Retrofit:Square提供的開源產品,爲Android平臺的應用提供一個類型安全的REST客戶端
https://github.com/square/retrofit
RxAndroid:響應式編程框架RxJava針對Android平臺的擴展。
https://github.com/ReactiveX/RxAndroid
https://github.com/ReactiveX/RxJava
Dagger2:依賴注入(或叫ioc,用過Spring的都知道這東東)框架,用於解耦的。
https://github.com/google/dagger/
使用 :
1、通過配置gradle配置將Retrofit框架引入項目。
compile 'com.squareup.retrofit:retrofit:2.0.0-beta2'
compile 'com.squareup.retrofit:converter-gson:2.0.0-beta2'
2、編寫API服務代碼
package com.micky.retrofitrxandroiddagger2.data.api;
import com.micky.retrofitrxandroiddagger2.data.api.response.GetIpInfoResponse;
import retrofit.Call;
import retrofit.http.GET;
import retrofit.http.Query;
import rx.Observable;
/**
* @Project retrofitrxandroiddagger2
* @Packate com.micky.retrofitrxandroiddagger2.data.api
* @Description
* @Author Micky Liu
* @Email [email protected]
* @Date 2015-12-21 17:22
* @Version 1.0
*/
public interface ApiService {
@GET("service/getIpInfo.php")
Call<GetIpInfoResponse> getIpInfo(@Query("ip") String ip);
}
3、定義接收數據的response
package com.micky.retrofitrxandroiddagger2.data.api.response;
import com.micky.retrofitrxandroiddagger2.data.api.model.IpInfo;
/**
* @Project CommonProject
* @Packate com.micky.commonproject.data.api.response
* @Description
* @Author Micky Liu
* @Email [email protected]
* @Date 2015-12-21 16:39
* @Version 1.0
*/
public class GetIpInfoResponse extends BaseResponse {
public IpInfo data;
}
4、請求數據並顯示
package com.micky.retrofitrxandroiddagger2;
import android.os.Bundle;
import android.support.design.widget.FloatingActionButton;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.view.Menu;
import android.view.MenuItem;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.Toast;
import com.micky.retrofitrxandroiddagger2.common.utils.CrashHandler;
import com.micky.retrofitrxandroiddagger2.data.api.ApiService;
import com.micky.retrofitrxandroiddagger2.data.api.response.GetIpInfoResponse;
import retrofit.Call;
import retrofit.Callback;
import retrofit.GsonConverterFactory;
import retrofit.Response;
import retrofit.Retrofit;
import retrofit.RxJavaCallAdapterFactory;
import rx.Subscriber;
import rx.android.schedulers.AndroidSchedulers;
import rx.functions.Action1;
import rx.schedulers.Schedulers;
/**
* @Project retrofitrxandroiddagger2
* @Packate com.micky.retrofitrxandroiddagger2
* @Description
* @Author Micky Liu
* @Email [email protected]
* @Date 2015-12-21 17:35
* @Version 1.0
*/
public class MainActivity extends AppCompatActivity {
private static final String ENDPOINT = "http://ip.taobao.com";
private TextView mTvContent;
private ProgressBar mProgressBar;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
mTvContent = (TextView) findViewById(R.id.tv_content);
mProgressBar = (ProgressBar) findViewById(R.id.progress_bar);
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Retrofit retrofit = new Retrofit.Builder()
.baseUrl(ENDPOINT)
.addConverterFactory(GsonConverterFactory.create())
.build();
ApiService apiService = retrofit.create(ApiService.class);
mProgressBar.setVisibility(View.VISIBLE);
Call<GetIpInfoResponse> call = apiService.getIpInfo("63.223.108.42");
call.enqueue(new Callback<GetIpInfoResponse>() {
@Override
public void onResponse(Response<GetIpInfoResponse> response, Retrofit retrofit) {
mProgressBar.setVisibility(View.GONE);
GetIpInfoResponse getIpInfoResponse = response.body();
mTvContent.setText(getIpInfoResponse.data.country);
}
@Override
public void onFailure(Throwable t) {
mProgressBar.setVisibility(View.GONE);
mTvContent.setText(t.getMessage());
}
});
}
});
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
int id = item.getItemId();
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
}
就這麼簡單,上述代碼已經實現通過retrofit訪問restful api獲取數據並顯示。