4

我想将“icon”字符串转换为字节数组，而不是将其转换为位图。问题是模拟器中的图像没有显示。我想我做得不对，但我知道为什么。非常感谢您的帮助。提前致谢

这是我的 JSON 数据：

{
    "project": [
        {
            "abbreviation": "abd",
            "customer": "customer1",
            "description": "description1",
            "icon": "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",
            "name": "projectname1",
            "plannedEndDate": "2012-05-25T00:00:00+01:00",
            "plannedStartDate": "2012-05-23T00:00:00+01:00",
            "projectStatus": {
                "name": "Opened"
            },
            "realEndDate": "2012-05-25T00:00:00+01:00",
            "realStartDate": "2012-05-23T00:00:00+01:00"
        }
    ]
}

我这样做了，但它不起作用：

// convert String to byte[]
String stringToConvert = project.getIcon();
byte[] theByteArray = stringToConvert.getBytes();

// convert Byte[] to Bitmap
Bitmap bm = BitmapFactory.decodeByteArray(theByteArray,
        0, theByteArray.length);
DisplayMetrics dm = new DisplayMetrics();

holder.imageIcon.setMinimumHeight(dm.heightPixels);
holder.imageIcon.setMinimumWidth(dm.widthPixels);
holder.imageIcon.setImageBitmap(bm);
4

3 回答 3

17

从字符串icon 看来，您已使用Base64将图像转换为字符串。因此，您必须使用 Base64 本身将其转换回字节

// Receiving side
byte[] data = Base64.decode(iconString, Base64.DEFAULT);

希望这可以帮助...

于 2013-05-20T11:43:29.053 回答
3

要将base64 解码string为byte[]：

byte[] imgBytes = Base64.decode(strBase64.getBytes());

要将您转换byte[]为Bitmap：

Bitmap bitmap = BitmapFactory.decodeByteArray(imgBytes, 0, imgBytes.length)

现在使用您bitmap的图像的setImageBitmap方法来显示输出。例如：

icon.setImageBitmap(bitmap);
于 2013-05-20T11:44:18.453 回答
2

您的图标是 Base64 编码的，请使用Base64 类对其进行解码。

于 2013-05-20T11:43:56.087 回答