I've been trying to start a really simple camera intent. So I went through a turorial, did all the functions, but when I press the button I get null pointer exception.
This is my code:
package vidas.shay.mobilebridgetask;
import android.app.Activity;
import android.app.Fragment;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.support.annotation.Nullable;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ImageView;
import android.widget.Switch;
import android.widget.Toast;
import java.io.File;
import java.text.SimpleDateFormat;
import java.util.Date;
/**
* Created by pitsponet on 26/03/2015.
*/
public class userDetailesTopFragment extends Fragment implements View.OnClickListener {
//text views
EditText firstNameTextView;
EditText lastNameTextView;
EditText emailTextView;
EditText phoneNumberTextView;
EditText adressTextView;
Button addImageButton;
Button addHobbiesButton;
Switch statusSwitch;
ImageView userProfileImageView;
Button findMyFriendsButton;
Button updateMyLocationButton;
Button usersListButton;
public static final int MEDIA_TYPE_IMAGE = 1;
public static final int MEDIA_TYPE_VIDEO = 2;
private static final int CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE = 100;
private static final int CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE = 200;
private Uri fileUri;
@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View v = inflater.inflate(R.layout.user_detailes_top_fragment_layout, container, false);
//v.findViewById(R.id.BT_addImageToProfile).setOnClickListener(this);
addImageButton = (Button) v.findViewById(R.id.BT_addImageToProfile);
addImageButton.setOnClickListener(this);
return v;
}
@Override
public void onClick(View v) {
Log.d("here", "here ?");
if (v == addImageButton) {
startCamera();
}
}
private void startCamera() {
// create Intent to take a picture and return control to the calling application
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
fileUri = getOutputMediaFileUri(MEDIA_TYPE_IMAGE); // create a file to save the image
intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri); // set the image file name
// start the image capture Intent
startActivityForResult(intent, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);
}
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE) {
if (resultCode == Activity.RESULT_OK) {
// Image captured and saved to fileUri specified in the Intent
Toast.makeText(getActivity(), "Image saved to:\n" +
data.getData(), Toast.LENGTH_LONG).show();
} else if (resultCode == Activity.RESULT_CANCELED) {
// User cancelled the image capture
} else {
// Image capture failed, advise user
}
}
if (requestCode == CAPTURE_VIDEO_ACTIVITY_REQUEST_CODE) {
if (resultCode == Activity.RESULT_OK) {
// Video captured and saved to fileUri specified in the Intent
Toast.makeText(getActivity(), "Video saved to:\n" + data.getData(), Toast.LENGTH_LONG).show();
//Toast.makeText(getActivity(),"Text!",Toast.LENGTH_SHORT).show();
} else if (resultCode == Activity.RESULT_CANCELED) {
// User cancelled the video capture
} else {
// Video capture failed, advise user
}
}
}
/**
* Create a file Uri for saving an image or video
*/
private static Uri getOutputMediaFileUri(int type) {
return Uri.fromFile(getOutputMediaFile(type));
}
/**
* Create a File for saving an image or video
*/
private static File getOutputMediaFile(int type) {
// To be safe, you should check that the SDCard is mounted
// using Environment.getExternalStorageState() before doing this.
File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(
Environment.DIRECTORY_PICTURES), "MyCameraApp");
// This location works best if you want the created images to be shared
// between applications and persist after your app has been uninstalled.
// Create the storage directory if it does not exist
if (!mediaStorageDir.exists()) {
if (!mediaStorageDir.mkdirs()) {
Log.d("MyCameraApp", "failed to create directory");
return null;
}
}
// Create a media file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
File mediaFile;
if (type == MEDIA_TYPE_IMAGE) {
mediaFile = new File(mediaStorageDir.getPath() + File.separator +
"IMG_" + timeStamp + ".jpg");
} else if (type == MEDIA_TYPE_VIDEO) {
mediaFile = new File(mediaStorageDir.getPath() + File.separator +
"VID_" + timeStamp + ".mp4");
} else {
return null;
}
return mediaFile;
}
}
This is the error I get:
03-27 15:13:28.620 3042-3042/vidas.shay.mobilebridgetask E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: vidas.shay.mobilebridgetask, PID: 3042
java.lang.NullPointerException: file
at android.net.Uri.fromFile(Uri.java:447)
at vidas.shay.mobilebridgetask.userDetailesTopFragment.getOutputMediaFileUri(userDetailesTopFragment.java:130)
at vidas.shay.mobilebridgetask.userDetailesTopFragment.startCamera(userDetailesTopFragment.java:87)
at vidas.shay.mobilebridgetask.userDetailesTopFragment.onClick(userDetailesTopFragment.java:75)
at android.view.View.performClick(View.java:4756)
at android.view.View$PerformClick.run(View.java:19749)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5221)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
