目录创建无法在Marshmallow Android中运行 [英] Directory creation not working in Marshmallow Android

问题描述

我正在我的原生应用程序中创建目录。它在Android 5.0中完美运行，但在Android 6.0（Marshmallow）中有时它工作，有时没有。我正在使用以下代码创建新目录。我正在保存视频和目录中的图像文件。

I am creating directory in my native application.It is working perfectly in Android 5.0, But In Android 6.0 (Marshmallow) some times it worked and some times not.I am using following code to create new directory.I am saving Video and image file in directory.

 public static void createApplicationFolder() {
    File f = new File(Environment.getExternalStorageDirectory(), File.separator + Config.VIDEO_COMPRESSOR_APPLICATION_DIR_NAME);
    f.mkdirs();
    f = new File(Environment.getExternalStorageDirectory(), File.separator + Config.VIDEO_COMPRESSOR_APPLICATION_DIR_NAME + Config.VIDEO_COMPRESSOR_COMPRESSED_VIDEOS_DIR);
    f.mkdirs();
    f = new File(Environment.getExternalStorageDirectory(), File.separator + Config.VIDEO_COMPRESSOR_APPLICATION_DIR_NAME + Config.VIDEO_COMPRESSOR_TEMP_DIR);
    f.mkdirs();

}

推荐答案

public class MyDevIDS extends AppCompatActivity {

        private static final int REQUEST_RUNTIME_PERMISSION = 123;

        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);

            if (CheckPermission(MyDevIDS.this, Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
                // you have permission go ahead
                createApplicationFolder();
            } else {
                // you do not have permission go request runtime permissions
                RequestPermission(MyDevIDS.this, Manifest.permission.WRITE_EXTERNAL_STORAGE, REQUEST_RUNTIME_PERMISSION);
            }
        }

        @Override
        public void onRequestPermissionsResult(int permsRequestCode, String[] permissions, int[] grantResults) {

            switch (permsRequestCode) {

                case REQUEST_RUNTIME_PERMISSION: {
                    if (grantResults.length > 0
                            && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                        // you have permission go ahead
                        createApplicationFolder();
                    } else {
                        // you do not have permission show toast.
                    }
                    return;
                }
            }
        }

        public void RequestPermission(Activity thisActivity, String Permission, int Code) {
            if (ContextCompat.checkSelfPermission(thisActivity,
                    Permission)
                    != PackageManager.PERMISSION_GRANTED) {
                if (ActivityCompat.shouldShowRequestPermissionRationale(thisActivity,
                        Permission)) {
                } else {
                    ActivityCompat.requestPermissions(thisActivity,
                            new String[]{Permission},
                            Code);
                }
            }
        }

        public boolean CheckPermission(Context context, String Permission) {
            if (ContextCompat.checkSelfPermission(context,
                    Permission) == PackageManager.PERMISSION_GRANTED) {
                return true;
            } else {
                return false;
            }
        }
    }

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