android 自定义图片剪裁
16lz
2021-01-23
1、设置参数
Bundle bundle=new Bundle(); bundle.putString("image-path",imagePath); bundle.putInt("aspectX",2160); bundle.putInt("aspectY",1720); bundle.putInt("outputX",2160); bundle.putInt("outputY",1720); bundle.putBoolean("scale",true); bundle.putBoolean("scaleUpIfNeeded",true); Intent intent=new Intent(mContext, CropImage.class); intent.putExtras(bundle); startActivityForResult(intent,GOTO_CROP_IMAGE_REQEST);2、剪裁Activity
CropImage.java
public class CropImage extends MonitoredActivity { private static final String TAG = "CropImage"; // These are various options can be specified in the intent. private Bitmap.CompressFormat mOutputFormat = Bitmap.CompressFormat.JPEG; // only used with mSaveUri private Uri mSaveUri = null; private int mAspectX, mAspectY; private boolean mCircleCrop = false; private final Handler mHandler = new Handler(); // These options specifiy the output image size and whether we should // scale the output to fit it (or just crop it). private int mOutputX, mOutputY; private boolean mScale; private boolean mScaleUp = true; private boolean mDoFaceDetection = true; boolean mWaitingToPick; // Whether we are wait the user to pick a face. boolean mSaving; // Whether the "save" button is already clicked. private CropImageView mImageView; private ContentResolver mContentResolver; private Bitmap mBitmap; private final BitmapManager.ThreadSet mDecodingThreads = new BitmapManager.ThreadSet(); HighlightView mCrop; private IImage mImage; private String mImagePath; @Override public void onCreate(Bundle icicle) { super.onCreate(icicle); mContentResolver = getContentResolver(); requestWindowFeature(Window.FEATURE_NO_TITLE); setContentView(R.layout.cropimage); mImageView = (CropImageView) findViewById(R.id.image); showStorageToast(this); Intent intent = getIntent(); Bundle extras = intent.getExtras(); if (extras != null) { if (extras.getString("circleCrop") != null) { mCircleCrop = true; mAspectX = 1; mAspectY = 1; } mImagePath = extras.getString("image-path"); mSaveUri = getImageUri(mImagePath); mBitmap = getBitmap(mImagePath); mAspectX = extras.getInt("aspectX"); mAspectY = extras.getInt("aspectY"); mOutputX = extras.getInt("outputX"); mOutputY = extras.getInt("outputY"); mScale = extras.getBoolean("scale", true); mScaleUp = extras.getBoolean("scaleUpIfNeeded", true); } if (mBitmap == null) { Log.d(TAG, "finish!!!"); finish(); return; } // Make UI fullscreen. getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN); findViewById(R.id.discard).setOnClickListener( new View.OnClickListener() { public void onClick(View v) { setResult(RESULT_CANCELED); finish(); } }); findViewById(R.id.save).setOnClickListener( new View.OnClickListener() { public void onClick(View v) { onSaveClicked(); } }); startFaceDetection(); } private Uri getImageUri(String path) { return Uri.fromFile(new File(path)); } private Bitmap getBitmap(String path) { Uri uri = getImageUri(path); InputStream in = null; try { in = mContentResolver.openInputStream(uri); return BitmapFactory.decodeStream(in); } catch (FileNotFoundException e) { Log.e(TAG, "file " + path + " not found"); } return null; } private void startFaceDetection() { if (isFinishing()) { return; } mImageView.setImageBitmapResetBase(mBitmap, true); Util.startBackgroundJob(this, null, "Please wait\u2026", new Runnable() { public void run() { final CountDownLatch latch = new CountDownLatch(1); final Bitmap b = (mImage != null) ? mImage.fullSizeBitmap(IImage.UNCONSTRAINED, 1024 * 1024) : mBitmap; mHandler.post(new Runnable() { public void run() { if (b != mBitmap && b != null) { mImageView.setImageBitmapResetBase(b, true); mBitmap.recycle(); mBitmap = b; } if (mImageView.getScale() == 1F) { mImageView.center(true, true); } latch.countDown(); } }); try { latch.await(); } catch (InterruptedException e) { throw new RuntimeException(e); } mRunFaceDetection.run(); } }, mHandler); } private void onSaveClicked() { // TODO this code needs to change to use the decode/crop/encode single // step api so that we don't require that the whole (possibly large) // bitmap doesn't have to be read into memory if (mSaving) return; if (mCrop == null) { return; } mSaving = true; Rect r = mCrop.getCropRect(); int width = r.width(); int height = r.height(); // If we are circle cropping, we want alpha channel, which is the // third param here. Bitmap croppedImage = Bitmap.createBitmap(width, height, mCircleCrop ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565); { Canvas canvas = new Canvas(croppedImage); Rect dstRect = new Rect(0, 0, width, height); canvas.drawBitmap(mBitmap, r, dstRect, null); } if (mCircleCrop) { // OK, so what's all this about? // Bitmaps are inherently rectangular but we want to return // something that's basically a circle. So we fill in the // area around the circle with alpha. Note the all important // PortDuff.Mode.CLEAR. Canvas c = new Canvas(croppedImage); Path p = new Path(); p.addCircle(width / 2F, height / 2F, width / 2F, Path.Direction.CW); c.clipPath(p, Region.Op.DIFFERENCE); c.drawColor(0x00000000, PorterDuff.Mode.CLEAR); } /* If the output is required to a specific size then scale or fill */ if (mOutputX != 0 && mOutputY != 0) { if (mScale) { /* Scale the image to the required dimensions */ Bitmap old = croppedImage; croppedImage = Util.transform(new Matrix(), croppedImage, mOutputX, mOutputY, mScaleUp); if (old != croppedImage) { old.recycle(); } } else { /* Don't scale the image crop it to the size requested. * Create an new image with the cropped image in the center and * the extra space filled. */ // Don't scale the image but instead fill it so it's the // required dimension Bitmap b = Bitmap.createBitmap(mOutputX, mOutputY, Bitmap.Config.RGB_565); Canvas canvas = new Canvas(b); Rect srcRect = mCrop.getCropRect(); Rect dstRect = new Rect(0, 0, mOutputX, mOutputY); int dx = (srcRect.width() - dstRect.width()) / 2; int dy = (srcRect.height() - dstRect.height()) / 2; /* If the srcRect is too big, use the center part of it. */ srcRect.inset(Math.max(0, dx), Math.max(0, dy)); /* If the dstRect is too big, use the center part of it. */ dstRect.inset(Math.max(0, -dx), Math.max(0, -dy)); /* Draw the cropped bitmap in the center */ canvas.drawBitmap(mBitmap, srcRect, dstRect, null); /* Set the cropped bitmap as the new bitmap */ croppedImage.recycle(); croppedImage = b; } } // Return the cropped image directly or save it to the specified URI. Bundle myExtras = getIntent().getExtras(); if (myExtras != null && (myExtras.getParcelable("data") != null || myExtras.getBoolean("return-data"))) { Bundle extras = new Bundle(); extras.putParcelable("data", croppedImage); setResult(RESULT_OK); finish(); } else { final Bitmap b = croppedImage; Util.startBackgroundJob(this, null, "Saving image", new Runnable() { public void run() { saveOutput(b); } }, mHandler); } } private void saveOutput(Bitmap croppedImage) { if (mSaveUri != null) { OutputStream outputStream = null; try { outputStream = mContentResolver.openOutputStream(mSaveUri); if (outputStream != null) { croppedImage.compress(mOutputFormat, 75, outputStream); } } catch (IOException ex) { // TODO: report error to caller Log.e(TAG, "Cannot open file: " + mSaveUri, ex); } finally { Util.closeSilently(outputStream); } Bundle extras = new Bundle(); setResult(RESULT_OK, new Intent(mSaveUri.toString()) .putExtras(extras)); } else { Log.e(TAG, "neni definovana adresa pro ulozeni"); /*Bundle extras = new Bundle(); extras.putString("rect", mCrop.getCropRect().toString()); File oldPath = new File(mImage.getDataPath()); File directory = new File(oldPath.getParent()); int x = 0; String fileName = oldPath.getName(); fileName = fileName.substring(0, fileName.lastIndexOf(".")); // Try file-1.jpg, file-2.jpg, ... until we find a filename which // does not exist yet. while (true) { x += 1; String candidate = directory.toString() + "/" + fileName + "-" + x + ".jpg"; boolean exists = (new File(candidate)).exists(); if (!exists) { break; } } try { Uri newUri = ImageManager.addImage( mContentResolver, mImage.getTitle(), mImage.getDateTaken(), null, // TODO this null is going to cause us to lose // the location (gps). 0, // TODO this is going to cause the orientation // to reset. directory.toString(), fileName + "-" + x + ".jpg"); Cancelable cancelable = ImageManager.storeImage( newUri, mContentResolver, 0, // TODO fix this orientation croppedImage, null); cancelable.get(); setResult(RESULT_OK, new Intent() .setAction(newUri.toString()) .putExtras(extras)); } catch (Exception ex) { // basically ignore this or put up // some ui saying we failed Log.e(TAG, "store image fail, continue anyway", ex); } */ } croppedImage.recycle(); finish(); } @Override protected void onPause() { super.onPause(); BitmapManager.instance().cancelThreadDecoding(mDecodingThreads); mBitmap.recycle(); } @Override protected void onDestroy() { super.onDestroy(); } Runnable mRunFaceDetection = new Runnable() { @SuppressWarnings("hiding") float mScale = 1F; Matrix mImageMatrix; FaceDetector.Face[] mFaces = new FaceDetector.Face[3]; int mNumFaces; // For each face, we create a HightlightView for it. private void handleFace(FaceDetector.Face f) { PointF midPoint = new PointF(); int r = ((int) (f.eyesDistance() * mScale)) * 2; f.getMidPoint(midPoint); midPoint.x *= mScale; midPoint.y *= mScale; int midX = (int) midPoint.x; int midY = (int) midPoint.y; HighlightView hv = new HighlightView(mImageView); int width = mBitmap.getWidth(); int height = mBitmap.getHeight(); Rect imageRect = new Rect(0, 0, width, height); RectF faceRect = new RectF(midX, midY, midX, midY); faceRect.inset(-r, -r); if (faceRect.left < 0) { faceRect.inset(-faceRect.left, -faceRect.left); } if (faceRect.top < 0) { faceRect.inset(-faceRect.top, -faceRect.top); } if (faceRect.right > imageRect.right) { faceRect.inset(faceRect.right - imageRect.right, faceRect.right - imageRect.right); } if (faceRect.bottom > imageRect.bottom) { faceRect.inset(faceRect.bottom - imageRect.bottom, faceRect.bottom - imageRect.bottom); } hv.setup(mImageMatrix, imageRect, faceRect, mCircleCrop, mAspectX != 0 && mAspectY != 0); mImageView.add(hv); } // Create a default HightlightView if we found no face in the picture. private void makeDefault() { HighlightView hv = new HighlightView(mImageView); int width = mBitmap.getWidth(); int height = mBitmap.getHeight(); Rect imageRect = new Rect(0, 0, width, height); // make the default size about 4/5 of the width or height int cropWidth = Math.min(width, height) * 4 / 5; int cropHeight = cropWidth; if (mAspectX != 0 && mAspectY != 0) { if (mAspectX > mAspectY) { cropHeight = cropWidth * mAspectY / mAspectX; } else { cropWidth = cropHeight * mAspectX / mAspectY; } } int x = (width - cropWidth) / 2; int y = (height - cropHeight) / 2; RectF cropRect = new RectF(x, y, x + cropWidth, y + cropHeight); hv.setup(mImageMatrix, imageRect, cropRect, mCircleCrop, mAspectX != 0 && mAspectY != 0); mImageView.add(hv); } // Scale the image down for faster face detection. private Bitmap prepareBitmap() { if (mBitmap == null) { return null; } // 256 pixels wide is enough. if (mBitmap.getWidth() > 256) { mScale = 256.0F / mBitmap.getWidth(); } Matrix matrix = new Matrix(); matrix.setScale(mScale, mScale); Bitmap faceBitmap = Bitmap.createBitmap(mBitmap, 0, 0, mBitmap .getWidth(), mBitmap.getHeight(), matrix, true); return faceBitmap; } public void run() { mImageMatrix = mImageView.getImageMatrix(); Bitmap faceBitmap = prepareBitmap(); mScale = 1.0F / mScale; if (faceBitmap != null && mDoFaceDetection) { FaceDetector detector = new FaceDetector(faceBitmap.getWidth(), faceBitmap.getHeight(), mFaces.length); mNumFaces = detector.findFaces(faceBitmap, mFaces); } if (faceBitmap != null && faceBitmap != mBitmap) { faceBitmap.recycle(); } mHandler.post(new Runnable() { public void run() { mWaitingToPick = mNumFaces > 1; if (mNumFaces > 0) { for (int i = 0; i < mNumFaces; i++) { handleFace(mFaces[i]); } } else { makeDefault(); } mImageView.invalidate(); if (mImageView.mHighlightViews.size() == 1) { mCrop = mImageView.mHighlightViews.get(0); mCrop.setFocus(true); } if (mNumFaces > 1) { Toast t = Toast.makeText(CropImage.this, "Multi face crop help", Toast.LENGTH_SHORT); t.show(); } } }); } }; public static final int NO_STORAGE_ERROR = -1; public static final int CANNOT_STAT_ERROR = -2; public static void showStorageToast(Activity activity) { showStorageToast(activity, calculatePicturesRemaining()); } public static void showStorageToast(Activity activity, int remaining) { String noStorageText = null; if (remaining == NO_STORAGE_ERROR) { String state = Environment.getExternalStorageState(); if (state == Environment.MEDIA_CHECKING) { noStorageText = "Preparing card"; } else { noStorageText = "No storage card"; } } else if (remaining < 1) { noStorageText = "Not enough space"; } if (noStorageText != null) { Toast.makeText(activity, noStorageText, Toast.LENGTH_LONG).show(); } } public static int calculatePicturesRemaining() { try { /*if (!ImageManager.hasStorage()) { return NO_STORAGE_ERROR; } else {*/ String storageDirectory = Environment.getExternalStorageDirectory().toString(); StatFs stat = new StatFs(storageDirectory); float remaining = ((float) stat.getAvailableBlocks() * (float) stat.getBlockSize()) / 400000F; return (int) remaining; //} } catch (Exception ex) { // if we can't stat the filesystem then we don't know how many // pictures are remaining. it might be zero but just leave it // blank since we really don't know. return CANNOT_STAT_ERROR; }}}cropimage.xml
<?xml version="1.0" encoding="utf-8"?><FrameLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent"> <RelativeLayout android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="horizontal"> <view class="com.maibei.merchants.cropimage.CropImageView" android:id="@+id/image" android:background="#55000000" android:layout_width="fill_parent" android:layout_height="fill_parent" android:layout_x="0dip" android:layout_y="0dip" /> <RelativeLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal" android:paddingLeft="10dip" android:paddingRight="10dip" android:layout_alignParentBottom="true" android:layout_centerHorizontal="true"> <Button android:id="@+id/save" android:layout_width="100dip" android:layout_height="wrap_content" android:layout_alignParentLeft="true" android:text="确定" /> <Button android:id="@+id/discard" android:layout_width="100dip" android:layout_height="wrap_content" android:layout_alignParentRight="true" android:text="取消" /> RelativeLayout> RelativeLayout>FrameLayout>3、剪裁成功之后的回调
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
super.onActivityResult(requestCode, resultCode, intent);
try {
switch (requestCode) {
case GOTO_CROP_IMAGE_REQEST://图片裁剪回调
if(resultCode==RESULT_OK){
//imagePath即为裁剪后的图片路径
}
}
}catch (Exception e){
e.printStackTrace();
}
}
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