In my application I need to use custom camera. There are two buttons on the screen "Keep Image" and "Retake Photo". The picture taken by the cam should be saved in the specified directory when I click on the "keep image" button. When I click on "retake photo" button the cam should be ready to take a new photo. I have searched for the same and I got a Stack overflow link and I tried to implement that in my app, but the problem is all the code for taking picture and saving picture is written in the same class. The picture taken will be automatically saved without even a button click. I want to change that. I have tried different ways but throwing errors.
Please help me...given below is my java code
public class CustomCameraDemo extends Activity {
private SurfaceView preview=null;
private SurfaceHolder previewHolder=null;
public Camera camera=null;
private boolean inPreview=false;
//ImageView image;
Bitmap bmp,itembmp;
static Bitmap mutableBitmap;
PointF start = new PointF();
PointF mid = new PointF();
float oldDist = 1f;
File imageFileName = null;
File imageFileFolder = null;
private MediaScannerConnection msConn;
Display d; int screenhgt,screenwdh;
ProgressDialog dialog;
Button save;
Button retake;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
// image=(ImageView)findViewById(R.id.image);
save=(Button)findViewById(R.id.Save);
retake=(Button)findViewById(R.id.Retake);
preview=(SurfaceView)findViewById(R.id.surface);
previewHolder=preview.getHolder();
previewHolder.addCallback(surfaceCallback);
previewHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
previewHolder.setFixedSize(getWindow().getWindowManager()
.getDefaultDisplay().getWidth(), getWindow().getWindowManager()
.getDefaultDisplay().getHeight());
save.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
}
});
retake.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
}
});
}
@Override public void onResume() {
super.onResume();
camera=Camera.open();
}
@Override public void onPause() {
if (inPreview) {
camera.stopPreview(); }
camera.release();
camera=null;
inPreview=false;
super.onPause();
}
private Camera.Size getBestPreviewSize(int width, int height,Camera.Parameters parameters){
Camera.Size result=null;
for (Camera.Size size : parameters.getSupportedPreviewSizes())
{
if (size.width<=width && size.height<=height)
{
if (result==null) {
result=size;
} else {
int resultArea=result.width*result.height;
int newArea=size.width*size.height;
if (newArea>resultArea) {
result=size;
}
}
}
}
return(result);
}
SurfaceHolder.Callback surfaceCallback=new SurfaceHolder.Callback(){
public void surfaceCreated(SurfaceHolder holder) {
try {
camera.setPreviewDisplay(previewHolder);
} catch (Throwable t) {
Log.e("PreviewDemo-surfaceCallback",
"Exception in setPreviewDisplay()", t);
Toast.makeText(CustomCameraDemo.this, t.getMessage(), Toast.LENGTH_LONG).show();
}
}
public void surfaceChanged(SurfaceHolder holder,int format, int width,int height) {
Camera.Parameters parameters=camera.getParameters();
Camera.Size size=getBestPreviewSize(width, height,
parameters);
if (size!=null) {
parameters.setPreviewSize(size.width, size.height);
camera.setParameters(parameters);
camera.startPreview();
inPreview=true;
}
}
public void surfaceDestroyed(SurfaceHolder holder) {
}
};
Camera.PictureCallback photoCallback=new Camera.PictureCallback(){
public void onPictureTaken(final byte[] data, final Camera camera){
dialog=ProgressDialog.show(CustomCameraDemo.this,"","Saving Photo");
new Thread(){
public void run(){
try{
Thread.sleep(1000);
}
catch(Exception ex){}
onPictureTake(data,camera);
}
}.start();
}
};
public void onPictureTake(byte[] data, Camera camera){
bmp = BitmapFactory.decodeByteArray(data, 0, data.length);
mutableBitmap = bmp.copy(Bitmap.Config.ARGB_8888, true);
savePhoto(mutableBitmap);
dialog.dismiss();
}
class SavePhotoTask extends AsyncTask<byte[], String, String> {
@Override
protected String doInBackground(byte[]... jpeg) {
File photo=new File(Environment.getExternalStorageDirectory(),"photo.jpg");
if (photo.exists()){
photo.delete();
} try {
FileOutputStream fos=new FileOutputStream(photo.getPath());
fos.write(jpeg[0]);
fos.close();
} catch (java.io.IOException e) {
Log.e("PictureDemo", "Exception in photoCallback", e);
}
return(null);
}
}
public void savePhoto(Bitmap bmp) {
imageFileFolder = new File(Environment.getExternalStorageDirectory(),"MyMedicalRecords");
imageFileFolder.mkdir();
FileOutputStream out = null;
Calendar c = Calendar.getInstance();
String date = fromInt(c.get(Calendar.MONTH))+ fromInt(c.get(Calendar.DAY_OF_MONTH))
+ fromInt(c.get(Calendar.YEAR))
+ fromInt(c.get(Calendar.HOUR_OF_DAY))
+ fromInt(c.get(Calendar.MINUTE))
+ fromInt(c.get(Calendar.SECOND));
imageFileName = new File(imageFileFolder, date.toString() + ".jpg");
try { out = new FileOutputStream(imageFileName);
bmp.compress(Bitmap.CompressFormat.JPEG, 100, out);
out.flush(); out.close();
scanPhoto(imageFileName.toString());
out = null;
} catch (Exception e) { e.printStackTrace(); }
}
public String fromInt(int val) {
return String.valueOf(val);
}
public void scanPhoto(final String imageFileName) {
msConn = new MediaScannerConnection(CustomCameraDemo.this,new MediaScannerConnectionClient() {
public void onMediaScannerConnected() {
msConn.scanFile(imageFileName, null);
Log.i("msClient obj in Photo Utility","connection established");
}
public void onScanCompleted(String path, Uri uri) {
msConn.disconnect(); Log.i("msClient obj in Photo Utility","scan completed");
}
});
msConn.connect();
}
@Override
public boolean onKeyDown(int keyCode, KeyEvent event){ if (
keyCode == KeyEvent.KEYCODE_MENU&& event.getRepeatCount() == 0)
{
onBack();
}
return super.onKeyDown(keyCode, event);
}
public void onBack(){ Log.e("onBack :","yes");
camera.takePicture(null,null,photoCallback);
inPreview=false;
}
}
given below is my main layout
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent">
<android.view.SurfaceView
android:id="@+id/surface"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
/>
<Button android:layout_width="150dip"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:text="Keep Photo"
android:id="@+id/Save"></Button>
<TextView android:layout_below="@+id/surface"
android:layout_width="wrap_content"
android:id="@+id/textView1"
android:layout_height="wrap_content"
android:text=""
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true"></TextView>
<Button android:layout_width="150dip"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_toRightOf="@+id/textView1"
android:text="Retake Photo"
android:id="@+id/Retake"></Button> </RelativeLayout>
