Question

我正在关注此示例“http://antonioleiva.com/collapsing-toolbar-layout/”。我想要一个随着视差效果向上移动的图像。但是当我运行我的应用程序时，没有任何显示。我得到一个空白的白色屏幕。任何帮助？

XML：

var

活动代码

<?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:fitsSystemWindows="true">


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

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

            <ImageView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                app:layout_collapseMode="parallax"
                android:src="@drawable/image"
                />

        </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">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="HELLO"
            />

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


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

清单：

public class MyActivity extends AppCompatActivity {


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


    }
}

风格：

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.app">

    <uses-permission android:name="android.permission.INTERNET" />


    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />



    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>



        <activity android:name=".Vendor">
            <intent-filter>
                <action android:name="android.intent.action.vendor" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>





        <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    </application>
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
</manifest>

Android折叠工具栏未显示

0 个答案: