android.graphics.Bitmap.createScaledBitmap()方法的使用及代码示例

x33g5p2x  于2022-01-16 转载在 其他  
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本文整理了Java中android.graphics.Bitmap.createScaledBitmap()方法的一些代码示例，展示了Bitmap.createScaledBitmap()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Bitmap.createScaledBitmap()方法的具体详情如下：
包路径：android.graphics.Bitmap
类名称：Bitmap
方法名：createScaledBitmap

Bitmap.createScaledBitmap介绍

暂无

代码示例

代码示例来源：origin: cymcsg/UltimateAndroid

/**
 * 将Bitmap转换成指定大小
 *
 * @param bitmap
 * @param width
 * @param height
 * @return
 */
public static Bitmap createBitmapBySize(Bitmap bitmap, int width, int height) {
  return Bitmap.createScaledBitmap(bitmap, width, height, true);
}

代码示例来源：origin: mttkay/ignition

public static Drawable scaleDrawable(Context context, int drawableResourceId, int width,
    int height) {
  Bitmap sourceBitmap = BitmapFactory.decodeResource(context.getResources(),
      drawableResourceId);
  return new BitmapDrawable(Bitmap.createScaledBitmap(sourceBitmap, width, height, true));
}

代码示例来源：origin: Zomato/AndroidPhotoFilters

@Override
public Bitmap process(Bitmap inputImage) {
  Bitmap vignette = BitmapFactory.decodeResource(context.getResources(), R.drawable.vignette);
  vignette = Bitmap.createScaledBitmap(vignette, inputImage.getWidth(), inputImage.getHeight(), true);
  Paint paint = new Paint();
  paint.setAntiAlias(true);
  paint.setAlpha(alpha);
  Canvas comboImage = new Canvas(inputImage);
  comboImage.drawBitmap(vignette, 0f, 0f, paint);
  return inputImage;
}

代码示例来源：origin: googlemaps/android-maps-utils

/**
 * Scales a Bitmap to a specified float.
 *
 * @param unscaledBitmap Unscaled bitmap image to scale.
 * @param scale Scale value. A "1.0" scale value corresponds to the original size of the Bitmap
 * @return A scaled bitmap image
 */
private static BitmapDescriptor scaleIcon(Bitmap unscaledBitmap, Double scale) {
  int width = (int) (unscaledBitmap.getWidth() * scale);
  int height = (int) (unscaledBitmap.getHeight() * scale);
  Bitmap scaledBitmap = Bitmap.createScaledBitmap(unscaledBitmap, width, height, false);
  return BitmapDescriptorFactory.fromBitmap(scaledBitmap);
}

代码示例来源：origin: Aspsine/SwipeToLoadLayout

private void createBitmaps() {
  mSky = BitmapFactory.decodeResource(getContext().getResources(), R.mipmap.yalantis_phoenix_sky);
  mSky = Bitmap.createScaledBitmap(mSky, mScreenWidth, mSkyHeight, true);
  mTown = BitmapFactory.decodeResource(getContext().getResources(), R.mipmap.yalantis_phoenix_buildings);
  mTown = Bitmap.createScaledBitmap(mTown, mScreenWidth, (int) (mScreenWidth * TOWN_RATIO), true);
  mSun = BitmapFactory.decodeResource(getContext().getResources(), R.mipmap.yalantis_phoenix_sun);
  mSun = Bitmap.createScaledBitmap(mSun, mSunSize, mSunSize, true);
}

代码示例来源：origin: lyft/scissors

@Override
protected Bitmap transform(BitmapPool bitmapPool, Bitmap source, int outWidth, int outHeight) {
  int sourceWidth = source.getWidth();
  int sourceHeight = source.getHeight();
  Rect target = CropViewExtensions.computeTargetSize(sourceWidth, sourceHeight, viewportWidth, viewportHeight);
  int targetWidth = target.width();
  int targetHeight = target.height();
  return Bitmap.createScaledBitmap(
      source,
      targetWidth,
      targetHeight,
      true);
}

代码示例来源：origin: davemorrissey/subsampling-scale-image-view

private void initialise() {
  float density = getResources().getDisplayMetrics().densityDpi;
  pin = BitmapFactory.decodeResource(this.getResources(), drawable.pushpin_blue);
  float w = (density/420f) * pin.getWidth();
  float h = (density/420f) * pin.getHeight();
  pin = Bitmap.createScaledBitmap(pin, (int)w, (int)h, true);
}

代码示例来源：origin: aporter/coursera-android

@Override
protected void onSizeChanged(int w, int h, int oldw, int oldh) {
  mParentWidth = mFrame.getWidth();
  mParentHeight = mFrame.getHeight();
  int size = Math.round(Math.min(mParentHeight, mParentWidth) / 1.33f);
  mBitmap = Bitmap.createScaledBitmap(mBitmap, size, size, false);
  mBitmapWidth = mBitmap.getWidth();
  mParentCenterX = mParentWidth / 2;
  mParentCenterY = mParentHeight / 2;
  mViewLeftY = mParentCenterX - mBitmapWidth / 2;
  mViewTopX = mParentCenterY - mBitmapWidth / 2;
}

代码示例来源：origin: lyft/scissors

@Override
public Bitmap transform(Bitmap source) {
  int sourceWidth = source.getWidth();
  int sourceHeight = source.getHeight();
  Rect target = CropViewExtensions.computeTargetSize(sourceWidth, sourceHeight, viewportWidth, viewportHeight);
  final Bitmap result = Bitmap.createScaledBitmap(
      source,
      target.width(),
      target.height(),
      true);
  if (result != source) {
    source.recycle();
  }
  return result;
}

代码示例来源：origin: Zomato/AndroidPhotoFilters

@Override
  public void onThumbnailClick(Filter filter) {
    placeHolderImageView.setImageBitmap(filter.processFilter(Bitmap.createScaledBitmap(BitmapFactory.decodeResource(this.getApplicationContext().getResources(), R.drawable.photo), 640, 640, false)));
  }
}

代码示例来源：origin: Zomato/AndroidPhotoFilters

public static List<ThumbnailItem> processThumbs(Context context) {
  for (ThumbnailItem thumb : filterThumbs) {
    // scaling down the image
    float size = context.getResources().getDimension(R.dimen.thumbnail_size);
    thumb.image = Bitmap.createScaledBitmap(thumb.image, (int) size, (int) size, false);
    thumb.image = thumb.filter.processFilter(thumb.image);
    //cropping circle
    thumb.image = GeneralUtils.generateCircularBitmap(thumb.image);
    processedThumbs.add(thumb);
  }
  return processedThumbs;
}

代码示例来源：origin: lyft/scissors

@Override
  public void display(Bitmap source, ImageAware imageAware, LoadedFrom loadedFrom) {
    int sourceWidth = source.getWidth();
    int sourceHeight = source.getHeight();

    Rect target = CropViewExtensions.computeTargetSize(sourceWidth, sourceHeight, viewportWidth, viewportHeight);
    final Bitmap result = Bitmap.createScaledBitmap(
        source,
        target.width(),
        target.height(),
        true);

    if (result != source) {
      source.recycle();
    }

    imageAware.setImageBitmap(result);
  }
}

代码示例来源：origin: jeasonlzy/okhttp-OkGo

private Bitmap parse(byte[] byteArray) throws OutOfMemoryError {
  BitmapFactory.Options decodeOptions = new BitmapFactory.Options();
  Bitmap bitmap;
  if (maxWidth == 0 && maxHeight == 0) {
    decodeOptions.inPreferredConfig = decodeConfig;
    bitmap = BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length, decodeOptions);
  } else {
    decodeOptions.inJustDecodeBounds = true;
    BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length, decodeOptions);
    int actualWidth = decodeOptions.outWidth;
    int actualHeight = decodeOptions.outHeight;
    int desiredWidth = getResizedDimension(maxWidth, maxHeight, actualWidth, actualHeight, scaleType);
    int desiredHeight = getResizedDimension(maxHeight, maxWidth, actualHeight, actualWidth, scaleType);
    decodeOptions.inJustDecodeBounds = false;
    decodeOptions.inSampleSize = findBestSampleSize(actualWidth, actualHeight, desiredWidth, desiredHeight);
    Bitmap tempBitmap = BitmapFactory.decodeByteArray(byteArray, 0, byteArray.length, decodeOptions);
    if (tempBitmap != null && (tempBitmap.getWidth() > desiredWidth || tempBitmap.getHeight() > desiredHeight)) {
      bitmap = Bitmap.createScaledBitmap(tempBitmap, desiredWidth, desiredHeight, true);
      tempBitmap.recycle();
    } else {
      bitmap = tempBitmap;
    }
  }
  return bitmap;
}

代码示例来源：origin: bumptech/glide

private Bitmap decodeBitmap() {
  Context context = InstrumentationRegistry.getTargetContext();
  BitmapFactory.Options options = new BitmapFactory.Options();
  options.inScaled = false;
  int resourceId = ResourceIds.raw.canonical;
  Bitmap result = BitmapFactory.decodeResource(context.getResources(), resourceId, options);
  if (scaleFactor != null) {
   result = Bitmap.createScaledBitmap(
     result,
     (int) (result.getWidth() * scaleFactor),
     (int) (result.getHeight() * scaleFactor),
     /*filter=*/false);
  }
  // Make sure the Bitmap is immutable.
  return result;
 }
}

代码示例来源：origin: Zomato/AndroidPhotoFilters

private void initUIWidgets() {
  thumbListView = (RecyclerView) findViewById(R.id.thumbnails);
  placeHolderImageView = (ImageView) findViewById(R.id.place_holder_imageview);
  placeHolderImageView.setImageBitmap(Bitmap.createScaledBitmap(BitmapFactory.decodeResource(this.getApplicationContext().getResources(), R.drawable.photo), 640, 640, false));
  initHorizontalList();
}

代码示例来源：origin: Rajawali/Rajawali

private void loadGIF() {
  Context context = TextureManager.getInstance().getContext();
  mMovie = Movie.decodeStream(context.getResources().openRawResource(mResourceId));
  mWidth = mMovie.width();
  mHeight = mMovie.height();
  
  mGIFBitmap = Bitmap.createBitmap(mWidth, mHeight, Config.ARGB_8888);
  mCanvas = new Canvas(mGIFBitmap);
  mMovie.draw(mCanvas, 0, 0);
  mBitmap = Bitmap.createScaledBitmap(mGIFBitmap, mTextureSize, mTextureSize, false);
}

代码示例来源：origin: robolectric/robolectric

@Test
public void bitmapsAreReused() {
 Bitmap b = Bitmap.createBitmap(10, 10, Bitmap.Config.ARGB_8888);
 Bitmap b1 = Bitmap.createBitmap(b, 0, 0, 10, 10);
 assertThat(b1).isSameAs(b);
 Bitmap b2 = Bitmap.createBitmap(b, 0, 0, 10, 10, null, false);
 assertThat(b2).isSameAs(b);
 Bitmap b3 = Bitmap.createScaledBitmap(b, 10, 10, false);
 assertThat(b3).isSameAs(b);
}

代码示例来源：origin: robolectric/robolectric

@Test
public void shouldCreateScaledBitmap() throws Exception {
 Bitmap originalBitmap = create("Original bitmap");
 Bitmap scaledBitmap = Bitmap.createScaledBitmap(originalBitmap, 100, 200, false);
 assertThat(shadowOf(scaledBitmap).getDescription())
   .isEqualTo("Original bitmap scaled to 100 x 200");
 assertThat(scaledBitmap.getWidth()).isEqualTo(100);
 assertThat(scaledBitmap.getHeight()).isEqualTo(200);
 scaledBitmap.getPixels(new int[20000], 0, 0, 0, 0, 100, 200);
}

代码示例来源：origin: facebook/facebook-android-sdk

private void setBlankProfilePicture() {
  // If we have a pending image download request cancel it
  if (lastRequest != null) {
    ImageDownloader.cancelRequest(lastRequest);
  }
  if (customizedDefaultProfilePicture == null) {
    int blankImageResource = isCropped() ?
        R.drawable.com_facebook_profile_picture_blank_square :
        R.drawable.com_facebook_profile_picture_blank_portrait;
    setImageBitmap(BitmapFactory.decodeResource(getResources(), blankImageResource));
  } else {
    // Update profile image dimensions.
    updateImageQueryParameters();
    // Resize inputBitmap to new dimensions of queryWidth and queryHeight.
    Bitmap scaledBitmap = Bitmap.createScaledBitmap(
        customizedDefaultProfilePicture, queryWidth, queryHeight, false);
    setImageBitmap(scaledBitmap);
  }
}

代码示例来源：origin: Rajawali/Rajawali

public void update() throws TextureException
{
  if(mMovie == null || mMovie.duration() == 0) return;
  long now = SystemClock.uptimeMillis();
  int relTime = (int)((now - mStartTime) % mMovie.duration());
  mMovie.setTime(relTime);
  mGIFBitmap.eraseColor(Color.TRANSPARENT);
  mMovie.draw(mCanvas, 0, 0);
  mBitmap = Bitmap.createScaledBitmap(mGIFBitmap, mTextureSize, mTextureSize, false);
  TextureManager.getInstance().replaceTexture(this);
  replace();
}

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