如何加载从资产的形象？ [英] How to load a image from assets?

问题描述

我需要加载从资产的图像，以避免升级Froyo 2.2.2错误调整POT图像在某些特殊情况下。的方式，以避免它是从资产目录加载的图像文件。

i need to load a image from assets to avoid a froyo 2.2.2 bug resizing POT images in some particular cases. The way to avoid it is loading the image files from assets dir.

我想用这样的：

        String imagePath = "radiocd5.png";
    AssetManager mngr = context.getAssets();
    // Create an input stream to read from the asset folder
    InputStream is=null;
    try {
        is = mngr.open(imagePath);
    } catch (IOException e1) {  e1.printStackTrace();}

    //Get the texture from the Android resource directory
    //InputStream is = context.getResources().openRawResource(R.drawable.radiocd5);
    Bitmap bitmap = null;
    try {
        //BitmapFactory is an Android graphics utility for images
        bitmap = BitmapFactory.decodeStream(is);

    } finally {
        //Always clear and close
        try {
            is.close();
            is = null;
        } catch (IOException e) {
        }
    }

但我得到的NullPointerException就行了 is.close（）;

我捕获FileNotFoundException异常：radiocd5.png，但该文件是对我的资产目录：•

i capture a FileNotFoundException: radiocd5.png, but that file is on my assets directory :S

我在做什么不好？该文件称为 radiocd5.png ，它是在资产目录

What am i doing bad? The file is called radiocd5.png and it is on the assets directory

推荐答案

您可以按照我的教程从资产中显示的数据：的 HTTPS：//xjaphx.word$p$pss.com/2011/10/02/store-and-use-files-在-资产/
与装载图片和文字的样品显示。

You can follow my tutorials on displaying data from Assets: https://xjaphx.wordpress.com/2011/10/02/store-and-use-files-in-assets/
The sample with loading image and text to display.

我现在又增加所提供的链接的相关部分 （如遇地震或东西）;-) TAIFUN

I now added the relevant part of the provided link (in case of earthquake or something) ;-) Taifun

// load image
try {
    // get input stream
    InputStream ims = getAssets().open("avatar.jpg");
    // load image as Drawable
    Drawable d = Drawable.createFromStream(ims, null);
    // set image to ImageView
    mImage.setImageDrawable(d);
}
catch(IOException ex) {
    return;
}

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