Hi
i need help.i have created a camera application using android sdk
1.5.it works like this
when open the application you have to click a button named
"click" .When you click it camera will open and under the camera
preview(another layer) thier is an button called "Take Pictuer". When
you click the button camera takes the pictuer.it wokes fine to this
point.
I want to save the image in the Gallery in my dev phone 1. when i
open the Gallery it will show the image with the resolution i set.But
image has no pictuer and it is a black. no image is available
This is my code
package img.cam;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.OutputStream;
import android.app.Activity;
import android.content.ContentValues;
import android.content.Context;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Bitmap.CompressFormat;
import android.hardware.Camera;
import android.net.Uri;
import android.os.Bundle;
import android.provider.MediaStore;
import android.provider.MediaStore.Images;
import android.provider.MediaStore.Images.Media;
import android.util.Log;
import android.view.KeyEvent;
import android.view.SurfaceHolder;
import android.view.SurfaceView;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.LinearLayout;
public class imgCam extends Activity {
/** Called when the activity is first created. */
private Preview mPreview;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button butt=(Button)findViewById(R.id.button);
butt.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
mPreview = new Preview(getApplicationContext());
LinearLayout layout = new
LinearLayout(getApplicationContext
());
LinearLayout layoutcam = new LinearLayout
(getApplicationContext());
LinearLayout layoutbot = new LinearLayout
(getApplicationContext());
LinearLayout.LayoutParams lp = new
LinearLayout.LayoutParams
(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
LinearLayout.LayoutParams lp2 = new
LinearLayout.LayoutParams
(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT);
lp.height=360;
lp2.height=60;
layout.setOrientation(LinearLayout.VERTICAL);
layoutcam.addView(mPreview);
Button btn = new Button(getApplicationContext());
btn.setWidth(120);
btn.setText("Take Pictuer");
layoutbot.addView(btn);
layout.addView(layoutcam,lp);
layout.addView(layoutbot,lp2);
setContentView(layout);
//listner for the button below camera
btn.setOnClickListener(new OnClickListener(){
public void onClick(View v) {
mPreview.pictake();
//save part
ContentValues values = new ContentValues();
values.put(Images.Media.TITLE, "title");
values.put(Images.Media.BUCKET_ID, "test");
values.put(Images.Media.DESCRIPTION, "test Image
taken");
values.put(Images.Media.MIME_TYPE,
"image/jpeg");
Uri imageUri = getContentResolver().insert
(Media.EXTERNAL_CONTENT_URI, values);
OutputStream outstream;
// Bitmap myPic = Bitmap.createBitmap(320, 240,
false);
Bitmap mypic=Bitmap.createBitmap(2048,
1536,Bitmap.Config.RGB_565);
try {
outstream =
getContentResolver().openOutputStream(imageUri);
mypic.compress(CompressFormat.JPEG, 25, outstream);
outstream.close();
} catch (FileNotFoundException
e) {
// TODO Auto-generated
catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated
catch block
e.printStackTrace();
}
}
}
);
//end listner
}
}
);
}
}
class Preview extends SurfaceView implements SurfaceHolder.Callback {
SurfaceHolder mHolder;
Camera mCamera;
// new
boolean mPreviewRunning = false;
Preview(Context context) {
super(context);
// Install a SurfaceHolder.Callback so we get notified when
the
// underlying surface is created and destroyed.
mHolder = getHolder();
mHolder.addCallback(this);
mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
public void surfaceCreated(SurfaceHolder holder) {
// The Surface has been created, acquire the camera and tell
it where
// to draw.
mCamera = Camera.open();
try {
mCamera.setPreviewDisplay(holder);
} catch (IOException exception) {
mCamera.release();
mCamera = null;
// TODO: add more exception handling logic here
}
}
public void surfaceDestroyed(SurfaceHolder holder) {
// Surface will be destroyed when we return, so stop the
preview.
// Because the CameraDevice object is not a shared resource,
it's very
// important to release it when the activity is paused.
mCamera.stopPreview();
mCamera = null;
}
public void surfaceChanged(SurfaceHolder holder, int format, int
w, int h) {
if (mPreviewRunning) {
mCamera.stopPreview();
}
Camera.Parameters p = mCamera.getParameters();
p.setPreviewSize(w, h);
mCamera.setParameters(p);
try {
mCamera.setPreviewDisplay(holder);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
mCamera.startPreview();
mPreviewRunning = true;
}
Camera.PictureCallback mPictureCallback = new
Camera.PictureCallback() {
public void onPictureTaken(byte[] data, Camera c) {
// Log.e(TAG, "PICTURE CALLBACK: data.length = " +
data.length);
mCamera.startPreview();
}
};
public boolean onKeyDown(int keyCode, KeyEvent event)
{
if (keyCode == KeyEvent.KEYCODE_BACK) {
return super.onKeyDown(keyCode, event);
}
if (keyCode == KeyEvent.KEYCODE_CAMERA) {
mCamera.takePicture(null, mPictureCallback,null);
return true;
}
return false;
}
public void pictake(){
mCamera.takePicture(null, mPictureCallback,null);
}
}
Plz help me. Thanks in advance
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