Android Fail to connect to camera service

Question

When the user click on Camera, it open next screen after few seconds it throws Fail to connect to camera service

and it say cannot connect to ca

Answer 1

you have to unlock camera before getting preview display and lock camera properly before closing your app. If the camera is not locked properly, next time your app may throw exception. So that, you have to reboot your device...

Answer 2

You forgot something in your manifest, look here Camera Class

Add this to your manifest:

 <uses-permission android:name="android.permission.CAMERA" />
 <uses-feature android:name="android.hardware.camera" />
 <uses-feature android:name="android.hardware.camera.autofocus" />

Hope it helps!

Answer 3

Here's my application code -- hope it helps:

public class CameraActivity extends Activity {
    ImageView img_logo;
    public static Bitmap bitmap;
    public static  String selectedImagePath="";
    protected boolean _taken;   
    protected static final String PHOTO_TAKEN   = "photo_taken";
    int count = 0;
    static String image1 = "";
    /*static String _path="";
    Bitmap bita;
    ParsingForCabDetails obj_ParsingForCabDetails;
    InputStream is;
    protected boolean _taken;   
    protected static final String PHOTO_TAKEN = "photo_taken";*/
    ProgressDialog pd;
    //ImageView iv;
    Button cancel,Ok;
    String alert="";
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.camera);

        img_logo = (ImageView) findViewById(R.id.camera_image);
        cancel = (Button) findViewById(R.id.camera_taken);
        upload = (Button) findViewById(R.id.camerabtnupload);

        if(image1.length()<= 0)
        startCameraActivity();

        upload.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {
                finish();
                if(image1.length() > 0){
                pd = ProgressDialog.show(SmallyTaxiTabbar.tabContext, "", "Loading....");
                new Thread(new Runnable() {

                        public void run() {

                            LoardServer();
                            handler.sendEmptyMessage(0);

                        }
                    }).start();

            }
                else
                    Toast.makeText(getApplicationContext(),"No Capture Image",2000).show();
            }


        });
        img_logo.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {
                // TODO Auto-generated method stub
                startCameraActivity();  
            }
        });

        cancel.setOnClickListener(new OnClickListener() {

            public void onClick(View v) {
                finish();
                selectedImagePath= "";
                image1="";
                }
        });


    }


    public void LoardServer() {
    // this is use for upload image or save image   

    }


    private Handler handler = new Handler(){
        public void handleMessage(android.os.Message msg) {
            pd.dismiss();
            finish();
            if(alert.length() >0 ){
                Log.d("hello","alert"+alert);
                Toast.makeText(getApplicationContext(),alert, 2000).show();
            }
            else
                FindCabDetails.iv_camera.setImageBitmap(bitmap);

            selectedImagePath= "";
            image1="";

        };
    };
    protected void startCameraActivity() {
        selectedImagePath = Environment.getExternalStorageDirectory() + "/default"+count+".jpg";
        count++;
        File file = new File(selectedImagePath);
        Uri outputFileUri = Uri.fromFile(file);
        Intent intent = new Intent (android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
        intent.putExtra(MediaStore.EXTRA_OUTPUT, outputFileUri);
        startActivityForResult(intent, 0);
        }
        @Override
        protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        switch (resultCode) {
        case -1:
        onPhotoTaken();
        break;
        }
        }
        protected void onPhotoTaken() {
        _taken = true;
        bitmap = BitmapFactory.decodeFile(selectedImagePath);
        bitmap = decodeFile();
        image1 = selectedImagePath;
        img_logo.setImageBitmap(bitmap);

        }
        @Override
        protected void onRestoreInstanceState(Bundle savedInstanceState) {
        if (savedInstanceState.getBoolean(PHOTO_TAKEN)) {
        onPhotoTaken();
        }
        }
        @Override
        protected void onSaveInstanceState(Bundle outState) {
        outState.putBoolean(PHOTO_TAKEN, _taken);
        }
        private Bitmap decodeFile() {
        try {
        // decode image size
        BitmapFactory.Options o = new BitmapFactory.Options();
        o.inJustDecodeBounds = true;
        BitmapFactory.decodeStream(new FileInputStream( selectedImagePath), null, o);
        final int REQUIRED_SIZE = 70;
        int width_tmp = o.outWidth, height_tmp = o.outHeight;
        int scale = 1;
        while (true) {
        if (width_tmp / 2 < REQUIRED_SIZE
        || height_tmp / 2 < REQUIRED_SIZE)
        break;
        width_tmp /= 2;
        height_tmp /= 2;
        scale++;
        }
        // decode with inSampleSize
        BitmapFactory.Options o2 = new BitmapFactory.Options();
        o2.inSampleSize = scale;
        return BitmapFactory.decodeStream(new FileInputStream(selectedImagePath), null, o2);
        } catch (FileNotFoundException e) {
        }
        return null;
        }
        public boolean onKeyDown(int keyCode, KeyEvent event) {
            if(keyCode==KeyEvent.KEYCODE_BACK)
            {
                finish();
            }
            return super.onKeyDown(keyCode, event);
        }

}

Use this camera.xml

 <?xml version="1.0" encoding="utf-8"?>
    <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
        android:orientation="vertical" android:background="#FFFFFF" android:layout_height="fill_parent" android:layout_width="fill_parent">
        <RelativeLayout android:id="@+id/relativeLayout1"
            android:layout_width="fill_parent"
            android:background="@drawable/bottoombg" android:layout_height="wrap_content">
            <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerVertical="true"
                android:layout_centerHorizontal="true" android:textColor="#FBB917"
                android:textStyle="bold" android:textSize="20dip" android:id="@+id/txtCabNametitle" android:text="Camera"></TextView>
            <Button android:layout_alignParentRight="true" android:layout_centerVertical="true"
                android:background="@drawable/filter_btn1"
                android:layout_marginRight="5dip"
                android:layout_height="30dip" android:textColor="#FFFFFF" android:text="Upload" android:layout_width="70dip" android:id="@+id/camerabtnupload"></Button>
            <Button android:layout_centerVertical="true" android:background="@drawable/btn_press_effect" android:layout_height="30dip" android:textColor="#FFFFFF" android:paddingLeft="10dip" android:id="@+id/camera_taken" android:text="Cancel" android:layout_width="70dip"></Button>
        </RelativeLayout>
        <ImageView android:id="@+id/camera_image" android:layout_centerVertical="true" android:layout_centerHorizontal="true" android:layout_height="200dip" android:layout_width="200dip"></ImageView>
    </RelativeLayout>

AndroidManifest.xml

 <uses-permission android:name="android.permission.CAMERA" />
 <uses-feature android:name="android.hardware.camera" />
 <uses-feature android:name="android.hardware.camera.autofocus" />