我想从firebase读取图像文件,我写了这段代码,它不断给我这个错误。 请任何人都可以帮助我与 let database=firebase.database();
var fileButton = document.getElementById("fileButton");
var main = document.getElementById("main");
var bildeu
MainActivity public class MainActivity extends AppCompatActivity {
private static final String TAG = "MainActivity";
public static final String ANONYMOUS = "anonymous";
public static