Java 启动android许可时崩溃

我正在使用导入的示例应用程序进行图像处理过滤。 它有两个主按钮打开相机和打开画廊

它在android Kitkat上运行良好，但当我尝试在android 9上启动相机时，它崩溃了

我尝试在清单上添加：

android:requestLegacyExternalStorage=“true”

，但没有成功

注意：我已经在上授予了摄像头和外部读写存储器的权限 显示

更新：显然，我必须让权限弹出窗口，它才能工作，因为我目前正在设置中手动启用它。我该怎么做

我错过了什么

Stacktrace

java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.documentscanner/com.scanlibrary.ScanActivity}: java.lang. 
SecurityException: Permission Denial: starting Intent { act=android.media.action.IMAGE_CAPTURE flg=0x3 cmp=com.android.camera2/com.android.camera.
CaptureActivity clip={text/uri-list U:content://com.scanlibrary.provider/external_files/scanSample/IMG_20191230_065113.jpg} (has extras) } from 
ProcessRecord{6bafaa3 13455:com.example.documentscanner/u0a140} (pid=13455, uid=10140) with revoked permission android.permission.CAMERA
 Caused by: java.lang.SecurityException: Permission Denial: starting Intent { act=android.media.action.IMAGE_CAPTURE flg=0x3 cmp=com.android.
camera2/com.android.camera.CaptureActivity clip={text/uri-list U:content://com.scanlibrary.provider/external_files/scanSample/IMG_20191230_065113.jpg} (has extras) } from ProcessRecord{6bafaa3 13455:com.example.documentscanner/u0a140} (pid=13455, uid=10140) with revoked permission android.permission.CAMERA
at com.scanlibrary.PickImageFragment.openCamera(PickImageFragment.java:129)
    at com.scanlibrary.PickImageFragment.handleIntentPreference(PickImageFragment.java:77)
    at com.scanlibrary.PickImageFragment.init(PickImageFragment.java:58)
    at com.scanlibrary.PickImageFragment.onCreateView(PickImageFragment.java:48)

PickImageFragment

 public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    view = inflater.inflate(R.layout.pick_image_fragment, null);
    init();
    return view;
}

private void init() {
    cameraButton = (ImageButton) view.findViewById(R.id.cameraButton);
    cameraButton.setOnClickListener(new CameraButtonClickListener());
    if (isIntentPreferenceSet()) {
        handleIntentPreference();
    } else {
        getActivity().finish();
    }
}

private void handleIntentPreference() {
    int preference = getIntentPreference();
    if (preference == ScanConstants.OPEN_CAMERA) {
        openCamera();
    } else if (preference == ScanConstants.OPEN_MEDIA) {
        openMediaContent();
    }
}

public void openCamera() {
    Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
    File file = createImageFile();
    boolean isDirectoryCreated = file.getParentFile().mkdirs();
    Log.d("", "openCamera: isDirectoryCreated: " + isDirectoryCreated);
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
        Uri tempFileUri = FileProvider.getUriForFile(getActivity().getApplicationContext(),
                "com.scanlibrary.provider", // As defined in Manifest
                file);
        cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, tempFileUri);
    } else {
        Uri tempFileUri = Uri.fromFile(file);
        cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, tempFileUri);
    }
    startActivityForResult(cameraIntent, ScanConstants.START_CAMERA_REQUEST_CODE);
}

---

您好，您可以在清单文件中使用这些权限和其他权限

<uses-feature
android:name="android.hardware.camera.any"
android:required="true" />
<uses-feature
android:name="android.hardware.camera.autofocus"
android:required="false" />

您必须在API 24及更高版本中请求运行时权限并获得用户的批准。检查更多：仅在检查是否已授予权限后打开相机。如果不先请求许可。@Rohit5k2如何在开始时弹出相机许可？请检查我标记的帖子和@Md.AsaduzzamanAs共享的链接，我说我已经给予了这些许可