Android Dropbox API无法保存登录信息
作者：互联网
我是Android编程的初学者.我一直在努力让Dropbox融入我正在编写的应用程序的[开头].我按照说明查看了Dropbox API附带的基本示例DBRoulette.
我一直遇到的问题是我登录Dropbox(通过网络浏览器),然后确认该应用程序可以使用其Dropbox App文件夹……对于该会话,它工作正常,但是当我完全关闭应用程序并打开它再次,我被要求再次登录！我绝对不希望再次重新输入我的所有Dropbox登录内容,即使这仅仅是出于调试目的.
有趣的是DBRoulette工作正常,我不必每次都登录！我复制粘贴了该示例中的大部分功能代码.
我们在谈论它时,AccessTokens究竟包含/做什么？他们是否存储信息以创建授权会话？这些信息是否与我从Dropbox开发者网站获得的App key / secret组合不同？我认为这是我的错误,但我不确定.
这是活动：
package com.JS.music;
import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
import com.dropbox.client2.DropboxAPI;
import com.dropbox.client2.android.AndroidAuthSession;
import com.dropbox.client2.session.AccessTokenPair;
import com.dropbox.client2.session.AppKeyPair;
import com.dropbox.client2.session.TokenPair;
import com.dropbox.client2.session.Session.AccessType;
public class MainActivity extends Activity {
private static String TAG = "MainActivity";
private Button gotoRecordingButton;
private Button libraryButton;
//Dropbox
final static private String APP_KEY = "xxxxxxxxxxxxx";
final static private String APP_SECRET = "xxxxxxxxxxxxxx";
final static private AccessType ACCESS_TYPE = AccessType.APP_FOLDER;
private DropboxAPI<AndroidAuthSession> mDBApi;
final static public String ACCOUNT_PREFS_NAME = "MusicDBPrefs";
final static public String ACCESS_KEY_NAME = "Music_DB_ACCESS_KEY";
final static public String ACCESS_SECRET_NAME = "Music_DB_ACCESS_SECRET";
private boolean mIsLoggedIn = false;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
gotoRecordingButton = (Button) findViewById(R.id.goto_recording_button);
gotoRecordingButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this, RecordActivity.class);
startActivity(intent);
}
});
libraryButton = (Button) findViewById(R.id.library_button);
libraryButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
}
});
AndroidAuthSession session = buildSession();
mDBApi = new DropboxAPI<AndroidAuthSession>(session);
mDBApi.getSession().startAuthentication(MainActivity.this);
setLoggedIn(mDBApi.getSession().isLinked());
Toast msg = Toast.makeText(this, "logged in: " + isLoggedIn(), Toast.LENGTH_LONG);
msg.show();
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
//-------------Dropbox stuff for testing and debugging---------
@Override
protected void onResume() {
super.onResume();
AndroidAuthSession session = mDBApi.getSession();
// The next part must be inserted in the onResume() method of the
// activity from which session.startAuthentication() was called, so
// that Dropbox authentication completes properly.
if (session.authenticationSuccessful()) {
try {
// Mandatory call to complete the auth
session.finishAuthentication();
// Store it locally in our app for later use
TokenPair tokens = session.getAccessTokenPair();
storeKeys(tokens.key, tokens.secret);
setLoggedIn(true);
} catch (IllegalStateException e) {
Log.i(TAG, "Error authenticating", e);
}
}
}
//copied from dropbox API
private void storeKeys(String key, String secret) {
// Save the access key for later
SharedPreferences prefs = getSharedPreferences(ACCOUNT_PREFS_NAME, 0);
Editor edit = prefs.edit();
edit.putString(ACCESS_KEY_NAME, key);
edit.putString(ACCESS_SECRET_NAME, secret);
edit.commit();
}
private String[] getKeys() {
SharedPreferences prefs = getSharedPreferences(ACCOUNT_PREFS_NAME, 0);
String key = prefs.getString(ACCESS_KEY_NAME, null);
String secret = prefs.getString(ACCESS_SECRET_NAME, null);
if (key != null && secret != null) {
Log.i(TAG,"Got keys");
String[] ret = new String[2];
ret[0] = key;
ret[1] = secret;
return ret;
} else {
return null;
}
}
private AndroidAuthSession buildSession() {
AppKeyPair appKeyPair = new AppKeyPair(APP_KEY, APP_SECRET);
AndroidAuthSession session;
String[] stored = getKeys();
if (stored != null) {
AccessTokenPair accessToken = new AccessTokenPair(stored[0], stored[1]);
session = new AndroidAuthSession(appKeyPair, ACCESS_TYPE, accessToken);
} else {
session = new AndroidAuthSession(appKeyPair, ACCESS_TYPE);
}
return session;
}
public void setLoggedIn(boolean loggedIn) {
mIsLoggedIn = loggedIn;
}
public boolean isLoggedIn() {
return mIsLoggedIn;
}
}
任何帮助赞赏！
解决方法:
使用DropboxApi时的主要想法是：在第一次连接时,您必须获取密钥,下次必须使用这些密钥才能访问而无需通过浏览器确认.
即在onResume方法中你应该使用这一行
AccessTokenPair tokens = mDBApi.getSession().getAccessTokenPair();
其中DropboxAPI mDBApi;
然后你需要保存数据
AccessTokenPair tokens
在sqlite或SharedPrefs中.
那你应该使用这样的方法：
private DropboxAPI <AndroidAuthSession> getDropboxAPI(){
AppKeyPair appKeys = new AppKeyPair(APP_KEY, APP_SECRET);
AndroidAuthSession session = new AndroidAuthSession(appKeys, ACCESS_TYPE);
mDBApi = new DropboxAPI<AndroidAuthSession>(session);
AccessKeys keys = dm.getAccessKeys(APP_KEY); //dm is DatabaseManager of ORMLite
if (keys == null) return null;
AccessTokenPair access = new AccessTokenPair(keys.getAccessKey(), keys.getAccessSecret());
mDBApi.getSession().setAccessTokenPair(access);
return mDBApi;
}
…
AccessKeys是我通过ORMLite存储密钥的类：
@DatabaseTable
public class AccessKeys {
...
@DatabaseField private String accessKey;
@DatabaseField private String accessSecret;
@DatabaseField private String appKey;
@DatabaseField private String appSecret;
...}
最后一件事：当你拿到所有钥匙时,你不应该跑
mDBApi.getSession().startAuthentication(MainActivity.this);
只需使用mDBApi作为目标,例如“mDBApi.putFile(some data)”
Note: You only need to do startAuthentication() once, You don’t need to run it to authorize the key pair from the actual login.
标签：dropbox-api,android 来源： https://codeday.me/bug/20190723/1508485.html