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:
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<?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>
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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
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<?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>
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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：
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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;
}
}
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接下来就是最关键的主程序：
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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();
}
}
}
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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