0.申请开发者:
https://open.weixin.qq.com/cgi-bin/frame?t=home/app_tmpl&lang=zh_CN
1.下载sdk包:
2.导入sdk:这一步就不说了
3.初始化IWXAPI:
1 IWXAPI api = WXAPIFactory.createWXAPI(this, Constants.WEIXIN_APP_ID, true);
4.发送认证请求:
1 if( !api.isWXAppInstalled()){ 2 Toast.makeText(context, "请先安装微信应用", Toast.LENGTH_SHORT).show(); 3 return false; 4 } 5 if( !api.isWXAppSupportAPI() ){ 6 Toast.makeText(context, "请先更新微信应用", Toast.LENGTH_SHORT).show(); 7 return false; 8 } 9 api.registerApp(Constant.WX_APP_ID); 10 final SendAuth.Req req = new SendAuth.Req(); 11 req.scope = Constant.WX_APP_SCOPE; 12 req.state = Constant.WX_APP_STATE; 13 api.sendReq(req);
5.第4步会调起微信客户端让用户进行授权，用户进行操作后会调起***.***.***.wxapi.WXEntryActivity 这个类， ***.***.***是应用包名，这个WXEntryActivity需要继承Activity并且实现IWXAPIEventHandler接口，当然，这个WXEntryActivity也需要在清单文件中注册
1 public class WXEntryActivity extends Activity implements IWXAPIEventHandler { 2 3 private static String TAG = "WXEntryActivity"; 4 private IWXAPI api; 5 public static BaseResp mResp = null; 6 7 // 是否有新的认证请求 8 public static boolean hasNewAuth = false; 9 private TextView mTvCode; 10 11 @Override 12 protected void onCreate(Bundle savedInstanceState) { 13 super.onCreate(savedInstanceState); 14 Log.i(TAG, "onCreate<-----------------------------"); 15 mTvCode = new TextView(this); 16 mTvCode.setText("no code"); 17 setContentView(mTvCode); 18 api = WXAPIFactory.createWXAPI(this, Constant.WX_APP_ID, false); 19 api.handleIntent(getIntent(), this); 20 Log.i(TAG, "onCreate----------------------------->"); 21 22 } 23 24 @Override 25 protected void onNewIntent(Intent intent) { 26 super.onNewIntent(intent); 27 setIntent(intent); 28 api.handleIntent(intent, this); 29 finish(); 30 } 31 32 @Override 33 public void onReq(BaseReq arg0) { 34 // TODO Auto-generated method stub 35 Log.i(TAG, "onReq<------------------------------"); 36 } 37 38 /** 39 *认证后会回调该方法 40 */ 41 @Override 42 public void onResp(BaseResp resp) { 43 // TODO Auto-generated method stub 44 String code = ((SendAuth.Resp) resp).code; 45 //获取code后需要去获取access_token 46 } 47 }
获取code之后需要继续用code去获取access_token
1 //获取微信登陆Token凭证 2 Request requestToken = new Request.Builder().url(tokenRequestUrl).build(); 3 response = httpClient.newCall(requestToken).execute(); 4 String tokenResponse = response.body().string(); 5 Log.i(TAG, "tokenResponse = " + tokenResponse); 6 weChatTokenDo = JSON.parseObject(tokenResponse, WeiXinTokenDO.class); 7 8 //获取微信个人信息 9 String userInfoRequest = getUserInfoRequest(weChatTokenDo.getAccess_token(), weChatTokenDo.getOpenid()); 10 Request requestUserInfo = new Request.Builder().url(userInfoRequest).build(); 11 response = httpClient.newCall(requestUserInfo).execute(); 12 String userInfoResponse = response.body().string(); 13 Log.i(TAG, "userInfo = " + userInfoResponse); 14 String openid = JSON.parseObject (userInfoResponse).getString("openid"); 15 Log.i(TAG, "微信登陆数据获取结束"); 16
1 private static String GET_REQUEST_ACCESS_TOKEN = 2 "https://api.weixin.qq.com/sns/oauth2/access_token?appid=APPID&secret=SECRET&code=CODE&grant_type=authorization_code"; 3 4 private static String GET_REQUEST_USER_INFO = 5 "https://api.weixin.qq.com/sns/userinfo?access_token=ACCESS_TOKEN&openid=OPENID";
1 /** 2 * 获取根据CODE得到的微信授权Token的Get请求地址 3 * @param code 4 * @return 5 */ 6 private static String getTokenRequest(String code ){ 7 String tokenRequest = GET_REQUEST_ACCESS_TOKEN.replace("APPID", Constants.WEIXIN_APP_ID). 8 replace("SECRET", Constants.WEIXIN_APP_SECRET). 9 replace("CODE",code); 10 return tokenRequest; 11 }
至此，获取到的userInfoResponse字符串就是保存了用户个人信息的json串，然后里面都有什么内容可去微信官网看，自己解析操作
另外，别忘记在清单文件中注册
1 <!-- 微信登陆回调 --> 2 <activity 3 android:name"***.***.***.wxapi.WXEntryActivity" 4 android:label="@string/app_name" 5 android:exported="true"/>