ImageView 在 Android 中没有变化

Question

i am making a facebook login page, importing image too, my code:

 protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_login);

    info = findViewById(R.id.info);
    profile = findViewById(R.id.profile);
    login = findViewById(R.id.login_button);

    callbackManager=CallbackManager.Factory.create();

    login.registerCallback(callbackManager, new FacebookCallback<LoginResult>() {
        @Override
        public void onSuccess(LoginResult loginResult) {
            String usrid=loginResult.getAccessToken().getUserId();
            info.setText("user ID: "+usrid);


            profile.setImageResource(R.drawable.abs);//doesn't work
            profile.getLayoutParams().height=20;//it's work


            String imgURL ="https://graph.facebook.com/"+usrid+"/picture?type=large";
            Picasso.get().load(imgURL).fit().into(profile);//does not work

        }

and the xml of the image:

   <ImageView
    android:id="@+id/profile"
    android:layout_width="100dp"
    android:layout_height="100dp"
    android:layout_marginTop="50dp"
    app:layout_constraintEnd_toEndOf="parent"
    app:layout_constraintHorizontal_bias="0.498"
    app:layout_constraintStart_toStartOf="parent"
    app:layout_constraintTop_toBottomOf="@+id/info"
    android:foreground="@drawable/ic_launcher_background"/>

i tried to change the photo using Picasso but doesn't work
i tried using a photo i have used before R.drawable.abs , doesn't work also
changing the hieght of the imageview works

so what is wrong?

Answer 1

Not sure why the forground in your xml is needed but you should be able to replace it with this in your java code:

Picasso.get()
.load(imgURL)
.placeholder(R.drawable. ic_launcher_background)
.fit()
.into(profile);

This will replace the placeholder once the image is loaded.

Answer 2

changing android:foreground to app:srcCompat solve it