我想通过FileOutputstream将文件写入手机的SD卡。目录已正确创建,但文件本身的创建失败。这是我的代码:
File outputDir = new File(Environment.getExternalStorageDirectory().getAbsolutePath() + "/scan");
outputDir.mkdirs();
File outputFile = new File(outputDir, "image_" + System.currentTimeMillis() + ".jpg");
cameraView.setResolution(MAX_HEIGHT, MAX_WIDTH);
cameraView.takePicture(outputFile);
outputDir是可读写的,当然也设置了写入外部存储的权限。当我检查outputfile.exists()时,结果为false。这是错误消息:
09-09 12:05:56.232: E/BitmapFactory(24467): Unable to decode stream: java.io.FileNotFoundException: /storage/sdcard0/scan/image_1441793154138.jpg: open failed: ENOENT (No such file or directory)
我在这里做错了什么?
编辑: 以下是cameraView对象在拍摄图片时所做的事情:
public void takePicture(File file) {
this.file = file;
mCamera.setPreviewCallback(null);
mCamera.takePicture(null, null, this);
}
@Override
public void onPictureTaken(byte[] data,
Camera camera) {
mCamera.startPreview();
mCamera.setPreviewCallback(this);
try {
FileOutputStream fos = new FileOutputStream(file);
fos.write(data);
fos.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
答案 0 :(得分:0)
AndroidManifest.xml