Android崩溃工具栏中的奇怪行为

Question

我已经熟悉了Android的材料设计，我正在尝试制作一个简单的项目，该项目实现了一个基于循环视图滚动的折叠工具栏。该项目只包含一个活动，其布局包含recclerView。我认为我做了必要的事情来正确地实现这个动画。问题是当滚动时，状态栏的背景（较浓的颜色）消失，工具栏与状态栏重叠，而不是完全隐藏。我会添加图片和代码给你一个想法。提前谢谢，我会感谢你的帮助。

折叠前的工具栏

折叠后的工具栏

这是MainActivity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"
    android:id="@+id/coordinator"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true">

    <android.support.v7.widget.RecyclerView
        android:id="@+id/rvComments"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:background="#333333"
        android:scrollbars="vertical"
        app:layout_behavior="@string/appbar_scrolling_view_behavior" />
    <android.support.design.widget.AppBarLayout
        android:layout_height="wrap_content"
        android:layout_width="match_parent"
        android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">
        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?attr/actionBarSize"
            android:background="?attr/colorPrimary"
            app:layout_scrollFlags="scroll|enterAlways"
            app:popupTheme="@style/ThemeOverlay.AppCompat.Dark.ActionBar"/>
    </android.support.design.widget.AppBarLayout>
    <android.support.design.widget.FloatingActionButton
        android:id="@+id/fab"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|end"
        android:layout_margin="@dimen/fab_margin"
        android:src="@android:drawable/ic_dialog_email"/>
</android.support.design.widget.CoordinatorLayout>

这是build.gradle文件，我在其中添加了依赖项

apply plugin: 'com.android.application'
android {
    compileSdkVersion 23
    buildToolsVersion "23.0.2"
    defaultConfig {
       applicationId "com.example.francisco.recycler"
       minSdkVersion 19
       targetSdkVersion 23
       versionCode 1
       versionName "1.0"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android.txt'),           'proguard-rules.pro'
        }
    }
}
dependencies {
    compile fileTree(dir: 'libs', include: ['*.jar'])
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.1.0'
    compile 'com.android.support:design:23.1.0'
    compile 'com.android.support:recyclerview-v7:23.1.0'
}

最后，如果需要MainActivity.java

public class MainActivity extends AppCompatActivity {
private RecyclerView  rvComments;
private List<Comentario> commentsList;
private CommentsAdapter adapter;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    rvComments = (RecyclerView) findViewById(R.id.rvComments);
    setSupportActionBar(toolbar);
    // Data Arraylist
    commentsList = new ArrayList<>();
    commentsList.add(new Comentario(1, 1, 1, "Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. ", null, "Name", "LastName", " ", "Telematics Engineer", null));
    commentsList.add(new Comentario(1, 1, 1, "Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. ", null, "Name", "LastName", " ", "Telematics Engineer", null));
    commentsList.add(new Comentario(1, 1, 1, "Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. ", null, "Name", "LastName", " ", "Telematics Engineer", null));
    commentsList.add(new Comentario(1, 1, 1, "Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. ", null, "Name", "LastName", " ", "Telematics Engineer", null));
    commentsList.add(new Comentario(1, 1, 1, "Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. ", null, "Name", "LastName", " ", "Telematics Engineer", null));
    commentsList.add(new Comentario(1, 1, 1, "Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. ", null, "Name", "LastName", " ", "Telematics Engineer", null));
    commentsList.add(new Comentario(1, 1, 1, "Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. ", null, "Name", "LastName", " ", "Telematics Engineer", null));

    // Setting the adapter
    adapter = new CommentsAdapter(this, commentsList);
    rvComments.setAdapter(adapter);
    rvComments.setLayoutManager(new LinearLayoutManager(this, LinearLayoutManager.VERTICAL, false));

    FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
    fab.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
                    .setAction("Action", null).show();
        }
    });
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.menu_main, menu);
    return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();
    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) {
        return true;
    }
    return super.onOptionsItemSelected(item);
}
}

我从网上下载了一个具有这种效果的项目，它运行良好，但我看不出我的项目有什么问题。

Answer 1

尝试添加

android:fitsSystemWindows="true"

在AppBar和工具栏中