取回照片时相机崩溃

Question

我正在尝试允许用户用相机应用程序拍摄一张照片，然后在应用程序中显示它的预览。

我还需要在应用程序的稍后阶段访问该文件（但这不是一个问题）

我有以下崩溃：

Permission Denial: opening provider android.support.v4.content.FileProvider from ProcessRecord{41f55850 10769:com.sec.android.app.camera/u0a84} (pid=10769, uid=10084) that is not exported from uid 10119

    <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/file_paths" />
    </provider>

<?xml version="1.0" encoding="utf-8"?>
<paths>
    <external-path
        name="my_images"
        path="Android/data/com.example.app/files/Pictures" />
</paths>

    private File setUpPhotoFile() throws IOException {
    String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.getDefault()).format(new Date());
    String imageFileName = "IMG_" + timeStamp + "_";
    File storageDir = getExternalFilesDir(Environment.DIRECTORY_PICTURES);
    File image = File.createTempFile(
            imageFileName,  /* prefix */
            ".jpg",   /* suffix */
            storageDir      /* directory */
    );
    return image;
}

if (isCameraApplicationAvailable(PhotoActivity.this)) {
                Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);


                File f = null;
                try {
                    f = setUpPhotoFile();
                    takePictureIntent.putExtra(MediaStore.EXTRA_OUTPUT, FileProvider.getUriForFile(PhotoActivity.this, BuildConfig.APPLICATION_ID + ".provider", f));
                } catch (IOException e) {
                   // Handle exception
                }
                List<ResolveInfo> resolvedIntentActivities = getPackageManager().queryIntentActivities(takePictureIntent, PackageManager.MATCH_DEFAULT_ONLY);
                for (ResolveInfo resolvedIntentInfo : resolvedIntentActivities) {
                    String packageName = resolvedIntentInfo.activityInfo.packageName;

                    grantUriPermission(packageName, Uri.fromFile(f), Intent.FLAG_GRANT_WRITE_URI_PERMISSION | Intent.FLAG_GRANT_READ_URI_PERMISSION);
                }
                takePictureIntent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
                startActivityForResult(takePictureIntent, ACTION_TAKE_PHOTO);
            }

完成时处理图像：

    @Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == ACTION_TAKE_PHOTO && resultCode == Activity.RESULT_OK) {
        handleCameraPhoto();
    }
}

我不明白为什么它只是4.4.4的问题，而不是其他操作系统。

当出现崩溃时，它并没有说我的应用程序崩溃了，它说Camera已经停止工作了，并且我只能在没有过滤器的情况下查看日志时查看崩溃，这意味着崩溃不在我的应用程序中？

Answer 1

根据@mikem的注释，我使用uri.fromfile(file)而不是使用fileprovider来获取URI。

是这样做的：

grantUriPermission(packageName, Uri.fromFile(f), Intent.FLAG_GRANT_WRITE_URI_PERMISSION | Intent.FLAG_GRANT_READ_URI_PERMISSION);

当我本该这么做的时候：

grantUriPermission(packageName, FileProvider.getUriForFile(PhotoActivity.this, BuildConfig.APPLICATION_ID + ".provider", f), Intent.FLAG_GRANT_WRITE_URI_PERMISSION | Intent.FLAG_GRANT_READ_URI_PERMISSION);