(转摘)Android腾讯微博客户端开发3:多账号管理的实现

列表中的账号是保存在sqlite数据库中的，下方的大图片是显示你选择的默认账号，双击图片就会显示此账号的主页








点击添加账号，将会跳向腾讯的授权页面，这个页面我是放在WebView中的，当授权成功后，腾讯的API将会返回给我们一个验证码，然后返回到我们的账号管理界面。

public class AccountActivity extends ListActivity implements OnItemClickListener,OnItemLongClickListener,OnClickListener{		private final static String TAG="AccountActivity";	private DataHelper dataHelper;	private MyWeiboSync weibo;	private List<UserInfo> userList;	private ListView listView;	private ImageView user_default_headicon;	private LinearLayout account_add_btn_bar;	private UserInfo currentUser;	private UserAdapater adapater;		@Override	protected void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.account);				setUpViews();//设置view		setUpListeners();//设置listenter				registerReceiver(broadcastReceiver, new IntentFilter("com.weibo.caigang.getverifier"));//注册拿到验证码广播接收器.				dataHelper = DataBaseContext.getInstance(getApplicationContext());//获取数据库连接类，用了单例，保证全局只有一个此对象。		userList = dataHelper.GetUserList(false);				SharedPreferences preferences = getSharedPreferences("default_user",Activity.MODE_PRIVATE);		String nick = preferences.getString("user_default_nick", "");//取得微博默认登录账号信息				UserInfo user = null;				if(userList!=null&&userList.size()>0){			if (nick != "") {				user = dataHelper.getUserByName(nick,userList);//取得微博默认登录账号信息			}			if(user == null) {				user = userList.get(0);			}		}		if(user!=null){			user_default_headicon.setImageDrawable(user.getUserIcon());		}				if(userList!=null&&userList.size()>0){			adapater = new UserAdapater();			listView.setAdapter(adapater);			listView.setOnItemClickListener(this);		}	}		private void setUpViews(){		listView = getListView();		user_default_headicon = (ImageView)findViewById(R.id.user_default_headicon);		account_add_btn_bar = (LinearLayout)findViewById(R.id.account_add_btn_bar);	}		private void setUpListeners(){		user_default_headicon.setOnClickListener(this);		account_add_btn_bar.setOnClickListener(this);		listView.setOnItemLongClickListener(this);	}				public class UserAdapater extends BaseAdapter{        @Override        public int getCount() {            return userList.size();        }        @Override        public Object getItem(int position) {            return userList.get(position);        }        @Override        public long getItemId(int position) {            return position;        }		@Override		public View getView(int position, View convertView, ViewGroup parent) {			convertView = LayoutInflater.from(getApplicationContext()).inflate(R.layout.account_list_item, null);			ImageView user_headicon = (ImageView) convertView.findViewById(R.id.user_headicon);			TextView user_nick = (TextView) convertView.findViewById(R.id.user_nick);			TextView user_name = (TextView) convertView.findViewById(R.id.user_name);			UserInfo user = userList.get(position);			try {				user_headicon.setImageDrawable(user.getUserIcon());				user_nick.setText(user.getUserName());				user_name.setText("@"+user.getUserId());			} catch (Exception e) {				e.printStackTrace();			}			return convertView;		}	}	@Override	public void onItemClick(AdapterView<?> arg0, View arg1, int position, long arg3) {		currentUser = userList.get(position);		user_default_headicon.setImageDrawable(currentUser.getUserIcon());	}	@Override	public void onClick(View v) {		switch (v.getId()) {		case R.id.account_add_btn_bar: {			weibo = WeiboContext.getInstance();//单例，保证整个应用只有一个weibo对象			weibo.getRequestToken();			Intent intent = new Intent(AccountActivity.this,AuthorizeActivity.class);			Bundle bundle = new Bundle();			bundle.putString("url", weibo.getAuthorizeUrl());			intent.putExtras(bundle);			startActivity(intent);//跳转到腾讯的微博授权页面,使用webview来显示		}			break;		case R.id.user_default_headicon: {			SharedPreferences preferences = getSharedPreferences("default_user", Activity.MODE_PRIVATE);			SharedPreferences.Editor editor = preferences.edit();			editor.putString("user_default_nick", currentUser.getUserName());			editor.putString("user_default_name", currentUser.getUserId());			editor.commit();			Intent intent = new Intent(AccountActivity.this, MainActivity.class);			startActivity(intent);		}			break;		default:			break;		}	}		BroadcastReceiver broadcastReceiver = new BroadcastReceiver() {		@Override		public void onReceive(Context context, Intent intent) {			if(intent.getAction().equals("com.weibo.caigang.getverifier")){				weibo = WeiboContext.getInstance();				Bundle bundle = intent.getExtras();				String veryfier = bundle.getString("veryfier");//获取从授权页面返回的veryfier				if(veryfier!=null){					//unregisterReceiver(broadcastReceiver);					weibo.getAccessToken(weibo.getTokenKey(), weibo.getTokenSecrect(), veryfier);//取得key和secret,这个key和secret非常重要，调腾讯的API全靠它了，神马新浪的，人人网的都一样的，不过还是有点区别，腾讯的OAuth认证是基于1.0的					String userInfo = weibo.getUserInfo(weibo.getAccessTokenKey(), weibo.getAccessTokenSecrect());					try {						JSONObject data = new JSONObject(userInfo).getJSONObject("data");						String headUrl = null;						if(data.getString("head")!=null&&!"".equals(data.getString("head"))){							headUrl = data.getString("head")+"/100";						}						String userId = data.getString("name");						String userName = data.getString("nick");												UserInfo user = new UserInfo();//生成一个user对象保存到数据库						user.setUserId(userId);						user.setUserName(userName);						user.setToken(weibo.getAccessTokenKey());						user.setTokenSecret(weibo.getAccessTokenSecrect());												Long insertId = 0L;												if (dataHelper.HaveUserInfo(userId)){//数据库已经存在了次用户							dataHelper.UpdateUserInfo(userName, ImageUtil.getRoundBitmapFromUrl(headUrl, 15), userId);							//Toast.makeText(AccountActivity.this, "此用户已存在,如果你用户名或者头像已经改变，那么此操作将同步更新!", Toast.LENGTH_LONG).show();						}else{							if(headUrl!=null){								insertId = dataHelper.SaveUserInfo(user,ImageUtil.getBytesFromUrl(headUrl));							}else{								insertId = dataHelper.SaveUserInfo(user,null);							}						}						if(insertId>0L){							//Toast.makeText(AccountActivity.this, "已经授权成功,将跳转到选择默认的登录用户界面!", Toast.LENGTH_LONG).show();						}						Log.d(TAG+"插入数据库的id是", insertId.toString());												userList = dataHelper.GetUserList(false);						adapater = new UserAdapater();						adapater.notifyDataSetChanged();//刷新listview						listView.setAdapter(adapater);											} catch (JSONException e) {						e.printStackTrace();					} catch (Exception e) {						e.printStackTrace();					}					Log.e(TAG, userInfo);				}				Log.e(TAG, veryfier);			}		}	};	@Override	public boolean onItemLongClick(AdapterView<?> arg0, View arg1, final int position,			long arg3) {		CharSequence [] items = null;		items= new CharSequence[]{"删除账号","取消"};		new AlertDialog.Builder(AccountActivity.this).setTitle("选项").setItems(items,new DialogInterface.OnClickListener() {			@Override			public void onClick(DialogInterface dialog, int which) {						switch (which) {						case 0: {							String userId = userList.get(position).getUserId();							dataHelper.DelUserInfo(userId);//删除数据库记录							SharedPreferences preferences = getSharedPreferences("default_user", Activity.MODE_PRIVATE);							SharedPreferences.Editor editor = preferences.edit();							if(preferences.getString("user_default_name", "").equals(userId)){								editor.putString("user_default_nick", "");								editor.putString("user_default_name", "");								editor.commit();//清除里面保存的记录SharedPreferences							}							userList = dataHelper.GetUserList(false);							adapater = new UserAdapater();							adapater.notifyDataSetChanged();//刷新listview							listView.setAdapter(adapater);						}							break;						case 1: {						}							break;						default:							break;						}			}		}).show();		return false;	}}

public class AuthorizeActivity extends Activity {	private static final String TAG = "AuthorizeActivity";	@Override	public void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.webview);		WebView webView = (WebView) findViewById(R.id.web);		webView.setWebViewClient(new MyWebViewClient());		Intent intent = this.getIntent();		if (!intent.equals(null)) {			Bundle bundle = intent.getExtras();			if (bundle != null) {				if (bundle.containsKey("url")) {					String url = bundle.getString("url");					WebSettings webSettings = webView.getSettings();					webSettings.setJavaScriptEnabled(true);					webSettings.setSupportZoom(true);					webView.requestFocus();					webView.loadUrl(url);				}			}		}	}	@Override	public boolean onKeyDown(int keyCode, KeyEvent event) {		if (keyCode == KeyEvent.KEYCODE_BACK) {			WebView webView = (WebView) findViewById(R.id.web);			if (webView.canGoBack()) {				webView.goBack();				return true;			}		}		return super.onKeyDown(keyCode, event);	}	public class MyWebViewClient extends WebViewClient {		@Override		public boolean shouldOverrideUrlLoading(WebView view, String url) {			view.loadUrl(url);			return true;		}		@Override		public void onPageStarted(WebView view, String url, Bitmap favicon) {			Pattern p = Pattern.compile("^" + MyWeiboSync.CALLBACK_URL					+ ".*oauth_verifier=(\\d+)");			Matcher m = p.matcher(url);			if (m.find()) {				Intent intent = new Intent();				intent.setAction("com.weibo.caigang.getverifier");				String veryfier = m.group(1);				intent.putExtra("veryfier", veryfier);				sendBroadcast(intent);				finish();			}		}	}}

<?xml version="1.0" encoding="utf-8"?><RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:background="#b8c0c8" android:layout_width="fill_parent" android:layout_height="fill_parent">	<RelativeLayout android:id="@+id/account_top" android:background="@drawable/header" android:layout_width="fill_parent" android:layout_height="wrap_content">	    <TextView android:textSize="22.0sp" android:text="账号管理" android:textColor="#ffffffff" android:ellipsize="middle" android:gravity="center_horizontal" android:id="@+id/account_title" android:layout_width="wrap_content" android:layout_height="wrap_content" android:singleLine="true"  android:layout_centerInParent="true" android:layout_alignWithParentIfMissing="true" />	</RelativeLayout>		<ListView android:id="@id/android:list"  android:background="@drawable/panel_bg" android:layout_marginTop="20.0dip" android:layout_marginLeft="10.0dip" android:layout_marginRight="10.0dip" android:padding="5.0dip" android:layout_below="@id/account_top" android:layout_width="fill_parent" android:cacheColorHint="#00000000"		android:layout_height="wrap_content" android:layout_weight="1" android:divider="@drawable/list_divider"/>			<RelativeLayout android:id="@+id/account_bottom" android:layout_width="fill_parent" android:layout_height="40.0dip" android:gravity="center" android:layout_alignParentBottom="true">		<Button android:id="@+id/account_back_btn" android:layout_width="40.0dip" android:drawableTop="@drawable/btn_back_selector" android:background="@drawable/bottom_back_bg"			android:layout_height="40.0dip"  android:layout_alignParentLeft="true"/>		<Button android:id="@+id/account_tohome_btn" android:layout_width="40.0dip"			android:layout_height="40.0dip" android:drawableTop="@drawable/btn_home_selector" android:background="@drawable/bottom_home_bg" android:layout_alignParentRight="true"/>		<LinearLayout android:layout_marginLeft="35.0dip" android:layout_toRightOf="@id/account_back_btn" android:layout_toLeftOf="@id/account_tohome_btn" android:layout_centerInParent="true" android:orientation="horizontal" android:id="@+id/account_add_btn_bar" android:layout_width="fill_parent" android:layout_height="fill_parent">				<TextView android:textSize="16.0dip" android:text="添加账号" android:textColor="@color/bottom_button_text_selector" android:gravity="center" android:background="@drawable/account_add_btn_selector" android:focusable="true" android:layout_width="wrap_content" android:layout_height="wrap_content" />		</LinearLayout>		</RelativeLayout>		<RelativeLayout android:layout_width="fill_parent" android:layout_height="wrap_content" android:gravity="center" android:layout_above="@id/account_bottom" android:layout_marginBottom="40.0dip">		<ImageView 	android:id="@+id/user_default_headicon" android:layout_width="120.0dip" android:layout_height="78.0dip"/>	</RelativeLayout>	</RelativeLayout>

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:paddingTop="3.0dip" android:orientation="horizontal" android:background="@drawable/listitem_selector"  android:layout_width="fill_parent" android:layout_height="wrap_content">	<RelativeLayout android:layout_width="50.0dip" android:layout_height="50.0dip" android:layout_weight="0.0">		<ImageView android:id="@+id/user_headicon" android:layout_width="45.0dip" android:layout_height="45.0dip" android:scaleType="fitCenter" android:layout_centerInParent="true" />	</RelativeLayout>	<RelativeLayout android:orientation="vertical" android:layout_width="wrap_content" android:layout_height="wrap_content" android:padding="4.0dip" android:layout_weight="1.0">		<TextView android:id="@+id/user_nick" android:textColor="#000000" android:layout_width="wrap_content" android:layout_height="32.0dip" android:textSize="14.0sp" android:layout_alignParentLeft="true"/>		<TextView android:id="@+id/user_name" android:layout_marginLeft="6.0dip" android:layout_below="@id/user_nick" android:textColor="#ff000000" android:layout_width="wrap_content" android:layout_height="32.0dip" android:textSize="8.0sp" android:layout_alignParentLeft="true"/>	</RelativeLayout></LinearLayout>

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http://helloandroid.iteye.com/blog/1130981