? ???? Android?? ??? ?? ??? ??? ???? ??? ?????. ?? ??? ??? ?? ??? ????? ? ?? ??? ??? ???. ??? ??. ?? ?? ?? ??? ??? ???????.

1. ?? ??????? onCreate? ??:

// GeneralAppliction.java
public static IWXAPI sApi;
@Override
public void onCreate() {
 super.onCreate();
 sApi = WXEntryActivity.initWeiXin(this, AppConst.WEIXIN_APP_ID);
}

2. ??:

// MainActivity.java
WXEntryActivity.loginWeixin(MainActivity.this, GeneralAppliction.sApi);

3 , ???? ?? ??? ??? ????. ??? ??? ???? ????.

?? ??:

1. ?? ????? ?????? ?? ? ??, ??? ?? ??

2 .sdk? ?????? ?? ?? ? ???? ????

? ?????. 3. WeChat ?? ??? ???? ??????

4. ????? ??? ???? ??? ?????

5. ??? ?? ?? ?? ???? access_token

6. 5???? access_token? ???? ????? ??

7. access_token? ???? ???? ?? ?? Refresh_token? ???? ?? ?? it

8. access_token? ??? ??? ?? ??

1. ?? ???? ??????? ?? ? ???? ??? ??? ?????

??? ??? ??? ??? ????. ??? ??? WeChat ?? ???? ??? ??? ?? ??? ?? ??? ????.

??? ?? ??? ?????

??? ??? ??? ??? ?????. ???? key? md5? ?????. Android ?? ??

2. ??? ???? ?????

?? ?? ??(SDK) ????: WeChat ??, ???, ??, ?? ? ?? ??? ???? ? ??? ????? ? ??

Example Demo

???? ? libammsdk.jar ??? AS ????? libs ????? ????, example Demo? ?? ?? ???? ?? wxapi ???? ??? ?? ???? ?????. ???? ????? src ??:

wxapi ??? ??? ??? ??? ???? ? ??? WeChat SDK?? ???? ?? ? ????. ?? ?? ??. ?? ?? Manifest.xml:

<activity 
 android:name=".wxapi.WXEntryActivity" 
 android:theme="@android:style/Theme.Translucent.NoTitleBar"
 android:configChanges="keyboardHidden|orientation|screenSize"
 android:exported="true"
 android:screenOrientation="portrait" />

? ?????. 3. WeChat ?? ??? ????? ??????.

?? ??????? onCreate?? WeChat ?? ??? ????? ??????(?? WeChat API ??? ???? ?? Activity? onCreate? ?????. ??? ??? ?? ?????):

@Override
public void onCreate() { 
 super.onCreate();
 // 初始化微信組件
 initWeiXin();
}

public static IWXAPI sApi;
private void initWeiXin() {
 sApi = WXEntryActivity.initWeiXin(this, AppConst.WEIXIN_APP_ID);
}

4. ????? ??? ???? ??? ?????

??? ????? ?? ??? ?? WeChat All are packaged in the wxapi package and WXEntryActivity:

// 實現(xiàn)IWXAPIEventHandler 接口，以便于微信事件處理的回調(diào)
public class WXEntryActivity extends Activity implements IWXAPIEventHandler {

 private static final String WEIXIN_ACCESS_TOKEN_KEY = "wx_access_token_key";
 private static final String WEIXIN_OPENID_KEY = "wx_openid_key";
 private static final String WEIXIN_REFRESH_TOKEN_KEY = "wx_refresh_token_key";

 private Gson mGson;
 @Override
 public void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 // 微信事件回調(diào)接口注冊
 GeneralAppliction.sApi.handleIntent(getIntent(), this);
 mGson = new Gson();
 }

 /**
 * 微信組件注冊初始化
 * @param context 上下文
 * @param weixin_app_id appid
 * @return 微信組件api對象
 *
 /
 public static IWXAPI initWeiXin(Context context, @NonNull String weixin_app_id) {
 if (TextUtils.isEmpty(weixin_app_id)) {
 Toast.makeText(context.getApplicationContext(), "app_id 不能為空", Toast.LENGTH_SHORT).show();
 }
 IWXAPI api = WXAPIFactory.createWXAPI(context, weixin_app_id, true);
 api.registerApp(weixin_app_id);
 return api;
 }

 /** 
 * 登錄微信 
 * 
 * @param api 微信服務api 
 */
 public static void loginWeixin(Context context, IWXAPI api) {
 // 判斷是否安裝了微信客戶端 
 if (!api.isWXAppInstalled()) { 
 Toast.makeText(context.getApplicationContext(), "您還未安裝微信客戶端！", Toast.LENGTH_SHORT).show(); 
 return; 
 }
 // 發(fā)送授權(quán)登錄信息，來獲取code
 SendAuth.Req req = new SendAuth.Req(); 
 // 應用的作用域，獲取個人信息
 req.scope = "snsapi_userinfo"; 
 /** 
 * 用于保持請求和回調(diào)的狀態(tài)，授權(quán)請求后原樣帶回給第三方
 * 為了防止csrf攻擊（跨站請求偽造攻擊），后期改為隨機數(shù)加session來校驗 
 */ 
 req.state = "app_wechat";
 api.sendReq(req);
 }

 // 微信發(fā)送請求到第三方應用時，會回調(diào)到該方法
 @Override
 public void onReq(BaseReq req) { 
 switch (req.getType()) { 
 case ConstantsAPI.COMMAND_GETMESSAGE_FROM_WX: 
 break; 
 case ConstantsAPI.COMMAND_SHOWMESSAGE_FROM_WX:
 break; 
 default: 
 break; 
 }
 }
 // 第三方應用發(fā)送到微信的請求處理后的響應結(jié)果，會回調(diào)到該方法
 @Override
 public void onResp(BaseResp resp) {
 switch (resp.errCode) { 
 // 發(fā)送成功 
 case BaseResp.ErrCode.ERR_OK:
 // 獲取code
 String code = ((SendAuth.Resp) resp).code;
 // 通過code獲取授權(quán)口令access_token
 getAccessToken(code);
 break;
 }
 }
}

?? ??? ?? ?? ?? ??:

???. ?3?? access_token? ?? ?? ??? ???? ???. ??? ?? ??? 10???, ? ?? ???? ? ????. ??? ??? ???. ??? ?? ? ??? ??? WeChat ?? ???? ??? ?????. ?3?? https ? ?? ????? ???? ?? ??? ???? ??? ?? ??? ? ????.

?? ???? ?????? ? ??? ?? ?????.

WXEntryActivity.loginWeixin(MainActivity.this, GeneralAppliction.sApi);

5. ?? ??? ?? ?? ???? access_token

onResp ?? ????? ??? ?? ? ?? ??? ?? ?? ???? access_token? ?????.

/** 
* 獲取授權(quán)口令 
*/
private void getAccessToken(String code) { 
 String url = "https://api.weixin.qq.com/sns/oauth2/access_token?" +
 "appid=" + AppConst.WEIXIN_APP_ID +
 "&secret=" + AppConst.WEIXIN_APP_SECRET +
 "&code=" + code +
 "&grant_type=authorization_code"; 
 // 網(wǎng)絡請求獲取access_token 
 httpRequest(url, new ApiCallback<String>() { 
 @Override 
 public void onSuccess(String response) { 
 Logger.e(response); 
 // 判斷是否獲取成功，成功則去獲取用戶信息，否則提示失敗 
 processGetAccessTokenResult(response); 
 } 
 @Override 
 public void onError(int errorCode, final String errorMsg) {
 Logger.e(errorMsg); 
 showMessage("錯誤信息: " + errorMsg); 
 } 
 @Override 
 public void onFailure(IOException e) {
 Logger.e(e.getMessage()); 
 showMessage("登錄失敗"); 
 } 
 });
}

/** 
* 處理獲取的授權(quán)信息結(jié)果 
* @param response 授權(quán)信息結(jié)果 
*/
private void processGetAccessTokenResult(String response) { 
 // 驗證獲取授權(quán)口令返回的信息是否成功
 if (validateSuccess(response)) {
 // 使用Gson解析返回的授權(quán)口令信息 
 WXAccessTokenInfo tokenInfo = mGson.fromJson(response, WXAccessTokenInfo.class);
 Logger.e(tokenInfo.toString());
 // 保存信息到手機本地
 saveAccessInfotoLocation(tokenInfo);
 // 獲取用戶信息 
 getUserInfo(tokenInfo.getAccess_token(), tokenInfo.getOpenid()); 
 } else {
 // 授權(quán)口令獲取失敗，解析返回錯誤信息 
 WXErrorInfo wxErrorInfo = mGson.fromJson(response, WXErrorInfo.class); 
 Logger.e(wxErrorInfo.toString()); 
 // 提示錯誤信息
 showMessage("錯誤信息: " + wxErrorInfo.getErrmsg()); 
 }
}

/** 
* 驗證是否成功 
* 
* @param response 返回消息 
* @return 是否成功 
*/
private boolean validateSuccess(String response) { 
 String errFlag = "errmsg"; 
 return (errFlag.contains(response) && !"ok".equals(response)) 
 || (!"errcode".contains(response) && !errFlag.contains(response));
}

6. 5???? access_token? ???? ????? ??

在回調(diào)的onResp方法中獲取code后，處理access_token是否登錄過或者過期的問題：

// 從手機本地獲取存儲的授權(quán)口令信息，判斷是否存在access_token，不存在請求獲取，存在就判斷是否過期
String accessToken = (String) ShareUtils.getValue(this, WEIXIN_ACCESS_TOKEN_KEY, "none");
String openid = (String) ShareUtils.getValue(this, WEIXIN_OPENID_KEY, "");
if (!"none".equals(accessToken)) {
 // 有access_token，判斷是否過期有效
 isExpireAccessToken(accessToken, openid);
} else {
 // 沒有access_token
 getAccessToken(code);
}

判斷授權(quán)口令是否有效：

/** 
* 判斷accesstoken是過期 
* @param accessToken token 
* @param openid 授權(quán)用戶唯一標識 
*/
private void isExpireAccessToken(final String accessToken, final String openid) {
 String url = "https://api.weixin.qq.com/sns/auth?" + 
 "access_token=" + accessToken + 
 "&openid=" + openid;
 httpRequest(url, new ApiCallback<String>() {
 @Override
 public void onSuccess(String response) {
 Logger.e(response);
 if (validateSuccess(response)) {
 // accessToken沒有過期，獲取用戶信息
 getUserInfo(accessToken, openid);
 } else {
 // 過期了，使用refresh_token來刷新accesstoken
 refreshAccessToken();
 }
 }
 @Override
 public void onError(int errorCode, final String errorMsg) {
 Logger.e(errorMsg);
 showMessage("錯誤信息: " + errorMsg);
 }
 @Override
 public void onFailure(IOException e) {
 Logger.e(e.getMessage());
 showMessage("登錄失敗");
 }
 });
}

7. 如果access_token過期無效，就用refresh_token來刷新

/**
 * 刷新獲取新的access_token
 *
/
private void refreshAccessToken() {
 // 從本地獲取以存儲的refresh_token
 final String refreshToken = (String) ShareUtils.getValue(this, WEIXIN_REFRESH_TOKEN_KEY, "");
 if (TextUtils.isEmpty(refreshToken)) {
 return;
 }
 // 拼裝刷新access_token的url請求地址
 String url = "https://api.weixin.qq.com/sns/oauth2/refresh_token?" +
 "appid=" + AppConst.WEIXIN_APP_ID +
 "&grant_type=refresh_token" +
 "&refresh_token=" + refreshToken;
 // 請求執(zhí)行
 httpRequest(url, new ApiCallback<String>() {
 @Override
 public void onSuccess(String response) {
 Logger.e("refreshAccessToken: " + response);
 // 判斷是否獲取成功，成功則去獲取用戶信息，否則提示失敗
 processGetAccessTokenResult(response);
 }
 @Override
 public void onError(int errorCode, final String errorMsg) {
 Logger.e(errorMsg);
 showMessage("錯誤信息: " + errorMsg);
 // 重新請求授權(quán)
 loginWeixin(WXEntryActivity.this.getApplicationContext(), GeneralAppliction.sApi);
 }
 @Override
 public void onFailure(IOException e) {
 Logger.e(e.getMessage());
 showMessage("登錄失敗");
 // 重新請求授權(quán)
 loginWeixin(WXEntryActivity.this.getApplicationContext(), GeneralAppliction.sApi);
 }
 });
}

8. 使用access_token獲取用戶信息

/**
 * 獲取用戶信息
 *
/
private void getUserInfo(String access_token, String openid) {
 String url = "https://api.weixin.qq.com/sns/userinfo?" +
 "access_token=" + access_token +
 "&openid=" + openid;
 httpRequest(url, new ApiCallback<String>() {
 @Override
 public void onSuccess(String response) {
 // 解析獲取的用戶信息
 WXUserInfo userInfo = mGson.fromJson(response, WXUserInfo.class);
 Logger.e("用戶信息獲取結(jié)果：" + userInfo.toString()); }
 @Override
 public void onError(int errorCode, String errorMsg) {
 showMessage("錯誤信息: " + errorMsg);
 }
 @Override
 public void onFailure(IOException e) {
 showMessage("獲取用戶信息失敗");
 }
 });
}

通信部分

private OkHttpClient mHttpClient = new OkHttpClient.Builder().build();
private Handler mCallbackHandler = new Handler(Looper.getMainLooper());
/**
 * 通過Okhttp與微信通信
 * * @param url 請求地址
 * @throws Exception
 */
public void httpRequest(String url, final ApiCallback<String> callback) {
 Logger.e("url: %s", url);
 final Request request = new Request.Builder()
 .url(url)
 .get()
 .build();
 mHttpClient.newCall(request).enqueue(new Callback() {
 @Override
 public void onFailure(Call call, final IOException e) {
 if (callback != null) {
 mCallbackHandler.post(new Runnable() {
  @Override
  public void run() {
  // 請求失敗，主線程回調(diào)
  callback.onFailure(e);
  }
 });
 }
 }
 @Override
 public void onResponse(Call call, final Response response) throws IOException {
 if (callback != null) {
 if (!response.isSuccessful()) {
  mCallbackHandler.post(new Runnable() {
  @Override
  public void run() {
  // 請求出錯，主線程回調(diào)
  callback.onError(response.code(), response.message());
  }
  });
 } else {
  mCallbackHandler.post(new Runnable() {
  @Override
  public void run() {
  try {
  // 請求成功，主線程返回請求結(jié)果
  callback.onSuccess(response.body().string());
  } catch (final IOException e) {
  // 異常出錯，主線程回調(diào)
  mCallbackHandler.post(new Runnable() {
   @Override
   public void run() {
   callback.onFailure(e);
   }
  });
  }
  }
  });
 }
 }
 }
 });
}

// Api通信回調(diào)接口
public interface ApiCallback<T> {
 /**
 * 請求成功
 *
 * @param response 返回結(jié)果
 */
 void onSuccess(T response);
 /**
 * 請求出錯
 *
 * @param errorCode 錯誤碼
 * @param errorMsg 錯誤信息
 */
 void onError(int errorCode, String errorMsg);
 /**
 * 請求失敗
 */
 void onFailure(IOException e);
}

總結(jié)

集成的詳細描述就這樣，至于獲取的用戶信息，小伙伴們應該知道后續(xù)自己業(yè)務的需求，該怎么處理了。以上就是本文的全部內(nèi)容了，希望能對大家的學習或者工作帶來一定的幫助，如果有疑問大家可以留言交流。

? ??? Android? WeChat ???? ???? ??? ?? ??? ??? ? ??? ??? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!