如何使用addListenerIfPending

时间：2014-11-12 14:58:05

标签： android robospice

有人能告诉我我是否正确使用PendingRequestListener（我正在使用android的robospice库）？以下是我的代码示例：

我启动并停止每个活动的经理：LoginActivty.java 

private SpiceManager spiceManager = new SpiceManager(UncachedSpiceService.class);

    @Override
    protected void onStart() {
        spiceManager.start(this);
        super.onStart();
    }

    @Override
    protected void onStop() {
        if (spiceManager.isStarted()) {
            spiceManager.shouldStop();
        }
        super.onStop();
    }

    public SpiceManager getSpiceManager() {
        return spiceManager;
    }

在LoginFragment.java中 在“忘记密码”按钮的onClick上，我提示用户输入他们的电子邮件或ID并点击提交：

mEmailOrID = input.getText().toString();

if (AppStatus.getInstance(mContext).isOnline(mContext)) {
    ((LoginActivity) getActivity()).getSpiceManager().execute(
            new RequestForgotPassword(mEmailOrID),
            mEmailOrID,
            DurationInMillis.ALWAYS_EXPIRED,
            new ForgotPasswordRequestListener());
} else {
    Toast.makeText(mContext, R.string.toast_error_web_connection, Toast.LENGTH_SHORT).show();
}

这是ForgotPasswordRequestListener（）

public final class ForgotPasswordRequestListener implements PendingRequestListener<JSONObject> {

    @Override
    public void onRequestFailure(SpiceException spiceException) {
        if (isAdded()) {
            Toast.makeText(getActivity(), "Request failure", Toast.LENGTH_SHORT).show();
        }
    }

    @Override
    public void onRequestSuccess(final JSONObject result) {
        if (isAdded()) {
            try {
                JSONObject response = result.getJSONObject("response");
                if (response.getString("success").matches("1")) {
                    Toast.makeText(getActivity(), "An email has been sent to your account to assist in recovering your password", Toast.LENGTH_LONG).show();
                } else {
                    Toast.makeText(getActivity(), "We don't have any record of that ID or registered email, sorry! Please try again", Toast.LENGTH_LONG).show();
                }
            } catch (JSONException e) {
                e.printStackTrace();
            }
        }
    }

    @Override
    public void onRequestNotFound() {
        //Called if the addListenerIfPending finds no pending request.
        Toast.makeText(getActivity(), "NO REQUEST FOUND", Toast.LENGTH_LONG).show();
    }
}

LoginFragment包含此内容以在必要时重新启动请求：

@Override
public void onActivityCreated(@Nullable Bundle savedInstanceState) {
    super.onActivityCreated(savedInstanceState);
    if (savedInstanceState != null) {
        mEmailOrID = savedInstanceState.getString(Constants.SpiceTags.LOGIN_FORGOT_PASS);
    }
}

@Override
public void onStart() {
    super.onStart();
    SpiceManager spiceManager = ((LoginActivity) getActivity()).getSpiceManager();
    spiceManager.addListenerIfPending(JSONObject.class, mEmailOrID, new ForgotPasswordRequestListener());
}

@Override
public void onSaveInstanceState(Bundle outState) {
    super.onSaveInstanceState(outState);

    outState.putString(Constants.SpiceTags.LOGIN_FORGOT_PASS, mEmailOrID);
}

这是实际请求，延迟10秒，所以我有机会调试等。

public class RequestForgotPassword extends SpiceRequest< JSONObject > {

    private String mEmailOrID;

    public RequestForgotPassword(String emailOrID) {
        super( JSONObject.class );

        mEmailOrID = emailOrID;
    }

    @Override
    public JSONObject loadDataFromNetwork() throws IOException {
        Ln.d( "Calling web service" );

        ServerFunctions serverFunctions = new ServerFunctions();
        SystemClock.sleep(10000);
        return serverFunctions.forgotPassword(mEmailOrID);
    }

}

我相信此代码非常接近样本，我应该能够启动忘记密码请求，点击主页按钮并在几分钟后返回应用程序，请求将自动重新尝试缓存键是相同的（在我的情况下是mEmailOrId实例变量）。我每次都得到onRequestNotFound（）回调。我能做错什么？

以下是我对Robospice Google Group page的初步想法的链接。

编辑：这是logcat，我在请求待处理时回到家中。正如您所看到的那样，待处理的请求就在那里，不久之后会有一些东西杀掉它，所以我一定不能正确保存它。

 D//SpiceManager.java:326﹕ 15:26:21.719 main SpiceManager stopping. Joining
 V//SpiceManager.java:767﹕ 15:26:21.738 main Cleared listeners of all requests to launch
 D//SpiceManager.java:789﹕ 15:26:21.751 main Removing listeners of pending request : CachedSpiceRequest [requestCacheKey=rjhf, cacheDuration=-1, spiceRequest=com.loylap.requester.RequestForgotPassword@43a190f8] : 1
 D//RequestProgressManager.java:147﹕ 15:26:21.764 main Removing listeners of request : CachedSpiceRequest [requestCacheKey=rjhf, cacheDuration=-1, spiceRequest=com.loylap.requester.RequestForgotPassword@43a190f8] : 1
 V//SpiceManager.java:796﹕ 15:26:21.775 main Cleared listeners of all pending requests
 D//SpiceManager.java:265﹕ 15:26:21.788 SpiceManagerThread 2 Interrupted while waiting for new request.
 D//SpiceManager.java:271﹕ 15:26:21.796 SpiceManagerThread 2 SpiceManager request runner terminated. Requests count: 0, stopped true, interrupted false
 D//SpiceManager.java:339﹕ 15:26:21.805 main Runner join time (ms) when should stop 19
 V//SpiceManager.java:1221﹕ 15:26:21.812 main Unbinding from service start.
 V//SpiceManager.java:1225﹕ 15:26:21.819 main Unbinding from service.
 D//SpiceManager.java:1227﹕ 15:26:21.831 main Unbound from service : UncachedSpiceService
 D//SpiceManager.java:345﹕ 15:26:21.841 main SpiceManager stopped.
 D/FORGOT PASSWORD﹕ rjhf
 I/Choreographer﹕ Skipped 371 frames!  The application may be doing too much work on its main thread.
 V//SpiceService.java:506﹕ 15:26:22.793 main Pending requests : 1
 V//SpiceService.java:511﹕ 15:26:22.802 main Start foreground
 V//SpiceService.java:495﹕ 15:26:22.855 main Pending requests : 1
 D//DefaultRequestRunner.java:151﹕ 15:26:24.140 Thread-59213 Network request call ended.
 D//DefaultRequestRunner.java:171﹕ 15:26:24.147 Thread-59213 Start caching content...
 D//RequestProgressManager.java:82﹕ 15:26:24.159 Thread-59213 Sending progress WRITING_TO_CACHE
 D//SpiceServiceListenerNotifier.java:146﹕ 15:26:24.167 Thread-59213 Message queue is Handler (android.os.Handler) {439d1b68}
 V//DefaultRequestListenerNotifier.java:131﹕ 15:26:24.185 main Notifying 0 listeners of progress com.octo.android.robospice.request.listener.RequestProgress@438eec90
 D//RequestProgressManager.java:82﹕ 15:26:24.210 Thread-59213 Sending progress COMPLETE
 D//SpiceServiceListenerNotifier.java:146﹕ 15:26:24.219 Thread-59213 Message queue is Handler (android.os.Handler) {439d1b68}
 V//DefaultRequestListenerNotifier.java:131﹕ 15:26:24.234 main Notifying 0 listeners of progress com.octo.android.robospice.request.listener.RequestProgress@43a0ba60
 D//SpiceServiceListenerNotifier.java:146﹕ 15:26:24.240 Thread-59213 Message queue is Handler (android.os.Handler) {439d1b68}
 V//DefaultRequestListenerNotifier.java:166﹕ 15:26:24.255 main Notifying 0 listeners of request success
 V//RequestProgressManager.java:161﹕ 15:26:24.275 Thread-59213 Removing CachedSpiceRequest [requestCacheKey=rjhf, cacheDuration=-1, spiceRequest=com.loylap.requester.RequestForgotPassword@43a190f8]  size is 1
 D//RequestProgressManager.java:91﹕ 15:26:24.287 Thread-59213 Sending all request complete.
 V//SpiceService.java:495﹕ 15:26:24.344 Thread-59213 Pending requests : 0

1 个答案:

答案 0 :(得分：0)

addListenerIfPending（）仅附加侦听器以请求尚未到达的响应。但是对你的请求的响应可能是应用程序在后台，所以你可以从缓存中获取它。正如@bmurmistro所说，看看How to recover properly recover from an interupted uncached request using RoboSpice，这是类似的问题。

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