Android

Question

我有一个用例，用户拍照并且照片必须保存在 sd 卡上。

我已经将相机的方向设置为纵向。

虽然 saving the photo on to SD card 我得到 out of memory .

这是日志 -

java.lang.RuntimeException: An error occured while executing doInBackground()
  at android.os.AsyncTask.done(AsyncTask.java:300)
  at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)
  at java.util.concurrent.FutureTask.setException(FutureTask.java:222)
  at java.util.concurrent.FutureTask.run(FutureTask.java:242)
  at android.os.AsyncTask$SerialExecutor.run(AsyncTask.java:231)
  at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
  at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
  at java.lang.Thread.run(Thread.java:841)
Caused by: java.lang.OutOfMemoryError
  at android.graphics.Bitmap.nativeCreate(Native Method)
  at android.graphics.Bitmap.createBitmap(Bitmap.java:809)
  at android.graphics.Bitmap.createBitmap(Bitmap.java:786)
  at android.graphics.Bitmap.createBitmap(Bitmap.java:718)
  at com.philips.cl.di.haircare.util.AppUtility.changeOrientationAndwriteDataToFile(AppUtility.java:382)
  at com.philips.cl.di.haircare.mirror.MirrorCameraViewFragment$SaveBitMap.doInBackground(MirrorCameraViewFragment.java:389)
  at com.philips.cl.di.haircare.mirror.MirrorCameraViewFragment$SaveBitMap.doInBackground(MirrorCameraViewFragment.java:369)
  at android.os.AsyncTask.call(AsyncTask.java:288)
  at java.util.concurrent.FutureTask.run(FutureTask.java:237)
  ... 4 more

这是我用来保存的功能 -

public static boolean changeOrientationAndwriteDataToFile(Context context,
        final File pictureFile, final byte[] data, final int camId)
        throws Exception {

    FileOutputStream fos = null;
    Bitmap realImage = null;
    try {

        fos = new FileOutputStream(pictureFile);
        realImage = BitmapFactory.decodeByteArray(data, 0, data.length);
        android.hardware.Camera.CameraInfo info = new android.hardware.Camera.CameraInfo();
        android.hardware.Camera.getCameraInfo(camId, info);
        Matrix matrix = new Matrix();

        int rotation = info.orientation;
        int camfacing = info.facing;

        if (camfacing == 1) {
            matrix.setScale(1, -1);
        }
        if (rotation != 0) {
            matrix.postRotate(rotation);

        } else {
            matrix.postRotate(-90);
        }
        realImage = Bitmap.createBitmap(realImage, 0, 0,
                realImage.getWidth(), realImage.getHeight(), matrix, false);
        MediaScannerConnection.scanFile(context,
                new String[] { pictureFile.getPath() },
                new String[] { "image/jpeg" }, null);

        // 100 means maximum quality
        return realImage.compress(Bitmap.CompressFormat.JPEG, 100, fos);
    } catch (final Exception e) {
        throw e;

    } finally {
        if (realImage != null) {
            realImage.recycle();
        }
        if (fos != null) {
            fos.close();
        }
    }

}

行号 - 382 内存不足。

realImage = Bitmap.createBitmap(realImage, 0, 0,
                realImage.getWidth(), realImage.getHeight(), matrix, false);

请帮忙解决这个问题。

谢谢。

Answer 1

您可以将 android:largeHeap="true" 添加到您的 AndroidManifest.xml

这是一种解决方法。小心使用。

Answer 2

创建新的位图对象而不是重新创建 realImage

Answer 3

我用BitmapFactory Options解决了这是更新后的方法 -

public static boolean changeOrientationAndwriteDataToFile(Context context,
        final File pictureFile, final byte[] data, final int camId, int reqWidth , int reqHeight )
        throws Exception {

    FileOutputStream fos = null;
    Bitmap realImage = null;
    Bitmap transformedImage = null ;
    try {

        android.hardware.Camera.CameraInfo info = new android.hardware.Camera.CameraInfo();
        android.hardware.Camera.getCameraInfo(camId, info);
        int rotation = info.orientation;
        int camfacing = info.facing;

        // Out of memory issue fixx -with the sample size concept

        BitmapFactory.Options options = new BitmapFactory.Options();

        options.inJustDecodeBounds = true ;

        BitmapFactory.decodeByteArray(data, 0, data.length, options);

        options.inSampleSize = calculateInSampleSize(options,reqWidth,reqHeight);

        System.out.println("Sample Size : " + options.inSampleSize);

        options.inPreferredConfig = Bitmap.Config.RGB_565;

        options.inJustDecodeBounds = false;

        realImage= BitmapFactory.decodeByteArray(data, 0, data.length, options);

        Matrix matrix = new Matrix();

        if (camfacing == 1) {
            matrix.setScale(1, -1);
        }
        if (rotation != 0) {
            matrix.postRotate(rotation);

        } else {
            matrix.postRotate(-90);
        }
        transformedImage = Bitmap.createBitmap(realImage, 0, 0,
                realImage.getWidth(), realImage.getHeight(), matrix, false);
        MediaScannerConnection.scanFile(context,
                new String[] { pictureFile.getPath() },
                new String[] { "image/jpeg" }, null);

        fos = new FileOutputStream(pictureFile);
        // 100 means maximum quality
        return transformedImage.compress(Bitmap.CompressFormat.JPEG, 100, fos);
    } catch (final Exception e) {
        throw e;

    } finally {
        if (realImage != null) {
            realImage.recycle();
        }
        if(transformedImage !=null)
        {
            transformedImage.recycle();
        }
        if (fos != null) {
            fos.close();
        }
    }

}

这里 - reqWidth 和 reqHeight 是 screen width 和 screen height 因为我必须在全屏上显示位图。

谢谢。

Android - 正在保存从相机拍摄的照片，内存不足

Android - Saving photo taken from Camera , Out of memory

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out-of-memory

heap-memory