Android上设置ColorFilter后如何保存Drawable
为了将颜色过滤器应用于takePicure方法中的字节数组,我将其转换为Drawable。调用Drawable.setColorFilter后,我将其保存为图像文件。但是,颜色过滤器不适用于图像文件。在这种情况下,如何保存可绘制应用的颜色过滤器。这是我的密码Android上设置ColorFilter后如何保存Drawable,android,drawable,colormatrixfilter,Android,Drawable,Colormatrixfilter,为了将颜色过滤器应用于takePicure方法中的字节数组,我将其转换为Drawable。调用Drawable.setColorFilter后,我将其保存为图像文件。但是,颜色过滤器不适用于图像文件。在这种情况下,如何保存可绘制应用的颜色过滤器。这是我的密码 Camera.PictureCallback mPicture = new Camera.PictureCallback() { @Override public void onPictureTaken(by
Camera.PictureCallback mPicture = new Camera.PictureCallback() {
@Override
public void onPictureTaken(byte[] bytes, Camera camera) {
mView.mRenderer.restartPreview();
String storageDir = Environment.getExternalStorageDirectory().getAbsolutePath()
+ "/" + Environment.DIRECTORY_DCIM + "/Camera";
File dir = new File(storageDir);
if (!dir.exists()) dir.mkdir();
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
String path = storageDir + "/IMG_" + timeStamp + ".jpg";
File file = new File(path);
try {
ColorMatrix matrix = new ColorMatrix(new float[] {
1, 0, 0, 0, mView.mRenderer.mTest,
0, 1, 0, 0, mView.mRenderer.mTest,
0, 0, 1, 0, mView.mRenderer.mTest,
0, 0, 0, 1, 0
});
Drawable image = new BitmapDrawable(BitmapFactory.decodeByteArray(bytes, 0, bytes.length));
image.setColorFilter(new ColorMatrixColorFilter(matrix));
Bitmap bitmap = ((BitmapDrawable)image).getBitmap();
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
byte[] bytedata = stream.toByteArray();
FileOutputStream fos = new FileOutputStream(file);
fos.write(bytedata);
fos.flush();
fos.close();
Intent intent = new Intent(Intent.ACTION_MEDIA_SCANNER_SCAN_FILE);
Uri uri = Uri.parse("file://" + path);
intent.setData(uri);
sendBroadcast(intent);
}
catch (Exception e) {
Log.e("CheckLog", e.getMessage());
return;
}
}
};
mView.mrender.mTest是一个由SeekBar控制的变量。提前感谢。使用画布应用矩阵
Bitmap bitmap = Bitmap.createBitmap(original.getWidth(),
original.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
Paint paint = new Paint();
paint.setColorFilter(new ColorMatrixColorFilter(
matrix));
canvas.drawBitmap(original, 0, 0, paint);
return bitmap;
使用画布应用矩阵
Bitmap bitmap = Bitmap.createBitmap(original.getWidth(),
original.getHeight(), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
Paint paint = new Paint();
paint.setColorFilter(new ColorMatrixColorFilter(
matrix));
canvas.drawBitmap(original, 0, 0, paint);
return bitmap;
使用Drawabledraw方法在画布上绘制您的Drawable-使用新的CanvasBitMap创建它感谢您的建议。非常有帮助使用Drawabledraw方法在画布上绘制您的Drawable-使用新的CanvasBitMap创建它感谢您的建议。非常有帮助谢谢您的代码帮助我克服了这个问题:@皮尤斯非常感谢你,伙计,这正是我要找的汉克斯!您的代码帮助我克服了这个问题:@皮尤斯非常感谢你,伙计,这正是我想要的