位图太大,无法在缩小后上传到纹理中

Question

我做了一个有很大背景的应用程序.它在Nexus 7上完美运行,但在我的Galaxy Nexus上,背景消失了,并在logcat中给出了错误:位图太大而无法上传到纹理(...).

我已经阅读了这篇文章并使用了那里的代码.我用来设置背景的代码是这样的:

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;

}

我的R.drawable.achtergrond的分辨率是:1100x539.此外,如果我注释掉该规则(setBitmapImage),那么错误就会停止.整个时间背景都没有显示在我的Galaxy Nexus上,而它确实显示在我的Nexus 7上.图像很大,可以达到很好的分辨率.背景图像目前位于drawable文件夹中.

谢谢你提前帮助我!

Answer 1

将背景移动到该drawable-nodpi文件夹.

因为它的中已经说其他的答案到类似的问题你的,每个设备具有上的图像可能需要被呈现为在屏幕上的纹理的最大尺寸的限制; 宽度和高度通常为2048.但是,如果将drawable放在没有密度限定符的文件夹中,Android会假定drawable是mdpi并将其向上或向下缩放以获得其他密度.例如,如果您的屏幕具有xhdpi密度,则drawable会按比例放大两倍:1100 x 2 = 2200,这对于2048限制来说太大了.