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我希望我的用户使用内置相机拍摄照片作为附件。

有没有办法在按下按钮时调用相机并保存生成的照片？

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2 回答 2

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另一种选择是使用 BlackBerry Invoke API 启动本机相机应用程序并侦听文件系统事件：

Invoke.invokeApplication(Invoke.APP_TYPE_CAMERA, new CameraArguments());

然后，稍后：

class FileExplorerDemoJournalListener implements FileSystemJournalListener {
    public void fileJournalChanged() {
        long nextUSN = FileSystemJournal.getNextUSN();
        for (long lookUSN = nextUSN - 1; lookUSN >= _lastUSN && msg == null; --lookUSN) {
            FileSystemJournalEntry entry = FileSystemJournal.getEntry(lookUSN);
            if (entry == null) {
                break; 
            }
            String path = entry.getPath();
            if (path != null) {
                if (path.endsWith("png") || path.endsWith("jpg") || path.endsWith("bmp") || path.endsWith("gif") ){
                    switch (entry.getEvent()) {
                        case FileSystemJournalEntry.FILE_ADDED:
                            //either a picture was taken or a picture was added to the BlackBerry device 
                            break;
                        case FileSystemJournalEntry.FILE_DELETED:
                            //a picture was removed from the BlackBerry device;
                            break;
                    }
                }
            }
        }
    }
}

最后...

Application.addFileSystemJournalListener(new FileExplorerDemoJournalListener());

这将为您提供大部分的方式......取自：http ://docs.blackberry.com/en/developers/deliverables/11942/Detect_when_img_is_added_or_removed_file_system_740288_11.jsp

于 2010-09-20T16:30:02.127 回答