使用Intent.ACTION_VIEW显示来自FileProvider的照片

<provider
    android:name="androidx.core.content.FileProvider"
    android:authorities="${applicationId}.fileprovider"
    android:exported="false"
    android:grantUriPermissions="true">
    <meta-data
        android:name="android.support.FILE_PROVIDER_PATHS"
        android:resource="@xml/file_paths" />
</provider>

<paths xmlns:android="http://schemas.android.com/apk/res/android">
    <external-path name="external_files" path="." />
</paths>

File photoFile = new File(getExternalFilesDir(Environment.DIRECTORY_PICTURES), "photo.jpg");

Uri photoUri = FileProvider.getUriForFile(this, getPackageName() + ".fileprovider", photoFile);
Intent intent = new Intent(Intent.ACTION_VIEW);
intent.setDataAndType(photoUri, "image/*");
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);

startActivity(intent);