java - Android从文件路径获取图像到位图

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。文件路径可能如下所示

/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();
}

最终图像没有设置。

Answer 1

使用此方法从文件路径获取位图

public Bitmap getBitmap(String path) {
Bitmap bitmap=null;
try {
    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 bitmap ;
}