Android camera: when capturing image target, image returns null
I am using a button that will call the device camera.
private void captureImage() {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
fileUri = getOutputMediaFileUri(ImageUtils.MEDIA_TYPE_IMAGE);
intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
// start the image capture Intent
startActivityForResult(intent, CAMERA_CAPTURE_IMAGE_REQUEST_CODE);
}
public Uri getOutputMediaFileUri(int type) {
item = ImageUtils.getOutputMediaFile(type, getActivity());
return item.getIcon();
}
and the getOutputMediaFile () method,
public static ImageItem getOutputMediaFile(int type, Activity activity) {
// External sdcard location
File mediaStorageDir = new File(
Environment
.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES),
IMAGE_DIRECTORY_NAME);
// Create the storage directory if it does not exist
if (!mediaStorageDir.exists()) {
if (!mediaStorageDir.mkdirs()) {
Log.d(IMAGE_DIRECTORY_NAME, "Oops! Failed create "
+ IMAGE_DIRECTORY_NAME + " directory");
return null;
}
}
// Create a media file name
Date date = new Date();
String timeStamp = CommonUtils.dateToString(date, "yyyyMMddHHmmss");
String dateString = CommonUtils.dateToString(date,
"yyyy/MM/dd HH:mm:ss");
File mediaFile;
if (type == MEDIA_TYPE_IMAGE) {
mediaFile = new File(mediaStorageDir.getPath() + File.separator
+ "IMG_" + timeStamp + ".jpg");
}
else {
return null;
}
ImageItem item = new ImageItem();
item.setId(timeStamp);
item.setmIcon(Uri.fromFile(mediaFile));
item.setDate(dateString);
item.setmSpans(1);
// save image in on activity result
return item;
}
on the same activity i call the OnActivityResult method on the image result,
public void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == CAMERA_CAPTURE_IMAGE_REQUEST_CODE
&& resultCode == RESULT_OK) {
String[] fileColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getActivity().getContentResolver().query(fileUri,
fileColumn, null, null, null);
String contentPath = null;
if (cursor.moveToFirst()) {
contentPath = cursor.getString(cursor
.getColumnIndex(fileColumn[0]));
horseImage.setImageBitmap(ImageManager
.getImage(new ImageManagerRequest(contentPath)));
} else if (resultCode == RESULT_CANCELED) {
Toast.makeText(getActivity(), "Capture Cancelled",
Toast.LENGTH_LONG).show();
} else {
Toast.makeText(getActivity(), "Capture failed",
Toast.LENGTH_LONG).show();
}
}
}
I got the following error log when running this code.
09-24 19:17:10.250: E/AndroidRuntime(16995): FATAL EXCEPTION: main
09-24 19:17:10.250: E/AndroidRuntime(16995): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=198496, result=-1, data=null} to activity {com.eyepax.horseapp/com.eyepax.horseapp.ui.activities.MainActivity}: java.lang.NullPointerException
09-24 19:17:10.250: E/AndroidRuntime(16995): at android.app.ActivityThread.deliverResults(ActivityThread.java:3141)
09-24 19:17:10.250: E/AndroidRuntime(16995): at android.app.ActivityThread.handleSendResult(ActivityThread.java:3184)
09-24 19:17:10.250: E/AndroidRuntime(16995): at android.app.ActivityThread.access$1100(ActivityThread.java:130)
09-24 19:17:10.250: E/AndroidRuntime(16995): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1243)
09-24 19:17:10.250: E/AndroidRuntime(16995): at android.os.Handler.dispatchMessage(Handler.java:99)
09-24 19:17:10.250: E/AndroidRuntime(16995): at android.os.Looper.loop(Looper.java:137)
09-24 19:17:10.250: E/AndroidRuntime(16995): at android.app.ActivityThread.main(ActivityThread.java:4745)
09-24 19:17:10.250: E/AndroidRuntime(16995): at java.lang.reflect.Method.invokeNative(Native Method)
09-24 19:17:10.250: E/AndroidRuntime(16995): at java.lang.reflect.Method.invoke(Method.java:511)
09-24 19:17:10.250: E/AndroidRuntime(16995): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
09-24 19:17:10.250: E/AndroidRuntime(16995): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
09-24 19:17:10.250: E/AndroidRuntime(16995): at dalvik.system.NativeStart.main(Native Method)
09-24 19:17:10.250: E/AndroidRuntime(16995): Caused by: java.lang.NullPointerException
09-24 19:17:10.250: E/AndroidRuntime(16995): at com.eyepax.horseapp.ui.activities.AddHorseBasicInfo.onActivityResult(AddHorseBasicInfo.java:270)
09-24 19:17:10.250: E/AndroidRuntime(16995): at android.support.v4.app.FragmentActivity.onActivityResult(FragmentActivity.java:167)
09-24 19:17:10.250: E/AndroidRuntime(16995): at android.app.Activity.dispatchActivityResult(Activity.java:5192)
09-24 19:17:10.250: E/AndroidRuntime(16995): at android.app.ActivityThread.deliverResults(ActivityThread.java:3137)
09-24 19:17:10.250: E/AndroidRuntime(16995): ... 11 more
fileUri is a global variable. I go through a lot of examples but I can't seem to solve my problem. many examples give this origin due to Intent data getting null.then i change onActivityResult as it should but then it escapes.
if (requestCode == CAMERA_CAPTURE_IMAGE_REQUEST_CODE && resultCode == RESULT_OK
&& null != data) {}
help me solve this problem.
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2 answers
Image Uri should be contained in data.getData () in onActivityResult
In an old project, I also use this:
public static Uri getLastPhoto(Context context) {
String[] columns = {MediaStore.MediaColumns.DATA, MediaStore.MediaColumns.DATE_ADDED};
ContentResolver cr = context.getContentResolver();
Cursor cursor = cr.query(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, columns, null, null,
MediaStore.MediaColumns.DATE_ADDED + " DESC");
int columnIndex = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
String path = cursor.getString(columnIndex);
cursor.close();
return Uri.fromFile(new File(path));
}
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This happens in many devices. This is due to some OS issues. It's better if you pass in the name of the image you want to save and extract it using that.
capturedImagePath = MyApplication.cameraImageDirectory + "/camera"
+ num + ".png";
File mFileTemp = new File(capturedImagePath);
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
try {
Uri mImageCaptureUri = null;
String state = Environment.getExternalStorageState();
mImageCaptureUri = Uri.fromFile(mFileTemp);
intent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT,
mImageCaptureUri);
intent.putExtra("return-data", true); //$NON-NLS-1$
startActivityForResult(intent, REQUEST_CODE_TAKE_PICTURE);
} catch (ActivityNotFoundException e) {
Log.d("camera fieldtip", "cannot take picture", e); //$NON-NLS-1$
}
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