I'm getting
Canvas: trying to use a recycled bitmap
android.graphics.Bitmap#4057a3a8
everytime i'm trying to show one image.
Image
When i delete bmp.recycle() everything goes well but i dont use this image in my code so i dont understand where the problem is.
package com.example.photobooth;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import android.os.Bundle;
import android.os.Environment;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Rect;
import android.util.DisplayMetrics;
import android.view.MotionEvent;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.View.OnTouchListener;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Button;
import android.widget.ImageView;
public class EditorActivity extends Activity implements OnClickListener{
String path = null;
private int screen_height;
private int screen_width;
private Bitmap setUpImage(Bitmap image) {
int min_side = Math.min(screen_height, screen_width);
float scale_factor = (float) (((float) min_side / image.getWidth()) * 1.5);
float[] scalef = { scale_factor, scale_factor };
Bitmap scaled_image = ImageUtilities.scaleImage(image, scalef);
return scaled_image;
}
private void setUp() {
Bundle b = getIntent().getExtras();
if (b != null) {
path = b.getString("path");
}
DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);
this.screen_height = metrics.heightPixels;
this.screen_width = metrics.widthPixels;
int min_measure = Math.min(screen_width, screen_height);
// Make ImageView square
ImageView img = (ImageView) findViewById(R.id.photo_holder);
android.view.ViewGroup.LayoutParams lp = img.getLayoutParams();
lp.height = min_measure;
img.setLayoutParams(lp);
Bitmap bmp = BitmapFactory.decodeFile(path);
final Bitmap ready_image = setUpImage(bmp);
bmp.recycle();
ImageView iv = (ImageView) findViewById(R.id.photo_holder);
iv.setImageBitmap(ready_image);
// set up touch event for imageview(photo_holder)
img.setOnTouchListener(new OnTouchListener() {
float touch_x, touch_y, scrolled_x = 0.0f, scrolled_y = 0.0f;
public boolean onTouch(View v, MotionEvent event) {
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
touch_x = event.getX();
touch_y = event.getY();
break;
case MotionEvent.ACTION_MOVE:
float cur_x = event.getX();
float cur_y = event.getY();
float scroll_x = -cur_x + touch_x;
float scroll_y = -cur_y + touch_y;
scrolled_x += scroll_x;
scrolled_y += scroll_y;
if (scrolled_x > (ready_image.getWidth() - screen_width)/2
|| scrolled_x < -(ready_image.getWidth() - screen_width)/2){
scrolled_x -= scroll_x;
scroll_x = 0;
}
if (scrolled_y > (ready_image.getHeight() - screen_width)/2
|| scrolled_y < -(ready_image.getHeight() - screen_width)/2){
scrolled_y -= scroll_y;
scroll_y = 0;
}
v.scrollBy((int) (scroll_x),
(int) (scroll_y));
touch_x = cur_x;
touch_y = cur_y;
break;
}
return true;
}
});
//Set up buttons
Button btn = (Button)findViewById(R.id.save);
btn.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
ImageView img = (ImageView)findViewById(R.id.photo_holder);
int scroll_x = img.getScrollX();
int scroll_y = img.getScrollY();
int left = (ready_image.getWidth() - screen_width)/2
+ scroll_x;
int top = (ready_image.getHeight() - screen_width)/2
+ scroll_y;
int right = left + screen_width;
int bottom = top + screen_width;
Rect r = new Rect(left, top, right, bottom);
Bitmap croped_image = ImageUtilities.cropImage(ready_image,
r,
screen_width,
screen_width);
String path_to_folder = Environment.getExternalStorageDirectory()
.getAbsolutePath();
String pic_path = path_to_folder + File.separator + MainActivity.app_name;
File f = new File(pic_path);
File picture = null;
try {
picture = File.createTempFile("photo_", ".jpg", f);
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
try {
FileOutputStream fos = new FileOutputStream(picture);
croped_image.compress(Bitmap.CompressFormat.JPEG, 100, fos);
fos.close();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
});
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
if (requestWindowFeature(Window.FEATURE_NO_TITLE))
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_editor);
setUp();
}
public void onClick(View v) {
// TODO Auto-generated method stub
}
}
bmp is recycled in setUp() method.
ImageUtility is
package com.example.photobooth;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.graphics.PorterDuff.Mode;
import android.graphics.PorterDuffXfermode;
import android.graphics.Rect;
import android.graphics.RectF;
public class ImageUtilities {
public static Bitmap getRoundedCornerBitmap(Context context, Bitmap input,
int pixels, int w, int h, boolean squareTL, boolean squareTR,
boolean squareBL, boolean squareBR, boolean border) {
Bitmap output = Bitmap.createBitmap(w, h, Config.ARGB_8888);
Canvas canvas = new Canvas(output);
final float densityMultiplier = context.getResources()
.getDisplayMetrics().density;
final int color = 0xff424242;
final Paint paint = new Paint();
final Rect rect = new Rect(0, 0, w, h);
final RectF rectF = new RectF(rect);
// make sure that our rounded corner is scaled appropriately
final float roundPx = pixels * densityMultiplier;
paint.setAntiAlias(true);
canvas.drawARGB(0, 0, 0, 0);
paint.setColor(color);
canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
// draw rectangles over the corners we want to be square
if (squareTL) {
canvas.drawRect(0, 0, w / 2, h / 2, paint);
}
if (squareTR) {
canvas.drawRect(w / 2, 0, w, h / 2, paint);
}
if (squareBL) {
canvas.drawRect(0, h / 2, w / 2, h, paint);
}
if (squareBR) {
canvas.drawRect(w / 2, h / 2, w, h, paint);
}
paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));
canvas.drawBitmap(input, 0, 0, paint);
if (border) {
paint.setStyle(Paint.Style.STROKE);
paint.setColor(Color.WHITE);
paint.setStrokeWidth(3);
canvas.drawRoundRect(rectF, roundPx, roundPx, paint);
}
return output;
}
public static Bitmap cropImage(Bitmap origina_bmp, Rect rec, int w, int h) {
Bitmap target_bitmap = Bitmap.createBitmap(w, h,
Bitmap.Config.ARGB_8888);
target_bitmap.setDensity(origina_bmp.getDensity());
Canvas canvas = new Canvas(target_bitmap);
canvas.drawBitmap(origina_bmp, new Rect(rec.left, rec.top, rec.right,
rec.bottom), new Rect(0, 0, w, h), null);
return target_bitmap;
}
public static Bitmap makeSquareImage(Bitmap original_image, int size){
int min_side = Math.min(original_image.getWidth(),
original_image.getHeight());
int side_size = ImageUtilities.get2del(min_side);
int crop_to;
Bitmap croped_image = null;
if (min_side == original_image.getWidth()){
crop_to = (original_image.getHeight() - side_size) / 2;
croped_image = ImageUtilities.cropImage(original_image, new Rect(
0, crop_to, original_image.getWidth(),
original_image.getHeight() - crop_to), size, size);
}else{
crop_to = (original_image.getWidth() - side_size) / 2;
croped_image = ImageUtilities.cropImage(original_image, new Rect(
crop_to, 0, original_image.getWidth() - crop_to,
original_image.getHeight()), size, size);
}
return croped_image;
}
public static int get2del(int num) {
while (num % 2 != 0)
num++;
return num;
}
public static Bitmap scaleImage(Bitmap originalBMP, float[] scaleFactor) {
Matrix scaleMat = new Matrix();
scaleMat.postScale(scaleFactor[0], scaleFactor[1]);
Bitmap scaledImage = Bitmap.createBitmap(originalBMP, 0, 0,
originalBMP.getWidth(), originalBMP.getHeight(), scaleMat,
false);
return scaledImage;
}
}
so it doesn't.
If i write bmp = null instead of bmp.recycle() everything is ok but i wonder why in the second chance application is crashed.
What is ImageUtilities? Maybe scaleImage may reuse the same image.
Does your program work correctly if you do:
bmp = null;
instead of
bmp.recycle();
?
The official documentation of recycle says:
"This is an advanced call, and normally need not be called, since the normal GC process will free up this memory when there are no more references to this bitmap. "
So using "bmp = null" should be better than "bmp.recycle()".
Related
I have had this issue for a few days already and I'm not sure how to fix it. I have a code to open the camera and display the output in full screen. but the displied image is not full. a part of it is not there. I added this function and it fixed the image but the display is not in full screen anymore.
here are the two images before and after adding the function
Before
After
the function I added
private void configureTransform(int viewWidth, int viewHeight) {
if (null == mTextureView || null == mPreviewSize) {
return;
}
int rotation = getWindowManager().getDefaultDisplay().getRotation();
Matrix matrix = new Matrix();
RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
RectF bufferRect = new RectF(0, 0, mPreviewSize.getHeight(), mPreviewSize.getWidth());
matrix.setRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.FILL);
mTextureView.setTransform(matrix);
}
my Full code for the camera is here
package com.example.myapplication;
import androidx.annotation.NonNull;
import androidx.appcompat.app.AppCompatActivity;
import android.animation.ValueAnimator;
import android.annotation.SuppressLint;
import android.app.Fragment;
import android.content.Context;
import android.content.DialogInterface;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.content.res.Configuration;
import android.graphics.Bitmap;
import android.graphics.ImageFormat;
import android.graphics.Matrix;
import android.graphics.Point;
import android.graphics.Rect;
import android.graphics.RectF;
import android.graphics.SurfaceTexture;
import android.hardware.camera2.CameraAccessException;
import android.hardware.camera2.CameraCaptureSession;
import android.hardware.camera2.CameraCharacteristics;
import android.hardware.camera2.CameraDevice;
import android.hardware.camera2.CameraManager;
import android.hardware.camera2.CameraMetadata;
import android.hardware.camera2.CaptureRequest;
import android.hardware.camera2.CaptureResult;
import android.hardware.camera2.TotalCaptureResult;
import android.hardware.camera2.params.MeteringRectangle;
import android.hardware.camera2.params.StreamConfigurationMap;
import android.media.ImageReader;
import android.os.Bundle;
import android.os.Handler;
import android.os.HandlerThread;
import android.util.DisplayMetrics;
import android.util.Log;
import android.util.Size;
import android.util.SparseIntArray;
import android.view.Surface;
import android.view.TextureView;
import android.view.View;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.ProgressBar;
import android.widget.RelativeLayout;
import android.widget.TextView;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.Comparator;
import java.util.List;
import java.util.concurrent.Semaphore;
import java.util.concurrent.TimeUnit;
import static android.content.ContentValues.TAG;
import static java.lang.Math.abs;
import static java.lang.Math.pow;
public class camera_ocr extends AppCompatActivity {
static int CAMERA_FRONT_BACK = 0;
private MeteringRectangle[] mAFRegions = AutoFocusHelperLib.getZeroWeightRegion();
private MeteringRectangle[] mAERegions = AutoFocusHelperLib.getZeroWeightRegion();
private Rect mCropRegion;
private Boolean cameraReady = false;
private static String versionName = "V7.7.5";
private int flag = 0;
private int[] position;
private View linearLayout;
private static final String TAG = "Camera Error";
private int[] focusMode = {};
private CameraCharacteristics cameraChar;
private Fragment fragment;
private Bitmap output;
private static int totalRotation;
ImageButton camera;
ImageButton flashLight ;
Button btnSnapPhoto;
private static Boolean displayResult = false;
Boolean cameraGranted = false;
public static String licenseKey ;
ValueAnimator animation = null ;
private int[] boxPosition = new int[4];
private float [] cardPosation = new float[8];
private static final int CAMERA_PERMISSION = 123;
private String mCameraId;
private Size mPreviewSize;
private CaptureRequest.Builder mCaptureRequestBuilder;
private HandlerThread mBackgroundHandlerThread;
private Handler mBackgroundHandler;
private static SparseIntArray ORIENTATIONS = new SparseIntArray();
private float screenWidth ;
private float screenHeight ;
CameraCharacteristics characteristics;
private CaptureRequest mPreviewRequest;
private CameraCaptureSession mCaptureSession;
private int mSensorOrientation;
private CaptureRequest.Builder mPreviewRequestBuilder;
private int mState = STATE_PREVIEW;
private ImageReader mImageReader;
private float cameraFocusDistance = 4.5f ;
static {
ORIENTATIONS.append(Surface.ROTATION_0, 0);
ORIENTATIONS.append(Surface.ROTATION_90, 90);
ORIENTATIONS.append(Surface.ROTATION_180, 180);
ORIENTATIONS.append(Surface.ROTATION_270, 270);
}
private static CameraDevice mCameraDevice;
/**
* Camera state: Showing camera preview.
*/
private static final int STATE_PREVIEW = 0;
/**
* Camera state: Waiting for the focus to be locked.
*/
private static final int STATE_WAITING_LOCK = 1;
/**
* Camera state: Waiting for the exposure to be precapture state.
*/
private static final int STATE_WAITING_PRECAPTURE = 2;
/**
* Camera state: Waiting for the exposure state to be something other than precapture.
*/
private static final int STATE_WAITING_NON_PRECAPTURE = 3;
/**
* Camera state: Picture was taken.
*/
private static final int STATE_PICTURE_TAKEN = 4;
/**
* Max preview width that is guaranteed by Camera2 API
*/
private static final int MAX_PREVIEW_WIDTH = 1920;
/**
* Max preview height that is guaranteed by Camera2 API
*/
private static final int MAX_PREVIEW_HEIGHT = 1080;
private Semaphore mCameraOpenCloseLock = new Semaphore(1);
CameraManager manager = null ;
private AutoFitTextureViewLib mTextureView;
#SuppressLint("MissingPermission")
private void openCamera(int width, int height, int camera_front_back) {
setUpCameraOutputs(width, height, camera_front_back);
configureTransform(width, height);
manager = (CameraManager) getSystemService(Context.CAMERA_SERVICE);
try {
if (!mCameraOpenCloseLock.tryAcquire(2500, TimeUnit.MILLISECONDS)) {
throw new RuntimeException("Time out waiting to lock camera opening.");
}
manager.openCamera(mCameraId, mStateCallback, mBackgroundHandler);
// getCurrentPhoto();
} catch (CameraAccessException e) {
e.printStackTrace();
} catch (InterruptedException e) {
throw new RuntimeException("Interrupted while trying to lock camera opening.", e);
}
}
static class CompareSizesByArea implements Comparator<Size> {
#Override
public int compare(Size lhs, Size rhs) {
// We cast here to ensure the multiplications won't overflow
return Long.signum((long) lhs.getWidth() * lhs.getHeight() -
(long) rhs.getWidth() * rhs.getHeight());
}
}
private static Size chooseOptimalSize(Size[] choices, int textureViewWidth,
int textureViewHeight, int maxWidth, int maxHeight, Size aspectRatio) {
// Collect the supported resolutions that are at least as big as the preview Surface
List<Size> bigEnough = new ArrayList<>();
// Collect the supported resolutions that are smaller than the preview Surface
List<Size> notBigEnough = new ArrayList<>();
int w = aspectRatio.getWidth();
int h = aspectRatio.getHeight();
for (Size option : choices) {
if (option.getWidth() <= maxWidth && option.getHeight() <= maxHeight &&
option.getHeight() == option.getWidth() * h / w) {
if (option.getWidth() >= textureViewWidth &&
option.getHeight() >= textureViewHeight) {
bigEnough.add(option);
} else {
notBigEnough.add(option);
}
}
}
// Pick the smallest of those big enough. If there is no one big enough, pick the
// largest of those not big enough.
if (bigEnough.size() > 0) {
return Collections.min(bigEnough, new CompareSizesByArea());
} else if (notBigEnough.size() > 0) {
return Collections.max(notBigEnough, new CompareSizesByArea());
} else {
Log.e(TAG, "Couldn't find any suitable preview size");
return choices[0];
}
}
private void setUpCameraOutputs(int width, int height, int camera_front_back) {
CameraManager manager = (CameraManager) getSystemService(Context.CAMERA_SERVICE);
try {
String cameraId = manager.getCameraIdList()[camera_front_back];
characteristics = manager.getCameraCharacteristics(cameraId);
StreamConfigurationMap map = characteristics.get(
CameraCharacteristics.SCALER_STREAM_CONFIGURATION_MAP);
if (map == null) {
return;
}
// For still image captures, we use the largest available size.
Size largest = Collections.max(
Arrays.asList(map.getOutputSizes(ImageFormat.JPEG)),
new CompareSizesByArea());
mImageReader = ImageReader.newInstance(largest.getWidth(), largest.getHeight(),
ImageFormat.JPEG, /*maxImages*/2);
// Find out if we need to swap dimension to get the preview size relative to sensor
// coordinate.
int displayRotation = getWindowManager().getDefaultDisplay().getRotation();
//noinspection ConstantConditions
mSensorOrientation = characteristics.get(CameraCharacteristics.SENSOR_ORIENTATION);
boolean swappedDimensions = false;
switch (displayRotation) {
case Surface.ROTATION_0:
case Surface.ROTATION_180:
if (mSensorOrientation == 90 || mSensorOrientation == 270) {
swappedDimensions = true;
}
break;
case Surface.ROTATION_90:
case Surface.ROTATION_270:
if (mSensorOrientation == 0 || mSensorOrientation == 180) {
swappedDimensions = true;
}
break;
default:
Log.e(TAG, "Display rotation is invalid: " + displayRotation);
}
Point displaySize = new Point();
getWindowManager().getDefaultDisplay().getSize(displaySize);
int rotatedPreviewWidth = width;
int rotatedPreviewHeight = height;
int maxPreviewWidth = displaySize.x;
int maxPreviewHeight = displaySize.y;
if (swappedDimensions) {
rotatedPreviewWidth = height;
rotatedPreviewHeight = width;
maxPreviewWidth = displaySize.y;
maxPreviewHeight = displaySize.x;
}
if (maxPreviewWidth > MAX_PREVIEW_WIDTH) {
maxPreviewWidth = MAX_PREVIEW_WIDTH;
}
if (maxPreviewHeight > MAX_PREVIEW_HEIGHT) {
maxPreviewHeight = MAX_PREVIEW_HEIGHT;
}
// Danger, W.R.! Attempting to use too large a preview size could exceed the camera
// bus' bandwidth limitation, resulting in gorgeous previews but the storage of
// garbage capture data.
mPreviewSize = chooseOptimalSize(map.getOutputSizes(SurfaceTexture.class),
rotatedPreviewWidth, rotatedPreviewHeight, maxPreviewWidth,
maxPreviewHeight, largest);
// We fit the aspect ratio of TextureView to the size of preview we picked.
int orientation = getResources().getConfiguration().orientation;
if (orientation == Configuration.ORIENTATION_LANDSCAPE) {
mTextureView.setAspectRatio(
mPreviewSize.getWidth(), mPreviewSize.getHeight());
} else {
mTextureView.setAspectRatio(
mPreviewSize.getHeight(), mPreviewSize.getWidth());
}
mCropRegion = AutoFocusHelperLib.cropRegionForZoom(characteristics,
CameraConstantsLib.ZOOM_REGION_DEFAULT);
mCameraId = cameraId;
return;
} catch (CameraAccessException e) {
e.printStackTrace();
} catch (NullPointerException e) {
// Currently an NPE is thrown when the Camera2API is used but not supported on the
// device this code runs.
}
}
private void configureTransform(int viewWidth, int viewHeight) {
if (null == mTextureView || null == mPreviewSize) {
return;
}
int rotation = getWindowManager().getDefaultDisplay().getRotation();
Matrix matrix = new Matrix();
RectF viewRect = new RectF(0, 0, viewWidth, viewHeight);
RectF bufferRect = new RectF(0, 0, mPreviewSize.getHeight(), mPreviewSize.getWidth());
matrix.setRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.FILL);
float centerX = viewRect.centerX();
float centerY = viewRect.centerY();
if (Surface.ROTATION_90 == rotation || Surface.ROTATION_270 == rotation) {
bufferRect.offset(centerX - bufferRect.centerX(), centerY - bufferRect.centerY());
matrix.setRectToRect(viewRect, bufferRect, Matrix.ScaleToFit.FILL);
float scale = Math.max(
(float) viewHeight / mPreviewSize.getHeight(),
(float) viewWidth / mPreviewSize.getWidth());
matrix.postScale(scale, scale, centerX, centerY);
matrix.postRotate(90 * (rotation - 2), centerX, centerY);
} else if (Surface.ROTATION_180 == rotation) {
matrix.postRotate(180, centerX, centerY);
}
mTextureView.setTransform(matrix);
}
private final CameraDevice.StateCallback mStateCallback = new CameraDevice.StateCallback() {
#Override
public void onOpened(#NonNull CameraDevice cameraDevice) {
// This method is called when the camera is opened. We start camera preview here.
mCameraOpenCloseLock.release();
mCameraDevice = cameraDevice;
createCameraPreviewSession();
}
#Override
public void onDisconnected(#NonNull CameraDevice cameraDevice) {
mCameraOpenCloseLock.release();
cameraDevice.close();
mCameraDevice = null;
}
#Override
public void onError(#NonNull CameraDevice cameraDevice, int error) {
mCameraOpenCloseLock.release();
cameraDevice.close();
mCameraDevice = null;
finish();
}
};
private void createCameraPreviewSession() {
try {
final int[] x = new int[1];
final int[] y = new int[1];
SurfaceTexture texture = mTextureView.getSurfaceTexture();
assert texture != null;
// We configure the size of default buffer to be the size of camera preview we want.
texture.setDefaultBufferSize(mPreviewSize.getWidth(), mPreviewSize.getHeight());
// This is the output Surface we need to start preview.
Surface surface = new Surface(texture);
// We set up a CaptureRequest.Builder with the output Surface.
mPreviewRequestBuilder
= mCameraDevice.createCaptureRequest(CameraDevice.TEMPLATE_PREVIEW);
mPreviewRequestBuilder.addTarget(surface);
// Here, we create a CameraCaptureSession for camera preview.
mCameraDevice.createCaptureSession(Arrays.asList(surface, mImageReader.getSurface()),
new CameraCaptureSession.StateCallback() {
#Override
public void onConfigured(#NonNull CameraCaptureSession cameraCaptureSession) {
// The camera is already closed
if (null == mCameraDevice) {
return;
}
// GET SCREEN SIZE
MeteringRectangle screenSize[] = mPreviewRequestBuilder.get(CaptureRequest.CONTROL_AF_REGIONS);
// When the session is ready, we start displaying the preview.
mCaptureSession = cameraCaptureSession;
long loopTime = System.currentTimeMillis();
long time = System.currentTimeMillis();
// GET SCREEN WIDTH
DisplayMetrics displayMetrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
screenWidth = screenSize[0].getWidth();
screenHeight = screenSize[0].getHeight();
// CREATE NEW FOCUS POINT
// testing
for(int i = 0; i < 1 ; i++) {
setManualFocusAt(x[0], y[0]);
// GET CURRENT FOCUS POINT
MeteringRectangle currentFocusArea[] = mPreviewRequestBuilder.get(CaptureRequest.CONTROL_AF_REGIONS);
time = System.currentTimeMillis();
// WAIT FOR FOCUS TO READY
while((System.currentTimeMillis() - time) < 800){
Log.d("focus time:" , Float.toString(System.currentTimeMillis() - time));
Log.e("focus time:" , Float.toString(System.currentTimeMillis() - time));
Log.wtf("focus time:" , Float.toString(System.currentTimeMillis() - time));
};
}
long x = System.currentTimeMillis() - loopTime;
Log.d("focus time:" , Float.toString(x));
cameraReady = true;
}
#Override
public void onConfigureFailed(
#NonNull CameraCaptureSession cameraCaptureSession) {
}
}, null
);
} catch (CameraAccessException e) {
e.printStackTrace();
}
}
/**
* Initiate a still image capture.
*/
void setManualFocusAt(int x, int y) {
int mDisplayOrientation = getWindowManager().getDefaultDisplay().getRotation();
float points[] = new float[2];
points[0] = (float) x / mTextureView.getWidth();
points[1] = (float) y / mTextureView.getHeight();
Matrix rotationMatrix = new Matrix();
rotationMatrix.setRotate(mDisplayOrientation, 0.5f, 0.5f);
rotationMatrix.mapPoints(points);
if (mPreviewRequestBuilder != null) {
// mIsManualFocusing = true;
updateManualFocus(points[0], points[1]);
if (mCaptureSession != null) {
try {
mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER,
CaptureRequest.CONTROL_AF_TRIGGER_START);
mCaptureSession.capture(mPreviewRequestBuilder.build(), null, mBackgroundHandler);
mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_TRIGGER,
CaptureRequest.CONTROL_AF_TRIGGER_IDLE);
mCaptureSession.setRepeatingRequest(mPreviewRequestBuilder.build(),
null, mBackgroundHandler);
} catch (CameraAccessException | IllegalStateException e) {
Log.e(TAG, "Failed to set manual focus.", e);
}
}
// resumeAutoFocusAfterManualFocus();
}
}
void updateManualFocus(float x, float y) {
#SuppressWarnings("ConstantConditions")
int sensorOrientation = characteristics.get(CameraCharacteristics.SENSOR_ORIENTATION);
mAFRegions = AutoFocusHelperLib.afRegionsForNormalizedCoord(x, y, mCropRegion, sensorOrientation);
mAERegions = AutoFocusHelperLib.aeRegionsForNormalizedCoord(x, y, mCropRegion, sensorOrientation);
mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_REGIONS, mAFRegions);
mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AE_REGIONS, mAERegions);
// mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_MODE, CaptureRequest.CONTROL_AF_MODE_AUTO);
// fixe distance focuse // testing
mPreviewRequestBuilder.set(CaptureRequest.CONTROL_AF_MODE,CaptureRequest.CONTROL_AF_MODE_OFF);
mPreviewRequestBuilder.set(CaptureRequest.LENS_FOCUS_DISTANCE, cameraFocusDistance);
}
/**
* Lock the focus as the first step for a still image capture.
*/
private void closeCamera() {
try {
mCameraOpenCloseLock.acquire();
if (null != mCaptureSession) {
mCaptureSession.close();
mCaptureSession = null;
}
if (null != mCameraDevice) {
mCameraDevice.close();
mCameraDevice = null;
}
if (null != mImageReader) {
mImageReader.close();
mImageReader = null;
}
} catch (InterruptedException e) {
throw new RuntimeException("Interrupted while trying to lock camera closing.", e);
} finally {
mCameraOpenCloseLock.release();
}
}
private final TextureView.SurfaceTextureListener mSurfaceTextureListener
= new TextureView.SurfaceTextureListener() {
#Override
public void onSurfaceTextureAvailable(SurfaceTexture texture, int width, int height) {
openCamera(width, height,CAMERA_FRONT_BACK);
}
#Override
public void onSurfaceTextureSizeChanged(SurfaceTexture texture, int width, int height) {
configureTransform(width, height);
}
#Override
public boolean onSurfaceTextureDestroyed(SurfaceTexture texture) {
return true;
}
#Override
public void onSurfaceTextureUpdated(SurfaceTexture texture) {
}
};
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_camera_ocr);
mTextureView = findViewById(R.id.textureView);
}
#Override
protected void onResume(){
super.onResume();
if (mTextureView.isAvailable()) {
openCamera(mTextureView.getWidth(), mTextureView.getHeight(),CAMERA_FRONT_BACK);
} else {
mTextureView.setSurfaceTextureListener(mSurfaceTextureListener);
}
}
}
It looks like you got height and width backwards on this line:
RectF bufferRect = new RectF(0, 0, mPreviewSize.getHeight(), mPreviewSize.getWidth());
Try the following and you should get the correct result:
RectF bufferRect = new RectF(0, 0, mPreviewSize.getWidth(), mPreviewSize.getHeight());
I'm trying to achieve this custom wave animation with circle in the middle of the wave.
Below is my custom view. It runs in a different direction and the draw has a line in the middle of the wave that results in a bad UX.
I try to follow some related tutorials but I cannot get the same animation.
If there is any library o code sample to follow it could help me a lot.
Thanks.
import android.animation.ValueAnimator;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Path;
import android.graphics.Rect;
import android.graphics.Region;
import android.util.AttributeSet;
import android.view.View;
import android.view.animation.LinearInterpolator;
import com.guille.stressmeterapp.R;
import org.jetbrains.annotations.Nullable;
public class WaveCustomView extends View {
private int mWidth = 0;
private int mHeight = 0;
private Path path;
private Paint paint;
private int waveHeight = 300;
private int waveWidth = 600;
private int originalY = 750;
private Region region;
private int dx = 0;
private Bitmap mBitmap;
private int animationDuration = 3000;
public WaveCustomView(Context context) {
super(context, null);
initUi();
}
public WaveCustomView(Context context, #Nullable AttributeSet attrs) {
super(context, attrs, 0);
initUi();
}
public WaveCustomView(Context context, #Nullable AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
initUi();
}
private void initUi() {
paint = new Paint();
paint.setAntiAlias(true);
paint.setColor(Color.parseColor("#000000"));
paint.setStyle(Paint.Style.STROKE);
paint.setStrokeWidth(15);
path = new Path();
mBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.circle);
}
#Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
super.onMeasure(widthMeasureSpec, heightMeasureSpec);
int widthMode = MeasureSpec.getMode(widthMeasureSpec);
int widthSize = MeasureSpec.getSize(widthMeasureSpec);
int heightMode = MeasureSpec.getMode(heightMeasureSpec);
int heightSize = MeasureSpec.getSize(heightMeasureSpec);
int width;
int height;
if (widthMode == MeasureSpec.EXACTLY) {
width = widthSize;
} else {
int desired = (int) (getPaddingLeft() + getPaddingRight());
width = desired;
}
if (heightMode == MeasureSpec.EXACTLY) {
height = heightSize;
} else {
int desired = (int) (getPaddingTop() + getPaddingBottom());
height = desired;
}
mWidth = width;
mHeight = height;
waveWidth = mWidth / 2;
setMeasuredDimension(width, height);
}
#Override
protected void onDraw(Canvas canvas) {
super.onDraw(canvas);
canvas.drawPath(path, paint);
setDrawData();
Rect bounds = region.getBounds();
if (bounds.top < originalY) {
canvas.drawBitmap(mBitmap, bounds.right - (mBitmap.getWidth() >> 1), bounds.top - (mBitmap.getHeight() >> 1), paint);
} else {
canvas.drawBitmap(mBitmap, bounds.right - (mBitmap.getWidth() >> 1), bounds.bottom - (mBitmap.getHeight() >> 1), paint);
}
}
private void setDrawData() {
path.reset();
int halfWaveWidth = waveWidth / 2;
path.moveTo(-waveWidth + dx, originalY);
for (int i = -waveWidth; i < mWidth + waveWidth; i = i + waveWidth) {
path.rQuadTo(halfWaveWidth >> 1, -waveHeight, halfWaveWidth, 0);
path.rQuadTo(halfWaveWidth >> 1, waveHeight, halfWaveWidth, 0);
}
region = new Region();
Region clip = new Region((int) (mWidth / 2 - 0.1), 0, mWidth / 2, mHeight * 2);
region.setPath(path, clip);
path.close();
}
public void startAnimate() {
ValueAnimator animator = ValueAnimator.ofFloat(0, 1);
animator.setRepeatCount(ValueAnimator.INFINITE);
animator.setInterpolator(new LinearInterpolator());
animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {
#Override
public void onAnimationUpdate(ValueAnimator valueAnimator) {
float factor = (float) valueAnimator.getAnimatedValue();
dx = (int) ((waveWidth) * factor);
invalidate();
}
});
animator.setDuration(animationDuration);
animator.start();
}
Your code looks OK. Just remove this line from setDrawData method.
path.close();
This line closes path. It means it connect path begginnig with path end. That's why you see line in the middle of the wave.
Here is result without middle line:
If you want to change the direction of animation just change sign of dx variable. Change this:
dx = (int) ((waveWidth) * factor);
To this:
dx = - (int) (waveWidth * factor);
Or instead of this:
path.moveTo(-waveWidth + dx, originalY);
Do this:
path.moveTo(-waveWidth - dx, originalY);
Final result:
I made the snake and ladder game in android studio. I want to change the height and width of the buttons, and I want to add one more button for exit. Right now I am using only one .png file for all buttons. So, How to change it? When i add the fourth button my application crash and its shows the error.
Check this image
Error
FATAL EXCEPTION: main
Process: com.sixtinbyte.snakeandladder, PID: 25115
java.lang.NullPointerException: Attempt to invoke virtual method 'void com.sixtinbyte.snakeandladder.components.GameButton.onDraw(android.graphics.Canvas)' on a null object reference
at com.sixtinbyte.snakeandladder.HomeView.onDraw(HomeView.java:151)
HomeView. java (This are the java file where i want to change because this is the homescreen of the game)
import android.content.Context;
import android.content.Intent;
import android.content.res.Resources;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.Point;
import android.graphics.drawable.Drawable;
import android.view.MotionEvent;
import android.view.View;
import com.sixtinbyte.snakeandladder.components.GameButton;
import com.sixtinbyte.snakeandladder.constant.Sound;
public class HomeView extends View {
public Context ctx;
private Resources res;
private String refText ="Snakes and Ladders";
private GameButton gButton, sButton, hButton,eButton;
private Bitmap logo, play, settings, help, exit;
private int hWidth, hHeight;
private Point touchCoordinate = new Point();
public HomeView(Context ctx) {
super(ctx);
this.ctx = ctx;
res = getResources();
logo = BitmapFactory.decodeResource(res, R.drawable.snakes_n_ladders);
}
#Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
// TODO: Implement this method
super.onSizeChanged(w, h, oldw, oldh);
hWidth = w;
hHeight = h;
preparePlayButton();
prepareSettingsButton();
prepareHelpButton();
// prepareExitButton();
}
private void preparePlayButton() {
String text =" ";
int textSize = 40;
Point po = getBmpMeasureFrom(text, refText, textSize);
play = getBitmap(R.drawable.play, po.x, po.y);
gButton = new GameButton(play, text, textSize);
gButton.setLocation((hWidth - po.x) / 2, (int)(hHeight * 0.6f));
gButton.setTextColor(Color.CYAN);
}
private void prepareSettingsButton() {
String text =" ";
int textSize = 40;
Point po = getBmpMeasureFrom(text, refText, textSize);
settings = getBitmap(R.drawable.play, po.x, po.y);
sButton = new GameButton(settings, text, textSize);
sButton.setLocation((hWidth - po.x) / 2, (int)(hHeight * 0.7f));
sButton.setTextColor(Color.CYAN);
}
//
//
private void prepareHelpButton() {
String text =" ";
int textSize = 40;
Point po = getBmpMeasureFrom(text, refText, textSize);
help = getBitmap(R.drawable.play, po.x, po.y);
hButton = new GameButton(help, text, textSize);
hButton.setLocation((hWidth - po.x) / 2, (int)(hHeight * 0.8f));
hButton.setTextColor(Color.CYAN);
}
// private void prepareExitButton() {
// String text =" ";
// int textSize = 40;
// Point po = getBmpMeasureFrom(text, refText, textSize);
// help = getBitmap(R.drawable.play, po.x, po.y);
// hButton = new GameButton(help, text, textSize);
// hButton.setLocation((hWidth - po.x) / 2, (int)(hHeight * 0.8f));
// hButton.setTextColor(Color.CYAN);
//
// }
private Point getBmpMeasureFrom(String text, String refText, int textSize) {
Point p = new Point();
Paint pa = new Paint();
pa.setTextSize(textSize);
p.y = (int)(pa.getTextSize() * 2.2f);
String tt = refText.length() > text.length() ?refText: text;
p.x = (int) (pa.measureText(tt) * 1.2f);
return p;
}
#Override
public boolean onTouchEvent(MotionEvent event) {
// TODO: Implement this method
int evt = event.getAction();
touchCoordinate.x = (int)event.getX();
touchCoordinate.y = (int)event.getY();
switch (evt) {
case MotionEvent.ACTION_DOWN:
MainActivity.playSound(Sound.BUTTON_CLICK_1, false);
break;
case MotionEvent.ACTION_MOVE:
break;
case MotionEvent.ACTION_UP:
// MainActivity.stopSound();
if (gButton.contains(touchCoordinate)) {
Intent intent = new Intent(ctx, GameActivity.class);
ctx. startActivity(intent);
}
if (sButton.contains(touchCoordinate)) {
Intent intent = new Intent(ctx, Playing.class);
ctx.startActivity(intent);
}
if (hButton.contains(touchCoordinate)) {
Intent intent = new Intent(ctx, Aboutus.class);
ctx. startActivity(intent);
}
// if(eButton.contains(touchCoordinate)){
// Intent intent = new Intent(ctx, Exit.class);
// ctx.startActivity(intent);
// }
break;
}
return true;
}
#Override
protected void onDraw(Canvas canvas) {
// TODO: Implement this method
super.onDraw(canvas);
canvas.drawColor(Color.CYAN);
canvas.drawBitmap(logo, (hWidth - logo.getWidth()) / 2, (int)((hHeight - logo.getHeight()) * 0.1), null);
gButton.onDraw(canvas);
sButton.onDraw(canvas);
hButton.onDraw(canvas);
// eButton.onDraw(canvas);
// Paint p= new Paint();
// p.setColor(Color.RED);
// canvas.drawRect(100, 200, 400, 500, p);
invalidate();
}
private Bitmap getBitmap(int drawableRes, int width, int height) {
Drawable d = res.getDrawable(drawableRes);
Canvas c = new Canvas();
Bitmap b = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
c.setBitmap(b);
d.setBounds(0, 0,width, height);
d.draw(c);
return b;
}
}
The prepareExitButton method is assigning hButton, I think it should be assigning eButton. That's why you're getting a NullPointerException there. Also, you're setting the y-coordinate to (int)(hHeight * 0.8f)) which means it will overlap with the help-button.
You may need to alter the GameButton class to get the ability to adjust the button's size. In particular, you'll want to change onDraw to draw the button in the specified size.
##MyDraw.java##
This part of the code is where the bitmap image is created, the bitmap sits on the canvas, form this point I want to be able to save the image that is created on the bitmap, I have a drop down menu in the MainActivity with a 'save' option.
package com.example.save_file;
import java.util.Random;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.RectF;
import android.view.View;
import android.view.MotionEvent;
public class MyDraw extends View
{
Canvas c;
Bitmap bmp;
Paint paint;
Random g;
float X, Y;
public MyDraw (Context context)
{
super(context);
g = new Random ();
Bitmap.Config conf = Bitmap.Config.ARGB_8888;
bmp = Bitmap.createBitmap (1100, 1800, conf);
paint = new Paint ();
paint.setStyle (Paint.Style.STROKE);
paint.setColor (Color.WHITE);
this.setOnTouchListener (new OnTouchListener()
{
public boolean onTouch (View v, MotionEvent event)
{
int h, w, R, G, B, A;
float x, y;
c = new Canvas (bmp);
x = event.getX ();
y = event.getY ();
System.out.printf ("%f %f\n", X, Y);
paint.setAntiAlias (true);
w = g.nextInt (70)+90;
h = g.nextInt (70);
R = g.nextInt (255);
G = g.nextInt (255);
B = g.nextInt (255);
A = g.nextInt (255);
paint.setStyle (Paint.Style.FILL);
paint.setColor ((A << 24) + (R << 16) + (G << 8) + (B << 0));
if (MyApp.fill == 0) // FILLED SHAPE
{
paint.setStyle (Paint.Style.FILL);
paint.setColor ((A << 24) + (R << 16) + (G << 8) + (B << 0));
if (MyApp.shape == 0)
c.drawRect (x, y, x + w, y + h, paint);
else
c.drawOval(new RectF (x, y, x + w, y + h), paint);
paint.setStyle (Paint.Style.STROKE);
paint.setColor (Color.BLACK);
if (MyApp.shape == 0)
c.drawRect (x, y, x + w, y + h, paint);
else
c.drawOval(new RectF (x, y, x + w, y + h), paint);
}
else // OUTLINED SHAPE
{
paint.setStyle (Paint.Style.STROKE);
paint.setColor ((A << 24) + (R << 16) + (G << 8) + (B << 0));
if (MyApp.shape == 0)
c.drawRect (x, y, x + w, y + h, paint);
else
c.drawOval(new RectF (x, y, x + w, y + h), paint);
}
paint.setColor (Color.WHITE);
invalidate ();
return true;
}
});
}
#Override
protected void onDraw (Canvas c)
{
super.onDraw (c);
c.drawBitmap (bmp, 0, 0, paint);
}
}
##MyApp.java##
package com.example.save_file;
public class MyApp
{
static public int shape = 0;
static public int fill = 0;
}
##MainActivity.java##
This is the part of the code where the menu code is, I want to be able to pres the save button here and for the bitmap image to be saved to the phone, preferably a standard gallery folder.
package com.example.save_file;
import java.io.File;
import java.io.FileOutputStream;
import java.util.Random;
import android.os.Bundle;
import android.os.Environment;
import android.app.Activity;
import android.view.Menu;
import android.view.MenuItem;
import android.os.Bundle;
import android.app.Activity;
import android.graphics.Bitmap;
import android.graphics.Bitmap.CompressFormat;
import android.view.Menu;
//import android.gesture.GestureOverlayView;
public class MainActivity extends Activity {
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
MyDraw d = new MyDraw (this);
setContentView (d);
}
#Override
public boolean onCreateOptionsMenu(Menu menu)
{
super.onCreateOptionsMenu (menu);
MenuItem menu1 = menu.add(0, 0, Menu.NONE, "Filled Shape");
MenuItem menu2 = menu.add(0, 1, Menu.NONE, "Outline Shape");
MenuItem menu3 = menu.add(0, 2, Menu.NONE, "Rectangle");
MenuItem menu4 = menu.add(0, 3, Menu.NONE, "Oval");
MenuItem menu5 = menu.add(0, 4, Menu.NONE, "Save!");
return true;
}
public boolean onOptionsItemSelected(MenuItem item)
{
switch (item.getItemId())
{
case 0:
MyApp.fill = 0;
return true;
case 1:
MyApp.fill = 1;
return true;
case 2:
MyApp.shape = 0;
return true;
case 3:
MyApp.shape = 1;
return true;
default:
return super.onOptionsItemSelected(item);
case 4:
bmp.setDrawingCacheEnabled(true);
Bitmap bitmap = bmp.getDrawingCache();
File root = Environment.getExternalStorageDirectory();
File file = new
File(root.getAbsolutePath()+"/DCIM/Camera/img.jpg");
try
{
file.createNewFile();
FileOutputStream ostream = new FileOutputStream(file);
bitmap.compress(CompressFormat.JPEG, 100, ostream);
ostream.close();
}
catch (Exception e)
{
e.printStackTrace();
}
}
}
}
I use this code to save any graphic drawed using canvas, like fingerpaint or similar, I hope can be useful for your case
Set the instance as global
MyDraw d;
#Override
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
d = new MyDraw (this);
setContentView (d);
}
And put this in the case of your onOptionsItemSelected();
case 4:
try {
Bitmap bitmap = Bitmap.createBitmap(d.getWidth(),d.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
d.draw(canvas);
File folder = new File(Environment.getExternalStorageDirectory()+ "/DCIM/Camera/");
if (!folder.exists())
folder.mkdirs();
String fileName = Environment.getExternalStorageDirectory()+ "/DCIM/Camera/img.jpg"";
if (new File(fileName).exists())
new File(fileName).delete();
OutputStream stream = new FileOutputStream(fileName);
/*
* Write bitmap to file using JPEG or PNG and 100% quality hint
* for JPEG.
*/
bitmap.compress(CompressFormat.JPEG, 100, stream);
stream.close();
} catch (Exception e) {
// TODO Auto-generated catch block
Toast.makeText(this, "Error: " + e.getMessage(),Toast.LENGTH_LONG).show();
}
break;
UPDATE:
Check that your emulated device has SD Card
Remind that you have to add the permissions to manifest
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
I'm trying to show an animated gif. By the way I'm doing it with the class Movie. But the Android Developer page dont grant info about the methods.
How can I make the gif to be resized to fit the layout?
Thanks in advance
I've been trying to do the same thing (to display animated GIF) using this method.
It works only if you specify uses-sdk android:minSdkVersion="3"
For scaling ...
package com.example.GIFShow;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Movie;
import android.graphics.Rect;
import android.util.Log;
import android.view.View;
class MYGIFView extends View {
private static final boolean twigDebug = true;
private Movie mMovie;
private long mMovieStart;
MYGIFView(Context aContext, Movie aMovie) {
super(aContext);
if (aMovie == null)
return;
mMovie = aMovie;
mMovieStart = android.os.SystemClock.uptimeMillis();
}
protected void onDraw(Canvas aCanvas) {
super.onDraw(aCanvas);
if (mMovie == null || mMovie.duration() == 0)
return;
int relTime = (int)((android.os.SystemClock.uptimeMillis() - mMovieStart)
% mMovie.duration());
mMovie.setTime(relTime);
Bitmap movieBitmap = Bitmap.createBitmap(mMovie.width(), mMovie.height(),
Bitmap.Config.ARGB_8888);
Canvas movieCanvas = new Canvas(movieBitmap);
mMovie.draw(movieCanvas, 0, 0);
Rect src = new Rect(0, 0, mMovie.width(), mMovie.height());
Rect dst = new Rect(0, 0, this.getWidth(), this.getHeight());
aCanvas.drawBitmap(movieBitmap, src, dst, null);
this.invalidate();
}
}
Now you can get and pass a Movie object to the class in one of two ways ...
Get input GIF Movie object from project drawable folder
Movie movie = Movie.decodeStream
(context.getResources().openRawResource(R.drawable.somefile));
Or get input GIF Movie object from external storage
(/mnt/sdcard ... /mnt/extSdCard ... etc)
Movie movie = null;
try {
FileInputStream stream =
new FileInputStream(Environment.getExternalStorageDirectory() +
"/somefolder/somefile.gif");
try {
byte[] byteStream = streamToBytes(stream);
movie = Movie.decodeByteArray(byteStream, 0, byteStream.length);
}
finally {
stream.close();
}
}
catch (IOException e) { }
Now set the moving GIF image / Movie object into your activity view:
View view = new MYGIFView(this, movie);
setContentView(view);
If you get the GIF image / Movie object from external storage (second example) you'll need the supporting routine:
private byte[] streamToBytes(InputStream is) {
ByteArrayOutputStream os = new ByteArrayOutputStream(1024);
byte[] buffer = new byte[1024];
int len;
try {
while ((len = is.read(buffer)) >= 0)
os.write(buffer, 0, len);
}
catch (java.io.IOException e) { }
return os.toByteArray();
}
You answer is good. It helped me alot.I have changed one thing for performance .Moved the bitmap creation to outside of ondraw
import java.io.InputStream;
import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Movie;
import android.graphics.Rect;
import android.os.SystemClock;
import android.util.AttributeSet;
import android.view.View;
public class GifView extends View {
private Movie mMovie;
InputStream mStream;
long mMoviestart;
private Context context;
public GifView(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
this.context = context;
init();
}
public GifView(Context context, AttributeSet attrs) {
super(context, attrs);
this.context = context;
init();
}
public GifView(Context context) {
super(context);
this.context = context;
init();
}
Bitmap movieBitmap = null;
private void init() {
InputStream object = this.getResources().openRawResource(
R.raw.postloadinganimation);
mMovie = Movie.decodeStream(object);// context.getResources().getAssets().open("PostLoadingAnimation.gif"));
movieBitmap = Bitmap.createBitmap(mMovie.width(),
mMovie.height(), Bitmap.Config.ARGB_8888);
}
#Override
protected void onDraw(Canvas canvas) {
canvas.drawColor(Color.TRANSPARENT);
super.onDraw(canvas);
final long now = SystemClock.uptimeMillis();
if (mMoviestart == 0) {
mMoviestart = now;
}
final int relTime = (int) ((now - mMoviestart) % mMovie.duration());
mMovie.setTime(relTime);
// mMovie.draw(canvas, 0, 0);
Canvas movieCanvas = new Canvas(movieBitmap);
mMovie.draw(movieCanvas, 0, 0);
Rect src = new Rect(0, 0, mMovie.width(), mMovie.height());
Rect dst = new Rect(0, 0, this.getWidth(), this.getHeight());
canvas.drawBitmap(movieBitmap, src, dst, null);
this.invalidate();
}
}
I know, this is very old post.
But you can try this ...
#Override
protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
if (mMovie != null) {
int movieWidth = mMovie.width();
int movieHeight = mMovie.height();
/** Calculate horizontal scaling*/
float scaleH = 1f;
int measureModeWidth = MeasureSpec.getMode(widthMeasureSpec);
if (measureModeWidth != MeasureSpec.UNSPECIFIED) {
int maximumWidth = MeasureSpec.getSize(widthMeasureSpec);
if (movieWidth > maximumWidth) {
scaleH = (float) movieWidth / (float) maximumWidth;
}else{
scaleH = (float) maximumWidth / (float) movieWidth;
}
}
/** calculate vertical scaling*/
float scaleW = 1f;
int measureModeHeight = MeasureSpec.getMode(heightMeasureSpec);
if (measureModeHeight != MeasureSpec.UNSPECIFIED) {
int maximumHeight = MeasureSpec.getSize(heightMeasureSpec);
if (movieHeight > maximumHeight) {
scaleW = (float) movieHeight / (float) maximumHeight;
}else{
scaleW = (float) maximumHeight / (float) movieHeight;
}
}
/** calculate overall scale*/
mScale = Math.max(scaleH, scaleW);
mMeasuredMovieWidth = (int) (movieWidth * mScale);
mMeasuredMovieHeight = (int) (movieHeight * mScale);
setMeasuredDimension(widthMeasureSpec, heightMeasureSpec);
} else {
/*No movie set, just set minimum available size.*/
setMeasuredDimension(getSuggestedMinimumWidth(), getSuggestedMinimumHeight());
}
}
private void drawMovieFrame(Canvas canvas) {
mMovie.setTime(mCurrentAnimationTime);
canvas.save(Canvas.MATRIX_SAVE_FLAG);
canvas.scale(mScale, mScale);
mLeft = (getWidth() - mMeasuredMovieWidth) / 2f;
mTop = (getHeight() - mMeasuredMovieHeight) / 2f;
mMovie.draw(canvas, mLeft / mScale, mTop / mScale);
canvas.restore();
}