Hi guys,
Thank you for your reply,
I tried this, unfortunately It doesnt solve the prob. The prob. I guess is
in the function
String url = Images.Media.insertImage(getContentResolver(), bm, null, null);
which returns a null value for "url" ?! why I dont know ?
I checked the values of the variables byte array "data" and bitmap " bm".
It looks like they are not null and they are pointing to
memory @'s.
any idea ?
thank you,
aek
On Wednesday, August 29, 2012 10:31:17 PM UTC+1, bob wrote:
>
> Maybe this will help?
>
> <uses-permission android:name="android.permission.*
> WRITE_EXTERNAL_STORAGE*"/>
>
>
>
> On Wednesday, August 29, 2012 3:03:15 PM UTC-5, aek wrote:
>>
>>
>> Thank you,
>>
>> Yes indeed it was a pb of permission. Now I saw some light. However
>> still I have a pb that concerns the saving
>> (The picture can not be saved).
>>
>> In the procedure done () { ....},
>>
>> the variable url = null and I dont know why
>> Images.Media.insertImage(getContentResolver(), bm, null, null); is returning
>> a null value, although I pressed on the button and the camera seems, it
>> worked normally (it made the normal sound of taking
>> a picture).
>>
>>
>> thank you very much guys
>>
>>
>>
>> On Wednesday, August 29, 2012 8:48:18 AM UTC+1, cpares wrote:
>>>
>>> Hello!
>>>
>>> Have you requested for permission to use the camera in the manifest?
>>> Something like this:
>>> <uses-permission android:name="android.permission.CAMERA" />
>>> (and maybe <uses-permission android:name="android.permission.AUTOFOCUS"
>>> /> too?)
>>>
>>> Good luck!
>>>
>>> On Wednesday, August 29, 2012 3:53:52 AM UTC+2, aek wrote:
>>>>
>>>>
>>>> Hi guys,
>>>>
>>>> I am trying to learn android hardware programming. an example of camera
>>>> programming, I took from a book, which is as listed bellow.
>>>> However unfortunately I am geting an error. "a process stops
>>>> unexpectdly". the pb I guess as per to what is shown by the log cat, is
>>>> due
>>>> to
>>>> a pb of connecting to the camera service. guys I need your help,
>>>>
>>>>
>>>> thank you!
>>>>
>>>> --------------------------------- program
>>>> package com.example.chapter7_hardware;
>>>>
>>>> import android.graphics.Bitmap;
>>>> import android.graphics.BitmapFactory;
>>>> import android.graphics.PixelFormat;
>>>> import android.hardware.Camera;
>>>> import android.hardware.Camera.PictureCallback;
>>>> import android.hardware.Camera.ShutterCallback;
>>>> import android.os.Bundle;
>>>> import android.provider.MediaStore.Images;
>>>> import android.app.Activity;
>>>> import android.content.Intent;
>>>> import android.util.Log;
>>>> import android.view.LayoutInflater;
>>>> import android.view.Menu;
>>>> import android.view.MenuItem;
>>>> import android.view.SurfaceHolder;
>>>> import android.view.SurfaceView;
>>>> import android.view.View;
>>>> import android.view.View.OnClickListener;
>>>> import android.view.ViewGroup.LayoutParams;
>>>> import android.view.Window;
>>>> import android.view.WindowManager;
>>>> import android.widget.Button;
>>>> import android.widget.Toast;
>>>> import android.support.v4.app.NavUtils;
>>>>
>>>> public class CameraApplication extends Activity implements
>>>> SurfaceHolder.Callback{
>>>>
>>>> private static final String TAG = "cookbook.hardware";
>>>> private LayoutInflater mInflater = null;
>>>> Camera mCamera;
>>>> byte[] tempdata;
>>>> boolean mPreviewRunning = false;
>>>> private SurfaceHolder mSurfaceHolder;
>>>> private SurfaceView mSurfaceView;
>>>> Button takepicture;
>>>>
>>>>
>>>>
>>>> @Override
>>>> public void onCreate(Bundle savedInstanceState) {
>>>> super.onCreate(savedInstanceState);
>>>> //
>>>>
>>>> getWindow().setFormat(PixelFormat.TRANSLUCENT);
>>>> requestWindowFeature(Window.FEATURE_NO_TITLE);
>>>>
>>>> getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
>>>> WindowManager.LayoutParams.FLAG_FULLSCREEN);
>>>>
>>>> setContentView(R.layout.activity_camera_application);
>>>>
>>>> mSurfaceView = (SurfaceView) findViewById(R.id.surface);
>>>> mSurfaceHolder = mSurfaceView.getHolder();
>>>> mSurfaceHolder.addCallback(this);
>>>>
>>>> mSurfaceHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
>>>>
>>>> mInflater = LayoutInflater.from(this);
>>>>
>>>> View overView = mInflater.inflate(R.layout.cameraoverlay,
>>>> null);
>>>> this.addContentView(overView, new
>>>> LayoutParams(LayoutParams.FILL_PARENT,
>>>>
>>>> LayoutParams.FILL_PARENT));
>>>>
>>>> takepicture = (Button) findViewById(R.id.button1);
>>>>
>>>> takepicture.setOnClickListener(new View.OnClickListener() {
>>>>
>>>> @Override
>>>> public void onClick(View v) {
>>>> // TODO Auto-generated method stub
>>>>
>>>> mCamera.takePicture(mShutterCallback, mPictureCallback,
>>>> mjpeg);
>>>>
>>>> }
>>>> });
>>>>
>>>> }
>>>>
>>>> ShutterCallback mShutterCallback = new ShutterCallback(){
>>>> @Override
>>>> public void onShutter(){}
>>>> };
>>>>
>>>>
>>>> PictureCallback mPictureCallback = new PictureCallback(){
>>>> @Override
>>>> public void onPictureTaken(byte[] data, Camera c){}
>>>> };
>>>>
>>>> PictureCallback mjpeg = new PictureCallback(){
>>>> public void onPictureTaken(byte[] data, Camera c){
>>>> if (data != null){
>>>> tempdata = data;
>>>> done();
>>>> }
>>>> }
>>>>
>>>>
>>>> };
>>>>
>>>>
>>>> void done() {
>>>> Bitmap bm = BitmapFactory.decodeByteArray(tempdata, 0,
>>>> tempdata.length);
>>>>
>>>> String url = Images.Media.insertImage(getContentResolver(), bm,
>>>> null, null);
>>>>
>>>> bm.recycle();
>>>> Bundle bundle = new Bundle();
>>>>
>>>> if (url != null){
>>>> bundle.putString("url", url);
>>>> Intent mIntent = new Intent();
>>>> mIntent.putExtras(bundle);
>>>>
>>>> setResult(RESULT_OK, mIntent);
>>>>
>>>>
>>>> } else {
>>>> Toast.makeText(this, "Picture can not be saved",
>>>> Toast.LENGTH_LONG).show();
>>>>
>>>> }
>>>>
>>>> finish();
>>>>
>>>>
>>>> }
>>>>
>>>>
>>>> @Override
>>>> public boolean onCreateOptionsMenu(Menu menu) {
>>>> getMenuInflater().inflate(R.menu.activity_camera_application,
>>>> menu);
>>>> return true;
>>>> }
>>>>
>>>> @Override
>>>> public void surfaceChanged(SurfaceHolder holder, int format, int w,
>>>> int h) {
>>>> // TODO Auto-generated method stub
>>>>
>>>> Log.e(TAG, "surfaceChanged");
>>>> try{
>>>> if (mPreviewRunning){
>>>> mCamera.stopPreview();
>>>> mPreviewRunning = false;
>>>> }
>>>>
>>>> Camera.Parameters p = mCamera.getParameters();
>>>> p.setPreviewSize(w, h);
>>>>
>>>> mCamera.setParameters(p);
>>>> mCamera.setPreviewDisplay(holder);
>>>> mCamera.startPreview();
>>>> mPreviewRunning = true;
>>>>
>>>> } catch (Exception e) {
>>>> Log.d("", e.toString());
>>>> }
>>>>
>>>>
>>>> }
>>>>
>>>>
>>>>
>>>> @Override
>>>> public void surfaceCreated(SurfaceHolder arg0) {
>>>> // TODO Auto-generated method stub
>>>>
>>>> Log.e(TAG, "surfaceCreated");
>>>> mCamera = Camera.open();
>>>>
>>>> }
>>>>
>>>> @Override
>>>> public void surfaceDestroyed(SurfaceHolder arg0) {
>>>> // TODO Auto-generated method stub
>>>>
>>>> Log.e(TAG, "surfaceDestroyed");
>>>> mCamera.stopPreview();
>>>> mPreviewRunning = false;
>>>> mCamera.release();
>>>> mCamera = null;
>>>>
>>>> }
>>>>
>>>>
>>>> }
>>>>
>>>>
>>>>
>>>> -------------------------------- log cat
>>>> 08-29 01:48:43.313: E/prog.hardware(395): surfaceCreated
>>>> 08-29 01:48:43.345: D/AndroidRuntime(395): Shutting down VM
>>>> 08-29 01:48:43.345: W/dalvikvm(395): threadid=1: thread exiting with
>>>> uncaught exception (group=0x4001d800)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): FATAL EXCEPTION: main
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): java.lang.RuntimeException:
>>>> Fail to connect to camera service
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> android.hardware.Camera.native_setup(Native Method)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> android.hardware.Camera.<init>(Camera.java:110)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> android.hardware.Camera.open(Camera.java:90)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> com.example.chapter7_hardware.CameraApplication.surfaceCreated(CameraApplication.java:167)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> android.view.SurfaceView.updateWindow(SurfaceView.java:532)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> android.view.SurfaceView.dispatchDraw(SurfaceView.java:339)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> android.view.ViewGroup.drawChild(ViewGroup.java:1638)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> android.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> android.view.ViewGroup.drawChild(ViewGroup.java:1638)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> android.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> android.view.View.draw(View.java:6743)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> android.widget.FrameLayout.draw(FrameLayout.java:352)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> android.view.ViewGroup.drawChild(ViewGroup.java:1640)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> android.view.ViewGroup.dispatchDraw(ViewGroup.java:1367)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> android.view.View.draw(View.java:6743)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> android.widget.FrameLayout.draw(FrameLayout.java:352)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:1842)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> android.view.ViewRoot.draw(ViewRoot.java:1407)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> android.view.ViewRoot.performTraversals(ViewRoot.java:1163)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> android.view.ViewRoot.handleMessage(ViewRoot.java:1727)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> android.os.Handler.dispatchMessage(Handler.java:99)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> android.os.Looper.loop(Looper.java:123)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> android.app.ActivityThread.main(ActivityThread.java:4627)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> java.lang.reflect.Method.invokeNative(Native Method)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> java.lang.reflect.Method.invoke(Method.java:521)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
>>>> 08-29 01:48:43.383: E/AndroidRuntime(395): at
>>>> dalvik.system.NativeStart.main(Native Method)
>>>>
>>>>
>>>>
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