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using bitmap, camera capture but occur nullpointerException on android

I try camera preview capture on android.
use Bitmap.
but occur NullpointerException
java.lang.NullPointerException
at kr.co.mytest.test.video.CameraTextureView.getImage(CameraTextureView.java:167)
at kr.co.mytest.test.video.CameraTextureView.onPreviewFrame(CameraTextureView.java:161)
at android.hardware.Camera$EventHandler.handleMessage(Camera.java:936)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:136)
at android.app.ActivityThread.main(ActivityThread.java:5001)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:785)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:601)
at dalvik.system.NativeStart.main(Native Method)
CameraTextureView.class
public class CameraTextureView extends TextureView implements TextureView.SurfaceTextureListener, Camera.PreviewCallback {
private Camera mCamera;
private CaptureViewer captureView;
.
.
.
#Override
public void onPreviewFrame(byte[] data, Camera camera) {
Log.d(TAG,"CHECK");
YuvImage image = new YuvImage(data, 20, 640 ,480, null);
Rect rect = new Rect(0, 0, 640, 480);
ByteArrayOutputStream bao = new ByteArrayOutputStream();
image.compressToJpeg(rect, 100, bao);
byte[] jpeg = bao.toByteArrary();
BitmapFactory.Options options = new BitmapFactory.Options();
options.inPreferredConfig = Bitmap.Config.RGB_565;
Bitmap convertedImage = BitmapFactory.decodeByteArray(jpeg, 0, jpeg.length, options);
Log.d(TAG, "convertedImage" + convertedImage); //android.graphics.Bitmap#21ac0b78
getImage(Bitmap.createScaleBitmap(convertedImage, 480, 360, true)); //nullPointerException
}
public void getImage(Bitmap bitmap) {
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
captureView.displayImage(bitmap);
}
CaptureView.class
public class CaptureView extends View {
private Bitmap mBitmap = null;
public void displayImage(Bitmap image) {
mBitmap = Bitmap.createBitmap(image);
postInvalidate();
}
}
displayImage is only showing capture image.
why occur nullpointerException?
onPreviewFrameis Called as preview frames are displayed.
how to process occur nullPointerException?
thanks.!

java.lang.IllegalArgumentException: Cannot draw recycled bitmaps - Android

I'm trying to implement Android-wheel, a library that I can use to imitate a slot machine.
The demo project works fine, it use's android's own drawables => android.R.drawable.*
However when I change the default images to the ones I want it gives me this error :
java.lang.IllegalArgumentException: Cannot draw recycled bitmaps
All I changed was the id's array which contains the reference to the images
from
private final int items[] = new int[] {
android.R.drawable.star_big_on,
android.R.drawable.stat_sys_warning,
android.R.drawable.radiobutton_on_background,
android.R.drawable.ic_delete
};
to
private final int items[] = new int[] {
R.drawable.sunglasses, R.drawable.ball, R.drawable.box};
Here's the rest of the code.
private class SlotMachineAdapter extends AbstractWheelAdapter {
// Image size
final int IMAGE_WIDTH = 267;
final int IMAGE_HEIGHT = 200;
// Slot machine symbols
private final int items[] = new int[] {
R.drawable.sunglasses, R.drawable.ball, R.drawable.box};
// Cached images
private List<SoftReference<Bitmap>> images;
// Layout inflater
private Context context;
/**
* Constructor
*/
public SlotMachineAdapter(Context context) {
this.context = context;
images = new ArrayList<SoftReference<Bitmap>>(items.length);
for (int id : items) {
images.add(new SoftReference<Bitmap>(loadImage(id)));
}
}
/**
* Loads image from resources
*/
private Bitmap loadImage(int id) {
Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(), id);
Bitmap scaled = Bitmap.createScaledBitmap(bitmap, IMAGE_WIDTH, IMAGE_HEIGHT, true);
bitmap.recycle();
return scaled;
}
#Override
public int getItemsCount() {
return items.length;
}
// Layout params for image view
final LayoutParams params = new LayoutParams(IMAGE_WIDTH, IMAGE_HEIGHT);
#Override
public View getItem(int index, View cachedView, ViewGroup parent) {
ImageView img;
if (cachedView != null) {
img = (ImageView) cachedView;
} else {
img = new ImageView(context);
}
img.setLayoutParams(params);
SoftReference<Bitmap> bitmapRef = images.get(index);
Bitmap bitmap = bitmapRef.get();
if (bitmap == null) {
bitmap = loadImage(items[index]);
images.set(index, new SoftReference<Bitmap>(bitmap));
}
img.setImageBitmap(bitmap);
return img;
}
}
Here's the full stacktrace
java.lang.IllegalArgumentException: Cannot draw recycled bitmaps
at android.view.GLES20Canvas.drawBitmap(GLES20Canvas.java:778)
at android.view.GLES20RecordingCanvas.drawBitmap(GLES20RecordingCanvas.java:117)
at android.graphics.drawable.BitmapDrawable.draw(BitmapDrawable.java:393)
at android.widget.ImageView.onDraw(ImageView.java:961)
at android.view.View.draw(View.java:13765)
at android.view.View.draw(View.java:13649)
at android.view.ViewGroup.drawChild(ViewGroup.java:2940)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2810)
at android.view.View.draw(View.java:13768)
at kankan.wheel.widget.WheelView.drawItems(WheelView.java:587)
at kankan.wheel.widget.WheelView.onDraw(WheelView.java:557)
android.view.View.draw(View.java:13765)
at android.view.View.getDisplayList(View.java:12716)
at android.view.View.getDisplayList(View.java:12760)
at android.view.View.draw(View.java:13489)
at android.view.ViewGroup.drawChild(ViewGroup.java:2940)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2810)
at android.view.View.getDisplayList(View.java:12714)
at android.view.View.getDisplayList(View.java:12760)
at android.view.View.draw(View.java:13489)
at android.view.ViewGroup.drawChild(ViewGroup.java:2940)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2810)
at android.view.View.draw(View.java:13768)
at android.view.View.getDisplayList(View.java:12716)
at android.view.View.getDisplayList(View.java:12760)
at android.view.View.draw(View.java:13489)
at android.view.ViewGroup.drawChild(ViewGroup.java:2940)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2810)
at android.view.View.getDisplayList(View.java:12714)
at android.view.View.getDisplayList(View.java:12760)
at android.view.View.draw(View.java:13489)
at android.view.ViewGroup.drawChild(ViewGroup.java:2940)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2810)
at android.view.View.getDisplayList(View.java:12714)
at android.view.View.getDisplayList(View.java:12760)
at android.view.View.draw(View.java:13489)
at android.view.ViewGroup.drawChild(ViewGroup.java:2940)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:2810)
at android.view.View.draw(View.java:13768)
at android.widget.FrameLayout.draw(FrameLayout.java:467)
at com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:2394)
at android.view.View.getDisplayList(View.java:12716)
at android.view.View.getDisplayList(View.java:12760)
at android.view.HardwareRenderer$GlRenderer.draw(HardwareRenderer.java:1144)
at android.view.ViewRootImpl.draw(ViewRootImpl.java:2267)
at android.view.ViewRootImpl.performDraw(ViewRootImpl.java:2139)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1950)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1107)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4464)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
at android.view.Choreographer.doCallbacks(Choreographer.java:555)
at android.view.Choreographer.doFrame(Choreographer.java:525)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
at android.os.Handler.handleCallback(Handler.java:615)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4895) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:994) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:761) at dalvik.system.NativeStart.main(Native Method)

I think it is beacause you do bitmap.recycle() too frequently,while the system.gc() is not timely called,so variable bitmap is recycle(), but not really cleared by the system, we can't use it to load the new image. so, just comment bitmap.recycle(),Let the system recycle the gabage by itself.

Try with this -
if(bitmap!=null)
{
bitmap.recycle();
bitmap=null;
}

Android ComponentInfo RuntimeException and NullPointerException

This is doing my head in, and it's probably something simple that's causing it - so I think I need a new set of eyes looking at it.
All activities are defined in the manifest. I've made sure all attributes are initialised in onCreate/constructor.
The 'Circle' object is just a generic object with gets and sets for x, y, radius and colour.
Any help greatly appreciated.
10-01 16:06:28.338: E/AndroidRuntime(18306): FATAL EXCEPTION: main
10-01 16:06:28.338: E/AndroidRuntime(18306): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.dbk.parallelreaction/com.dbk.parallelreaction.GameActivity}: java.lang.NullPointerException
10-01 16:06:28.338: E/AndroidRuntime(18306): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2308)
10-01 16:06:28.338: E/AndroidRuntime(18306): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2358)
10-01 16:06:28.338: E/AndroidRuntime(18306): at android.app.ActivityThread.access$600(ActivityThread.java:153)
10-01 16:06:28.338: E/AndroidRuntime(18306): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1247)
10-01 16:06:28.338: E/AndroidRuntime(18306): at android.os.Handler.dispatchMessage(Handler.java:99)
10-01 16:06:28.338: E/AndroidRuntime(18306): at android.os.Looper.loop(Looper.java:137)
10-01 16:06:28.338: E/AndroidRuntime(18306): at android.app.ActivityThread.main(ActivityThread.java:5227)
10-01 16:06:28.338: E/AndroidRuntime(18306): at java.lang.reflect.Method.invokeNative(Native Method)
10-01 16:06:28.338: E/AndroidRuntime(18306): at java.lang.reflect.Method.invoke(Method.java:511)
10-01 16:06:28.338: E/AndroidRuntime(18306): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:795)
10-01 16:06:28.338: E/AndroidRuntime(18306): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:562)
10-01 16:06:28.338: E/AndroidRuntime(18306): at dalvik.system.NativeStart.main(Native Method)
10-01 16:06:28.338: E/AndroidRuntime(18306): Caused by: java.lang.NullPointerException
10-01 16:06:28.338: E/AndroidRuntime(18306): at com.dbk.parallelreaction.util.GameView.<init>(GameView.java:51)
10-01 16:06:28.338: E/AndroidRuntime(18306): at com.dbk.parallelreaction.GameActivity.onCreate(GameActivity.java:64)
10-01 16:06:28.338: E/AndroidRuntime(18306): at android.app.Activity.performCreate(Activity.java:5104)
10-01 16:06:28.338: E/AndroidRuntime(18306): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
10-01 16:06:28.338: E/AndroidRuntime(18306): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2262)
The two files in question:
GameActivity.java
package com.dbk.parallelreaction;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Color;
import android.graphics.Typeface;
import android.os.Bundle;
import android.os.CountDownTimer;
import android.widget.FrameLayout;
import android.widget.ProgressBar;
import android.widget.TextView;
import com.dbk.parallelreaction.util.GameView;
public class GameActivity extends Activity {
// GameView object to hold current level
private GameView game;
// level/score persistance
private int currentLevel;
private int currentScore;
// game countdown timer
private CountDownTimer timer;
private int timerTime; // in milliseconds
private int timerPeriod; // in ms also
private int timerIndex;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_game);
// initialise
timerTime = 10000;
timerPeriod = 50;
timerIndex = (int) timerTime / timerPeriod;
// aesthetic stuff
TextView ins = (TextView) findViewById(R.id.GameInstructions);
Typeface tf = Typeface.createFromAsset(getAssets(), "Economica-Regular.ttf");
ins.setTypeface(tf);
ins.setTextColor(Color.WHITE);
ins.setTextSize(18);
// get extras
Bundle extras = getIntent().getExtras();
currentLevel = extras.getInt("LEVEL");
currentScore = extras.getInt("SCORE");
// check if starting new game, or going to next level
switch(currentLevel) {
case 1:
// new level
break;
case 2:
// etc
break;
}
// add the game view to the layout
FrameLayout frame = (FrameLayout) findViewById(R.id.GameContainer);
game = new GameView(this, 2);
frame.addView(game);
// timer bar
final ProgressBar pb = (ProgressBar) findViewById(R.id.GameTimerBar);
pb.setMax(timerIndex);
pb.setProgress(timerIndex);
timer = new CountDownTimer(timerTime, timerPeriod) {
#Override
public void onFinish() {
pb.setProgress(timerIndex);
Bundle extras = new Bundle();
extras.putInt("SCORE", 16); // placeholder score
Intent i = new Intent(getApplicationContext(), GameOverActivity.class);
i.putExtras(extras);
// GAME OVER if timer bar empties
finish();
startActivity(i);
}
#Override
public void onTick(long msLeft) {
timerIndex--;
pb.setProgress(timerIndex);
}
}.start();
}
// cancel timer if user exits game
public void onBackPressed() {
super.onBackPressed();
timer.cancel();
}
}
GameView.java updated
package com.dbk.parallelreaction.util;
import java.util.ArrayList;
import java.util.Random;
import android.content.Context;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.view.LayoutInflater;
import android.view.MotionEvent;
import android.view.SurfaceView;
import android.view.View;
import android.view.ViewGroup;
import android.widget.FrameLayout;
import com.dbk.parallelreaction.R;
public class GameView extends SurfaceView {
// Temp ArrayList containing Circle objects
private ArrayList<Circle> circles;
// Paint object for colour info
private Paint paint;
// number of circles to draw depending on level
private int numCircles;
// Current score in the current level
private int levelScore;
public GameView(Context context, int numberCircles) {
super(context);
LayoutInflater inflater =(LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
// replace custom_layout with the name of the .xml file that contains the `FrameLayout` with id R.id.GameContainer
View v = inflater.inflate(R.layout.activity_game, (ViewGroup) GameView.this.getParent(), true);
FrameLayout frame = (FrameLayout) v.findViewById(R.id.GameContainer);
// initialise
circles = new ArrayList<Circle>();
paint = new Paint();
levelScore = 0;
numCircles = numberCircles;
// Get the game container FrameView
int frameW = frame.getWidth();
int frameH = frame.getHeight();
int frameL = frame.getLeft();
int frameT = frame.getTop();
// fill arraylist with random circles
Random random = new Random();
for(int i=0; i<numCircles; i++) {
// generate coords within the frame
int x = random.nextInt((frameL+frameW)-frameL) + frameL;
int y = random.nextInt((frameT+frameH)-frameT) + frameT;
// random radius between 50 and 10
int r = random.nextInt(50-10) + 10;
// add them to the ArrayList
circles.add(new Circle(x, y, r, Color.WHITE));
}
}
#Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
for(int i=0; i<numCircles; i++) {
Circle c = circles.get(i);
// set colour
paint.setColor(c.getColor());
// draw circle to canvas
canvas.drawCircle(c.getX(), c.getY(), c.getRadius(), paint);
}
}
}

If your custom SurfaceView will have a layout you need to inflate it. On your constructor you have
FrameLayout frame = (FrameLayout) findViewById(R.id.GameContainer);
You are trying to reference a FrameLayout that has not been inflated yet. To inflate the corresponding .xml you need to use a LayoutInflator. You can get a reference to the LayoutInflated via the Context passed in to your SurfaceView. For example like this:
public GameView(Context context, AttributeSet attrs, int numberCircles){
super(context,attrs);
LayoutInflater inflater =(LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
//replace custom_layout with the name of the .xml file that contains the `FrameLayout` with id R.id.GameContainer
View v = inflater.inflate(R.layout.custom_layout, (ViewGroup) GameView.this.getParent(), true);
FrameLayout frame = (FrameLayout)v.findViewById(R.id.GameContainer);
//The rest of your code...
}
Also, If you are going to add your GameView to an .xml file you need to use the SurfaceView(Context context, AttributeSet attrs) constructor.

Please check your XML that whether you have supplied correct ID for Frame Layout in GameView.java

Taking a picture and using the image - Out of memory error

OK, I am developing an android application that takes a photo using the camera, then uses that image in an ImageView.
The problem that I'm having is that I keep getting an java.lang.OutOfMemoryError exception when I try and load the image.
Code to start camera intent:
button.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View arg0) {
AlertDialog.Builder builder = new AlertDialog.Builder(AddVehicleActivity.this);
builder.setTitle("Select A Method");
builder.setItems(R.array.array_PhotoMethods, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
switch(which) {
case 0 :
IMAGE_LOCATION = Utility.setFileName(_session); //Returns image path
Intent cameraIntent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
cameraIntent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(IMAGE_LOCATION)));
startActivityForResult(cameraIntent, CAMERA_PIC_REQUEST);
break;
}
}
});
builder.show();
}
});
From my understanding, this will allow the image to be saved at the full resolution of the camera which I can confirm through the image details in the gallery. Using my Samsung SIII, my image is about 3.3MB. So, I am able to use the camera and store the image I take using the camera to path I specify. The problem comes when trying to use the image.
To load the image, I use the following:
public static Bitmap Shrink(String file, int width, int height) {
BitmapFactory.Options bmpFactoryOptions = new BitmapFactory.Options();
int heightRatio = (int)Math.ceil(bmpFactoryOptions.outHeight/(float)height);
int widthRatio = (int)Math.ceil(bmpFactoryOptions.outWidth/(float)width);
if (heightRatio > 1 || widthRatio > 1) {
bmpFactoryOptions.inSampleSize = (heightRatio > widthRatio) ? heightRatio : widthRatio;
}
return BitmapFactory.decodeFile(file, bmpFactoryOptions);
}
I have rewritten this functions a few different ways and found out that sometimes, I get the memory error when calling BitmapFactory.decodeFile
My stack trace looks like this:
E/dalvikvm-heap(8355): Out of memory on a 31961104-byte allocation.
java.lang.OutOfMemoryError
at android.graphics.BitmapFactory.nativeDecodeStream(Native Method)
at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:619)
at android.graphics.BitmapFactory.decodeFile(BitmapFactory.java:385)
at com.autopilot.com.objects.Images.Shrink(Images.java:191)
at com.autopilot.com.adapters.ImageAdapter.getView(ImageAdapter.java:90)
at android.widget.AbsListView.obtainView(AbsListView.java:2437)
at android.widget.GridView.onMeasure(GridView.java:1030)
at android.view.View.measure(View.java:15395)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4826)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1396)
at android.widget.LinearLayout.measureHorizontal(LinearLayout.java:1038)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:576)
at android.view.View.measure(View.java:15395)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4826)
at android.widget.LinearLayout.measureChildBeforeLayout(LinearLayout.java:1396)
at android.widget.LinearLayout.measureHorizontal(LinearLayout.java:1038)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:576)
at android.view.View.measure(View.java:15395)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4826)
at android.widget.LinearLayout.forceUniformWidth(LinearLayout.java:926)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:906)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:574)
at android.view.View.measure(View.java:15395)
at android.widget.RelativeLayout.measureChildHorizontal(RelativeLayout.java:617)
at android.widget.RelativeLayout.onMeasure(RelativeLayout.java:399)
at android.view.View.measure(View.java:15395)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4826)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
at android.view.View.measure(View.java:15395)
at android.widget.LinearLayout.measureVertical(LinearLayout.java:833)
at android.widget.LinearLayout.onMeasure(LinearLayout.java:574)
at android.view.View.measure(View.java:15395)
at android.view.ViewGroup.measureChildWithMargins(ViewGroup.java:4826)
at android.widget.FrameLayout.onMeasure(FrameLayout.java:310)
at com.android.internal.policy.impl.PhoneWindow$DecorView.onMeasure(PhoneWindow.java:2362)
at android.view.View.measure(View.java:15395)
at android.view.ViewRootImpl.performMeasure(ViewRootImpl.java:1985)
at android.view.ViewRootImpl.measureHierarchy(ViewRootImpl.java:1226)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1399)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1119)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:4553)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:725)
at android.view.Choreographer.doCallbacks(Choreographer.java:555)
at android.view.Choreographer.doFrame(Choreographer.java:525)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:711)
at android.os.Handler.handleCallback(Handler.java:615)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4950)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1004)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:771)
at dalvik.system.NativeStart.main(Native Method)
From tracing this through, the memory exception occurs anytime that the original bitmap is loaded. I cannot find a way to set the saved image size and when I try to save the bitmap from the intent extras, it's never big enough, usually thumb nail size.
Any help would be greatly appreciated!

OK, I found the answer, thank you sunil!
public static Bitmap Shrink(String file, int width, int height) {
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(file, options);
options.inSampleSize = calcSize(options, width, height);
options.inJustDecodeBounds = false;
Bitmap bmp = BitmapFactory.decodeFile(file, options);
return bmp;
}
public static int calcSize(BitmapFactory.Options options, int width, int height) {
final int uHeight = options.outHeight;
final int uWidth = options.outWidth;
int inSampleSize = 1;
if (uHeight > height || uWidth > width) {
if (uWidth > uHeight) {
inSampleSize = Math.round((float) uHeight / (float) height);
} else {
inSampleSize = Math.round((float) uWidth / (float) width);
}
}
return inSampleSize;
}

Tesseract RECOGNITION fix?

I have been able to export my code into an application and use the Tess-Two file from this tutorial
to integrate the tesseract into it. But now I'm facing problems; when the picture is sent to the tesseract it just returns the same random characters each time: 'f' wig, W fin. A. " 5' ' ,{ >>zv' ' ~" > ';>'. What seems to be the problem?
ImageView iv;
TextView tv;
protected Bitmap _image;
protected Bitmap bmp;
public static String The_path = "/mnt/sdcard/DCIM/100MEDIA/TESS.jpg";
public static String lang = "eng";
public static final String DATA_PATH = Environment.getExternalStorageDirectory().toString() + "/SimpleAndroidOCR/";
private int pageSegmentationMode = TessBaseAPI.PageSegMode.PSM_AUTO;
#Override
public void onCreate(Bundle savedInstanceState) {
try {
AssetManager assetManager = getAssets();
InputStream in = assetManager.open("tessdata/eng.traineddata");
//GZIPInputStream gin = new GZIPInputStream(in);
OutputStream out = new FileOutputStream(DATA_PATH + "tessdata/eng.traineddata");
//Transfer bytes from in to out
byte[] buf = new byte[1024];
int len;
//while ((len = gin.read(buf)) > 0) {
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
in.close();
//gin.close();
out.close();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
};
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
iv = (ImageView) findViewById(R.id.imageView1);
tv = (TextView) findViewById(R.id.textView1);
Button but = (Button) findViewById(R.id.button1);
Button but2 = (Button) findViewById(R.id.button2);
but.setOnClickListener(new OnClickListener() {
public void onClick(View v){
//File file = new File( _path );
//Uri outputFileUri = Uri.fromFile( file );
Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);
//intent.putExtra( MediaStore.EXTRA_OUTPUT, outputFileUri );
startActivityForResult(intent, 0);
}
});
but2.setOnClickListener(new OnClickListener() {
public void onClick(View v){
TessBaseAPI baseApi = new TessBaseAPI();
baseApi.setDebug(true);
baseApi.setPageSegMode(pageSegmentationMode);
baseApi.init(DATA_PATH, lang);
// DATA_PATH = Path to the storage
// lang for which the language data exists, usually "eng"
try {
baseApi.setImage(ReadFile.readBitmap(bmp));
String recognizedText = baseApi.getUTF8Text();
txt(recognizedText);
} catch(RuntimeException e) {
}
baseApi.end();
}
private void txt(String txt) {
// TODO Auto-generated method stub
tv.setText(txt);
}
});
}
#Override
protected void onActivityResult(int requestCode, int resultCode, Intent data){
super.onActivityResult(requestCode, resultCode, data);
BitmapFactory.Options options = new BitmapFactory.Options();
options.inPreferredConfig = Bitmap.Config.ARGB_8888;
options.inSampleSize = 4;
Bitmap bitmap = BitmapFactory.decodeFile(The_path, options);
try {
ExifInterface exif = new ExifInterface(The_path);
int exifOrientation = exif.getAttributeInt(
ExifInterface.TAG_ORIENTATION,
ExifInterface.ORIENTATION_NORMAL);
int rotate = 0;
switch (exifOrientation) {
case ExifInterface.ORIENTATION_ROTATE_90:
rotate = 90;
break;
case ExifInterface.ORIENTATION_ROTATE_180:
rotate = 180;
break;
case ExifInterface.ORIENTATION_ROTATE_270:
rotate = 270;
break;
}
if (rotate != 0) {
// Getting width & height of the given image.
int w = bitmap.getWidth();
int h = bitmap.getHeight();
// Setting pre rotate
Matrix mtx = new Matrix();
mtx.preRotate(rotate);
// Rotating Bitmap
bitmap = Bitmap.createBitmap(bitmap, 0, 0, w, h, mtx, false);
}
bitmap = toGrayscale(bitmap);
bitmap = bitmap.copy(Bitmap.Config.ARGB_8888, true);
} catch (IOException e) {
}
_image = (Bitmap) data.getExtras().get("data");
iv.setImageBitmap(_image);
bmp = bitmap;
} public static Bitmap toGrayscale(Bitmap bmpOriginal){
int width, height;
height = bmpOriginal.getHeight();
width = bmpOriginal.getWidth();
Bitmap bmpGrayscale = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
Canvas c = new Canvas(bmpGrayscale);
Paint paint = new Paint();
ColorMatrix cm = new ColorMatrix();
cm.setSaturation(0);
ColorMatrixColorFilter f = new ColorMatrixColorFilter(cm);
paint.setColorFilter(f);
c.drawBitmap(bmpOriginal, 0, 0, paint);
return bmpGrayscale;
}
here is the new log cat after adding the grayscale function:
(receiving a new set of reoccurring random characters)
01-26 10:21:36.973: D/libEGL(1389): loaded /system/lib/egl/libEGL_adreno200.so
01-26 10:21:36.973: D/libEGL(1389): loaded /system/lib/egl/libGLESv1_CM_adreno200.so
01-26 10:21:36.973: D/libEGL(1389): loaded /system/lib/egl/libGLESv2_adreno200.so
01-26 10:21:36.983: I/Adreno200-EGL(1389): <eglInitialize:269>: EGL 1.4 QUALCOMM build: Nondeterministic AU_full_mako_PARTNER-ANDROID/JB-MR1- DEV_CL2946718_release_AU (CL2946718)
01-26 10:21:36.983: I/Adreno200-EGL(1389): Build Date: 11/04/12 Sun
01-26 10:21:36.983: I/Adreno200-EGL(1389): Local Branch:
01-26 10:21:36.983: I/Adreno200-EGL(1389): Remote Branch: m/partner-android/jb-mr1-dev
01-26 10:21:36.983: I/Adreno200-EGL(1389): Local Patches: NONE
01-26 10:21:36.983: I/Adreno200-EGL(1389): Reconstruct Branch: NOTHING
01-26 10:21:37.043: D/OpenGLRenderer(1389): Enabling debug mode 0
01-26 10:21:45.502: E/BitmapFactory(1389): Unable to decode stream: java.io.FileNotFoundException: /mnt/sdcard/DCIM/100MEDIA/TESS.jpg: open failed: ENOENT (No such file or directory)
01-26 10:21:45.502: E/JHEAD(1389): can't open '/mnt/sdcard/DCIM/100MEDIA/TESS.jpg'
01-26 10:21:45.512: D/AndroidRuntime(1389): Shutting down VM
01-26 10:21:45.512: W/dalvikvm(1389): threadid=1: thread exiting with uncaught exception (group=0x417b0930)
01-26 10:21:45.522: E/AndroidRuntime(1389): FATAL EXCEPTION: main
01-26 10:21:45.522: E/AndroidRuntime(1389): java.lang.RuntimeException: Failure delivering result ResultInfo{who=null, request=0, result=-1, data=Intent { act=inline-data (has extras) }} to activity {com.cam.calc/cam.calc.Main}: java.lang.NullPointerException
01-26 10:21:45.522: E/AndroidRuntime(1389): at android.app.ActivityThread.deliverResults(ActivityThread.java:3319)
01-26 10:21:45.522: E/AndroidRuntime(1389): at android.app.ActivityThread.handleSendResult(ActivityThread.java:3362)
01-26 10:21:45.522: E/AndroidRuntime(1389): at android.app.ActivityThread.access$1100(ActivityThread.java:141)
01-26 10:21:45.522: E/AndroidRuntime(1389): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1282)
01-26 10:21:45.522: E/AndroidRuntime(1389): at android.os.Handler.dispatchMessage(Handler.java:99)
01-26 10:21:45.522: E/AndroidRuntime(1389): at android.os.Looper.loop(Looper.java:137)
01-26 10:21:45.522: E/AndroidRuntime(1389): at android.app.ActivityThread.main(ActivityThread.java:5039)
01-26 10:21:45.522: E/AndroidRuntime(1389): at java.lang.reflect.Method.invokeNative(Native Method)
01-26 10:21:45.522: E/AndroidRuntime(1389): at java.lang.reflect.Method.invoke(Method.java:511)
01-26 10:21:45.522: E/AndroidRuntime(1389): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
01-26 10:21:45.522: E/AndroidRuntime(1389): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
01-26 10:21:45.522: E/AndroidRuntime(1389): at dalvik.system.NativeStart.main(Native Method)
01-26 10:21:45.522: E/AndroidRuntime(1389): Caused by: java.lang.NullPointerException
01-26 10:21:45.522: E/AndroidRuntime(1389): at cam.calc.Main.onActivityResult(Main.java:388)
01-26 10:21:45.522: E/AndroidRuntime(1389): at android.app.Activity.dispatchActivityResult(Activity.java:5293)
01-26 10:21:45.522: E/AndroidRuntime(1389): at android.app.ActivityThread.deliverResults(ActivityThread.java:3315)
01-26 10:21:45.522: E/AndroidRuntime(1389): ... 11 more

You need to process the images before OCR, at least convert the image to black&white (gray scale) can enhance the result :
bitmap = toGrayscale(bitmap);
bitmap = bitmap.copy(Bitmap.Config.ARGB_8888, true);
you can user OpenCV or any Image Processing Library, for for simple task like grayscale its enopugh to use
import android.graphics.*;
public static Bitmap toGrayscale(Bitmap bmpOriginal)
{
int width, height;
height = bmpOriginal.getHeight();
width = bmpOriginal.getWidth();
Bitmap bmpGrayscale = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
Canvas c = new Canvas(bmpGrayscale);
Paint paint = new Paint();
ColorMatrix cm = new ColorMatrix();
cm.setSaturation(0);
ColorMatrixColorFilter f = new ColorMatrixColorFilter(cm);
paint.setColorFilter(f);
c.drawBitmap(bmpOriginal, 0, 0, paint);
return bmpGrayscale;
}
Also if the image is too large you may need to crop the image and get the area that contain the characters & numbers you want to recognize, its also make OCR engine job more easier/more accuracy and sometimes its prevents you from OutOfMemoryException.