Android-当加载屏幕出现时，如何防止所有用户在活动上进行交互？

Question

我有一个具有加载状态的注册活动。

这是活动未处于加载状态时的样子：

当活动处于加载状态时，将显示进度条：

加载状态由视图和进度条小部件组成。

当活动处于加载状态时，用户仍然可以与活动交互，并且按钮仍然清晰可见。如何防止所有用户交互并使按钮显示在视图小部件的后面？

编辑：

我可以用下面的代码解决上述问题：

SignUp.xml：

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="fill_parent"
    android:layout_height="match_parent"
    android:background="@drawable/home_edit"
    android:fillViewport="true"
    tools:layout_editor_absoluteX="1dp"
    tools:layout_editor_absoluteY="1dp">

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:textAlignment="gravity"
        tools:context=".MainActivity">

        <TextView
            android:id="@+id/textView2"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:fontFamily="cursive"
            android:text="Header"
            android:textColor="#FF0000"
            android:textSize="60sp"
            android:visibility="invisible"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            tools:layout_editor_absoluteY="10dp" />

        <TextView
            android:id="@+id/textView3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:fontFamily="cursive"
            android:text="Subheader"
            android:textColor="#00B7FF"
            android:textSize="60sp"
            android:visibility="invisible"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/textView2" />

        <TextView
            android:id="@+id/textView4"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_marginStart="20dp"
            android:layout_marginTop="30dp"
            android:fontFamily="sans-serif-medium"
            android:text="Sign Up"
            android:textColor="#FFFFFF"
            android:textSize="34sp"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/textView3" />

        <EditText
            android:id="@+id/username_sign_up"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:layout_marginStart="20dp"
            android:layout_marginTop="20dp"
            android:layout_marginEnd="20dp"
            android:background="@android:drawable/editbox_background"
            android:ems="10"
            android:hint="Username"
            android:inputType="textPersonName"
            android:paddingLeft="5dp"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/textView4" />

        <EditText
            android:id="@+id/name_sign_up"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:layout_marginStart="20dp"
            android:layout_marginEnd="20dp"
            android:background="@android:drawable/editbox_background"
            android:ems="10"
            android:hint="Name"
            android:inputType="textPersonName"
            android:paddingLeft="5dp"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.0"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/username_sign_up" />

        <EditText
            android:id="@+id/surname_sign_up3"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:layout_marginStart="20dp"
            android:layout_marginEnd="20dp"
            android:background="@android:drawable/editbox_background"
            android:ems="10"
            android:hint="Surname"
            android:inputType="textPersonName"
            android:paddingLeft="5dp"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="1.0"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/name_sign_up" />

        <Button
            android:id="@+id/register_sign_up"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_marginStart="20dp"
            android:layout_marginTop="30dp"
            android:layout_marginEnd="20dp"
            android:layout_marginBottom="30dp"
            android:background="#00F7FF"
            android:onClick="SignUpButton"
            android:text="Register"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.0"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/password_confirm_sign_up"
            app:layout_constraintVertical_bias="0.0" />

        <EditText
            android:id="@+id/email_sign_up"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:layout_marginStart="20dp"
            android:layout_marginEnd="20dp"
            android:background="@android:drawable/editbox_background"
            android:ems="10"
            android:hint="Email"
            android:inputType="textEmailAddress"
            android:paddingLeft="5dp"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/surname_sign_up3" />

        <EditText
            android:id="@+id/password_sign_up"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:layout_marginStart="20dp"
            android:layout_marginEnd="20dp"
            android:background="@android:drawable/editbox_background"
            android:ems="10"
            android:hint="Password"
            android:inputType="textPassword"
            android:paddingLeft="5dp"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/email_sign_up" />

        <EditText
            android:id="@+id/password_confirm_sign_up"
            android:layout_width="match_parent"
            android:layout_height="50dp"
            android:layout_marginStart="20dp"
            android:layout_marginEnd="20dp"
            android:background="@android:drawable/editbox_background"
            android:ems="10"
            android:hint="Password Confirm"
            android:inputType="textPassword"
            android:paddingLeft="5dp"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintHorizontal_bias="0.0"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/password_sign_up" />

        <View
            android:id="@+id/interaction_blocker_sign_up"
            android:layout_width="0dp"
            android:layout_height="0dp"
            android:background="#CC000000"
            android:clickable="true"
            android:elevation="5dp"
            android:visibility="invisible"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <ProgressBar
            android:id="@+id/loading_icon_sign_up"
            style="?android:attr/progressBarStyle"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:elevation="6dp"
            android:visibility="invisible"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="@+id/interaction_blocker_sign_up"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

    </androidx.constraintlayout.widget.ConstraintLayout>
</ScrollView>

SignUp.java：

public class SignUp extends AppCompatActivity {

    private FirebaseAuth mAuth;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_sign_up);

        mAuth = FirebaseAuth.getInstance();
    }

    public void SignUpButton(View view)
    {
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE, WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE);

        findViewById(R.id.interaction_blocker_sign_up).setVisibility(View.VISIBLE);
        findViewById(R.id.loading_icon_sign_up).setVisibility(View.VISIBLE);

        EditText emailValue = (EditText)findViewById(R.id.email_sign_up);
        EditText passwordValue = (EditText)findViewById(R.id.password_sign_up);

        mAuth.createUserWithEmailAndPassword(emailValue.getText().toString(), passwordValue.getText().toString())
                .addOnCompleteListener(this, new OnCompleteListener<AuthResult>(){
                    @Override
                    public void onComplete(@NonNull Task<AuthResult> task){
                        if(task.isSuccessful()){
                            Log.d("SignUp", "createUserWithEmail:success");
                            FirebaseUser user = mAuth.getCurrentUser();
                            Toast.makeText(SignUp.this, "Authentication Success", Toast.LENGTH_SHORT).show();
                            //Go back to home screen.
                        }
                        else{
                            Log.w("SignUp", "createUserWithEmail:failure", task.getException());
                            Toast.makeText(SignUp.this, "Authentication Failed", Toast.LENGTH_SHORT).show();
                        }
                    }
                });
    }
}

但是，getWindow（）。setFlags（WindowManager.LayoutParams.FLAG\u NOT\u FOCUSABLE，WindowManager.LayoutParams.FLAG\u NOT\u FOCUSABLE） 未按预期工作。在加载小部件出现后，我仍然能够将文本键入EditText。如何从所有小部件中移除焦点？




Answer 1

对于按钮问题，您只需确保视图位于yourLayout中的按钮之后。xml文件

对于交互问题，只需添加此方法来显示/隐藏进度指示器

private void loading (Boolean isLoading){
    if(isLoading){
        progressView.setVisibility(View.VISIBLE);
        container.setEnabled(false); // your container that contains your items that should be disabled
    }
    else{
        progressView.setVisibility(View.INVISIBLE);
        container.setEnabled(true); // your container that contains your items that should be disabled
    }
}

我认为这可以解决您的问题，如果您有任何问题，请发布有问题的代码，以确定问题所在，因为我们没有获得有关问题的足够信息。