Android端接入微信支付_安卓掉起支付接入微信支付并接受支付结果

1、接入微信SDK

implementation 'com.tencent.mm.opensdk:wechat-sdk-android-without-mta:+'
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2、从公司业务后台拿到订单信息后调用微信SDK，发起微信支付

		//orderInfo 业务后台的数据
    public void pay(Activity a, WeChatPayOrderInfo orderInfo) {
        //需要一个注册微信支付的APPID
        WXUtil.getInstance(a).getApi().registerApp("wx_appid");
        try {
            PayReq request = new PayReq();
            request.appId = LoginConfig.getAPP_ID_WX();
            request.partnerId = orderInfo.getPtn();
            request.prepayId = orderInfo.getOi();
            request.packageValue = orderInfo.getOds();
            request.nonceStr = orderInfo.getNes();
            request.timeStamp = String.valueOf(orderInfo.getTtp());
            request.sign = orderInfo.getSn();
            WXUtil.getInstance(a).getApi().sendReq(request);
        } catch (Exception e) {
            e.printStackTrace();
            Log.e("解析异常:" + e.toString());
        }
    }
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3、在包名.wxapi目录下，创建一个WXPayEntryActivity.java界面，别忘了需要在Manifest.xml里面注册activity

public class WXPayEntryActivity extends AppCompatActivity implements IWXAPIEventHandler {

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        try {
            boolean result = WXUtil.getInstance(this).getApi().handleIntent(getIntent(), this);
            if (!result) {
                ILog.e("参数不合法，未被SDK处理，退出");
                finish();
            }
        } catch (Exception e) {
            e.printStackTrace();
            ILog.e("e:" + e.getMessage());
        }
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        WXUtil.getInstance(this).getApi().handleIntent(data, this);
    }

    @Override
    protected void onNewIntent(Intent intent) {
        super.onNewIntent(intent);
        setIntent(intent);
        WXUtil.getInstance(this).getApi().handleIntent(intent, this);
        finish();
    }

    @Override
    public void onReq(BaseReq baseReq) {
    }

    @Override
    public void onResp(BaseResp baseResp) {
        ILog.e("baseResp:" + baseResp.getType());
        if (baseResp.getType() == ConstantsAPI.COMMAND_PAY_BY_WX) {//微信支付
            PayResp resp = (PayResp) baseResp;
            switch (baseResp.errCode) {
                case BaseResp.ErrCode.ERR_OK://支付成功
                    Log.e("微信支付成功");
                    this.finish();
                    break;
                case BaseResp.ErrCode.ERR_USER_CANCEL:
                case BaseResp.ErrCode.ERR_COMM:
                case BaseResp.ErrCode.ERR_SENT_FAILED:
                case BaseResp.ErrCode.ERR_AUTH_DENIED:
                case BaseResp.ErrCode.ERR_BAN:
                case BaseResp.ErrCode.ERR_UNSUPPORT:
                    Log.e("微信支付失败：" + resp.errCode);
                    this.finish();
                    break;
            }
        }
    }

    @Override
    public Resources getResources() {
        Resources res = super.getResources();
        Configuration config = new Configuration();
        config.setToDefaults();
        res.updateConfiguration(config, res.getDisplayMetrics());
        return res;
    }
}
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到此微信支付就完成了！！！