scrollflags - expandable toolbar android

El desplazamiento no funciona en NestedScrollView cuando intenta desplazarse desde las vistas con eventos de clic

Question

Estoy usando un NestedScrollView en un diseño, y estoy tratando de usar el nuevo CoordinatorLayout de la biblioteca de soporte de diseño para CollapsingToolbarLayout.

Mi archivo de diseño se ve así:

<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <android.support.design.widget.AppBarLayout
        android:id="@+id/appbar"
        android:layout_width="match_parent"
        android:layout_height="200dp"
        android:fitsSystemWindows="true"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">

        <android.support.design.widget.CollapsingToolbarLayout
            android:id="@+id/collapsing_toolbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:fitsSystemWindows="true"
            app:contentScrim="?attr/colorPrimary"

            app:expandedTitleMarginStart="48dp"
            app:layout_scrollFlags="scroll|exitUntilCollapsed">
            <!--            app:expandedTitleMarginEnd="64dp"-->
            <ImageView
                android:layout_width="match_parent"
                android:layout_height="200dp"
                android:scaleType="centerCrop"
                android:src="@drawable/image_load_default_big" />

            <android.support.v7.widget.Toolbar
                android:id="@+id/anim_toolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                app:layout_collapseMode="pin"
                app:popupTheme="@style/ThemeOverlay.AppCompat.Light">
            </android.support.v7.widget.Toolbar>

        </android.support.design.widget.CollapsingToolbarLayout>

    </android.support.design.widget.AppBarLayout>

    <android.support.v4.widget.NestedScrollView
        android:id="@+id/nestedScrollVw"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        app:layout_scrollFlags="scroll|enterAlways"
        android:fitsSystemWindows="true"
        app:layout_behavior="@string/appbar_scrolling_view_behavior">

        <RelativeLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:clickable="false"
            android:fitsSystemWindows="true">

            <LinearLayout
                android:id="@+id/changePasswordButtonContainer"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="vertical">

                <Button
                    android:id="@+id/changePasswordExpand"
                    android:layout_width="match_parent"
                    android:layout_height="55dp"
                    android:background="@drawable/back_img"
                    android:text="Change Your Password"
                    android:textColor="@color/white"
                    android:textStyle="bold" />
            </LinearLayout>


            <LinearLayout
                android:id="@+id/changePasswordContainer"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_below="@id/changePasswordButtonContainer"
                android:layout_centerInParent="true"
                android:orientation="vertical"
                android:padding="10dp">


                <TextView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center_horizontal"
                    android:text="Edit Your Password"
                    android:textColor="@color/orange" />

                <EditText
                    android:id="@+id/etUserName"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_marginTop="10dp"
                    android:background="@drawable/edittext_default_bg"
                    android:drawableLeft="@drawable/password_icon"
                    android:drawableRight="@drawable/tick"
                    android:hint=" Old Password"
                    android:padding="12dp"
                    android:password="true"
                    android:textColorHint="#b5b5b5" />

                <EditText
                    android:id="@+id/etPass"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_marginTop="10dp"
                    android:background="@drawable/edittext_default_bg"
                    android:drawableLeft="@drawable/password_icon"
                    android:drawableRight="@drawable/cross"
                    android:hint=" New Password"
                    android:padding="12dp"
                    android:password="true"
                    android:textColorHint="#b5b5b5" />

                <RadioButton
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:paddingBottom="20dp"
                    android:paddingTop="20dp"
                    android:text="show password" />

                <Button
                    android:id="@+id/btnSingIn"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_margin="4dp"
                    android:background="@drawable/login_button_background"
                    android:paddingBottom="8dp"
                    android:paddingTop="8dp"
                    android:text="Done"
                    android:textColor="@color/white"
                    android:textStyle="bold" />
            </LinearLayout>

            <LinearLayout
                android:id="@+id/dealerToDealerContainer"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_below="@+id/changePasswordContainer"
                android:orientation="vertical">

                <Button
                    android:id="@+id/dealerToDealerExpand"
                    android:layout_width="match_parent"
                    android:layout_height="55dp"
                    android:background="@drawable/back_img"
                    android:text="Dealer To Dealer Platform No"
                    android:textColor="@color/white"
                    android:textStyle="bold" />
            </LinearLayout>

            <LinearLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:layout_below="@id/dealerToDealerContainer"
                android:layout_centerInParent="true"
                android:orientation="vertical"
                android:padding="10dp">


                <TextView
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="center_horizontal"
                    android:text="Edit Number"
                    android:textColor="@color/orange" />

                <EditText
                    android:id="@+id/dealerToDealerNo"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_marginTop="10dp"
                    android:background="@drawable/edittext_default_bg"
                    android:drawableLeft="@drawable/password_icon"
                    android:drawableRight="@drawable/tick"
                    android:hint=" 56546789"
                    android:padding="12dp"
                    android:password="true"
                    android:textColorHint="#b5b5b5" />

                <Button
                    android:id="@+id/dealerToDealerNoDone"
                    android:layout_width="match_parent"
                    android:layout_height="wrap_content"
                    android:layout_margin="4dp"
                    android:background="@drawable/login_button_background"
                    android:paddingBottom="8dp"
                    android:paddingTop="8dp"
                    android:text="Done"
                    android:textColor="@color/white"
                    android:textStyle="bold" />
            </LinearLayout>

        </RelativeLayout>
    </android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>

Cuando intento desplazarme, a veces no funciona. La razón para esto es que otros elementos del diseño con eventos de clic consumen el evento táctil. Básicamente EditText, RadioButton, Button están consumiendo eventos táctiles. Alguna sugerencia para resolver este problema?

Answer 1

En su AndroidManifest.xml, asegúrese de tener el atributo ''windowSoftInputMode'' establecido en ''adjustResize''.

<activity android:name=".activities.YourActivity"  android:windowSoftInputMode="adjustResize">

Answer 2

La solución aquí (una solución para este problema de Google anulando el control nestledScroll) https://gist.github.com/chrisbanes/8391b5adb9ee42180893300850ed02f2 funcionaba como un amuleto.

Definir FixAppBarLayoutBehavior.java

/*
 * Copyright (C) 2017 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package your.package;

import android.content.Context;
import android.support.design.widget.AppBarLayout;
import android.support.design.widget.CoordinatorLayout;
import android.support.v4.view.ViewCompat;
import android.util.AttributeSet;
import android.view.View;

/**
 * Workaround AppBarLayout.Behavior for https://issuetracker.google.com/66996774
 *
 * See https://gist.github.com/chrisbanes/8391b5adb9ee42180893300850ed02f2 for
 * example usage.
 *
 * Change the package name as you wish.
 */
public class FixAppBarLayoutBehavior extends AppBarLayout.Behavior {

    public FixAppBarLayoutBehavior() {
        super();
    }

    public FixAppBarLayoutBehavior(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    @Override
    public void onNestedScroll(CoordinatorLayout coordinatorLayout, AppBarLayout child, View target,
            int dxConsumed, int dyConsumed, int dxUnconsumed, int dyUnconsumed, int type) {
        super.onNestedScroll(coordinatorLayout, child, target, dxConsumed, dyConsumed,
                dxUnconsumed, dyUnconsumed, type);
        stopNestedScrollIfNeeded(dyUnconsumed, child, target, type);
    }

    @Override
    public void onNestedPreScroll(CoordinatorLayout coordinatorLayout, AppBarLayout child,
            View target, int dx, int dy, int[] consumed, int type) {
        super.onNestedPreScroll(coordinatorLayout, child, target, dx, dy, consumed, type);
        stopNestedScrollIfNeeded(dy, child, target, type);
    }

    private void stopNestedScrollIfNeeded(int dy, AppBarLayout child, View target, int type) {
        if (type == ViewCompat.TYPE_NON_TOUCH) {
            final int currOffset = getTopAndBottomOffset();
            if ((dy < 0 && currOffset == 0)
                    || (dy > 0 && currOffset == -child.getTotalScrollRange())) {
                ViewCompat.stopNestedScroll(target, ViewCompat.TYPE_NON_TOUCH);
            }
        }
    }
}

Uso en java:

AppBarLayout abl = findViewById(R.id.app_bar);
((CoordinatorLayout.LayoutParams) abl.getLayoutParams()).setBehavior(new FixAppBarLayoutBehavior());

Uso en xml:

<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
        xmlns:app="http://schemas.android.com/apk/res-auto"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

    <android.support.design.widget.AppBarLayout
            android:id="@+id/app_bar"
            android:layout_height="..."
            android:layout_width="..."
            app:layout_behavior="your.package.FixAppBarLayoutBehavior">

    </android.support.design.widget.AppBarLayout>

    <!-- Content -->

</android.support.design.widget.CoordinatorLayout>

Esto se proporciona en la publicación Click no funciona en RecyclerView en CoordinatorLayout cuando se desplaza .

Answer 3

Uno de tus ScrollViews enviará todos los eventos a la primera Vista que responda verdadera en dispatchMotionEvent.

Puede evitar el uso de dicho escenario en su aplicación O anular todos los métodos de dispatchMotionEvent (de desplazamientos y Vistas) para no consumir el ACTION_DOWN.

Answer 4

Yo tuve el mismo problema. Solo ocurre cuando la altura del contenido de NestedScrollView es menor que la altura de la pantalla del dispositivo. Entonces la solución es usar el setMinimumHeight(..) para la vista dentro de su NestedScrollView para hacer que NestedScrollView tamaño a la altura de la pantalla:

DisplayMetrics displaymetrics = new DisplayMetrics();
getBaseActivity().getWindowManager().getDefaultDisplay().getMetrics(displaymetrics);
int screenHeight = displaymetrics.heightPixels;

int actionBarHeight = 0;
TypedValue tv = new TypedValue();
if (getBaseActivity().getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true)) {
    actionBarHeight = TypedValue.complexToDimensionPixelSize(tv.data,getResources().getDisplayMetrics());
}

view.setMinimumHeight(screenHeight - actionBarHeight);

donde view es su RelativeLayout

Funciona bien para mí. Espero que te ayude