从android fb sdk向facebook墙发布消息总是错误
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Post message to facebook wall from android fb sdk always error
提问by Lorensius W. L. T
I have problem with fb sdk for Android (downloaded from http://github.com/facebook/facebook-android-sdk). Tried to post wall but always get error (permission already set and logged in to fb)
我的 fb sdk for Android 有问题（从http://github.com/facebook/facebook-android-sdk下载）。试图贴墙但总是出错（权限已经设置并登录到 fb）
here is the code snippet onClick function, i made small modifications on their sample code:
这是 onClick 函数的代码片段，我对他们的示例代码做了一些小的修改：
Bundle params = new Bundle();
params.putString("message", "Test");
params.putString("name", "American Virgin");
params.putString("link", "http://bit.ly/12345");
params.putString("description", "A Freshman College Girl on a scholarship from an ...");
params.putString("picture", "http://xxx/MOV1026.jpg");
mAsyncRunner.request("me/feed", params, "POST", new TestRequestListener());
From DDMS i get the following error:
从 DDMS 我收到以下错误：
09-16 18:55:28.372: WARN/Bundle(14392): Key picture expected byte[] but value was a java.lang.String. The default value <null> was returned.
09-16 18:55:28.414: WARN/Bundle(14392): Attempt to cast generated internal exception:
09-16 18:55:28.414: WARN/Bundle(14392): java.lang.ClassCastException: java.lang.String
09-16 18:55:28.414: WARN/Bundle(14392): at android.os.Bundle.getByteArray(Bundle.java:1220)
09-16 18:55:28.414: WARN/Bundle(14392): at com.facebook.android.Util.openUrl(Util.java:153)
09-16 18:55:28.414: WARN/Bundle(14392): at com.facebook.android.Facebook.request(Facebook.java:295)
09-16 18:55:28.414: WARN/Bundle(14392): at com.facebook.android.AsyncFacebookRunner.run(AsyncFacebookRunner.java:209)
09-16 18:55:28.422: WARN/Bundle(14392): Key message expected byte[] but value was a java.lang.String. The default value <null> was returned.
09-16 18:55:28.432: WARN/Bundle(14392): Attempt to cast generated internal exception:
09-16 18:55:28.432: WARN/Bundle(14392): java.lang.ClassCastException: java.lang.String
09-16 18:55:28.432: WARN/Bundle(14392): at android.os.Bundle.getByteArray(Bundle.java:1220)
09-16 18:55:28.432: WARN/Bundle(14392): at com.facebook.android.Util.openUrl(Util.java:153)
09-16 18:55:28.432: WARN/Bundle(14392): at com.facebook.android.Facebook.request(Facebook.java:295)
09-16 18:55:28.432: WARN/Bundle(14392): at com.facebook.android.AsyncFacebookRunner.run(AsyncFacebookRunner.java:209)
09-16 18:55:28.452: WARN/Bundle(14392): Key format expected byte[] but value was a java.lang.String. The default value <null> was returned.
09-16 18:55:28.472: WARN/Bundle(14392): Attempt to cast generated internal exception:
09-16 18:55:28.472: WARN/Bundle(14392): java.lang.ClassCastException: java.lang.String
09-16 18:55:28.472: WARN/Bundle(14392): at android.os.Bundle.getByteArray(Bundle.java:1220)
09-16 18:55:28.472: WARN/Bundle(14392): at com.facebook.android.Util.openUrl(Util.java:153)
09-16 18:55:28.472: WARN/Bundle(14392): at com.facebook.android.Facebook.request(Facebook.java:295)
09-16 18:55:28.472: WARN/Bundle(14392): at com.facebook.android.AsyncFacebookRunner.run(AsyncFacebookRunner.java:209)
采纳答案by Cristian
That's really weird... I have an app which uses the same syntax but it works really well. I just check the source code of the FB SDK and it seems it has changed a lot... I found this on the SDK src:
这真的很奇怪......我有一个使用相同语法的应用程序，但它运行得非常好。我只是检查了 FB SDK 的源代码，它似乎发生了很大变化......我在 SDK src 上找到了这个：
for (String key : params.keySet()) {
if (params.getByteArray(key) != null) {
dataparams.putByteArray(key, params.getByteArray(key));
}
}
So, you try to do this:
所以，你尝试这样做：
Bundle params = new Bundle();
params.putByteArray("message", "Test".getBytes());
params.putByteArray("name", "American Virgin".getBytes());
params.putByteArray("link", "http://bit.ly/12345".getBytes());
params.putByteArray("description", "A Freshman College Girl on a scholarship from an ...".getBytes());
params.putByteArray("picture", "http://xxx/MOV1026.jpg".getBytes());
mAsyncRunner.request("me/feed", params, "POST", new TestRequestListener());
回答by Chris Banes
The fix is:
修复方法是：
if (parameters.get(key) instanceof byte[]) {
instead of
代替
if (parameters.getByteArray(key) != null) {
on line 63 of Util.java.
在 Util.java 的第 63 行。
And
和
if (params.get(key) instanceof byte[]) {
instead of
代替
if (params.getByteArray(key) != null) {
on line 155 of Util.java.
在 Util.java 的第 155 行。
For some strange reason, on Samsung Nexus S (perhaps other devices too) it returns a String, not a byte[].
出于某种奇怪的原因，在三星 Nexus S（可能还有其他设备）上，它返回一个字符串，而不是一个字节 []。
回答by benvd
I think the error message is quite clear... "Key picture expected byte[] but value was a java.lang.String."
我认为错误信息很清楚...... "Key picture expected byte[] but value was a java.lang.String."
The value for the key "picture" in your Bundle paramsshould be a byte array, not a String.
Bundle 中关键“图片”的值params应该是一个字节数组，而不是一个字符串。
edit: Didn't read Cristian's answer. I'm pretty sure you should pass along the actual image data, not the filename in bytes. But I could be wrong.
编辑：没有阅读克里斯蒂安的回答。我很确定您应该传递实际的图像数据，而不是以字节为单位的文件名。但我可能是错的。
another edit: Yeah, so I'd downvote my own answer if I could, but it seems I didn't even read the question properly. The error happens not just for picture, so I have no idea what's wrong...
另一个编辑：是的，所以如果可以的话，我会否决我自己的答案，但似乎我什至没有正确阅读问题。错误不仅发生在图片上，所以我不知道出了什么问题......
