Question

我最近在一项活动中尝试视差滚动，其中图像可绘制和所有文本作为意图传递，图像显示在工具栏上方，如视差。但视图完全迷失方向，尽管视差滚动正在发挥作用。我附上一些截图来说明问题。

我怀疑这可能是一个主题错误，但我无法摆脱它。请帮忙。

活动

package com.example.sayan.kennel;

import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.os.Bundle;
import android.support.design.widget.CollapsingToolbarLayout;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.support.v7.graphics.Palette;
import android.view.View;
import android.widget.ImageView;
import android.widget.TextView;

public class PetViewActivity extends AppCompatActivity {
    CollapsingToolbarLayout collapsingToolbarLayout;
    ImageView imageExtra;

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

        Intent intent=getIntent();
        String titleExtra=intent.getStringExtra("title");
        String detailExtra=intent.getStringExtra("details");
        TextView titleView= (TextView) findViewById(R.id.titleText);
        TextView detailView= (TextView) findViewById(R.id.detailsText);
        titleView.setText(titleExtra);
        detailView.setText(detailExtra);
        imageExtra= (ImageView) findViewById(R.id.image);
        imageExtra.setImageResource(intent.getIntExtra("image",0));

        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);
        getSupportActionBar().setHomeButtonEnabled(true);
        getSupportActionBar().setDisplayHomeAsUpEnabled(true);

        collapsingToolbarLayout= (CollapsingToolbarLayout) findViewById(R.id.collapsing_toolbar);
        collapsingToolbarLayout.setTitle(titleExtra);
        collapsingToolbarLayout.setExpandedTitleColor(getResources().getColor(android.R.color.transparent));
        setPalette();

        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
        fab.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Snackbar.make(view, "Just sad", Snackbar.LENGTH_LONG)
                        .setAction("Action", null).show();
            }
        });
    }
    private void setPalette(){
        Bitmap bitmap = ((BitmapDrawable) imageExtra.getDrawable()).getBitmap();
        Palette.from(bitmap).generate(new Palette.PaletteAsyncListener() {
            @Override
            public void onGenerated(Palette palette) {
                int primaryDark = getResources().getColor(R.color.colorPrimaryDark);
                int primary = getResources().getColor(R.color.colorPrimary);
                collapsingToolbarLayout.setContentScrimColor(palette.getMutedColor(primary));
                collapsingToolbarLayout.setStatusBarScrimColor(palette.getDarkVibrantColor(primaryDark));
            }
        });
    }

}

XML布局

<?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"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    tools:context="com.example.sayan.kennel.PetViewActivity">

    <android.support.design.widget.AppBarLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/appbar"
        android:theme="@style/AppTheme.AppBarOverlay">

        <android.support.design.widget.CollapsingToolbarLayout
            android:id="@+id/collapsing_toolbar"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:fitsSystemWindows="true"
            app:contentScrim="?attr/colorPrimary"
            app:expandedTitleMarginEnd="64dp"
            app:expandedTitleMarginStart="48dp"
            app:layout_scrollFlags="scroll|exitUntilCollapsed">

            <ImageView
                android:id="@+id/image"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:fitsSystemWindows="true"
                android:scaleType="centerCrop"
                android:src="@drawable/ani_cat_seven"
                app:layout_collapseMode="parallax" />

            <android.support.v7.widget.Toolbar
                android:id="@+id/toolbar"
                android:layout_width="match_parent"
                android:layout_height="?attr/actionBarSize"
                android:background="?attr/colorPrimary"
                app:popupTheme="@style/AppTheme.PopupOverlay" />
        </android.support.design.widget.CollapsingToolbarLayout>

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

    <android.support.v4.widget.NestedScrollView
        android:id="@+id/scroll"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:clipToPadding="false"
        app:layout_behavior="@string/appbar_scrolling_view_behavior">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">

        <TextView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="Dummy Text"
            android:id="@+id/titleText"
            android:textSize="42sp"
            android:layout_marginTop="16dp"/>
        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Dummy Text"
            android:id="@+id/detailsText"
            android:textSize="14sp"
            android:layout_marginTop="16dp"/>
        </LinearLayout>

    </android.support.v4.widget.NestedScrollView>

    <android.support.design.widget.FloatingActionButton
        android:id="@+id/fab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_margin="@dimen/fab_margin"
        android:clickable="true"
        android:src="@drawable/ic_stars_white_48dp"
        app:backgroundTint="@color/colorPrimaryDark"
        app:layout_anchor="@id/appbar"
        app:layout_anchorGravity="bottom|right|end" />

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

样式

<resources>>

    <style name="AppTheme.NoActionBar">
        <item name="windowActionBar">false</item>
        <item name="windowNoTitle">true</item>
        <item name="android:windowDrawsSystemBarBackgrounds">true</item>
        <item name="android:statusBarColor">@android:color/transparent</item>
    </style>

    <style name="Divider">
        <item name="android:layout_width">match_parent</item>
        <item name="android:layout_height">1dp</item>
        <item name="android:background">?android:attr/listDivider</item>
    </style>
</resources>

清单的那部分

<activity
            android:name=".PetViewActivity"
            android:label="@string/title_activity_pet_view"
            android:theme="@style/AppTheme.NoActionBar">
            <meta-data
                android:name="android.support.PARENT_ACTIVITY"
                android:value=".AdoptionActivity" />
        </activity>

材料设计视差滚动 - 视图完全迷失方向

0 个答案: