Question

我有以下代码将捕获的图像写入SD卡

private static File getOutputMediaFile(){
    File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(
            Environment.DIRECTORY_PICTURES), "AppName");

    if (!mediaStorageDir.exists()){
        if (!mediaStorageDir.mkdirs()){
            return null;
        }
    }

    String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
    return new File(mediaStorageDir.getPath() + File.separator +
            "IMG_"+ timeStamp + ".jpg");
}

使用如下：

public void takePicture(){
    i= new Intent(MediaStore.ACTION_IMAGE_CAPTURE); //Open camera
    file = Uri.fromFile(getOutputMediaFile());
    i.putExtra(MediaStore.EXTRA_OUTPUT, file);
    startActivityForResult(i, 100);
}

捕获图像后，文件的路径将发送到以下函数：

public void sendForUpload(String uploadUrl, String path){
    File dir = Environment.getExternalStorageDirectory();
    File imgFile = new File(dir, path);
    sendFile(uploadUrl, imgFile);
}
public void sendFile(String uploadUrl, File file){
    Log.d(GlobalClass.TAG, "File has arrived here");
    Log.d(GlobalClass.TAG, file.toString());
    byte[] fileData1 = new byte[(int) file.length()];
    FileInputStream fileInputStream;
    try{
        fileInputStream = new FileInputStream(file);
        fileInputStream.read(fileData1);
        fileInputStream.close();
    }catch (Exception e){
        Log.d("Error", e.getMessage());
    }
    .... // Upload
}

此处try阻止失败，日志显示错误：

D/Error: /storage/emulated/0/storage/emulated/0/Pictures/AppName/IMG_20160516_120506.jpg: open failed: ENOENT (No such file or directory)

如何将文件读入sendFile()？

Answer 1

仔细查看错误中的路径：

/storage/emulated/0/storage/emulated/0/Pictures/AppName/IMG_20160516_120506.jpg

您会注意到/storage/emulated/0重复。

替换：

File dir = Environment.getExternalStorageDirectory();
File imgFile = new File(dir, path);

使用：

File imgFile = new File(path);

Answer 2

我有这个问题的解决方案。这个问题很容易解决。

只需转到您的 AndroidManifest.xml

然后=>应用

只需输入这一行 => android:requestLegacyExternalStorage="true"

您的问题将得到解决。

Android代码无法创建文件。没有找到这样的文件或目录错误

2 个答案: