[help wanted]登录拦截以及登录后再跳转回具体页面

[zhangchaoxu]

需求：

类似web中登录后跳转到具体页面，在app的某个位置NormalActivity(fragment/activity)，点击进入另外一个需要登录才能访问的页面(NeedLoginActivity)。判断发现用户未登录，跳到登录页面(LoginActivity)。登录成功以后希望跳转到NeedLoginActivity，并且带有原始调用NeedLoginActivity时候的bundle requestCode等参数。

思路：

1. 在NeedLoginActivity中添加登录拦截器

@Route(value = {"NeedLoginActivity"}, interceptors = {"Login"})
public class NeedLoginActivity

2. 定义登录拦截器，并且在拦截器中判断是否登录

public class LoginInterceptor implements RouteInterceptor {

    @Override
    public boolean intercept(Context context, RouteRequest routeRequest) {
        boolean isUserLogin = App.getInstance().isUserLogin();
        if (!isUserLogin) {
            // 未登录则跳转到登录页面,不直接将routeRequest传递是因为routeRequest中bundle无法序列化
            Router.build("Login")
                    .with("routeExtras", routeRequest.getExtras())
                    .with("routePath", routeRequest.getUri().toString())
                    .with("routeRequestCode", routeRequest.getRequestCode())
                    .requestCode(RequestCode.USER_LOGIN)
                    .go(context);
            ToastUtils.showLong(R.string.login_request);
        }
        return !isUserLogin;
    }
}

3. 在登录页面，登录成功以后

@Route({"Login"})
public class LoginActivity extends AppBaseActivity {

    @InjectParam
    Bundle routeBundle;
    @InjectParam
    String routePath;
    @InjectParam
    int routeRequestCode;
    
     /**
     * 登录成功，处理登录结果
     */
    private void loginSuccess(final LoginResult result) {
        App.getInstance().saveUserLogin(result);
       
        Intent intent = new Intent();
        intent.putExtra("routePath", routePath);
        intent.putExtra("routeBundle", routeBundle);
        intent.putExtra("routeRequestCode", routeRequestCode);

         setResult(Activity.RESULT_OK, intent);
         finish();
        }
    }
 
}

4. 在NormalActivity的onActivityResult捕获LoginActivity中返回的route信息，并再次尝试跳转到NeedLoginActivity

@Override
    public void onActivityResult(int requestCode, int resultCode, Intent data) {
        if (requestCode == RequestCode.USER_LOGIN && resultCode == Activity.RESULT_OK && null != data) {
            Bundle routeBundle = data.getBundleExtra("routeBundle");
            String routePath = data.getStringExtra("routePath");
            int routeRequestCode = data.getIntExtra("routeRequestCode", 0);
            if (!StringUtils.isEmpty(routePath)) {
                IRouter iRouter = Router.build("routePath");
                if (null != routeBundle) {
                    iRouter.with(routeBundle);
                }
                if (0 != routeRequestCode) {
                    iRouter.requestCode(routeRequestCode);
                }
                iRouter.go(this);
            }
        } else {
            super.onActivityResult(requestCode, resultCode, data);
        }
    }

遇到的问题

1. route跳转会带有bundle requestcode anim等信息，需要挨个传递到LoginActivity，比较麻烦。直接传递RouteRequest会报RouteRequest中的bundle无法序列化的错误
2. 如果跳转的初始页面是一个activity还ok，上述整个流程都可以走通，但是如果是一个fragment就会出现一个问题，那就是拦截器中intercept(Context context, RouteRequest routeRequest)方法中的content是这个fragment附属的activity，也就是说LoginActivity登录结果只能再附属的activity中onActivityResult获取，无法再该fragment的onActivityResult获取。

上述1只是麻烦一点，还可以解决。2的话有点麻烦。

@chenenyu 不知道我上述描述是否清晰，对于这个需求这个思路是否正确，另外就是在拦截器的intercept中是否可以获取到原始go()带有的content/fragment？
谢谢

[chenenyu]

抱歉才看到，我仔细想下再回复你。

[zhangchaoxu]

补充一下对于问题1的log，我将LoginInterceptor修改为直接传递RouterRequest，报错信息如下

@Interceptor("Login")
public class LoginInterceptor implements RouteInterceptor {

    @Override
    public boolean intercept(Context context, RouteRequest routeRequest) {
        boolean isUserLogin = App.getInstance().isUserLogin();
        if (!isUserLogin) {
            // 未登录则跳转到登录页面,不直接将routeRequest传递是因为routeRequest中bundle无法序列化
            /*Router.build("Login")
                    .with("routeExtras", routeRequest.getExtras())
                    .with("routePath", routeRequest.getUri().toString())
                    .with("routeRequestCode", routeRequest.getRequestCode())
                    .requestCode(RequestCode.USER_LOGIN)
                    .go(context);*/
            Router.build("Login")
                    .with("routeRequest", routeRequest)
                    .requestCode(RequestCode.USER_LOGIN)
                    .go(context);
            ToastUtils.showLong(R.string.login_request);
        }
        return !isUserLogin;
    }
}

错误信息

java.lang.RuntimeException: Parcelable encountered IOException writing serializable object (name = com.chenenyu.router.RouteRequest)
        at android.os.Parcel.writeSerializable(Parcel.java:1394)
        at android.os.Parcel.writeValue(Parcel.java:1341)
        at android.os.Parcel.writeArrayMapInternal(Parcel.java:644)
        at android.os.BaseBundle.writeToParcelInner(BaseBundle.java:1313)
        at android.os.Bundle.writeToParcel(Bundle.java:1034)
        at android.os.Parcel.writeBundle(Parcel.java:669)
        at android.content.Intent.writeToParcel(Intent.java:7485)
        at android.app.ActivityManagerProxy.startActivity(ActivityManagerNative.java:2411)
        at android.app.Instrumentation.execStartActivity(Instrumentation.java:1496)
        at android.app.Activity.startActivityForResult(Activity.java:3745)
        at android.support.v4.app.BaseFragmentActivityApi16.startActivityForResult(BaseFragmentActivityApi16.java:54)
        at android.support.v4.app.FragmentActivity.startActivityForResult(FragmentActivity.java:67)
        at android.support.v4.app.ActivityCompat.startActivityForResult(ActivityCompat.java:230)
        at com.chenenyu.router.RealRouter.go(RealRouter.java:480)
        at com.idogfooding.exchange.user.LoginInterceptor.intercept(LoginInterceptor.java:36)
        at com.chenenyu.router.RealRouter.intercept(RealRouter.java:458)
        at com.chenenyu.router.RealRouter.finalizeIntent(RealRouter.java:255)
        at com.chenenyu.router.RealRouter.getIntent(RealRouter.java:235)
        at com.chenenyu.router.RealRouter.go(RealRouter.java:506)
        at com.idogfooding.exchange.news.NewsListFragment.lambda$cfgAdapter$0$NewsListFragment(NewsListFragment.java:66)
        at com.idogfooding.exchange.news.NewsListFragment$$Lambda$0.onItemClick(Unknown Source)
        at com.chad.library.adapter.base.BaseQuickAdapter.setOnItemClick(BaseQuickAdapter.java:976)
        at com.chad.library.adapter.base.BaseQuickAdapter$5.onClick(BaseQuickAdapter.java:956)
        at android.view.View.performClick(View.java:4780)
        at android.view.View$PerformClick.run(View.java:19866)
        at android.os.Handler.handleCallback(Handler.java:739)
        at android.os.Handler.dispatchMessage(Handler.java:95)
        at android.os.Looper.loop(Looper.java:135)
        at android.app.ActivityThread.main(ActivityThread.java:5254)
        at java.lang.reflect.Method.invoke(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:372)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
     Caused by: java.io.NotSerializableException: android.os.Bundle
        at java.io.ObjectOutputStream.writeNewObject(ObjectOutputStream.java:1344)
        at java.io.ObjectOutputStream.writeObjectInternal(ObjectOutputStream.java:1651)
        at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:1497)
        at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:1461)
        at java.io.ObjectOutputStream.writeFieldValues(ObjectOutputStream.java:959)
        at java.io.ObjectOutputStream.defaultWriteObject(ObjectOutputStream.java:360)
        at java.io.ObjectOutputStream.writeHierarchy(ObjectOutputStream.java:1054)
        at java.io.ObjectOutputStream.writeNewObject(ObjectOutputStream.java:1384)
        at java.io.ObjectOutputStream.writeObjectInternal(ObjectOutputStream.java:1651)
        at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:1497)
        at java.io.ObjectOutputStream.writeObject(ObjectOutputStream.java:1461)
        at android.os.Parcel.writeSerializable(Parcel.java:1389)