无法在Android Oreo(API 26)中创建目录 [英] Failed to create directory in Android Oreo (API 26)

问题描述

我已经阅读了有关Android Oreo行为和更改的文档.

I have already read the documentation for Android Oreo's Behavior and changes.

我知道要为Android Oreo(API 26)创建文件目录有不同的过程

I know there is different procedure to create file directory for Android Oreo (API 26)

代码:

 File mediaStorageDir = null;

    if (Build.VERSION.SDK_INT >= 26) {
        mediaStorageDir = new File(Environment.getExternalStorageDirectory().toString(), "MyDirectory");
        Log.v("HEREEEEE","YES");
    } else {
        mediaStorageDir = new File(Environment.getExternalStorageDirectory().toString()
                + File.separator + "MyDirectory");
    }

    if (!mediaStorageDir.exists()) {
        if (!mediaStorageDir.mkdirs()) {
            Toast.makeText(RecordVideoActivity.this, "Failed to create directory MyDirectory.",
                    Toast.LENGTH_LONG).show();
            return null;
        }
    }

但是每次我敬酒 都无法创建目录MyDirectory. 我也可以Log.v("HEREEEEE","YES");，但不知道它没有创建目录.

But every time i am getting toast of Failed to create directory MyDirectory. I am able to Log.v("HEREEEEE","YES"); also but don't know it's not creating directory.

我们将不胜感激.

推荐答案

您必须征得许可才能发布棒棒糖，您可以在这篇文章中寻找答案

Post Lollipop you have to ask for permission, you can look for the answer in this post here

public  boolean isStoragePermissionGranted() {
    if (Build.VERSION.SDK_INT >= 23) {
        if (checkSelfPermission(android.Manifest.permission.WRITE_EXTERNAL_STORAGE)
                == PackageManager.PERMISSION_GRANTED) {
            Log.v(TAG,"Permission is granted");
            return true;
        } else {

            Log.v(TAG,"Permission is revoked");
            ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 1);
            return false;
        }
    }
    else { //permission is automatically granted on sdk<23 upon installation
        Log.v(TAG,"Permission is granted");
        return true;
    }
}

权限结果回调:

@Override
public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    if(grantResults[0]== PackageManager.PERMISSION_GRANTED){
        Log.v(TAG,"Permission: "+permissions[0]+ "was "+grantResults[0]);
        //Create your Directory here
    }
}

这篇关于无法在Android Oreo(API 26)中创建目录的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！