如何引用原始文件夹中的Andr​​oid文件 [英] How to reference a File in raw folder in Android

问题描述

我只是想创建这样一个文件对象

I just want to create a File object like this

文件myImageFile =新的文件（此搜索）;

但它给我的异常 FileNotFoundException异常
如何引用文件在我的原始文件夹

but it is giving me exception of FileNotFoundException
How can i reference a file inside my raw Folder

编辑： 其实我想要做这样的事情

Actually i wanted to do something like this

MultipartEntity multipartEntity =新MultipartEntity（HttpMultipartMode.BROWSER_COMPATIBLE）;  multipartEntity.addPart（上载，新FileBody（新文件（MYIMAGE）））;

MultipartEntity multipartEntity= new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE); multipartEntity.addPart("uploaded", new FileBody(new File("myimage")));

推荐答案

这里有2个功能。一位来自RAW读取和一名​​来自资产

here are 2 functions. one to read from RAW and one from the Assets

/**
 * Method to read in a text file placed in the res/raw directory of the
 * application. The method reads in all lines of the file sequentially.
 */

public static void readRaw(Context ctx,int res_id) {

    InputStream is = ctx.getResources().openRawResource(res_id);
    InputStreamReader isr = new InputStreamReader(is);
    BufferedReader br = new BufferedReader(isr, 8192); // 2nd arg is buffer
                                                        // size

    // More efficient (less readable) implementation of above is the
    // composite expression
    /*
     * BufferedReader br = new BufferedReader(new InputStreamReader(
     * this.getResources().openRawResource(R.raw.textfile)), 8192);
     */

    try {
        String test;
        while (true) {
            test = br.readLine();
            // readLine() returns null if no more lines in the file
            if (test == null)
                break;
        }
        isr.close();
        is.close();
        br.close();
    } catch (IOException e) {
        e.printStackTrace();
    }

}

和从资产文件夹

/**
 * Read a file from assets
 * 
 * @return the string from assets
 */

public static String getQuestions(Context ctx,String file_name) {

    AssetManager assetManager = ctx.getAssets();
    ByteArrayOutputStream outputStream = null;
    InputStream inputStream = null;
    try {
        inputStream = assetManager.open(file_name);
        outputStream = new ByteArrayOutputStream();
        byte buf[] = new byte[1024];
        int len;
        try {
            while ((len = inputStream.read(buf)) != -1) {
                outputStream.write(buf, 0, len);
            }
            outputStream.close();
            inputStream.close();
        } catch (IOException e) {
        }
    } catch (IOException e) {
    }
    return outputStream.toString();

}

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