I have implemented an android camera with the help of official developer.android.com tutorial. The app is working fine sometimes but about 3/5 of times the preview of the camera freezes after some rotation and clicking the buttons or even without these works (other elements don't freeze). The cutest part is that when I debug the application the preview doesn't stuck but when I want to run the app normally sometimes the problem happens.
Here is my fullScreen Class which is consist of the codes that android studio generated for fullScreen activity and the codes for implementing surfaceHolder.Callback and camera stuff.
public class CameraActivity extends Activity implements SurfaceHolder.Callback {
... // some constants here
private Camera mCamera;
private SurfaceHolder mHolder;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_camera);
SurfaceView cameraSufaceView = (SurfaceView) findViewById(R.id.camera_preview);
// Accessing front camera to take picture
mCamera = openFrontFacingCameraGingerbread();
if (mCamera != null) {
// Install a SurfaceHolder.Callback so we get notified when the
// underlying surface is created and destroyed.
mHolder = cameraSufaceView.getHolder();
mHolder.addCallback(this);
} else {
// Alter user
}
/**
* Gets an instance of front facing camera if available
*/
#SuppressWarnings("deprecation")
private Camera openFrontFacingCameraGingerbread() {
int cameraCount;
Camera cam = null;
Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
cameraCount = Camera.getNumberOfCameras();
for (int camIdx = 0; camIdx < cameraCount; camIdx++) {
Camera.getCameraInfo(camIdx, cameraInfo);
if (cameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
try {
cam = Camera.open(camIdx);
} catch (RuntimeException e) {
Log.e(TAG, "Camera failed to open: " + e.getLocalizedMessage());
}
}
}
return cam;
}
#Override
public void surfaceCreated(SurfaceHolder holder) {
// The Surface has been created, now tell the camera where to draw the preview.
try {
mCamera.setPreviewDisplay(holder);
mCamera.startPreview();
} catch (IOException e) {
Log.d(TAG, "Error setting camera preview: " + e.getMessage());
}
}
#Override
public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
// If your preview can change or rotate, take care of those events here.
// Make sure to stop the preview before resizing or reformatting it.
if (mHolder.getSurface() == null) {
// preview surface does not exist
return;
}
// stop preview before making changes
try {
mCamera.stopPreview();
} catch (Exception e) {
// ignore: tried to stop a non-existent preview
}
// start preview with new settings
try {
// mCamera.setDisplayOrientation(needs degree here);
mCamera.setPreviewDisplay(mHolder);
mCamera.startPreview();
} catch (Exception e) {
Log.d(TAG, "Error starting camera preview: " + e.getMessage());
}
}
#Override
public void surfaceDestroyed(SurfaceHolder holder) {
releaseCamera();
}
#Override
protected void onPause() {
super.onPause();
releaseCamera();
}
#Override
protected void onResume() {
super.onResume();
if (mCamera == null)
mCamera = openFrontFacingCameraGingerbread();
}
private void releaseCamera() {
if (mCamera != null) {
mCamera.stopPreview();
mCamera.release(); // release the camera for other applications
mCamera = null;
}
}
When this problem happens some errors appear in the LogCat but they are not really informative. here are they:
26893-26893/com.naviiid.retinaflash E/art﹕ No implementation found for void java.lang.Runtime.appStartupEnd() (tried Java_java_lang_Runtime_appStartupEnd and Java_java_lang_Runtime_appStartupEnd__)
09-16 01:34:09.336 26893-26893/com.naviiid.retinaflash E/ActivityThread﹕ appStartupEnd :
java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java)
at android.app.ActivityThread.appStartupEnd(ActivityThread.java:305)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2819)
at android.app.ActivityThread.access$900(ActivityThread.java:177)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1448)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:5942)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java)
Caused by: java.lang.UnsatisfiedLinkError: No implementation found for void java.lang.Runtime.appStartupEnd() (tried Java_java_lang_Runtime_appStartupEnd and Java_java_lang_Runtime_appStartupEnd__)
at java.lang.Runtime.appStartupEnd(Native Method)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java)
at android.app.ActivityThread.appStartupEnd(ActivityThread.java:305)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2819)
at android.app.ActivityThread.access$900(ActivityThread.java:177)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1448)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:5942)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java)
The only clue that I have found so far is that sometimes android calls onPause method even if the activity isn't paused. For getting instance of the camera again I call openFrontFacingCameraGingerbread() in onResume method.
Related
I am creating an Android app and need a feature that takes photos without user interaction.
I simply want a class, for example, 'CameraService.java' that has a constructor that takes camera settings (eg. quality, res, etc) and a public function called 'takePhoto' which returns the image via type bitmap. I have been searching for a while to find out how I can do this using the Camera API 2 but have failed every time.
Most of the exemplars for doing this requires the camera to be made inside the MainActivity or in a class that extends Activity (I want to try to avoid this).
CameraService.java
I have utilized the following code found in a StackOverflow post (referenced below) which only saves the image to a hardcoded location (and uses Camera API 1) but I am experiencing errors.
package me.sam.camtest;
import android.hardware.Camera;
import android.util.Log;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
public class CameraService {
Camera mCamera;
private int quality;
public CameraService(int quality){
this.quality = quality;
}
private int findBackFacingCamera() {
int cameraId = -1;
int numberOfCameras = Camera.getNumberOfCameras();
for (int i = 0; i < numberOfCameras; i++) {
Camera.CameraInfo info = new Camera.CameraInfo();
Camera.getCameraInfo(i, info);
if (info.facing == Camera.CameraInfo.CAMERA_FACING_BACK) {
cameraId = i;
break;
}
}
return cameraId;
}
private boolean safeCameraOpen(int id) {
boolean qOpened = false;
try {
releaseCamera();
mCamera = Camera.open(id);
qOpened = (mCamera != null);
} catch (Exception e) {
e.printStackTrace();
}
return qOpened;
}
private void releaseCamera() {
if (mCamera != null) {
mCamera.release();
mCamera = null;
}
}
Camera.PictureCallback mCall = new Camera.PictureCallback() {
public void onPictureTaken(byte[] data, Camera camera) {
FileOutputStream outStream = null;
try {
outStream = new FileOutputStream("/sdcard/Image.jpg");
outStream.write(data);
outStream.close();
} catch (FileNotFoundException e){
Log.d("CAMERA", e.getMessage());
} catch (IOException e){
Log.d("CAMERA", e.getMessage());
}
}
};
public void takePhoto(){
// Should return bitmap in future
int back_cam = findBackFacingCamera();
if(back_cam != -1){
safeCameraOpen(1);
mCamera.startPreview();
mCamera.takePicture(null, null, mCall);
}
}
}
Runtime Error:
E/AndroidRuntime: FATAL EXCEPTION: main
Process: me.sam.camtest, PID: 985
java.lang.RuntimeException: Unable to start activity ComponentInfo{me.sam.camtest/me.sam.camtest.MainActivity}: java.lang.RuntimeException: takePicture failed
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2778)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2856)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:440)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
Caused by: java.lang.RuntimeException: takePicture failed
at android.hardware.Camera.native_takePicture(Native Method)
at android.hardware.Camera.takePicture(Camera.java:1588)
at android.hardware.Camera.takePicture(Camera.java:1530)
at me.sam.camtest.CameraService.takePhoto(CameraService.java:74)
at me.sam.camtest.Reply.<init>(Reply.java:47)
at me.sam.camtest.MainActivity.onCreate(MainActivity.java:80)
at android.app.Activity.performCreate(Activity.java:6999)
at android.app.Activity.performCreate(Activity.java:6990)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1214)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2731)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2856)
at android.app.ActivityThread.-wrap11(Unknown Source:0)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1589)
at android.os.Handler.dispatchMessage(Handler.java:106)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:440)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
I researched this error and it seemed that people could only fix it by adding a Surface View which required the CameraService to be an activity or passed a context (not what I want).
In conclusion, How could I achieve the following:
Have a simple camera class that has one public method, "takePhoto" which
returns a bitmap
Avoid extending Activity or passing contexts in the simple camera class
Take the photo without user interaction (eg: intents)
PS: I am very new to the StackOverFlow community, I have tried to follow the guidelines with my best ability, please don't hate too much :)
My research:
https://androidmyway.wordpress.com/2012/09/07/capture-image/
How to take pictures in android application without the user Interface..?
http://www.41post.com/3794/programming/android-take-a-picture-without-displaying-a-preview
I have the following code which uses a VideoView and MediaController:
FrameLayout frameLayout = findViewById(R.id.frameLayout);
VideoView videoView = findViewById(R.id.videoView);
mediaController = new MediaController(this) {
#Override
public void hide() {
// do not hide
}
public boolean dispatchKeyEvent(KeyEvent event) {
if (event.getKeyCode() == KeyEvent.KEYCODE_BACK && event.getAction() == KeyEvent.ACTION_UP) {
((Activity) getContext()).finish();
}
return super.dispatchKeyEvent(event);
}
};
mediaController.setAnchorView(frameLayout);
videoView.setMediaController(mediaController);
videoView.setVideoPath("android.resource://" + getPackageName() + "/" + R.raw.meditation);
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
public void run() {
mediaController.show(0);
}
}, 100);
The problem is when the activity finishes, I get the following error in my log:
10-28 05:57:16.075 6535-6535/com.kjdion.anxietynow E/WindowManager:
android.view.WindowLeaked: Activity
com.kjdion.anxietynow.MeditationActivity has leaked window
DecorView#13fd277[] that was originally added here
at android.view.ViewRootImpl.(ViewRootImpl.java:485)
at
android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:346)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:93)
at android.widget.MediaController.show(MediaController.java:364)
at
com.kjdion.anxietynow.MeditationActivity$2.run(MeditationActivity.java:53)
at android.os.Handler.handleCallback(Handler.java:790)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:164)
at android.app.ActivityThread.main(ActivityThread.java:6494)
at java.lang.reflect.Method.invoke(Native Method)
at
com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:438)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:807)
Despite this error, everything works perfectly.
Why is this happening and how do I fix it?
This is because you override the hide method of the controller so that it doesn't hide. Remove that if you can and the code should work fine.
Following code uses to get jpeg-photo from camera
public void getPhoto(final PictureCallback callback, final Runnable focusFailCallback) {
if(!Camera.Parameters.FOCUS_MODE_FIXED.equals(mCamera.getParameters().getFocusMode()) &&
!Camera.Parameters.FOCUS_MODE_INFINITY.equals(mCamera.getParameters().getFocusMode())) {
mCamera.autoFocus(new AutoFocusCallback() {
#Override
public void onAutoFocus(boolean success, Camera camera) {
if(success) {
camera.takePicture(null, null, null, callback);
} else {
camera.cancelAutoFocus();
focusFailCallback.run();
}
}
});
} else {
mCamera.takePicture(null, null, null, callback);
}
}
Mostly it works fine. It calls between startPreview and stopPreview calls, so I have not problems about that. But at random moments it can throw exception.
java.lang.RuntimeException: takePicture failed
android.hardware.Camera.native_takePicture(Native Method)
android.hardware.Camera.takePicture(Camera.java:1828)
org.opencv.android.JavaCameraView$2.onAutoFocus(JavaCameraView.java:463)
android.hardware.Camera$EventHandler.handleMessage(Camera.java:1273)
android.os.Handler.dispatchMessage(Handler.java:111)
android.os.Looper.loop(Looper.java:194)
android.app.ActivityThread.main(ActivityThread.java:5534)
java.lang.reflect.Method.invoke(Native Method)
java.lang.reflect.Method.invoke(Method.java:372)
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:955)
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:750)
I have no idea what could happen that I didn't provide for.
I had the same issue on a Moto E3 and some other devices and calling cancelAutoFocus right before camera.takePicture made the crash disappear.
I'm using two activities, the main one, and the camera one. In the mainActivity i call startActivity(new Intent(this, CameraActivity));
Now, when camera activity starts, the onCreate() is:
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.camera_preview);
View myView= (View) findViewById(R.id.camera_previeww);
myView.setSystemUiVisibility(View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);
cameraID= Camera.CameraInfo.CAMERA_FACING_FRONT;
mCamera=openCamera(cameraID);
mCamera.startPreview();
IntentFilter filter = new IntentFilter();
filter.addAction(Tabbed.BROADCAST_ACTION_TABBED);
LocalBroadcastManager bm = LocalBroadcastManager.getInstance(this);
bm.registerReceiver(mBroadcastReceiver, filter);
// Create our Preview view and set it as the content of our activity.
mPreview = new CameraPreview(this, mCamera);
FrameLayout preview = (FrameLayout) this.findViewById(R.id.camera_previeww);
preview.addView(mPreview);
}
The openCamera(int cameraID) method is:
public Camera openCamera(int cameraIDD){
Camera c=null;
try{
c=Camera.open(cameraIDD);
}catch (Exception e){
Log.d("Camera Activity", e.getMessage());
}
return c;
}
Also I'm using a BroadcastReceiver like:
private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
byte [] data=new byte[3];
if (intent.getAction().equals(Tabbed.BROADCAST_ACTION_TABBED)) {
data = intent.getByteArrayExtra(Tabbed.EXTRA_PARAM_BYTE);
}
if (data[FINGER]==MIDDLE_FINGER && data[TYPE]==SINGLE_TAP){
//switchCamera();
//releaseCamera();
//mCamera=Camera.open();
}
else if (data[FINGER]==MIDDLE_FINGER && data[TYPE]==DOUBLE_TAP){
// HAVE TO GO BACK
kill_activity();
}
else if (data[FINGER]==INDEX_FINGER && data[TYPE]==SINGLE_TAP){
mCamera.takePicture(null, null, mPicture);
}
// kill activity
}
};
And some other methods:
#Override
protected void onPause() {
super.onPause();
//releaseCamera(); // release the camera immediately on pause event
}
private void releaseCamera(){
if (mCamera != null){
mCamera.release(); // release the camera for other applications
mCamera = null;
}
}
void kill_activity()
{
mCamera.stopPreview();
mCamera.setPreviewCallback(null);
releaseCamera();
finish();
}
Here is the crash:
FATAL EXCEPTION: main
Process: com.etu.goglove, PID: 6008
java.lang.NullPointerException: Attempt to invoke virtual method 'void android.hardware.Camera.takePicture(android.hardware.Camera$ShutterCallback, android.hardware.Camera$PictureCallback, android.hardware.Camera$PictureCallback)' on a null object reference
at com.etu.goglove.CameraActivity$2.onReceive(CameraActivity.java:155)
at android.support.v4.content.LocalBroadcastManager.executePendingBroadcasts(LocalBroadcastManager.java:297)
at android.support.v4.content.LocalBroadcastManager.access$000(LocalBroadcastManager.java:46)
at android.support.v4.content.LocalBroadcastManager$1.handleMessage(LocalBroadcastManager.java:116)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:154)
at android.app.ActivityThread.main(ActivityThread.java:6119)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:886)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:776)
With all this, I'm trying to take a photo when I receive broadcast intents. So, after my activity has started, I open mCamera and when I receive an intent I make the photo or I get back. At the first time, i can take the photo and then I finish my activity. If i try to restart cameraActivity from the mainActivity, calling startActivity(intent),in the onCreate() camera is open and it is not null (checked with the debugger), but this time, when I get in the onReceive() method, mCamera is always null, so I get a null object reference on mCamera!(when I'm trying to do mCamera.takePicture()) don't know how ...
Thanks!
private BroadcastReceiver mBroadcastReceiver = new BroadcastReceiver() {
#Override
public void onReceive(Context context, Intent intent) {
byte [] data=new byte[3];
if (intent!=null && intent.getAction().equals(Tabbed.BROADCAST_ACTION_TABBED)) {
data = intent.getByteArrayExtra(Tabbed.EXTRA_PARAM_BYTE);
if (data[FINGER]==MIDDLE_FINGER && data[TYPE]==SINGLE_TAP){
//switchCamera();
//releaseCamera();
//mCamera=Camera.open();
}
else if (data[FINGER]==MIDDLE_FINGER && data[TYPE]==DOUBLE_TAP){
// HAVE TO GO BACK
kill_activity();
}
else if (data[FINGER]==INDEX_FINGER && data[TYPE]==SINGLE_TAP){
mCamera.takePicture(null, null, mPicture);
}
}
// kill activity
}
};
im trying to run a Camera Service in the Background, as soon after the Service has started i get an error takePicture failed. I'm new to Android,new to Stackoverflow and also not a good programmer.
I've added the right permissions and the service has been declared in the manifest file too.
package com.example.nevii.camera;
import android.app.Service;
import android.content.Intent;
import android.hardware.Camera;
import android.hardware.Camera.Parameters;
import android.os.IBinder;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.widget.Toast;
import java.io.IOException;
public class CameraService extends Service
{
//Camera variables
//a surface holder
private SurfaceHolder sHolder;
//a variable to control the camera
private Camera mCamera;
//the camera parameters
private Parameters parameters;
private boolean safeToTakePicture = false;
/** Called when the activity is first created. */
#Override
public void onCreate()
{
super.onCreate();
}
#Override
public int onStartCommand(Intent intent, int flags, int startId) {
// TODO Auto-generated method stub
super.onStartCommand(intent, flags, startId);
Toast.makeText(getBaseContext(), "onStartCommand", Toast.LENGTH_SHORT).show();
mCamera = Camera.open(1);
mCamera.setDisplayOrientation(90);
SurfaceView sv = new SurfaceView(getApplicationContext());
try {
mCamera.setPreviewDisplay(sv.getHolder());
parameters = mCamera.getParameters();
//set camera parameters
mCamera.setParameters(parameters);
mCamera.startPreview();
safeToTakePicture = true;
takePic();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
//stop the preview
mCamera.stopPreview();
mCamera.setPreviewCallback(null);
//release the camera
mCamera.release();
//unbind the camera from this object
mCamera = null;
}
//Get a surface
sHolder = sv.getHolder();
//tells Android that this surface will have its data constantly replaced
sHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
return START_STICKY;
}
public void takePic(){
Camera.PictureCallback mCall = new Camera.PictureCallback() {
public void onPictureTaken(byte[] data, Camera camera) {
//decode the data obtained by the camera into a Bitmap
MyCamera myCamera = new MyCamera();
myCamera.SavePicture(data);
//stop the preview
mCamera.stopPreview();
mCamera.setPreviewCallback(null);
//release the camera
mCamera.release();
//unbind the camera from this object
mCamera = null;
}
};
mCamera.takePicture(null, null, mCall);
Toast.makeText(getApplicationContext(),"Pic taken",Toast.LENGTH_LONG).show();
}
#Override
public IBinder onBind(Intent intent) {
// TODO Auto-generated method stub
return null;
}
}
I got the SourceCode from here:http://androideasylessons.blogspot.ch/2012/09/capture-image-without-surface-view-as.html
In the MainActivity i started the Service using:
startService(new Intent(this, CameraService.class));
myCamera.SavePicture is just an Asynchtask, which saves the Picture, i don't think there's a problem with that.
I hope you guys can help me.
Happy Coding!
UPDATE Logcat Error:
03-03 09:04:46.150 27530-27530/com.example.nevii.videocam D/Camera﹕ app passed NULL surface
03-03 09:04:46.153 27530-27530/com.example.nevii.videocam D/AndroidRuntime﹕ Shutting down VM
03-03 09:04:46.154 27530-27530/com.example.nevii.videocam E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.example.nevii.videocam, PID: 27530
java.lang.RuntimeException: Unable to start service com.example.nevii.videocam.CameraService#3f53f37f with Intent { cmp=com.example.nevii.videocam/.CameraService }: java.lang.RuntimeException: takePicture failed
at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2881)
at android.app.ActivityThread.access$2100(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1376)
at android.os.Handler.dispatchMessage(Handler.java:102)
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)
Caused by: java.lang.RuntimeException: takePicture failed
at android.hardware.Camera.native_takePicture(Native Method)
at android.hardware.Camera.takePicture(Camera.java:1436)
at android.hardware.Camera.takePicture(Camera.java:1381)
at com.example.nevii.videocam.CameraService.takePic(CameraService.java:101)
at com.example.nevii.videocam.CameraService.onStartCommand(CameraService.java:57)
at android.app.ActivityThread.handleServiceArgs(ActivityThread.java:2864)
at android.app.ActivityThread.access$2100(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1376)
at android.os.Handler.dispatchMessage(Handler.java:102)
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)
just add SurfaceTexture st = new SurfaceTexture(MODE_PRIVATE); mCamera.setPreviewTexture(st);
before mCamera.startPreview();