位图太大无法上传到纹理中 [英] Bitmap too large to be uploaded into a texture

问题描述

我在 drawable 目录中有一个 960x1440 大小的图像文件.当应用程序启动时，图像不会作为背景加载，并且在 logcat 中我看到:

I've in drawable directory an image file with the 960x1440 size. When the app start, the image is not loaded as background and in the logcat I see:

位图太大而无法上传到纹理中 (2880x4320, max=4096x4096)

如果图片是 960x1440，为什么会显示 2880x4320?

Why it says 2880x4320 if the image is 960x1440 ?

位图通过xml加载:

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"

    android:layout_centerHorizontal="true" 
    android:layout_centerVertical="true"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:background="@drawable/launcher_bg"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin">

推荐答案

/drawable/ 文件夹中没有任何指定的图像被认为是默认"，即 1dp = 1px那是 mpdi，然后因为你实际运行的设备是 xxhdpi 图像在运行时被放大.

an image in the /drawable/ folder without any specification is considered to be the "default", that is for 1dp = 1px that is mpdi, then because the device you're actually running is xxhdpi that image get's scaled up during runtime.

原始图像可能是 960x1440，但是从 mdpi 转换为 xxhdpi 的大小是 3 倍，所以你的 960x1440 变成 (3*960)x(3*1440) = 2880x4320，纹理太大，无法应用于硬件加速视图.

The original image might be 960x1440, but the conversion from mdpi to xxhdpi is 3 times the size, so your 960x1440 becomes (3*960)x(3*1440) = 2880x4320, which is too large of a texture to apply to the hardware accelerated views.

所以要解决这个问题其实很简单，你有两个选择:

so to fix that is actually pretty simple, you have two choices:

1. 将您的图像移动到 /drawable-nodpi/ 这很简单，可以减小 .apk 大小，但低端设备可能难以加载如此大的图像.
2. 在所有密度上创建缩放图像mdpi、hdpi、xhdpi、xxhdpi 以避免运行时过度缩放并在旧设备上使用较小的图像.

1. move your image to /drawable-nodpi/ that's simple, reduces the .apk size, but lower end devices might struggle to load such a big image.
2. create scaled images on all densities mdpi, hdpi, xhdpi, xxhdpi to avoid runtime over-scaling and to have smaller images on older devices.

这篇关于位图太大无法上传到纹理中的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！