1.网络权限的添加:
<uses-permission android:name="android.permission.INTERNET"></uses-permission>
2.LoginUtils封装
package zm.ztd.com.rx_login.utils;
import java.io.IOException;
import java.util.Map;
import okhttp3.Call;
import okhttp3.Callback;
import okhttp3.FormBody;
import okhttp3.OkHttpClient;
import okhttp3.Request;
import okhttp3.RequestBody;
import okhttp3.Response;
import rx.Observable;
import rx.Subscriber;
/**
* 使用OKHttp访问网络
* Created by Administrator on 2017-01-01.
*/
public class LoginUtils {
private OkHttpClient client;
public LoginUtils(){
client=new OkHttpClient();
}
/**
* 定义了login操作 使用Rx_Android编程思想
* @param url
* @param params
* @return
*/
public Observable<String> login(String url, Map<String,String> params){
return Observable.create(new Observable.OnSubscribe<String>() {
@Override
public void call(Subscriber<? super String> subscriber) {
if(!subscriber.isUnsubscribed()){
FormBody.Builder builder=new FormBody.Builder();
if(params!=null && !params.isEmpty()){
for(Map.Entry<String,String>entry:params.entrySet()){
builder.add(entry.getKey(),entry.getValue());
}
}
RequestBody requestBody=builder.build();
//构建post请求
Request request=new Request.Builder().url(url).post(requestBody).build();
client.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
subscriber.onError(e);
}
@Override
public void onResponse(Call call, Response response) throws IOException {
if(response.isSuccessful()){
subscriber.onNext(response.body().toString());
}
subscriber.onCompleted();//访问结束
}
});
}
}
});
}
}3.MainActivity.java实现登陆
package zm.ztd.com.rx_login;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import java.util.HashMap;
import java.util.Map;
import rx.Subscriber;
import rx.android.schedulers.AndroidSchedulers;
import rx.schedulers.Schedulers;
import zm.ztd.com.rx_login.utils.LoginUtils;
public class MainActivity extends AppCompatActivity {
private EditText etNumber;
private EditText etPassword;
private Button btnLogin;
private LoginUtils utils;
private final String url="";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
initEvents();
}
private void initEvents() {
btnLogin.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Map<String,String>params=new HashMap<String, String>();
params.put("username",etNumber.getText().toString().trim());
params.put("password",etPassword.getText().toString().trim());
utils.login(url,params).subscribeOn(Schedulers.io()).observeOn(AndroidSchedulers.mainThread()).subscribe(new Subscriber<String>() {
@Override
public void onCompleted() {
}
@Override
public void onError(Throwable e) {
Log.i("error",e.getMessage());
}
@Override
public void onNext(String s) {
Log.i("login",s);
}
});
}
});
}
private void initView() {
etNumber= (EditText) findViewById(R.id.et_number);
etPassword= (EditText) findViewById(R.id.et_password);
btnLogin= (Button) findViewById(R.id.btn_login);
}
}4.布局文件
<?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:orientation="vertical" android:layout_width="match_parent" android:layout_height="match_parent"> <LinearLayout android:layout_margin="20dp" android:orientation="horizontal" android:layout_width="match_parent" android:layout_height="wrap_content"> <TextView android:textSize="21dp" android:text="账号:" android:layout_weight="1" android:layout_width="0dp" android:layout_height="wrap_content" /> <EditText android:id="@+id/et_number" android:textSize="21dp" android:hint="请输入账号" android:layout_width="0dp" android:layout_weight="2" android:layout_height="wrap_content" /> </LinearLayout> <LinearLayout android:layout_margin="20dp" android:orientation="horizontal" android:layout_width="match_parent" android:layout_height="wrap_content"> <TextView android:textSize="21dp" android:text="密码:" android:layout_weight="1" android:layout_width="0dp" android:layout_height="wrap_content" /> <EditText android:id="@+id/et_password" android:textSize="21dp" android:inputType="textPassword" android:hint="请输入密码" android:layout_width="0dp" android:layout_weight="2" android:layout_height="wrap_content" /> </LinearLayout> <Button android:id="@+id/btn_login" android:text="登陆" android:background="#f00" android:gravity="center" android:textSize="21dp" android:layout_width="match_parent" android:layout_height="wrap_content" /> </LinearLayout>