//判断权限
    private void getPermission() {
            // 申请一个（或多个）权限，并提供用于回调返回的获取码（用户定义）
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                int permission1 = ActivityCompat.checkSelfPermission(getApplication(), Manifest.permission.ACCESS_COARSE_LOCATION);
                //不等于就是未授权
                if (permission1 != PackageManager.PERMISSION_GRANTED) {
//                    requestPermissions(permission.toArray(new String[permission.size()]), SDK_PERMISSION_REQUEST);
                    //判断是否可以弹出
                    if (ActivityCompat.shouldShowRequestPermissionRationale(this, Manifest.permission.ACCESS_COARSE_LOCATION)) {
                        // 提示 请求权限
                        ActivityCompat.requestPermissions(this, new String[]{
                                Manifest.permission.ACCESS_COARSE_LOCATION,
                                Manifest.permission.ACCESS_FINE_LOCATION,
                                Manifest.permission.WRITE_EXTERNAL_STORAGE,
                                Manifest.permission.READ_EXTERNAL_STORAGE,
                                Manifest.permission.READ_PHONE_STATE
                        }, REQUEST_CODE_PERMISSION);
                    } else {
                        // 禁止 转到设置
                        showToast("请打开外部存储权限");
                        Intent intent = new Intent();
                        intent.setAction("android.settings.APPLICATION_DETAILS_SETTINGS");
                        intent.setData(Uri.fromParts("package", getPackageName(), null));
                        startActivity(intent);
                    }

                }
                
            }
    }

//去设置页面之后返回的结果
    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);

        switch (requestCode) {
            case REQUEST_CODE_PERMISSION:
                if (grantResults[0] != 0) {
                    //未授权
                    showToast("请允许使用外部存储");
//未授权就退出
                    finish();
                } else {
                    showToast("已授权外部存储");
                }
                break;

            default:
                L.d("未处理的权限请求码");
                break;
        }
    }