如何将OAuth添加到Android应用以搜索推文

Question

我是Android编程的相对新手，我正在开发一个应用程序，根据用户的输入搜索推文。我有一个目前适用于APIv1的程序。我有消费者密钥，消费者秘密，访问令牌，访问令牌秘密。我需要一种方法，只授权我使用Twitter APIv1.1，然后使用JSON获取带有搜索词的推文。

这是我的Android Manifest文件：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.joel.twittersearchactivity">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
    <uses-permission android:name="android.permission.INTERNET"/>
</manifest>

这是我的MainActivity.java

package com.example.joel.twittersearchactivity;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.URLEncoder;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.StatusLine;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;

import org.json.JSONArray;
import org.json.JSONObject;
import android.os.AsyncTask;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
import android.view.View;
import android.widget.EditText;
import android.widget.TextView;

public class MainActivity extends Activity {

    private TextView tweetDisplay;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        tweetDisplay = (TextView)findViewById(R.id.tweet_txt);
    }


    public void searchTwitter(View view){
        EditText searchTxt = (EditText)findViewById(R.id.search_edit);
        String searchTerm = searchTxt.getText().toString();
        if(searchTerm.length()>0){
            try{
                String encodedSearch = URLEncoder.encode(searchTerm, "UTF-8");
                String searchURL = "https://api.twitter.com/1.1/search/tweets.json"+encodedSearch;
                new GetTweets().execute(searchURL);

            }
            catch(Exception e){
                tweetDisplay.setText("Whoops - something went wrong!");
                e.printStackTrace();
            }
        }
        else
            tweetDisplay.setText("Enter a search query!");
    }

    private class GetTweets extends AsyncTask<String, Void, String> {
        @Override
        protected String doInBackground(String... twitterURL) {
            StringBuilder tweetFeedBuilder = new StringBuilder();
            for (String searchURL : twitterURL) {
                HttpClient tweetClient = new DefaultHttpClient();
                try {
                    HttpGet tweetGet = new HttpGet(searchURL);
                    HttpResponse tweetResponse = tweetClient.execute(tweetGet);
                    StatusLine searchStatus = tweetResponse.getStatusLine();
                    if (searchStatus.getStatusCode() == 200) {
                        HttpEntity tweetEntity = tweetResponse.getEntity();
                        InputStream tweetContent = tweetEntity.getContent();
                        InputStreamReader tweetInput = new InputStreamReader(tweetContent);
                        BufferedReader tweetReader = new BufferedReader(tweetInput);
                        String lineIn;
                        while ((lineIn = tweetReader.readLine()) != null) {
                            tweetFeedBuilder.append(lineIn);
                        }
                    }
                    else
                        tweetDisplay.setText("Whoops - something went wrong!");
                }
                catch(Exception e){
                    tweetDisplay.setText("Whoops - something went wrong!");
                    e.printStackTrace();
                }
            }
            return tweetFeedBuilder.toString();
        }
        protected void onPostExecute(String result) {
            StringBuilder tweetResultBuilder = new StringBuilder();
            try {
                JSONObject resultObject = new JSONObject(result);
                JSONArray tweetArray = resultObject.getJSONArray("results");
                for (int t=0; t<tweetArray.length(); t++) {
                    JSONObject tweetObject = tweetArray.getJSONObject(t);
                    tweetResultBuilder.append(tweetObject.getString("from_user")+": ");
                    tweetResultBuilder.append(tweetObject.get("text")+"\n\n");
                }
            }
            catch (Exception e) {
                tweetDisplay.setText("Whoops - something went wrong!");
                e.printStackTrace();
            }
            if(tweetResultBuilder.length()>0)
                tweetDisplay.setText(tweetResultBuilder.toString());
            else
                tweetDisplay.setText("Sorry - no tweets found for your search!");
        }
    }


}

我已经将apache库包含在我的gradle中了，我知道它已经过时但是我正在按照教程进行操作，我现在不想更改它。

此外，我已根据Twitter的API文档更新了JSON的查询URL。

我按原样运行此应用，输出＆＃39;抱歉 - 找不到您的搜索推文！＆＃39; 我认为是由于错误代码：215这是如果您在没有OAuth的情况下查询Twitter API，则会显示。

提前致谢！