {        MyViewHolder holder1 = (MyViewHolder) holder;        DaoBean daoBean = list.get(position);        List<String> images = daoBean.getImages();        if (images != null){            holder1.sdv.setImageURI(images.get(0));        }        holder1.tv1.setText(daoBean.getDesc());        holder1.tv2.setText(daoBean.getWho());    }    @Override    public int getItemCount() {        return list.size();    }    class MyViewHolder extends RecyclerView.ViewHolder{        SimpleDraweeView sdv;        TextView tv1;        TextView tv2;        public MyViewHolder(View itemView) {            super(itemView);            sdv = itemView.findViewById(R.id.sdv);            tv1 = itemView.findViewById(R.id.tv1);            tv2 = itemView.findViewById(R.id.tv2);        }    }}
依赖包
compile 'com.facebook.fresco:fresco:1.5.0'compile 'com.android.support:recyclerview-v7:26.1.0'compile 'com.squareup.okhttp3:okhttp:3.9.0'
compile 'com.google.code.gson:gson:2.8.2'
compile 'org.greenrobot:greendao:3.2.0'annotationProcessor 'org.greenrobot:eventbus-annotation-processor:3.1.1'compile 'com.jakewharton:butterknife:8.8.1'annotationProcessor 'com.jakewharton:butterknife-compiler:8.8.1'compile 'com.squareup.retrofit2:retrofit:2.0.0-beta4'//Retrofit2所需要的包compile 'com.squareup.retrofit2:converter-gson:2.0.0-beta4'//ConverterFactory的Gson依赖包compile 'com.squareup.retrofit2:converter-scalars:2.0.0-beta4'//ConverterFactory的String依赖包
apply plugin: 'org.greenrobot.greendao'
classpath 'org.greenrobot:greendao-gradle-plugin:3.2.2'

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