Android从filepath获取图像到Bitmap

Question

我正在尝试从手机上的特定文件路径设置图像.文件路径是手机上的照片.文件路径看起来像这样

/storage/emulated/0/Pictures/picture.jpg

这是代码.

Bitmap image = null;

//trying to set the image from filepath
try {
    image = BitmapFactory.decodeStream((InputStream) new URL(filepath).getContent());
} catch (MalformedURLException e) {
    e.printStackTrace();
} catch (IOException e) {
    e.printStackTrace();
}

if (image == null) {
    //This becomes true because the image is not set
    Toast.makeText(getApplicationContext(),"image == null",Toast.LENGTH_LONG).show();
}

最后,图像未设置.

Answer 1

使用此方法从Filepath获取位图

public Bitmap getBitmap(String path) {
try {
    Bitmap bitmap=null;
    File f= new File(path);
    BitmapFactory.Options options = new BitmapFactory.Options();
    options.inPreferredConfig = Bitmap.Config.ARGB_8888;

        bitmap = BitmapFactory.decodeStream(new FileInputStream(f), null, options);
     image.setImageBitmap(bitmap);
} catch (Exception e) {
    e.printStackTrace();
    return null;
}}

Answer 2

尝试这个：

File sd = Environment.getExternalStorageDirectory();
File imageFile = new File(sd+filepath);
BitmapFactory.Options bmOptions = new BitmapFactory.Options();
Bitmap image = BitmapFactory.decodeFile(imageFile.getAbsolutePath(),bmOptions);