import android.os.Handler;
import android.os.Message;
import com.google.common.io.CharStreams;
import java.io.InputStreamReader;
import java.net.HttpURLConnection;
import java.net.URL;

public class HttpHelper {
private Handler handler=new Handler(){
    @Override
    public void handleMessage(Message msg) {
        super.handleMessage(msg);
        //用傳進來的msg 返回字串
        String s1 = (String) msg.obj;
        //去下面定義介面
        //呼叫介面的方法
        httpListener.success(s1);

    }
};
private HttpListener httpListener;

//公共的類名
public HttpHelper(){}

//doget  方法
public HttpHelper doget(String s){
    //獲取網路資料的方法
    dohttp(s);
    //記得返回this  強轉
    return this;
}

//請求網路資料的方法 傳字串
public void dohttp(final String s){
    //new 執行緒 點開始 run 方法
    new Thread(){
        @Override
        public void run() {
            super.run();
            //new url  傳字串 返回值
            try {
                URL url = new URL(s);
                //用url 開啟con  返回http
                HttpURLConnection connection = (HttpURLConnection) url.openConnection();
                //設定請求方式
                connection.setRequestMethod("GET");
                //設定連線超時
                connection.setConnectTimeout(5000);
                //設定讀取資料超時
                connection.setReadTimeout(5000);
                //判斷成功
                if(connection.getResponseCode()==HttpURLConnection.HTTP_OK){
                    //引入依賴 gson guava
                    //呼叫方法
                    String s1 = CharStreams.toString(new InputStreamReader(connection.getInputStream(), "UTF-8"));
                    //資訊點ob
                    Message message = Message.obtain();
                    //資訊點obj
                    message.obj=s1;
                    //handler 傳送訊息
                    handler.sendMessage(message);

                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }.start();
}

//介面回撥
public void result(HttpListener httpListener){
    //介面返回值 this. 提上去
    this.httpListener = httpListener;
}

//定義介面
public interface HttpListener{
    //成功方法傳字串
    void success(String s1);
}
}