FileNotFoundException 打开失败：ENOENT（没有这样的文件或目录）

Question

我有一个名为“and.doc”的文件，其中包含大量记录，每个记录都具有这种形状

表达：防御；

所以我试图

• 用扫描仪读取文件
• 使用;作为分隔符
• 找到一种从定义中拆分表达式的方法
• 并以某种方式将它们添加到我的 Sqlite 数据库中（如果有人知道该怎么做，那就太好了）。

我正在使用此代码

    try {


  mf =new File("/home/agh/AndroidStudioProjects/Dicod/app/src/main/res/raw/and.doc");
        inputFile = new Scanner(mf);
        inputFile.useDelimiter(";");
        while (inputFile.hasNext())
        {
            String x = inputFile.next();
            Toast.makeText(getApplicationContext(),x,Toast.LENGTH_LONG).show();

       //Splitting and adding to the databse

        }


    }

    catch(FileNotFoundException e) {
        e.printStackTrace();
    }`

但我不断收到此错误

06-23 04:38:28.771 23620-23620/? W/System.err: java.io.FileNotFoundException: /home/agh/AndroidStudioProjects/Dicod/app/src/main/res/raw/and.txt: open failed: ENOENT (No such file or directory)
06-23 04:38:28.771 23620-23620/? W/System.err:     at libcore.io.IoBridge.open(IoBridge.java:465)
06-23 04:38:28.771 23620-23620/? W/System.err:     at java.io.FileInputStream.<init>(FileInputStream.java:76)
06-23 04:38:28.771 23620-23620/? W/System.err:     at java.util.Scanner.<init>(Scanner.java:158)
06-23 04:38:28.772 23620-23620/? W/System.err:     at java.util.Scanner.<init>(Scanner.java:138)
06-23 04:38:28.772 23620-23620/? W/System.err:     at com.example.agh.dicod.MainActivity.onCreate(MainActivity.java:28)
06-23 04:38:28.772 23620-23620/? W/System.err:     at android.app.Activity.performCreate(Activity.java:5990)
06-23 04:38:28.772 23620-23620/? W/System.err:     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
06-23 04:38:28.772 23620-23620/? W/System.err:     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2332)
06-23 04:38:28.772 23620-23620/? W/System.err:     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2442)
06-23 04:38:28.772 23620-23620/? W/System.err:     at android.app.ActivityThread.access$800(ActivityThread.java:156)
06-23 04:38:28.772 23620-23620/? W/System.err:     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1351)
06-23 04:38:28.772 23620-23620/? W/System.err:     at android.os.Handler.dispatchMessage(Handler.java:102)
06-23 04:38:28.772 23620-23620/? W/System.err:     at android.os.Looper.loop(Looper.java:211)
06-23 04:38:28.772 23620-23620/? W/System.err:     at android.app.ActivityThread.main(ActivityThread.java:5389)
06-23 04:38:28.772 23620-23620/? W/System.err:     at java.lang.reflect.Method.invoke(Native Method)
06-23 04:38:28.772 23620-23620/? W/System.err:     at java.lang.reflect.Method.invoke(Method.java:372)
06-23 04:38:28.772 23620-23620/? W/System.err:     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1020)
06-23 04:38:28.772 23620-23620/? W/System.err:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:815)
06-23 04:38:28.772 23620-23620/? W/System.err: Caused by: android.system.ErrnoException: open failed: ENOENT (No such file or directory)
06-23 04:38:28.773 23620-23620/? W/System.err:     at libcore.io.Posix.open(Native Method)
06-23 04:38:28.773 23620-23620/? W/System.err:     at libcore.io.BlockGuardOs.open(BlockGuardOs.java:186)
06-23 04:38:28.773 23620-23620/? W/System.err:     at libcore.io.IoBridge.open(IoBridge.java:451)
06-23 04:38:28.773 23620-23620/? W/System.err:  ... 17 more

Answer 1

也许所选目录中不存在该文件或未授予 READ_EXTERNAL_STORAGE 权限。

请注意，如果您以 API 23 为目标，则必须在运行时请求权限，而不仅仅是在清单中请求权限。

http://developer.android.com/training/permissions/requesting.html