如何显示内部存储中的位图？

发布于 2024-12-07 07:09:48 字数 670 浏览 0 评论 0原文

我将位图图像保存在内部存储中，但无法重新显示它。我研究了很长时间但还没有找到。

public static void saveImages(Activity activity) throws IOException
    {  
        for (int i=0; i<categories.getItems().length; i++) {        
            OutputStream os2 = activity.openFileOutput(categories.getItems()[i].getName(),
                    Context.MODE_WORLD_READABLE);
            OutputStreamWriter osw2 = new OutputStreamWriter(os2);
            Bitmap bmp = ((BitmapDrawable)categories.getItems()[i].getCategoryImage()).getBitmap(); 
            bmp.compress(Bitmap.CompressFormat.PNG, 90, os2);
            osw2.close();
        }
    }

此代码可以成功保存图像。我将重新显示文件中的图像。谢谢

原文

I saved my bitmap images in my internal storage but i can't redisplay it. I've been researching for a long time but i've not find yet.

public static void saveImages(Activity activity) throws IOException
    {  
        for (int i=0; i<categories.getItems().length; i++) {        
            OutputStream os2 = activity.openFileOutput(categories.getItems()[i].getName(),
                    Context.MODE_WORLD_READABLE);
            OutputStreamWriter osw2 = new OutputStreamWriter(os2);
            Bitmap bmp = ((BitmapDrawable)categories.getItems()[i].getCategoryImage()).getBitmap(); 
            bmp.compress(Bitmap.CompressFormat.PNG, 90, os2);
            osw2.close();
        }
    }

This code works succesfully to save images. I will redisplay that images from files.
Thank you

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樱桃奶球 2024-12-14 07:09:48

试试这个

    File f=new File(yourdir, imagename);
    Bitmap b = BitmapFactory.decodeStream(new FileInputStream(f));

Try this

    File f=new File(yourdir, imagename);
    Bitmap b = BitmapFactory.decodeStream(new FileInputStream(f));

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深海夜未眠 2024-12-14 07:09:48

尝试以下代码：使用 openFileInput 获取您保存的流，然后对它们进行解码：

for (int i=0; i<categories.getItems().length; i++) {        
InputStream is = activity.openFileInput(categories.getItems()[i].getName());
Bitmap b = BitmapFactory.decodeStream(is);

// do whatever you need with b
}

Try this code: uses openFileInput to fetch the streams you saved and then decodes them:

for (int i=0; i<categories.getItems().length; i++) {        
InputStream is = activity.openFileInput(categories.getItems()[i].getName());
Bitmap b = BitmapFactory.decodeStream(is);

// do whatever you need with b
}

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