如何从相机意图获取 URI？

Question

我已经阅读了这篇文章：从 android 中的相机意图获取 uri但这对我没有帮助。为了处理相机请求，我使用了以下代码：    public void startCamera() {    if (PermissionUtils.requestPermission(            this,            CAMERA_PERMISSIONS_REQUEST,            Manifest.permission.READ_EXTERNAL_STORAGE,            Manifest.permission.CAMERA)) {        //Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);        Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");        Uri photoUri = FileProvider.getUriForFile(this, getApplicationContext().getPackageName() + ".provider", getCameraFile());        intent.putExtra(MediaStore.EXTRA_OUTPUT, photoUri);        intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);        startActivityForResult(intent, CAMERA_IMAGE_REQUEST);    }} public File getCameraFile() {    File dir = getExternalFilesDir(Environment.DIRECTORY_PICTURES);    return new File(dir, FILE_NAME);}    @Overrideprotected void onActivityResult(int requestCode, int resultCode, Intent data) {    super.onActivityResult(requestCode, resultCode, data);    if (requestCode == CAMERA_IMAGE_REQUEST && resultCode == RESULT_OK) {        Uri photoUri = FileProvider.getUriForFile(this, getApplicationContext().getPackageName() + ".provider", getCameraFile());        uploadImage(photoUri);    }}当我调用函数“startCamera”时，应用程序崩溃并在行中出现错误：Uri photoUri = FileProvider.getUriForFile(this, getApplicationContext().getPackageName() + ".provider", getCameraFile());"有什么帮助吗？谢谢！

Answer 1

通过将以下内容添加到“AndroidManifest”来修复：

        <provider

        android:name="android.support.v4.content.FileProvider"

        android:authorities="${applicationId}.provider"

        android:exported="false"

        android:grantUriPermissions="true">

        <meta-data

            android:name="android.support.FILE_PROVIDER_PATHS"

            android:resource="@xml/provider_paths" />

    </provider>