我的android是3.2版，9.0版oreo。
我下载了读取像素颜色的源代码。 该应用已打开，相机正在工作，但无法读取像素颜色。 颜色代码应该随着光标的移动而改变，但是颜色代码没有改变。
您能帮我发现问题吗？
这是Java主代码。
Colordetail activity
package fr.tvbarthel.apps.cameracolorpicker.activities;
public class ColorDetailActivity extends AppCompatActivity implements DeleteColorDialogFragment.Callback,
EditTextDialogFragment.Callback {
/**
* A key for passing a color item as extra.
*/
private static final String EXTRA_COLOR_ITEM = "ColorDetailActivity.Extras.EXTRA_COLOR_ITEM";
/**
* A key for passing the global visible rect of the clicked color preview clicked.
*/
private static final String EXTRA_START_BOUNDS = "ColorDetailActivity.Extras.EXTRA_START_BOUNDS";
/**
* A key for passing an optional palette that is associated with the color item displayed.
*/
private static final String EXTRA_PALETTE = "ColorDetailActivity.Extras.EXTRA_PALETTE";
/**
* The quality of the image compressed before sharing.
*/
private static final int SHARED_IMAGE_QUALITY = 100;
/**
* The size in pixels of the shared image.
*/
private static final int SHARED_IMAGE_SIZE = 150;
/**
* The name of the directory where the shared image is created.
*/
private static final String SHARED_DIRECTORY = "colors";
/**
* The name of the file used to write the shared image.
*/
private static final String SHARED_IMAGE_FILE = "shared_colors.jpg";
/**
* The authority of the file provider declared in our manifest.
*/
private static final String FILE_PROVIDER_AUTHORITY = ".fileprovider";
/**
* A request code to use in {@link EditTextDialogFragment#newInstance(int, int, int, int, String, String, boolean)}.
*/
private static final int REQUEST_CODE_EDIT_COLOR_ITEM_NAME = 15;
public static void startWithColorItem(Context context, ColorItem colorItem,
View colorPreviewClicked) {
startWithColorItem(context, colorItem, colorPreviewClicked, null);
}
public static void startWithColorItem(Context context, ColorItem colorItem,
View colorPreviewClicked, Palette palette) {
final boolean isActivity = context instanceof Activity;
final Rect startBounds = new Rect();
colorPreviewClicked.getGlobalVisibleRect(startBounds);
final Intent intent = new Intent(context, ColorDetailActivity.class);
intent.putExtra(EXTRA_COLOR_ITEM, colorItem);
intent.putExtra(EXTRA_START_BOUNDS, startBounds);
intent.putExtra(EXTRA_PALETTE, palette);
if (!isActivity) {
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
}
context.startActivity(intent);
if (isActivity) {
((Activity) context).overridePendingTransition(0, 0);
}
}
/**
* A {@link android.view.View} for showing the color preview being translated during the start animation from the clicked position to the right location.
*/
private View mTranslatedPreview;
/**
* A {@link android.view.View} for showing the color preview being scaled during the start animation to fill the preview container.
*/
private View mScaledPreview;
/**
* A {@link ColorItemDetailView} displaying details of a {@link ColorItem}.
*/
private ColorItemDetailView mColorItemDetailView;
/**
* The {@link fr.tvbarthel.apps.cameracolorpicker.data.ColorItem} being displayed.
*/
private ColorItem mColorItem;
/**
* An optional {@link Palette} that is associated with the {@link ColorItem}.
*/
private Palette mPalette;
/**
* Inset of the round shadow which must be take into account we evaluate the scale ratio.
*/
private int shadowInset;
/**
* Shadow used as delimiter.
*/
private View mShadow;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_color_detail);
getSupportActionBar().setDisplayHomeAsUpEnabled(true);
// ensure correct extras.
final Intent intent = getIntent();
if (!intent.hasExtra(EXTRA_COLOR_ITEM) || !intent.hasExtra(EXTRA_START_BOUNDS)
|| !intent.hasExtra(EXTRA_PALETTE)) {
throw new IllegalStateException("Missing extras. Please use startWithColorItem.");
}
// Retrieve the extras.
final Rect startBounds = intent.getParcelableExtra(EXTRA_START_BOUNDS);
if (savedInstanceState == null) {
mColorItem = intent.getParcelableExtra(EXTRA_COLOR_ITEM);
mPalette = intent.getParcelableExtra(EXTRA_PALETTE);
} else {
mColorItem = savedInstanceState.getParcelable(EXTRA_COLOR_ITEM);
mPalette = savedInstanceState.getParcelable(EXTRA_PALETTE);
}
// Set the title of the activity with the name of the color, if not null.
if (!TextUtils.isEmpty(mColorItem.getName())) {
setTitle(mColorItem.getName());
} else {
setTitle(mColorItem.getHexString());
}
shadowInset = getResources().getDimensionPixelSize(R.dimen.row_color_item_preview_size_shadow_size);
// Create a rect that will be used to retrieve the stop bounds.
final Rect stopBounds = new Rect();
// Find the views.
mTranslatedPreview = findViewById(R.id.activity_color_detail_preview_translating);
mScaledPreview = findViewById(R.id.activity_color_detail_preview_scaling);
mColorItemDetailView = (ColorItemDetailView) findViewById(R.id.activity_color_detail_color_item_detail_view);
mColorItemDetailView.setColorItem(mColorItem);
mShadow = findViewById(R.id.activity_color_detail_list_view_shadow);
// Display the color item data.
mTranslatedPreview.getBackground().setColorFilter(mColorItem.getColor(), PorterDuff.Mode.MULTIPLY);
mScaledPreview.getBackground().setColorFilter(mColorItem.getColor(), PorterDuff.Mode.MULTIPLY);
final View previewContainer = findViewById(R.id.activity_color_detail_preview_container);
final ViewTreeObserver viewTreeObserver = previewContainer.getViewTreeObserver();
if (viewTreeObserver.isAlive()) {
viewTreeObserver.addOnPreDrawListener(new ViewTreeObserver.OnPreDrawListener() {
@Override
public boolean onPreDraw() {
previewContainer.getViewTreeObserver().removeOnPreDrawListener(this);
mTranslatedPreview.getGlobalVisibleRect(stopBounds);
final float scale = startBounds.width() / (float) stopBounds.width();
mTranslatedPreview.setScaleX(scale);
mTranslatedPreview.setScaleY(scale);
// compute bounds again to include scale.
mTranslatedPreview.getGlobalVisibleRect(stopBounds);
final int deltaY = startBounds.top - stopBounds.top;
final int deltaX = startBounds.left - stopBounds.left;
float scaleRatioX = (startBounds.width() - 2 * shadowInset) / (float) stopBounds.width();
float scaleRatioY = (startBounds.height() - 2 * shadowInset) / (float) stopBounds.height();
mScaledPreview.setScaleX(scaleRatioX);
mScaledPreview.setScaleY(scaleRatioY);
final AnimatorSet translationAnimatorSet = new AnimatorSet();
translationAnimatorSet
.play(ObjectAnimator.ofFloat(mTranslatedPreview, View.TRANSLATION_X, deltaX, 0))
.with(ObjectAnimator.ofFloat(mTranslatedPreview, View.TRANSLATION_Y, deltaY, -2 * shadowInset));
translationAnimatorSet.addListener(new Animator.AnimatorListener() {
@Override
public void onAnimationStart(Animator animation) {
}
@Override
public void onAnimationEnd(Animator animation) {
mScaledPreview.setVisibility(View.VISIBLE);
mColorItemDetailView.setVisibility(View.VISIBLE);
mShadow.setVisibility(View.VISIBLE);
final float maxContainerSize = (float) Math.sqrt(Math.pow(previewContainer.getWidth(), 2) + Math.pow(previewContainer.getHeight(), 2));
final float maxSize = Math.max(mScaledPreview.getWidth(), mScaledPreview.getHeight());
final float scaleRatio = maxContainerSize / maxSize;
final AnimatorSet scaleAnimatorSet = new AnimatorSet();
scaleAnimatorSet.play(ObjectAnimator.ofFloat(mScaledPreview, View.SCALE_X,
mScaledPreview.getScaleX(), scaleRatio))
.with(ObjectAnimator.ofFloat(mScaledPreview, View.SCALE_Y,
mScaledPreview.getScaleY(), scaleRatio))
.with(ObjectAnimator.ofFloat(mColorItemDetailView, View.ALPHA, 0f, 1f));
scaleAnimatorSet.start();
}
@Override
public void onAnimationCancel(Animator animation) {
}
@Override
public void onAnimationRepeat(Animator animation) {
}
});
translationAnimatorSet.start();
return true;
}
});
}
ColorDetailActivityFlavor.onCreate(this);
}
@Override
public void onSaveInstanceState(Bundle outState) {
super.onSaveInstanceState(outState);
outState.putParcelable(EXTRA_COLOR_ITEM, mColorItem);
outState.putParcelable(EXTRA_PALETTE, mPalette);
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_color_detail, menu);
if (mPalette != null) {
// A color associated with a palette can't be deleted.
menu.removeItem(R.id.menu_color_detail_action_delete);
}
ColorDetailActivityFlavor.onCreateOptionsMenu(menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.menu_color_detail_action_delete) {
DeleteColorDialogFragment.newInstance(mColorItem).show(getSupportFragmentManager(), null);
return true;
} else if (id == android.R.id.home) {
finish();
} else if (id == R.id.menu_color_detail_action_share) {
return handleActionShare(this);
} else if (id == R.id.menu_color_detail_action_edit) {
EditTextDialogFragment.newInstance(REQUEST_CODE_EDIT_COLOR_ITEM_NAME,
R.string.activity_color_detail_edit_text_dialog_fragment_title,
R.string.activity_color_detail_edit_text_dialog_fragment_positive_button,
android.R.string.cancel,
mColorItem.getHexString(),
mColorItem.getName(), true).show(getSupportFragmentManager(), null);
}
return super.onOptionsItemSelected(item);
}
@Override
public void onColorDeletionConfirmed(@NonNull ColorItem colorItemToDelete) {
if (ColorItems.deleteColorItem(this, colorItemToDelete)) {
finish();
}
}
@Override
public void onEditTextDialogFragmentPositiveButtonClick(int requestCode, String text) {
if (requestCode == REQUEST_CODE_EDIT_COLOR_ITEM_NAME) {
// Update the title of the activity.
if (TextUtils.isEmpty(text)) {
setTitle(mColorItem.getHexString());
} else {
setTitle(text);
}
// Set the new name.
mColorItem.setName(text);
// Persist the change.
if (mPalette == null) {
// The color item is a standalone color.
// It's not associated with a palette.
// Just save the color item.
ColorItems.saveColorItem(this, mColorItem);
} else {
// The color item is associated with a palette.
// Edit and save the palette.
final List<ColorItem> colorItems = mPalette.getColors();
for (ColorItem candidate : colorItems) {
if (candidate.getId() == mColorItem.getId()) {
candidate.setName(text);
break;
}
}
Palettes.saveColorPalette(this, mPalette);
}
}
}
@Override
public void onEditTextDialogFragmentNegativeButtonClick(int requestCode) {
// nothing to do here.
}
/**
* Handle the share action from the menu item.
* <p/>
* Create a bitmap, draw the color and send an intent for sharing the color.
*
* @param context context used to initialize internal component.
* @return Returns true if the share action was handled correctly, false otherwise.
*/
private boolean handleActionShare(Context context) {
boolean handled;
try {
// Create a bitmap and draw the color.
final Bitmap bitmap = Bitmap.createBitmap(SHARED_IMAGE_SIZE, SHARED_IMAGE_SIZE, Bitmap.Config.ARGB_8888);
final Canvas canvas = new Canvas(bitmap);
canvas.drawColor(mColorItem.getColor());
// Compress the bitmap before saving and sharing.
final ByteArrayOutputStream bytes = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, SHARED_IMAGE_QUALITY, bytes);
bitmap.recycle();
// Write the compressed bytes to a files
final File outputDirectory = new File(getFilesDir(), SHARED_DIRECTORY);
if (outputDirectory.isDirectory() || outputDirectory.mkdirs()) {
final File shareColorFile = new File(outputDirectory, SHARED_IMAGE_FILE);
final FileOutputStream fo = new FileOutputStream(shareColorFile);
fo.write(bytes.toByteArray());
fo.close();
// Get the content uri.
final Uri contentUri = FileProvider.getUriForFile(this,
context.getPackageName() + FILE_PROVIDER_AUTHORITY, shareColorFile);
// Send an intent to share the image.
final Intent intent = new Intent(Intent.ACTION_SEND);
intent.putExtra(Intent.EXTRA_STREAM, contentUri);
intent.putExtra(Intent.EXTRA_TEXT, mColorItem.getHexString() + "\n"
+ mColorItem.getRgbString() + "\n" + mColorItem.getHsvString());
intent.setType("image/jpeg");
intent.addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
startActivity(Intent.createChooser(intent, null));
handled = true;
} else {
handled = false;
}
} catch (IOException e) {
handled = false;
}
return handled;
}
}
Pickcolorbase活动
@Override
public void onColorSelected(int color) {
mSelectedColor = color;
mPointerRing.getBackground().setColorFilter(color, PorterDuff.Mode.SRC_ATOP);
}
@Override
public void onClick(View v) {
if (v == mCameraPreview) {
animatePickedColor(mSelectedColor);
} else if (v.getId() == R.id.activity_color_picker_save_button) {
if (OI_COLOR_PICKER.equals(action)) {
Intent returnIntent = new Intent();
returnIntent.putExtra(OI_COLOR_DATA, mLastPickedColor);
setResult(RESULT_OK, returnIntent);
finish();
return;
}
ColorItems.saveColorItem(this, new ColorItem(mLastPickedColor));
setSaveCompleted(true);
}
}
/**
* Initialize the views used in this activity.
* <p/>
* Internally find the view by their ids and set the click listeners.
*/
protected void initViews() {
mIsPortrait = getResources().getBoolean(R.bool.is_portrait);
mPreviewContainer = (FrameLayout) findViewById(R.id.activity_color_picker_preview_container);
mPickedColorPreview = findViewById(R.id.activity_color_picker_color_preview);
mPickedColorPreviewAnimated = findViewById(R.id.activity_color_picker_animated_preview);
mColorPreviewText = (TextView) findViewById(R.id.activity_color_picker_color_preview_text);
mPointerRing = findViewById(R.id.activity_color_picker_pointer_ring);
mSaveCompletedIcon = findViewById(R.id.activity_color_picker_save_completed);
mSaveButton = findViewById(R.id.activity_color_picker_save_button);
mSaveButton.setOnClickListener(this);
mConfirmSaveMessage = (TextView) findViewById(R.id.activity_color_picker_confirm_save_message);
mHideConfirmSaveMessage = new Runnable() {
@Override
public void run() {
mConfirmSaveMessage.animate()
.translationY(-mConfirmSaveMessage.getMeasuredHeight())
.setDuration(DURATION_CONFIRM_SAVE_MESSAGE)
.start();
}
};
positionConfirmSaveMessage();
mConfirmSaveMessageInterpolator = new DecelerateInterpolator();
mLastPickedColor = ColorItems.getLastPickedColor(this);
applyPreviewColor(mLastPickedColor);
}
* Initialize the deltas used for the translation of the preview of the picked color.
*/
@SuppressLint("NewApi")
protected void initTranslationDeltas() {
ViewTreeObserver vto = mPointerRing.getViewTreeObserver();
if (vto.isAlive()) {
vto.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
@Override
public void onGlobalLayout() {
ViewTreeObserver vto = mPointerRing.getViewTreeObserver();
if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.JELLY_BEAN) {
vto.removeGlobalOnLayoutListener(this);
} else {
vto.removeOnGlobalLayoutListener(this);
}
final Rect pointerRingRect = new Rect();
final Rect colorPreviewAnimatedRect = new Rect();
mPickedColorPreviewAnimated.getGlobalVisibleRect(pointerRingRect);
mPickedColorPreview.getGlobalVisibleRect(colorPreviewAnimatedRect);
mTranslationDeltaX = colorPreviewAnimatedRect.left - pointerRingRect.left;
mTranslationDeltaY = colorPreviewAnimatedRect.top - pointerRingRect.top;
}
});
}
}
/**
* Initialize the animator used for the progress of the picked color.
*/
protected void initPickedColorProgressAnimator() {
mPickedColorProgressAnimator = ObjectAnimator.ofFloat(this, PICKED_COLOR_PROGRESS_PROPERTY_NAME, 0f, 1f);
mPickedColorProgressAnimator.setDuration(400);
mPickedColorProgressAnimator.addListener(new Animator.AnimatorListener() {
@Override
public void onAnimationStart(Animator animation) {
mPickedColorPreviewAnimated.setVisibility(View.VISIBLE);
mPickedColorPreviewAnimated.getBackground().setColorFilter(mSelectedColor, PorterDuff.Mode.SRC_ATOP);
}
@Override
public void onAnimationEnd(Animator animation) {
ColorItems.saveLastPickedColor(ColorPickerBaseActivity.this, mLastPickedColor);
applyPreviewColor(mLastPickedColor);
mPickedColorPreviewAnimated.setVisibility(View.INVISIBLE);
}
@Override
public void onAnimationCancel(Animator animation) {
mPickedColorPreviewAnimated.setVisibility(View.INVISIBLE);
}
@Override
public void onAnimationRepeat(Animator animation) {
}
});
}
/**
* Initialize the animator used for the progress of the "save completed" state.
*/
protected void initSaveCompletedProgressAnimator() {
mSaveCompletedProgressAnimator = ObjectAnimator.ofFloat(this, SAVE_COMPLETED_PROGRESS_PROPERTY_NAME, 1f, 0f);
}
/**
* Apply the preview color.
* <p/>
* Display the preview color and its human representation.
*
* @param previewColor the preview color to apply.
*/
protected void applyPreviewColor(int previewColor) {
setSaveCompleted(false);
mPickedColorPreview.getBackground().setColorFilter(previewColor, PorterDuff.Mode.SRC_ATOP);
mColorPreviewText.setText(ColorItem.makeHexString(previewColor));
}
/**
* Animate the color being picked.
*
* @param pickedColor the color being picked.
*/
protected void animatePickedColor(int pickedColor) {
mLastPickedColor = pickedColor;
if (mPickedColorProgressAnimator.isRunning()) {
mPickedColorProgressAnimator.cancel();
}
mPickedColorProgressAnimator.start();
}
/**
* Set the "save completed" state.
* <p/>
* True means that the save is completed. The preview color should not be saved again.
*
* @param isSaveCompleted the "save completed" state.
*/
protected void setSaveCompleted(boolean isSaveCompleted) {
mSaveButton.setEnabled(!isSaveCompleted);
mSaveCompletedProgressAnimator.cancel();
mSaveCompletedProgressAnimator.setFloatValues(mSaveCompletedProgress, isSaveCompleted ? 0f : 1f);
mSaveCompletedProgressAnimator.start();
}
/**
* Set the progress of the picked color animation.
* <p/>
* Used by {@link ColorPickerBaseActivity#mPickedColorProgressAnimator}.
*
* @param progress A value in closed range [0,1] representing the progress of the picked color animation.
*/
protected void setPickedColorProgress(float progress) {
final float fastOppositeProgress = (float) Math.pow(progress, 0.3f);
final float translationX = mTranslationDeltaX * progress;
final float translationY = (float) (mTranslationDeltaY * Math.pow(progress, 2f));
mPickedColorPreviewAnimated.setTranslationX(translationX);
mPickedColorPreviewAnimated.setTranslationY(translationY);
mPickedColorPreviewAnimated.setScaleX(fastOppositeProgress);
mPickedColorPreviewAnimated.setScaleY(fastOppositeProgress);
}
/**
* Set the progress of the animation of the "save completed" state.
* <p/>
* Used by {@link ColorPickerBaseActivity#mSaveCompletedProgressAnimator}.
*
* @param progress A value in closed range [0,1] representing the progress of the animation of the "save completed" state.
*/
protected void setSaveCompletedProgress(float progress) {
mSaveButton.setScaleX(progress);
mSaveButton.setRotation(45 * (1 - progress));
mSaveCompletedIcon.setScaleX(1 - progress);
mSaveCompletedProgress = progress;
}
/**
* Async task used to configure and start the camera preview.
*/
private class CameraAsyncTask extends AsyncTask<Void, Void, Camera> {
/**
* The {@link android.view.ViewGroup.LayoutParams} used for adding the preview to its container.
*/
protected FrameLayout.LayoutParams mPreviewParams;
@Override
protected Camera doInBackground(Void... params) {
Camera camera = getCameraInstance();
if (camera == null) {
ColorPickerBaseActivity.this.finish();
} else {
//configure Camera parameters
Camera.Parameters cameraParameters = camera.getParameters();
//get optimal camera preview size according to the layout used to display it
Camera.Size bestSize = Cameras.getBestPreviewSize(
cameraParameters.getSupportedPreviewSizes()
, mPreviewContainer.getWidth()
, mPreviewContainer.getHeight()
, mIsPortrait);
//set optimal camera preview
cameraParameters.setPreviewSize(bestSize.width, bestSize.height);
camera.setParameters(cameraParameters);
//set camera orientation to match with current device orientation
Cameras.setCameraDisplayOrientation(ColorPickerBaseActivity.this, camera);
//get proportional dimension for the layout used to display preview according to the preview size used
int[] adaptedDimension = Cameras.getProportionalDimension(
bestSize
, mPreviewContainer.getWidth()
, mPreviewContainer.getHeight()
, mIsPortrait);
//set up params for the layout used to display the preview
mPreviewParams = new FrameLayout.LayoutParams(adaptedDimension[0], adaptedDimension[1]);
mPreviewParams.gravity = Gravity.CENTER;
}
return camera;
}
我删除了一些部分。整个代码在https://github.com/tvbarthel/CameraColorPicker
中