OAuth 2.0 使用 Android 应用程序访问 Foursquare API

如何解决OAuth 2.0 使用 Android 应用程序访问 Foursquare API

我正在尝试实施 OAuth 2.0 以访问我的 Android 应用程序上的 Foursquare API。使用 OAuth 2.0，我试图让我的用户注册和/或登录 Foursquare 并授予我的应用程序获取令牌的权限。

这是我迄今为止尝试过的方法，但似乎不起作用。有人可以帮我找出我的方法的问题吗？任何指针将不胜感激。非常感谢您的帮助！

我的主要活动：

package com.example.testingoauth;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.net.Uri;
import android.os.AsyncTask;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.Button;

import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONObject;

import java.io.BufferedReader;
import java.io.InputStreamReader;

public class MainActivity extends AppCompatActivity {

    private static final String CLIENT_ID = "myClientID";
    private static final String CLIENT_SECRET = "myClientSecret";
    private static final String YOUR_REGISTERED_REDIRECT_URI = "oauth-android-app://test";

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Button buttonLogin;
        buttonLogin = findViewById(R.id.btnLogin);

        buttonLogin.setonClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                loginToFoursquare();
            }
        });
    }

    private void loginToFoursquare() {
        Intent intent = new Intent(Intent.ACTION_VIEW);
        intent.setData(
                Uri.parse(
                        "https://foursquare.com/oauth2/authenticate" +
                        "?client_id=" + CLIENT_ID +
                        "&response_type=code" +
                        "&redirect_uri=" + YOUR_REGISTERED_REDIRECT_URI
                )
        );
        startActivity(intent);
    }

    public void onResume() {
        super.onResume();

        Uri uri = this.getIntent().getData();
        if (uri != null) {
            String code = null;

            if ((code = uri.getQueryParameter("code")) != null) {
                new gettingToken().execute(code);
            }
        }

    }

    private class gettingToken extends AsyncTask<String,String,String> {

        @Override
        protected String doInBackground(String... params) {
            try {
                JSONObject tokenjson = executeHttpGet(
                        "https://foursquare.com/oauth2/access_token" +
                                "?client_id=" + CLIENT_ID +
                                "&client_secret=" + CLIENT_SECRET +
                                "&grant_type=authorization_code" +
                                "&redirect_uri=" + YOUR_REGISTERED_REDIRECT_URI +
                                "&code=" + params[0]
                );
                String token = tokenjson.getString("access_token");
                JSONObject userjson = executeHttpGet(
                        "https://api.foursquare.com/v2/" +
                                "users/self/" +
                                "checkins" +
                                "?oauth_token=" + token +
                                "&v=20210701"
                );

                int returnCode = Integer.parseInt(userjson.getJSONObject("Meta").getString("code"));
                if (returnCode == 200) {
                    Log.i("LoginTest",userjson.getJSONObject("response").getJSONObject("user").toString());
                }else {
                    Log.e("LoginTest","Wrong return code: " + params[0]);
                }
            } catch (Exception e) {
                Log.e("LoginTest","Login to Foursquare Failed");
            }
            return null;
        }
    }

    private static JSONObject executeHttpGet(String uri) throws Exception{
        HttpGet req = new HttpGet(uri);

        HttpClient client = new DefaultHttpClient();
        HttpResponse resLogin = client.execute(req);
        BufferedReader r = new BufferedReader(new InputStreamReader(resLogin.getEntity().getContent()));
        StringBuilder sb = new StringBuilder();
        String s = null;
        while ((s = r.readLine()) != null) {
            sb.append(s);
        }
        return new JSONObject(sb.toString());
    }

}

我的 AndroidManifest.xml：（我为方案添加了意图过滤器）

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

    <uses-permission android:name="android.permission.INTERNET"/>

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.TestingOAuth">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
            <intent-filter>
                <action android:name="android.intent.action.VIEW" />
                <category android:name="android.intent.category.DEFAULT" />
                <category android:name="android.intent.category.broWSABLE" />
                <data android:scheme="oauth-android-app" />
            </intent-filter>

        </activity>
    </application>

</manifest>

我的 build.gradle：（除了我添加了 apache 库，我没有更改 Empty Activity 默认设置的任何内容）

plugins {
    id 'com.android.application'
}

android {
    compileSdkVersion 30
    buildToolsversion "30.0.3"
    useLibrary 'org.apache.http.legacy'

    defaultConfig {
        applicationId "com.example.testingoauth"
        minSdkVersion 16
        targetSdkVersion 30
        versionCode 1
        versionName "1.0"

        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }

    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'),'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

dependencies {

    implementation 'androidx.appcompat:appcompat:1.3.0'
    implementation 'com.google.android.material:material:1.4.0'
    implementation 'androidx.constraintlayout:constraintlayout:2.0.4'
    testImplementation 'junit:junit:4.+'
    androidTestImplementation 'androidx.test.ext:junit:1.1.3'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.4.0'

}