下面列出了android.util.Size#getHeight ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
/**
* Given {@code choices} of {@code Size}s supported by a camera, chooses the smallest one whose
* width and height are at least as large as the respective requested values, and whose aspect
* ratio matches with the specified value.
*
* @param choices The list of sizes that the camera supports for the intended output class
* @param width The minimum desired width
* @param height The minimum desired height
* @param aspectRatio The aspect ratio
* @return The optimal {@code Size}, or an arbitrary one if none were big enough
*/
private static Size chooseOptimalSize(Size[] choices, int width, int height, Size aspectRatio) {
// Collect the supported resolutions that are at least as big as the preview Surface
List<Size> bigEnough = new ArrayList<>();
int w = aspectRatio.getWidth();
int h = aspectRatio.getHeight();
for (Size option : choices) {
if (option.getHeight() == option.getWidth() * h / w &&
option.getWidth() >= width && option.getHeight() >= height) {
bigEnough.add(option);
}
}
// Pick the smallest of those, assuming we found any
if (bigEnough.size() > 0) {
return Collections.min(bigEnough, new CompareSizesByArea());
} else {
Log.e(TAG, "Couldn't find any suitable preview size");
return choices[0];
}
}
/**
* Returns the current bounds (or the default bounds if there are no current bounds) with the
* specified aspect ratio.
*/
Rect transformBoundsToAspectRatio(Rect stackBounds, float aspectRatio,
boolean useCurrentMinEdgeSize) {
// Save the snap fraction, calculate the aspect ratio based on screen size
final float snapFraction = mSnapAlgorithm.getSnapFraction(stackBounds,
getMovementBounds(stackBounds));
final int minEdgeSize = useCurrentMinEdgeSize ? mCurrentMinSize : mDefaultMinSize;
final Size size = mSnapAlgorithm.getSizeForAspectRatio(aspectRatio, minEdgeSize,
mDisplayInfo.logicalWidth, mDisplayInfo.logicalHeight);
final int left = (int) (stackBounds.centerX() - size.getWidth() / 2f);
final int top = (int) (stackBounds.centerY() - size.getHeight() / 2f);
stackBounds.set(left, top, left + size.getWidth(), top + size.getHeight());
mSnapAlgorithm.applySnapFraction(stackBounds, getMovementBounds(stackBounds), snapFraction);
if (mIsMinimized) {
applyMinimizedOffset(stackBounds, getMovementBounds(stackBounds));
}
return stackBounds;
}
/**
* 从sizeArray中找到满足16:9比例，且不超过maxPicturePixels指定的像素数的最大Size.
* 若找不到，则选择满足16:9比例的最大Size（像素数可能超过maxPicturePixels)，若仍找不到，返回最大Size。
*
* @param sizeArray StreamConfigurationMap.getOutputSizes(ImageFormat.JPEG)得到的sizeArray
* @param maxPicturePixels 最大可接受的照片像素数
* @return 找到满足16:9比例，且不超过maxPicturePixels指定的像素数的最大Size
*/
public static Size findBestSize(Size[] sizeArray, long maxPicturePixels) {
//满足16:9，但超过maxAcceptedPixels的过大Size
List<Size> tooLargeSizes = new ArrayList<>();
List<Size> immutableSizeList = Arrays.asList(sizeArray);
//Arrays.asList返回的List是不可变的，需重新包装为java.util.ArrayList.
List<Size> sizeList = new ArrayList<>(immutableSizeList);
//按面积由大到小排序
Collections.sort(sizeList, (lhs, rhs) -> -compare(lhs.getWidth() * lhs.getHeight(), rhs.getWidth() * rhs.getHeight()));
for (Size size : sizeList) {
//非16:9的尺寸无视
if (!isWide(size)) continue;
boolean notTooLarge = ((long) size.getWidth()) * ((long) size.getHeight()) <= maxPicturePixels;
if (!notTooLarge) {
tooLargeSizes.add(size);
continue;
}
return size;
}
if (tooLargeSizes.size() > 0) {
return tooLargeSizes.get(0);
} else {
return sizeList.get(0);
}
}
/**
* Given {@code choices} of {@code Size}s supported by a camera, chooses the smallest one whose
* width and height are at least as large as the respective requested values, and whose aspect
* ratio matches with the specified value.
*
* @param choices The list of sizes that the camera supports for the intended output class
* @param width The minimum desired width
* @param height The minimum desired height
* @param aspectRatio The aspect ratio
* @return The optimal {@code Size}, or an arbitrary one if none were big enough
*/
@SuppressLint("LongLogTag")
@DebugLog
private static Size chooseOptimalSize(
final Size[] choices, final int width, final int height, final Size aspectRatio) {
// Collect the supported resolutions that are at least as big as the preview Surface
final List<Size> bigEnough = new ArrayList<Size>();
for (final Size option : choices) {
if (option.getHeight() >= MINIMUM_PREVIEW_SIZE && option.getWidth() >= MINIMUM_PREVIEW_SIZE) {
Log.i(TAG, "Adding size: " + option.getWidth() + "x" + option.getHeight());
bigEnough.add(option);
} else {
Log.i(TAG, "Not adding size: " + option.getWidth() + "x" + option.getHeight());
}
}
// Pick the smallest of those, assuming we found any
if (bigEnough.size() > 0) {
final Size chosenSize = Collections.min(bigEnough, new CompareSizesByArea());
Log.i(TAG, "Chosen size: " + chosenSize.getWidth() + "x" + chosenSize.getHeight());
return chosenSize;
} else {
Log.e(TAG, "Couldn't find any suitable preview size");
return choices[0];
}
}
private void shrinkCaptureArea() {
Size screenSize = getScreenSize();
Size videoRecordingSize = VideoUtil.getVideoRecordingSize();
float scale = getSurfaceScaleForRecording();
float targetWidthForAnimation = videoRecordingSize.getWidth() * scale;
float scaleX = targetWidthForAnimation / screenSize.getWidth();
if (scaleX == 1f) {
float targetHeightForAnimation = videoRecordingSize.getHeight() * scale;
if (screenSize.getHeight() == targetHeightForAnimation) {
return;
}
cameraMetricsAnimator = ValueAnimator.ofFloat(screenSize.getHeight(), targetHeightForAnimation);
} else {
if (screenSize.getWidth() == targetWidthForAnimation) {
return;
}
cameraMetricsAnimator = ValueAnimator.ofFloat(screenSize.getWidth(), targetWidthForAnimation);
}
ViewGroup.LayoutParams params = camera.getLayoutParams();
cameraMetricsAnimator.setInterpolator(new LinearInterpolator());
cameraMetricsAnimator.setDuration(200);
cameraMetricsAnimator.addUpdateListener(animation -> {
if (scaleX == 1f) {
params.height = Math.round((float) animation.getAnimatedValue());
} else {
params.width = Math.round((float) animation.getAnimatedValue());
}
camera.setLayoutParams(params);
});
cameraMetricsAnimator.start();
}
/**
* Given {@code choices} of {@code Size}s supported by a camera, chooses the smallest one whose
* width and height are at least as large as the minimum of both, or an exact match if possible.
*
* @param choices The list of sizes that the camera supports for the intended output class
* @param width The minimum desired width
* @param height The minimum desired height
* @return The optimal {@code Size}, or an arbitrary one if none were big enough
*/
protected static Size chooseOptimalSize(final Size[] choices, final int width, final int height) {
final int minSize = Math.max(Math.min(width, height), MINIMUM_PREVIEW_SIZE);
final Size desiredSize = new Size(width, height);
// Collect the supported resolutions that are at least as big as the preview Surface
boolean exactSizeFound = false;
final List<Size> bigEnough = new ArrayList<Size>();
for (final Size option : choices) {
if (option.equals(desiredSize)) {
// Set the size but don't return yet so that remaining sizes will still be logged.
exactSizeFound = true;
}
if (option.getHeight() >= minSize && option.getWidth() >= minSize) {
bigEnough.add(option);
}
}
if (exactSizeFound) {
return desiredSize;
}
// Pick the smallest of those, assuming we found any
if (bigEnough.size() > 0) {
final Size chosenSize = Collections.min(bigEnough, new CompareSizesByArea());
return chosenSize;
} else {
return choices[0];
}
}
/**
* Given {@code choices} of {@code Size}s supported by a camera, choose the smallest one that
* is at least as large as the respective texture view size, and that is at most as large as the
* respective max size, and whose aspect ratio matches with the specified value. If such size
* doesn't exist, choose the largest one that is at most as large as the respective max size,
* and whose aspect ratio matches with the specified value.
*
* @param choices The list of sizes that the camera supports for the intended output
* class
* @param textureViewWidth The width of the texture view relative to sensor coordinate
* @param textureViewHeight The height of the texture view relative to sensor coordinate
* @param maxWidth The maximum width that can be chosen
* @param maxHeight The maximum height that can be chosen
* @param aspectRatio The aspect ratio
* @return The optimal {@code Size}, or an arbitrary one if none were big enough
*/
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];
}
}
/**
* Given {@code choices} of {@code Size}s supported by a camera, chooses the smallest one whose
* width and height are at least as large as the minimum of both, or an exact match if possible.
*
* @param choices The list of sizes that the camera supports for the intended output class
* @param width The minimum desired width
* @param height The minimum desired height
* @return The optimal {@code Size}, or an arbitrary one if none were big enough
*/
protected static Size chooseOptimalSize(final Size[] choices, final int width, final int height) {
final int minSize = Math.max(Math.min(width, height), MINIMUM_PREVIEW_SIZE);
final Size desiredSize = new Size(width, height);
// Collect the supported resolutions that are at least as big as the preview Surface
boolean exactSizeFound = false;
final List<Size> bigEnough = new ArrayList<Size>();
final List<Size> tooSmall = new ArrayList<Size>();
for (final Size option : choices) {
if (option.equals(desiredSize)) {
// Set the size but don't return yet so that remaining sizes will still be logged.
exactSizeFound = true;
}
if (option.getHeight() >= minSize && option.getWidth() >= minSize) {
bigEnough.add(option);
} else {
tooSmall.add(option);
}
}
if (exactSizeFound) {
return desiredSize;
}
// Pick the smallest of those, assuming we found any
if (bigEnough.size() > 0) {
final Size chosenSize = Collections.min(bigEnough, new CompareSizesByArea());
return chosenSize;
} else {
return choices[0];
}
}
/**
* In this sample, we choose a video size with 3x4 aspect ratio. Also, we don't use sizes
* larger than 1080p, since MediaRecorder cannot handle such a high-resolution video.
*
* @param choices The list of available sizes
* @return The video size
*/
private static Size chooseVideoSize(Size[] choices) {
for (Size size : choices) {
if (size.getWidth() == size.getHeight() * 4 / 3 && size.getWidth() <= 1080) {
return size;
}
}
Log.e(TAG, "Couldn't find any suitable video size");
return choices[choices.length - 1];
}
/**
* Given {@code choices} of {@code Size}s supported by a camera, choose the smallest one that
* is at least as large as the respective texture view size, and that is at most as large as the
* respective max size, and whose aspect ratio matches with the specified value. If such size
* doesn't exist, choose the largest one that is at most as large as the respective max size,
* and whose aspect ratio matches with the specified value.
*
* @param choices The list of sizes that the camera supports for the intended output
* class
* @param textureViewWidth The width of the texture view relative to sensor coordinate
* @param textureViewHeight The height of the texture view relative to sensor coordinate
* @param maxWidth The maximum width that can be chosen
* @param maxHeight The maximum height that can be chosen
* @param aspectRatio The aspect ratio
* @return The optimal {@code Size}, or an arbitrary one if none were big enough
*/
@RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
public 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];
}
}
/**
* カメラの撮影サイズを設定します.
*
* @param pictureSize カメラの撮影サイズ
*/
public void setPictureSize(final Size pictureSize) {
List<Size> sizes = getSupportedPictureSizes();
for (Size size : sizes) {
if (size.getWidth() == pictureSize.getWidth() && size.getHeight() == pictureSize.getHeight()) {
mPictureSize = pictureSize;
return;
}
}
throw new RuntimeException("Not found a match size.");
}
private 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 {
return choices[0];
}
}
/**
* In this sample, we choose a video size with 3x4 aspect ratio. Also, we don't use sizes
* larger than 1080p, since MediaRecorder cannot handle such a high-resolution video.
*
* @param choices The list of available sizes
* @return The video size
*/
private static Size chooseVideoSize(Size[] choices) {
for (Size size : choices) {
if (size.getWidth() == size.getHeight() * 4 / 3 && size.getWidth() <= 1080) {
return size;
}
}
Log.e(TAG, "Couldn't find any suitable video size");
return choices[choices.length - 1];
}
/**
* Given {@code choices} of {@code Size}s supported by a camera, chooses the smallest one whose
* width and height are at least as large as the minimum of both, or an exact match if possible.
*
* @param choices The list of sizes that the camera supports for the intended output class
* @param width The minimum desired width
* @param height The minimum desired height
* @return The optimal {@code Size}, or an arbitrary one if none were big enough
*/
protected static Size chooseOptimalSize(final Size[] choices, final int width, final int height) {
final int minSize = Math.max(Math.min(width, height), MINIMUM_PREVIEW_SIZE);
final Size desiredSize = new Size(width, height);
// Collect the supported resolutions that are at least as big as the preview Surface
boolean exactSizeFound = false;
final List<Size> bigEnough = new ArrayList<Size>();
final List<Size> tooSmall = new ArrayList<Size>();
for (final Size option : choices) {
if (option.equals(desiredSize)) {
// Set the size but don't return yet so that remaining sizes will still be logged.
exactSizeFound = true;
}
if (option.getHeight() >= minSize && option.getWidth() >= minSize) {
bigEnough.add(option);
} else {
tooSmall.add(option);
}
}
LOGGER.i("Desired size: " + desiredSize + ", min size: " + minSize + "x" + minSize);
LOGGER.i("Valid preview sizes: [" + TextUtils.join(", ", bigEnough) + "]");
LOGGER.i("Rejected preview sizes: [" + TextUtils.join(", ", tooSmall) + "]");
if (exactSizeFound) {
LOGGER.i("Exact size match found.");
return desiredSize;
}
// Pick the smallest of those, assuming we found any
if (bigEnough.size() > 0) {
final Size chosenSize = Collections.min(bigEnough, new CompareSizesByArea());
LOGGER.i("Chosen size: " + chosenSize.getWidth() + "x" + chosenSize.getHeight());
return chosenSize;
} else {
LOGGER.e("Couldn't find any suitable preview size");
return choices[0];
}
}
/**
* Given {@code choices} of {@code Size}s supported by a camera, chooses the smallest one whose
* width and height are at least as large as the minimum of both, or an exact match if possible.
*
* @param choices The list of sizes that the camera supports for the intended output class
* @param width The minimum desired width
* @param height The minimum desired height
* @return The optimal {@code Size}, or an arbitrary one if none were big enough
*/
protected static Size chooseOptimalSize(final Size[] choices, final int width, final int height) {
final int minSize = Math.max(Math.min(width, height), MINIMUM_PREVIEW_SIZE);
final Size desiredSize = new Size(width, height);
// Collect the supported resolutions that are at least as big as the preview Surface
boolean exactSizeFound = false;
final List<Size> bigEnough = new ArrayList<Size>();
final List<Size> tooSmall = new ArrayList<Size>();
for (final Size option : choices) {
if (option.equals(desiredSize)) {
// Set the size but don't return yet so that remaining sizes will still be logged.
exactSizeFound = true;
}
if (option.getHeight() >= minSize && option.getWidth() >= minSize) {
bigEnough.add(option);
} else {
tooSmall.add(option);
}
}
Log.d(TAG, "Desired size: " + desiredSize + ", min size: " + minSize + "x" + minSize);
Log.d(TAG, "Valid preview sizes: [" + TextUtils.join(", ", bigEnough) + "]");
Log.d(TAG, "Rejected preview sizes: [" + TextUtils.join(", ", tooSmall) + "]");
if (exactSizeFound) {
Log.d(TAG, "Exact size match found.");
return desiredSize;
}
// Pick the smallest of those, assuming we found any
if (bigEnough.size() > 0) {
final Size chosenSize = Collections.min(bigEnough, new CompareSizesByArea());
Log.d(TAG, "Chosen size: " + chosenSize.getWidth() + "x" + chosenSize.getHeight());
return chosenSize;
} else {
Log.e(TAG, "Couldn't find any suitable preview size");
return choices[0];
}
}
@Override
public void onPreviewSizeChosen(final Size size, final int rotation) {
final float textSizePx = TypedValue.applyDimension(
TypedValue.COMPLEX_UNIT_DIP, TEXT_SIZE_DIP, getResources().getDisplayMetrics());
borderedText = new BorderedText(textSizePx);
borderedText.setTypeface(Typeface.MONOSPACE);
classifier =
TensorFlowImageClassifier.create(
getAssets(),
MODEL_FILE,
LABEL_FILE,
INPUT_SIZE,
IMAGE_MEAN,
IMAGE_STD,
INPUT_NAME,
OUTPUT_NAME);
previewWidth = size.getWidth();
previewHeight = size.getHeight();
final Display display = getWindowManager().getDefaultDisplay();
final int screenOrientation = display.getRotation();
LOGGER.i("Sensor orientation: %d, Screen orientation: %d", rotation, screenOrientation);
sensorOrientation = rotation + screenOrientation;
LOGGER.i("Initializing at size %dx%d", previewWidth, previewHeight);
rgbFrameBitmap = Bitmap.createBitmap(previewWidth, previewHeight, Config.ARGB_8888);
croppedBitmap = Bitmap.createBitmap(INPUT_SIZE, INPUT_SIZE, Config.ARGB_8888);
frameToCropTransform = ImageUtils.getTransformationMatrix(
previewWidth, previewHeight,
INPUT_SIZE, INPUT_SIZE,
sensorOrientation, MAINTAIN_ASPECT);
cropToFrameTransform = new Matrix();
frameToCropTransform.invert(cropToFrameTransform);
addCallback(
new DrawCallback() {
@Override
public void drawCallback(final Canvas canvas) {
renderDebug(canvas);
}
});
}
public PictureSize(final Size size) {
this(size.getWidth(), size.getHeight());
}
private String getPreviewSizeSettingValue(final Size previewSize) {
return previewSize.getWidth() + " x " + previewSize.getHeight();
}
/**
* Given {@code choices} of {@code Size}s supported by a camera, chooses the smallest one whose
* width and height are at least as large as the minimum of both, or an exact match if possible.
*
* @param choices The list of sizes that the camera supports for the intended output class
* @param width The minimum desired width
* @param height The minimum desired height
* @return The optimal {@code Size}, or an arbitrary one if none were big enough
*/
protected static Size chooseOptimalSize(final Size[] choices, final int width, final int height) {
final int minSize = Math.max(Math.min(width, height), MINIMUM_PREVIEW_SIZE);
final Size desiredSize = new Size(width, height);
// Collect the supported resolutions that are at least as big as the preview Surface
boolean exactSizeFound = false;
final List<Size> bigEnough = new ArrayList<Size>();
final List<Size> tooSmall = new ArrayList<Size>();
for (final Size option : choices) {
if (option.equals(desiredSize)) {
// Set the size but don't return yet so that remaining sizes will still be logged.
exactSizeFound = true;
}
if (option.getHeight() >= minSize && option.getWidth() >= minSize) {
bigEnough.add(option);
} else {
tooSmall.add(option);
}
}
Log.d(TAG, "Desired size: " + desiredSize + ", min size: " + minSize + "x" + minSize);
Log.d(TAG, "Valid preview sizes: [" + TextUtils.join(", ", bigEnough) + "]");
Log.d(TAG, "Rejected preview sizes: [" + TextUtils.join(", ", tooSmall) + "]");
if (exactSizeFound) {
Log.d(TAG, "Exact size match found.");
return desiredSize;
}
// Pick the smallest of those, assuming we found any
if (bigEnough.size() > 0) {
final Size chosenSize = Collections.min(bigEnough, new CompareSizesByArea());
Log.d(TAG, "Chosen size: " + chosenSize.getWidth() + "x" + chosenSize.getHeight());
return chosenSize;
} else {
Log.e(TAG, "Couldn't find any suitable preview size");
return choices[0];
}
}
/**
* Return true if the two given {@link Size}s have the same aspect ratio.
*
* @param a first {@link Size} to compare.
* @param b second {@link Size} to compare.
* @return true if the sizes have the same aspect ratio, otherwise false.
*/
private static boolean checkAspectsEqual(Size a, Size b) {
double aAspect = a.getWidth() / (double) a.getHeight();
double bAspect = b.getWidth() / (double) b.getHeight();
return Math.abs(aAspect - bAspect) <= ASPECT_RATIO_TOLERANCE;
}