今天下了个新浪微博的API研究研究，目前实现了发布微博功能，包括带图片的微博。为了安全，新浪微博的API中并没有提供用微博帐号密码登录的功能，而是采用OAuth授权，用户通过浏览器访问新浪网站登录，登录成功后，浏览器再返回key和secret给程序。

main.xml:

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent"> <Button android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/login" android:text="登录" /> <EditText android:id="@+id/status" android:layout_width="fill_parent" android:layout_height="300sp" android:hint="输入微博消息" /> <Button android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/send" android:text="发布" /></LinearLayout>

一个登录按钮，一个输入框，一个发布按钮
因为要接收浏览器返回的数据，所以，AndroidManifest.xml注册Activity的时候要加个Intent-Filter

<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.pocketdigi.weibo" android:versionCode="1" android:versionName="1.0"> <uses-sdk android:minSdkVersion="7" /> <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:name=".Main" android:label="@string/app_name"> <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="sina" android:host="weibo" /> <!-- 监控sina://weibo这样的地址 --> </intent-filter> </activity> </application> <uses-permission android:name="android.permission.INTERNET"></uses-permission></manifest>

intent-filter必须分成两段写，如果合在一起写，就启动不了了。
为了简便，直接把新浪Sample里的OAuthConstant类拷过来：

package weibo4android.androidexamples; import weibo4android.Weibo;import weibo4android.http.AccessToken;import weibo4android.http.RequestToken; public class OAuthConstant { private static Weibo weibo=null; private static OAuthConstant instance=null; private RequestToken requestToken; private AccessToken accessToken; private String token; private String tokenSecret; private OAuthConstant(){}; public static synchronized OAuthConstant getInstance(){ if(instance==null) instance= new OAuthConstant(); return instance; } public Weibo getWeibo(){ if(weibo==null) weibo= new Weibo(); return weibo; } public AccessToken getAccessToken() { return accessToken; } public void setAccessToken(AccessToken accessToken) { this.accessToken = accessToken; this.token=accessToken.getToken(); this.tokenSecret=accessToken.getTokenSecret(); } public RequestToken getRequestToken() { return requestToken; } public void setRequestToken(RequestToken requestToken) { this.requestToken = requestToken; } public String getToken() { return token; } public void setToken(String token) { this.token = token; } public String getTokenSecret() { return tokenSecret; } public void setTokenSecret(String tokenSecret) { this.tokenSecret = tokenSecret; } }

接下来就是最关键的主程序：

package com.pocketdigi.weibo; import java.io.File; import weibo4android.Weibo;import weibo4android.WeiboException;import weibo4android.http.AccessToken;import weibo4android.http.RequestToken;import android.app.Activity;import android.content.Intent;import android.content.SharedPreferences;import android.content.SharedPreferences.Editor;import android.net.Uri;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditText;import android.widget.Toast; public class Main extends Activity { /** Called when the activity is first created. */ String key = "", secret = ""; Button login,send; EditText status; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); System.setProperty("weibo4j.oauth.consumerKey", "3997936609"); System.setProperty("weibo4j.oauth.consumerSecret", "8bc9e3bfd6ae8e3b2b8bda9079918950"); //设置在新浪应用开放平台申请的应用的key和secret login=(Button)findViewById(R.id.login); send=(Button)findViewById(R.id.send); status=(EditText)findViewById(R.id.status); login.setOnClickListener(new OnClickListener(){ @Override public void onClick(View v) { // TODO Auto-generated method stub login(); //登录 }}); send.setOnClickListener(new OnClickListener(){ @Override public void onClick(View v) { // TODO Auto-generated method stub String text=String.valueOf(status.getText()); Weibo weibo = new Weibo(); weibo.setToken(key,secret); try { //weibo.updateStatus(text); //只发文字 File f=new File("/sdcard/wallpaper/129567208597069400.jpg"); weibo.uploadStatus(text,f ); //发文字+图片，这里需要导入commons-httpclient-3.0.1.jar，自己网上下 //在实际项目上，最好放Thread里，因为按下去的时候按钮会卡 } catch (WeiboException e) { // TODO Auto-generated catch block e.printStackTrace(); } }}); } @Override protected void onStart() { // TODO Auto-generated method stub super.onStart(); //启动时执行检测是否来自网页登录返回 //如果是，获取key和secret //否则读取SharedPreferences //若得不到key和secret，直接跳转登录 Uri uri = this.getIntent().getData(); if (uri != null) { //如果是浏览器返回 try { RequestToken requestToken = OAuthConstant.getInstance() .getRequestToken(); AccessToken accessToken = requestToken.getAccessToken(uri .getQueryParameter("oauth_verifier")); OAuthConstant.getInstance().setAccessToken(accessToken); // 保存 Editor sharedata = getSharedPreferences("WeiBo", 0).edit(); sharedata.putString("key", accessToken.getToken()); sharedata.putString("secret", accessToken.getTokenSecret()); sharedata.commit(); key = accessToken.getToken(); secret = accessToken.getTokenSecret(); } catch (WeiboException e) { e.printStackTrace(); } } else { //如果是用户自己启动 SharedPreferences settings = getSharedPreferences("WeiBo", 0); key = settings.getString("key", ""); secret = settings.getString("secret", ""); } if (key.equals("") || secret.equals("")) { Toast.makeText(this, "尚未登录", Toast.LENGTH_LONG).show(); login(); //跳转到浏览器登录 } } public void login(){ Weibo weibo = OAuthConstant.getInstance().getWeibo(); RequestToken requestToken; try { requestToken =weibo.getOAuthRequestToken("sina://weibo"); //为了避免与同类应用冲突，还是自己改下URI吧 Uri uri2 = Uri.parse(requestToken.getAuthenticationURL()+ "&from=xweibo"); OAuthConstant.getInstance().setRequestToken(requestToken); startActivity(new Intent(Intent.ACTION_VIEW, uri2)); } catch (WeiboException e) { e.printStackTrace(); } }}

发图片需要导入commons-httpclient-3.0.1.jar，否则启动报错，当然weibo4android-1.2.0.jar是不可少的