我开始使用文件提供程序捕获凸轮图像。我的片段根据与take image simply相关的android文档调用cam捕获意图。
问题出在onActivityResult
方法意图返回null。这是我如何设置一切。我无法弄清楚我做错了什么。
的AndroidManifest.xml
<provider
android:name="android.support.v4.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_path" />
</provider>
file_path.xml
<paths>
<external-files-path name="my_images" />
</paths>
在 Fragment.class
中实现camcapture意图 Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
File photoFile = null;
try {
photoFile = Utils.createImageFile(getContext());
String authorities = context.getPackageName()+".fileprovider";
uriForFile = FileProvider.getUriForFile(context, authorities, photoFile);
} catch (IOException e) {
e.printStackTrace();
}
Log.d(TAG, "handleCaptureImage: "+uriForFile); // shows this result in logs content://appid.fileprovider/my_images/Pictures/JPEG_20170918_181145_719404055.jpg
intent.putExtra(MediaStore.EXTRA_OUTPUT, uriForFile);
startActivityForResult(intent, OPEN_CAMERA);
片段中的onActivityResult
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK) {
if (requestCode == PICK_IMAGE) {
try {
//works fine bitmap generated correctly.
Bitmap bitmap = MediaStore.Images.Media.getBitmap(getActivity().getContentResolver(), data.getData());
} catch (IOException e) {
e.printStackTrace();
}
} else if (requestCode == OPEN_CAMERA) {
Log.d(TAG, "onActivityResult: "+data); //data always null
}
}
}
我尝试在托管活动中调用onActivityResult(),但结果相同。需要指向正确的方向..提前谢谢你。
答案 0 :(得分:0)
这会有所帮助 data in onActivityResult is null
如果data.getData()返回null,则尝试:
Bundle extras = data.getExtras();
Bitmap bitmap = (Bitmap) extras.get("data");
希望有所帮助:)