java - Android:屏幕顶部带有标题栏间距的空白区域

Question

我遇到了一个令人恼火的错误，该错误将我的所有布局移动标题栏的间距，而标题栏却不在那里。在模拟器“Profile: Nexus 5x”中运行时有这个空间，但在我的 Oneplus 3 上看起来很正常。

我尝试通过将其视为标题栏来删除它，但我怀疑它可能是其他东西。

就像我所有布局中的某种通用填充一样。我对此很困惑。

编辑xml时在“设计”窗口中也可以看到。

编辑编辑编辑===========================================编辑编辑编辑

我发现使用 roughhike BottomBar 库并尝试显示超过 3 个图标时，由于某种原因会在屏幕顶部出现额外的空间。使用 native 设计库“BottomNavigationView”后，我没有遇到任何问题。

编辑编辑编辑===========================================编辑编辑编辑

知道什么可以作为倾斜栏的间距，但不是标题栏吗？

Android list .xml:

<application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="false">
        <activity
            android:name=".MainActivity"
            android:theme="@style/AppTheme.NoActionBar">

Style.xml:

<style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">

            <item name="colorPrimary">@color/colorPrimary</item>
            <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
            <item name="colorAccent">@color/colorAccent</item>
            <item name="windowActionBar">false</item>
            <item name="windowNoTitle">true</item>


        </style>

        <style name="AppTheme.NoActionBar">
            <item name="android:windowActionBar">false</item>
            <item name="android:windowNoTitle">true</item>

        </style>

Activity_main.xml:

<?xml version="1.0" encoding="utf-8"?>

<FrameLayout 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/content_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent">


        <com.roughike.bottombar.BottomBar
            android:id="@+id/bottomBar"
            android:layout_width="match_parent"
            android:layout_height="60dp"
            android:layout_alignParentBottom="true" />

</FrameLayout>

content_main:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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/content_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="com.example.razze.roomee.MainActivity"
tools:showIn="@layout/app_bar_main">

</RelativeLayout>

MainActivity.java:

package com.example.razze.roomee;


public class MainActivity extends AppCompatActivity {


    private static Context mContext;
    private static Point windowsSize;
    private FragmentManager fragmentManager;
    BottomBar bottomBar;

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        requestWindowFeature(Window.FEATURE_NO_TITLE); //before
        setContentView(R.layout.activity_main);

        // HomeActivity uses these
        mContext = getApplicationContext();
        windowsSize = Utility.getDisplaySize(getWindowManager());

        // Declares bottomBar and it's items
        bottomBar = (BottomBar) findViewById(R.id.bottomBar);
        bottomBar = BottomBar.attach(this, savedInstanceState);
        bottomBar.setItems(R.menu.bottombar_menu);
        bottomBar.setDefaultTabPosition(2);

        // BottomBar OnClickListener
        bottomBar.setOnMenuTabClickListener(new OnMenuTabClickListener() {


            @Override
            public void onMenuTabSelected(@IdRes int menuItemId) {

                fragmentManager = getFragmentManager();

                System.out.println("Menu selected: " + menuItemId);

                switch (menuItemId){

                    case R.id.preferences:

                        fragmentManager.beginTransaction()
                                 .replace(R.id.content_main,
                                            new PreferencesActivity())
                                 .commit();
                        break;

                    case R.id.matches:

                            fragmentManager.beginTransaction()
                                    .replace(R.id.content_main,
                                            new MatchesActivity())
                                    .commit();
                        break;

                    case R.id.settings:

                        fragmentManager.beginTransaction()
                                 .replace(R.id.content_main,
                                            new SettingsActivity())
                                 .commit();
                        break;

                    case R.id.home:

                            fragmentManager.beginTransaction()
                                    .replace(R.id.content_main,
                                            new HomeActivity())
                                    .commit();
                        break;

                    case R.id.message:

                           fragmentManager.beginTransaction()
                                   .replace(R.id.content_main,
                                           new MessageActivity())
                                   .commit();
                        break;
                }

            }

            // When an icon in BottomBar that is selected, gets selected.
            @Override
            public void onMenuTabReSelected(@IdRes int menuItemId) {     }

        });

      // Colors the bottombar (DOESNT WORK FOR SOME REASON
      //bottomBar.mapColorForTab(0, "#FF9800");
      //bottomBar.mapColorForTab(1, "#FF5252");
      //bottomBar.mapColorForTab(2, "#7B1FA2");
      //bottomBar.mapColorForTab(3, "#FFF352");
      //bottomBar.mapColorForTab(4, "#455FA2");


    }

    // HomeActivity uses these
    public static Context getMainContext(){ return mContext; }

    public static Point getWindowSize(){ return windowsSize; }



}

提前感谢您的帮助，我们将不胜感激。

Answer 1

修改content_main:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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/content_main"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 app:layout_behavior="@string/appbar_scrolling_view_behavior"
 tools:context="com.example.razze.roomee.MainActivity"
 tools:showIn="@layout/app_bar_main">

</RelativeLayout>