当我尝试从相机或画廊获得的图像，我得到的错误。这是logcat中的一部分：

When I try to get image from camera or gallery, I get error. Here is a part of logcat:

06-27 05:51:47.297: E/dalvikvm-heap(438): Out of memory on a 35295376-byte allocation.
06-27 05:51:47.312: E/dalvikvm(438): Out of memory: Heap Size=108067KB, Allocated=71442KB, Limit=131072KB
06-27 05:51:47.312: E/dalvikvm(438): Extra info: Footprint=108067KB, Allowed Footprint=108067KB, Trimmed=56296KB
06-27 05:51:47.312: E/PowerManagerService(438): Excessive delay when setting lcd brightness: mLcdLight.setBrightness(176, 1) spend 288ms, mask=2
06-27 05:51:48.052: E/dalvikvm-heap(4332): Out of memory on a 24023056-byte allocation.
06-27 05:51:48.057: E/dalvikvm(4332): Out of memory: Heap Size=63139KB, Allocated=40922KB, Limit=65536KB
06-27 05:51:48.057: E/dalvikvm(4332): Extra info: Footprint=63139KB, Allowed Footprint=63139KB, Trimmed=0KB
06-27 05:51:48.057: E/EmbeddedLogger(438): App crashed! Process: <my_app_name>

下面是我的code，提供我拍摄图像：

Here is my code that provides me to take an image:

Intent pickIntent = new Intent();
pickIntent.setType("image/*");
pickIntent.setAction(Intent.ACTION_GET_CONTENT);

Intent takePhotoIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);

Intent chooserIntent = Intent.createChooser(pickIntent, "Select or take a new Picture");
chooserIntent.putExtra(Intent.EXTRA_INITIAL_INTENTS, new Intent[] { takePhotoIntent });
startActivityForResult(chooserIntent, selectPic);

和 onActivityResult（）我做的：

Bitmap bitmapSelectedImage = null;
Uri selectedImage =  data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };

Cursor cursor = getContentResolver().query(selectedImage, filePathColumn, null, null, null);
cursor.moveToFirst();

String filePath = cursor.getString(cursor.getColumnIndex(filePathColumn[0]));
cursor.close();
bitmapSelectedImage = BitmapFactory.decodeFile(filePath); // Here is where do I get error.

我收到错误的 bitmapSelectedImage = BitmapFactory.de codeFILE（文件路径）; 行

我已经看过很多网站/主题，但没有人能帮助。

I have looked a lot websites/topics for it but no one could helped.

有什么建议？

推荐答案

你的内存分配堆大小的东西非常有限。 试图加载高分辨率图像从文件堆中很容易引起内存不足的错误。

your memory allocation heap size is something very limited. trying loading high resolution image from file to the heap can easily cause out of memory error.

假设相机应用确实采取了非常高的分辨率（几乎可以肯定是这样），你应该加载到内存中的位图只缩放版本所需的显示大小。

assuming that the camera app really taking a very high resolution (almost sure that is the case), you should load to memory only scaled version of the bitmap in the size required for displaying.

您已经建议的文件看 - 的http：//开发商.android.com /培训/显示，位图/负载bitmap.html 提供完整的functionall方法来做到这一点。

the document you already been suggested to see - http://developer.android.com/training/displaying-bitmaps/load-bitmap.html provides full functionall methods to do exactly that.

1）第一步骤是计算（而不加载到存储器）所需的规模。 这就是 calculateInSampleSize 方法。

1) first step is calculating (without loading to memory) the required scale. that's the calculateInSampleSize method.

public static int calculateInSampleSize(BitmapFactory.Options options, int reqWidth, int reqHeight) {
    // Raw height and width of image
    final int height = options.outHeight;
    final int width = options.outWidth;
    int inSampleSize = 1;

    if (height > reqHeight || width > reqWidth) {

        // Calculate ratios of height and width to requested height and
        // width
        final int heightRatio = Math.round((float)height / (float)reqHeight);
        final int widthRatio = Math.round((float)width / (float)reqWidth);

        // Choose the smallest ratio as inSampleSize value, this will
        // guarantee
        // a final image with both dimensions larger than or equal to the
        // requested height and width.
        inSampleSize = heightRatio < widthRatio ? heightRatio : widthRatio;
    }

    return inSampleSize;
}

2）第二步骤是使用步骤1中的完整的方法：

2) second step is the full method using step 1:

public static Bitmap getSampleBitmapFromFile(String bitmapFilePath, int reqWidth, int reqHeight) {
    // calculating image size
    BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true;
    BitmapFactory.decodeStream(new FileInputStream(new File(bitmapFilePath)), null, options);

    int scale = calculateInSampleSize(options, reqWidth, reqHeight);

    BitmapFactory.Options o2 = new BitmapFactory.Options();
    o2.inSampleSize = scale;

    return BitmapFactory.decodeStream(new FileInputStream(new File(bitmapFilePath)), null, o2);

}

reqHeight 和 reqWith 是在图像认为显示的图像像素的HIGHT和宽度。 所以我们说，你的形象的看法是100×100像素，所有你需要做的是：

reqHeight and reqWith are the hight and width in pixels of the image view that displaying the image. so let's say your image view is 100x100 pixels, all you need to do is:

bitmapSelectedImage = getSampleBitmapFromFile(filePath, 100, 100);