原生微信登录开发记录

原生微信登录开发记录（微信开发文档太陈旧了不更新）

微信回调页面

public class WXEntryActivity extends Activity implements IWXAPIEventHandler {
private static final String TAG = “WXEntryActivity”;
private static final int RETURN_MSG_TYPE_LOGIN = 1; ///< 登录
private static final int RETURN_MSG_TYPE_SHARE = 2; ///< 分享
private IWXAPI api;

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {super.onCreate(savedInstanceState);///< 这句没有写,是不能执行回调的方法的api = WXAPIFactory.createWXAPI(this, Constants.WeChat_APP_ID, false);api.handleIntent(getIntent(), this);
}@Override
public void onReq(BaseReq baseReq) {Log.e(TAG, "onReq" + baseReq.getType());
}@Override
public void onResp(BaseResp baseResp) {Log.e(TAG, "onResp:------>");Log.e(TAG, "error_code:---->" + baseResp.errCode);int type = baseResp.getType(); //类型：分享还是登录switch (baseResp.errCode) {case BaseResp.ErrCode.ERR_AUTH_DENIED:///< 用户拒绝授权finish();case BaseResp.ErrCode.ERR_USER_CANCEL:///< 用户取消String message = "";if (type == RETURN_MSG_TYPE_LOGIN) {message = "取消了微信登录";} else if (type == RETURN_MSG_TYPE_SHARE) {message = "取消了微信分享";}finish();break;case BaseResp.ErrCode.ERR_OK:if (type == RETURN_MSG_TYPE_LOGIN) {///< 用户换取access_token的code，仅在ErrCode为0时有效String code = ((SendAuth.Resp) baseResp).code;String stata = ((SendAuth.Resp) baseResp).state;///< 这里拿到了这个code，去做2次网络请求获取access_token和用户个人信息getAccessToken(code, stata);} else if (type == RETURN_MSG_TYPE_SHARE) {///< "微信分享成功"finish();}break;}
}/*** @param code 根据code再去获取AccessToken*/
private void getAccessToken(String code, String state) {//        String url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid=APPID&secret=SECRET&code=CODE&grant_type=authorization_code";String url = "https://api.weixin.qq.com/sns/oauth2/access_token";OkHttpClient mOkHttpClient = new OkHttpClient();///< Post方式也可以...//        RequestBody body = new FormBody.Builder()//                .add("appid", "替换为你的appid")//                .add("secret", "替换为你的app密钥")//                .add("code", code)//                .add("grant_type", "authorization_code")//                .build();url += "?appid=" + Constants.WeChat_APP_ID + "&secret=f886493b0656ae8125e1edc5df6e01d6"+ "&code=" + code + "&grant_type=authorization_code";final Request request = new Request.Builder().url(url)//.post(body).build();Call call = mOkHttpClient.newCall(request);call.enqueue(new Callback() {@Overridepublic void onFailure(Call call, IOException e) {finish();}@Overridepublic void onResponse(Call call, Response response) throws IOException {String json = response.body().string();AccessToken accessToken = JSONObject.parseObject(json, new TypeReference<AccessToken>() {});getUserInfo(accessToken.getAccess_token(), accessToken.getOpenid(), state);}});
}/*** @param access_token 根据access_token再去获取UserInfo*/
private void getUserInfo(String access_token, String openid, String state) {//        String url = "https://api.weixin.qq.com/sns/userinfo?access_token=ACCESS_TOKEN&openid=OPENID";String url = "https://api.weixin.qq.com/sns/userinfo";OkHttpClient mOkHttpClient = new OkHttpClient();RequestBody body = new FormBody.Builder().add("access_token", access_token).add("openid", openid).build();final Request request = new Request.Builder().url(url).post(body).build();Call call = mOkHttpClient.newCall(request);call.enqueue(new Callback() {@Overridepublic void onFailure(Call call, IOException e) {finish();}@Overridepublic void onResponse(Call call, Response response) throws IOException {String json = response.body().string();WXUserInfo wxUserInfo = JSONObject.parseObject(json, new TypeReference<WXUserInfo>() {});//加绑和登陆的区分（这里用state字段来区分代码里不同地方调用微信登录）if (state.equals("jiabang")) {//      jiabangcheckType(2, wxUserInfo.getOpenid());  我自己项目里的业务处理} else {//     checkType(2, wxUserInfo.getOpenid()); 我自己项目里的业务处理}///< 发送广播到登录界面，把数据带过去; 可用EventBusfinish();}});
}

}

调起微信登录

private IWXAPI api;
api = WXAPIFactory.createWXAPI(this, “你自己的微信id”, true);
api.registerApp(“你自己的微信id”);

final SendAuth.Req req = new SendAuth.Req();
req.scope = “snsapi_userinfo,snsapi_friend,snsapi_message,snsapi_contact”;
req.state = “none”;
api.sendReq(req);

实体类

AccessToken.java
package com.xxxxxx.app.bean;

import com.xxxxxx.app.anotation.NotProguard;

@NotProguard
public class AccessToken {

/*** access_token : xxxx* expires_in : xxxx* refresh_token : xxxxx* openid : xxxxx* scope : xxxxx* unionid : xxxxx*/private String access_token;
private int expires_in;
private String refresh_token;
private String openid;
private String scope;
private String unionid;private AccessToken(){}
public String getAccess_token() {return access_token;
}public void setAccess_token(String access_token) {this.access_token = access_token;
}public int getExpires_in() {return expires_in;
}public void setExpires_in(int expires_in) {this.expires_in = expires_in;
}public String getRefresh_token() {return refresh_token;
}public void setRefresh_token(String refresh_token) {this.refresh_token = refresh_token;
}public String getOpenid() {return openid;
}public void setOpenid(String openid) {this.openid = openid;
}public String getScope() {return scope;
}public void setScope(String scope) {this.scope = scope;
}public String getUnionid() {return unionid;
}public void setUnionid(String unionid) {this.unionid = unionid;
}

}

WXUserInfo.java

package com.xxxxxx.app.bean;

import com.xxxxxx.app.anotation.NotProguard;

@NotProguard
public class WXUserInfo {

/*** openid : xxxxxxx* nickname : xxxxxxx* sex : 1* language : zh_CN* city : Chengdu* province : Sichuan* country : CN* headimgurl :xxxxxx* privilege : []* unionid : xxxxxxx*/private String openid;
private String nickname;
private int sex;
private String language;
private String city;
private String province;
private String country;
private String headimgurl;
private String unionid;private WXUserInfo(){}
public String getOpenid() {return openid;
}public void setOpenid(String openid) {this.openid = openid;
}public String getNickname() {return nickname;
}public void setNickname(String nickname) {this.nickname = nickname;
}public int getSex() {return sex;
}public void setSex(int sex) {this.sex = sex;
}public String getLanguage() {return language;
}public void setLanguage(String language) {this.language = language;
}public String getCity() {return city;
}public void setCity(String city) {this.city = city;
}public String getProvince() {return province;
}public void setProvince(String province) {this.province = province;
}public String getCountry() {return country;
}public void setCountry(String country) {this.country = country;
}public String getHeadimgurl() {return headimgurl;
}public void setHeadimgurl(String headimgurl) {this.headimgurl = headimgurl;
}public String getUnionid() {return unionid;
}public void setUnionid(String unionid) {this.unionid = unionid;
}

}
引用的库:

compile 'com.alibaba:fastjson:1.1.68.android'

结束

就一个掉起和回调。写这篇文章纯属因为微信文档陈旧看的蛋疼、