位图太大，缩放后无法上传到纹理中

Question

我做了一个有很大背景的应用程序。它在Nexus7上运行得很好，但在我的Galaxy Nexus上，背景消失了，在logcat中给出了一个错误：位图太大，无法上传到纹理中（...）。

Display display = getWindowManager().getDefaultDisplay();
    width = display.getWidth();
    height = display.getHeight();


    //-------------------------------------------------------------------------------------------------------------

    ImageView achtergrond = (ImageView)findViewById(R.id.achtergrond);
    achtergrond.setImageBitmap(decodeSampledBitmapFromResource(getResources(), R.drawable.achtergrond, width, height));
} (...)

public static Bitmap decodeSampledBitmapFromResource(Resources res, int resId,
        int reqWidth, int reqHeight) {

    // First decode with inJustDecodeBounds=true to check dimensions
    final BitmapFactory.Options options = new BitmapFactory.Options();
    options.inJustDecodeBounds = true;
    BitmapFactory.decodeResource(res, resId, options);

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

    // Decode bitmap with inSampleSize set
    options.inJustDecodeBounds = false;
    return BitmapFactory.decodeResource(res, resId, options);
}

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;

谢谢你提前帮我！

Answer 1

将背景移动到drawable-nodpi文件夹。

正如你在其他类似问题的回答中已经说过的，每个设备对图像在屏幕上呈现为纹理的最大维度都有限制；宽度和高度通常为2048。然而，如果您将drawable放在一个没有密度限定符的文件夹中，Android将假定drawable是mdpi，并将其放大或缩小以用于其他密度。例如，如果您的屏幕具有xhdpi密度，drawable会放大两倍:1100x2=2200，这对于2048的限制来说太大了。