打开键盘时滚动整个布局

Question

我创建了一个简单的登录活动，其外观如下：

我希望在将电子邮件EditText聚焦后，整个布局都将移至“登录”按钮的底部。

我写了这段代码：

public class SignInActivity extends AppCompatActivity {

    private EditText Et_Email, Et_Password;
    private Button Btn_Login;
    private ScrollView Sv_Layout;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_sign_in);
        initUI();
    }

    private void initUI() {

        getSupportActionBar().hide();

        Sv_Layout = findViewById( R.id.sv_SignInLayout );
        Et_Email = findViewById(R.id.et_SignInEmail);
        Et_Password = findViewById(R.id.et_SignInPassword);
        Btn_Login = findViewById(R.id.btn_SignIn );

        Et_Email.setOnFocusChangeListener(new View.OnFocusChangeListener() {
            @Override
            public void onFocusChange(View arg0, boolean hasfocus) {
                if (hasfocus) {
                    focusOnView();
                } else {
                    Log.e("TAG", "e1 not focused");
                }
            }
        });

    }


    private final void focusOnView(){
        Sv_Layout.post(new Runnable() {
            @Override
            public void run() {
                Sv_Layout.scrollTo(0, Btn_Login.getBottom());
            }
        });
    }

}
XML为：

<?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:id="@+id/sv_SignInLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@color/colorWhite"
    android:fillViewport="true"
    tools:context=".SignInActivity">

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    <ImageView
        android:id="@+id/iv_SignIn"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginStart="8dp"
        android:layout_marginTop="48dp"
        android:layout_marginEnd="8dp"
        android:adjustViewBounds="true"
        android:scaleType="fitXY"
        android:src="@drawable/img_signin"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHeight_percent="0.2"
        app:layout_constraintHorizontal_bias="0.55"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintWidth_percent="0.48" />

    <TextView
        android:id="@+id/tv_SignIn"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_marginStart="40dp"
        android:layout_marginTop="40dp"
        android:text="@string/ActivitySignIn_SignIn"
        android:textColor="@color/colorLightPurple"
        android:textSize="24sp"
        app:layout_constraintHeight_percent="0.05"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/iv_SignIn"
        app:layout_constraintWidth_percent="0.3" />

    <EditText
        android:id="@+id/et_SignInEmail"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_marginStart="40dp"
        android:layout_marginTop="36dp"
        android:layout_marginEnd="40dp"
        android:background="@drawable/btn_underline"
        android:drawableStart="@drawable/ic_signin_email"
        android:drawablePadding="10dp"
        android:hint="@string/ActivitySignIn_EmailHint"
        android:textColor="@color/colorBlackText"
        android:inputType="textEmailAddress"
        app:layout_constraintHeight_percent="0.06"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/tv_SignIn" />

    <EditText
        android:id="@+id/et_SignInPassword"
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:layout_marginStart="40dp"
        android:layout_marginEnd="40dp"
        android:layout_marginTop="16dp"
        android:background="@drawable/btn_underline"
        android:drawableStart="@drawable/ic_login_lock"
        android:drawablePadding="10dp"
        android:hint="@string/ActivitySignIn_PasswordHint"
        android:inputType="textPassword"
        android:textColor="@color/colorBlackText"
        app:layout_constraintHeight_percent="0.06"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/et_SignInEmail" />

    <Button
        android:id="@+id/btn_SignIn"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginStart="40dp"
        android:layout_marginBottom="80dp"
        android:layout_marginEnd="40dp"
        android:background="@drawable/btn_rounded_purple"
        android:text="@string/ActivitySignIn_SignIn"
        android:textAllCaps="false"
        android:textColor="@color/colorWhite"
        android:textSize="20sp"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHeight_percent="0.08"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"/>

    </androidx.constraintlayout.widget.ConstraintLayout>

</ScrollView>
有什么理由什么也没发生？我调试了该应用程序，以检查它是否吸引了焦点，并且可以，但是由于某种原因，它仍然不会移动滚动视图。

我的清单现在有android:windowSoftInputMode="adjustPan"，因为如果删除它，整个布局会缩小。

谢谢！

我创建了一个简单的Sign-In活动，其外观如下：我希望一旦将电子邮件EditText聚焦后，整个布局将移至Sign In按钮的底部。我写了这个...

Answer 1

以编程方式在Fragment / activity的onCreate中设置softInputLayout。

Answer 2

为在清单文件中保存布局的活动添加以下属性