FilePicker 点击取消的按钮，找不到回调监听事件

[shanxinhu]

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FilePicker picker = new FilePicker(activity); picker.setExplorerConfig(config); picker.show(); picker.setOnCancelListener(new DialogInterface.OnCancelListener() { @Override public void onCancel(DialogInterface dialog) {

                }
            });

setOnCancelListener

事件没有回调，