安卓微信登陆

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1、单击登陆图片按钮  LoginActivity

   private IWXAPI mWeixinAPI;

   public void loginMsgChat(){
        if (mWeixinAPI == null) {
            mWeixinAPI = WXAPIFactory.createWXAPI(this, AppID, false);
        }
        if (!mWeixinAPI.isWXAppInstalled()) {
            Toast.makeText(context, "请安装微信", Toast.LENGTH_SHORT).show();
            return;
        }
        mWeixinAPI.registerApp(AppID);

        SendAuth.Req req = new SendAuth.Req();
        req.scope = "snsapi_userinfo";
        req.state =  "wechat_sdk_gushen";;
        mWeixinAPI.sendReq(req);
        
	}

2、微信客户端回调 WXEntryActivity

    WXEntryActivity extends Activity implements IWXAPIEventHandler

    private IWXAPI api;
    protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.onCreate(savedInstanceState);

		api = WXAPIFactory.createWXAPI(this, Content.MSG_APPID, false);
		api.registerApp(Content.MSG_APPID);

		api.handleIntent(getIntent(), this);
	}


    @Override
    public void onReq(BaseReq arg0) {
		// TODO Auto-generated method stub
	}

    @Override
    public void onResp(BaseResp arg0) {
		// TODO Auto-generated method stub
		int result = 0;
		switch (arg0.errCode) {
		case BaseResp.ErrCode.ERR_OK:
			result = R.string.errcode_success;
			sendAuthResp = (SendAuth.Resp) arg0;
			handler.sendEmptyMessage(2);
			break;
		case BaseResp.ErrCode.ERR_USER_CANCEL:
			result = R.string.errcode_cancel;
			break;
		case BaseResp.ErrCode.ERR_AUTH_DENIED:
			result = R.string.errcode_deny;
			break;
		default:
			result = R.string.errcode_unknown;
			break;
		}
		finish();
	}

    private Handler handler = new Handler(Looper.myLooper()) {
		public void handleMessage(Message msg) {
			switch (msg.what) {
			case 11:
				Intent intent = new Intent(WXEntryActivity.this,
						LoginActivity.class);
				HashMap<String, Object> j1 = (HashMap<String, Object>) msg.obj;
				Bundle bundle = new Bundle();
				bundle.putString("thirdid", j1.get("openid").toString());
				bundle.putString("fromConnect", "" + 3);
				bundle.putString("nameConnect", j1.get("nickname").toString());
				bundle.putString("headimgurl", j1.get("headimgurl").toString());
				intent.putExtras(bundle);
				startActivity(intent);
				break;
			case 2:
				new Thread1().start();
				break;
			case 3:
				new Thread2().start();
				break;
			default:
				break;
			}
		}
	};

    public void WeiAT() {

	     String url_constant1 = "https://api.weixin.qq.com/sns/oauth2/access_token?appid="
				+ Content.MSG_APPID
				+ "&secret="
				+ Content.MSG_AppSecret
				+ "&code="
				+ sendAuthResp.token
				+ "&grant_type=authorization_code";
    }

    public void WeiGeren() {
	     String url_constant2 = "https://api.weixin.qq.com/sns/userinfo?access_token="
				+ ACCESS_TOKEN + "&openid=" + OPENID;
             Message message = new Message();
	     message.what = 11;
	     message.obj = hm;
	     handler.sendMessage(message);
}

    @Override
	protected void onNewIntent(Intent intent) {
		// TODO Auto-generated method stub
		super.onNewIntent(intent);
		setIntent(intent);
		Bundle bundle=new Bundle();
		bundle=intent.getExtras();
		if(bundle!=null){
			String s1=bundle.getString("thirdid");
			String s2=bundle.getString("fromConnect");
			String s3=bundle.getString("nameConnect");
			photoUrl = bundle.getString("headimgurl");
			thirdPair.clear();
			thirdPair.add(new BasicNameValuePair("thirdid",s1));
			thirdPair.add(new BasicNameValuePair("fromConnect", s2));
			thirdPair.add(new BasicNameValuePair("nameConnect", s3));
			接着是第三方登录接口
		}
	}

安卓微信登陆

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原文地址：http://blog.csdn.net/xinnian25/article/details/43952117