Android没有在Android 6.0中显示RECORD_AUDIO的权限对话框

Question

Android没有显示RECORD_AUDIO的权限对话框

我在android manifest

中添加了所需的权限

<uses-permission android:name="android.permission.RECORD_AUDIO" />
<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />

以及以下代码

private boolean checkPermission() {
        int result = ContextCompat.checkSelfPermission(this, android.Manifest.permission.RECORD_AUDIO);
        if (result == PackageManager.PERMISSION_GRANTED) {
            return true;
        } else {
            return false;
        }
    }

private void requestPermission() {

        if (ActivityCompat.shouldShowRequestPermissionRationale(this, android.Manifest.permission.RECORD_AUDIO)) {
 Toast.makeText(this, "RECORD AUDIO Permission is required.",
                    Toast.LENGTH_LONG).show();

        } else {

            ActivityCompat.requestPermissions(this, new String[]{android.Manifest.permission.RECORD_AUDIO},
                    PERMISSION_REQUEST_CODE);

        }
    }

并检查

if (!checkPermission()) {
                requestPermission();
            }

但是没有显示询问权限的对话框或要求许可的屏幕，

我在模拟器上测试android 6.0