windowSoftInputMode =＆＃34; adjustResize＆＃34;不使用半透明动作/导航栏

时间：2014-01-13 13:49:53

标签： android resize statusbar android-4.4-kitkat window-soft-input-mode

新Android KitKat（4.4）和windowSoftInputMode="adjustResize"中的半透明操作栏/导航栏出现问题。

Normaly将InputMode更改为adjustResize，应用程序应该在显示键盘时自行调整大小......但是这里不会！如果删除透明效果的行，则调整大小正常。

因此，如果键盘可见，我的ListView就在它下面，我无法访问最后几个项目。 （只能手动隐藏键盘）

的AndroidManifest.xml 

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="XYZ"
android:versionCode="23"
android:versionName="0.1" >

<uses-sdk
    android:minSdkVersion="9"
    android:targetSdkVersion="19" />

<application
    android:allowBackup="true"
    android:icon="@drawable/ic_launcher"
    android:label="@string/app_name"
    android:theme="@style/Theme.XYZStyle" >
    <activity
        android:name="XYZ"
        android:label="@string/app_name"
        android:windowSoftInputMode="adjustResize" >
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

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

</manifest>

值-V19 / styles.xml 

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

<style name="Theme.XYZStyle" parent="@style/Theme.AppCompat.Light">
    <item name="android:windowTranslucentStatus">true</item>
    <item name="android:windowTranslucentNavigation">true</item>
</style>

</resources>

fragment.xml之

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" >

<ListView
    android:id="@+id/listView_contacts"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:clipToPadding="false"
    android:divider="@null"
    android:dividerHeight="0dp"
    android:drawSelectorOnTop="true"
    android:fastScrollAlwaysVisible="true"
    android:fastScrollEnabled="true"
    android:paddingBottom="@dimen/navigationbar__height" >
</ListView>

</RelativeLayout>

有任何解决此问题的想法吗？

16 个答案:

答案 0 :(得分：157)

您缺少以下属性：

android:fitsSystemWindows="true"

在片段 .xml布局的根RelativeLayout中。

<强>更新

去年Chris Bane发表了一篇有趣的演讲，详细解释了这是如何运作的：

https://www.youtube.com/watch?v=_mGDMVRO3iE

答案 1 :(得分：32)

有相关的错误报告here。我找到了一种解决方法，从有限的测试来看，似乎没有任何影响。使用下面的逻辑添加根ViewGroup的自定义实现（我几乎总是使用FrameLayout，这是我测试过的）。然后，使用此自定义布局代替根布局，并确保设置android:fitsSystemWindows="true"。然后，您可以在布局后随时调用getInsets()（例如，添加OnPreDrawListener）以调整布局的其余部分，以便根据需要考虑系统插入内容。

import android.content.Context;
import android.graphics.Rect;
import android.os.Build;
import android.util.AttributeSet;
import android.widget.FrameLayout;
import org.jetbrains.annotations.NotNull;

/**
 * @author Kevin
 *         Date Created: 3/7/14
 *
 * https://code.google.com/p/android/issues/detail?id=63777
 * 
 * When using a translucent status bar on API 19+, the window will not
 * resize to make room for input methods (i.e.
 * {@link android.view.WindowManager.LayoutParams#SOFT_INPUT_ADJUST_RESIZE} and
 * {@link android.view.WindowManager.LayoutParams#SOFT_INPUT_ADJUST_PAN} are
 * ignored).
 * 
 * To work around this; override {@link #fitSystemWindows(android.graphics.Rect)},
 * capture and override the system insets, and then call through to FrameLayout's
 * implementation.
 * 
 * For reasons yet unknown, modifying the bottom inset causes this workaround to
 * fail. Modifying the top, left, and right insets works as expected.
 */
public final class CustomInsetsFrameLayout extends FrameLayout {
    private int[] mInsets = new int[4];

    public CustomInsetsFrameLayout(Context context) {
        super(context);
    }

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

    public CustomInsetsFrameLayout(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    public final int[] getInsets() {
        return mInsets;
    }

    @Override
    protected final boolean fitSystemWindows(@NotNull Rect insets) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            // Intentionally do not modify the bottom inset. For some reason, 
            // if the bottom inset is modified, window resizing stops working.
            // TODO: Figure out why.

            mInsets[0] = insets.left;
            mInsets[1] = insets.top;
            mInsets[2] = insets.right;

            insets.left = 0;
            insets.top = 0;
            insets.right = 0;
        }

        return super.fitSystemWindows(insets);
    }
}

由于fitSystemWindow已被弃用，请参阅以下答案以完成解决方法。

答案 2 :(得分：25)

@kcoppock回答非常有帮助，但是fitSystemWindows在API级别20中被弃用

因此，自API 20（KITKAT_WATCH）以来，您应该覆盖onApplyWindowInsets 

@Override
public final WindowInsets onApplyWindowInsets(WindowInsets insets) {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT_WATCH) {
        return super.onApplyWindowInsets(insets.replaceSystemWindowInsets(0, 0, 0,
                insets.getSystemWindowInsetBottom()));
    } else {
        return insets;
    }
}

答案 3 :(得分：10)

这对我来说在片段中有半透明状态栏和adjustResize：

  1. 将自定义RelativeLayout设为@ Victor91，@ kcoppock说。

  2. 使用CustomRelativeLayout作为片段的父布局。

  3. 使用android声明主题：windowTranslucentStatus = true

  4. 必须在Manifest中声明容器Activity android：windowSoftInputMode =“adjustResize”并使用声明的 主题

  5. 请在片段根布局上使用fitsSystemWindows！ 

    public class CustomRelativeLayout extends RelativeLayout {

    private int[] mInsets = new int[4];

    public CustomRelativeLayout(Context context) {
        super(context);
    }

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

    public CustomRelativeLayout(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    public CustomRelativeLayout(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        super(context, attrs, defStyleAttr, defStyleRes);
    }

    @Override
    public final WindowInsets onApplyWindowInsets(WindowInsets insets) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT_WATCH) {
            mInsets[0] = insets.getSystemWindowInsetLeft();
            mInsets[1] = insets.getSystemWindowInsetTop();
            mInsets[2] = insets.getSystemWindowInsetRight();
            return super.onApplyWindowInsets(insets.replaceSystemWindowInsets(0, 0, 0,
                    insets.getSystemWindowInsetBottom()));
        } else {
            return insets;
        }
    }
}

    6. 然后在xml中，

    <com.blah.blah.CustomRelativeLayout 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">
</com.blah.blah.CustomRelativeLayout>

答案 4 :(得分：5)

我有同样的问题， 我的Activity有一个ScrollView作为根视图，并且激活了半透明状态栏，当键盘显示时，它没有正确调整大小...并且显然屏幕没有滚动隐藏输入视图。

解决方案： 将所有内容（布局和活动逻辑）移动到新片段中。 然后将Activity更改为仅包含此Fragment。现在一切都按预期工作了！

这是活动的布局：

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

    android:id="@+id/contentView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true" />

答案 5 :(得分：5)

如果您要自定义插图，并且您的目标是API级别＆gt; = 21，则无需创建自定义视图组即可完成此操作。只需设置fitsSystemWindows默认情况下，填充将应用于容器视图，您可能不需要。

版本检查内置于此方法中，只有设备＆gt; = 21才能执行lambda内的代码。科特林的例子：

ViewCompat.setOnApplyWindowInsetsListener(container) { view, insets ->
  insets.replaceSystemWindowInsets(0, 0, 0, insets.systemWindowInsetBottom).apply {
    ViewCompat.onApplyWindowInsets(view, this)
  }
}

确保您的布局仍设置fitsSystemWindows标志，否则将不会调用窗口insets侦听器。 

<FrameLayout
    android:id="@+id/container"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:fitsSystemWindows="true"
    />

这些来源很有帮助：

https://medium.com/google-developers/why-would-i-want-to-fitssystemwindows-4e26d9ce1eec https://medium.com/@azizbekian/windowinsets-24e241d4afb9

答案 6 :(得分：2)

基于Joseph Johnson在Android How to adjust layout in Full Screen Mode when softkeyboard is visible

中的解决方法

在您的活动中onCreate()之后在setContentView()中调用此内容。

AndroidBug5497Workaround.assistActivity(this);

与return (r.bottom - r.top);

中的return r.bottom;替换computeUsableHeight()的原始版本不同

出于某种原因，我必须将我的活动fitsSystemWindows属性设置为false。

这个解决方法救了我。它适用于我。希望可以帮到你。

实现类是：

public class AndroidBug5497Workaround {

// For more information, see https://code.google.com/p/android/issues/detail?id=5497
// To use this class, simply invoke assistActivity() on an Activity that already has its content view set.

public static void assistActivity (Activity activity) {
    new AndroidBug5497Workaround(activity);
}

private View mChildOfContent;
private int usableHeightPrevious;
private FrameLayout.LayoutParams frameLayoutParams;

private AndroidBug5497Workaround(Activity activity) {
    FrameLayout content = (FrameLayout) activity.findViewById(android.R.id.content);
    mChildOfContent = content.getChildAt(0);
    mChildOfContent.getViewTreeObserver().addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
        public void onGlobalLayout() {
            possiblyResizeChildOfContent();
        }
    });
    frameLayoutParams = (FrameLayout.LayoutParams) mChildOfContent.getLayoutParams();
}

private void possiblyResizeChildOfContent() {
    int usableHeightNow = computeUsableHeight();
    if (usableHeightNow != usableHeightPrevious) {
        int usableHeightSansKeyboard = mChildOfContent.getRootView().getHeight();
        int heightDifference = usableHeightSansKeyboard - usableHeightNow;
        if (heightDifference > (usableHeightSansKeyboard/4)) {
            // keyboard probably just became visible
            frameLayoutParams.height = usableHeightSansKeyboard - heightDifference;
        } else {
            // keyboard probably just became hidden
            frameLayoutParams.height = usableHeightSansKeyboard;
        }
        mChildOfContent.requestLayout();
        usableHeightPrevious = usableHeightNow;
    }
}

private int computeUsableHeight() {
    Rect r = new Rect();
    mChildOfContent.getWindowVisibleDisplayFrame(r);
    return r.bottom;
}

}

答案 7 :(得分：1)

由replaceSystemWindowInsets和systemWindowInsetBottom方法弃用引起的有用的 @Victor Rendina answer的小更新。

先决条件：

  • API > = 21
  • implementation 'androidx.core:core-ktx:1.5.0-alpha02'至少

Kotlin扩展名： 

fun View?.fitSystemWindowsAndAdjustResize() = this?.let { view ->
    ViewCompat.setOnApplyWindowInsetsListener(view) { v, insets ->
        view.fitsSystemWindows = true
        val bottom = insets.getInsets(WindowInsetsCompat.Type.ime()).bottom

        WindowInsetsCompat
            .Builder()
            .setInsets(
                WindowInsetsCompat.Type.systemBars(),
                Insets.of(0, 0, 0, bottom)
            )
            .build()
            .apply {
                ViewCompat.onApplyWindowInsets(v, this)
            }
    }
}

用法： 

rootView.fitSystemWindowsAndAdjustResize()

其中rootView实际上是布局的根视图：）

注意： 如果扩展名不适用于您的根视图（将ConstraintLayout作为rootView时遇到了这种情况），请使用FrameLayout以便FrameLayout成为新的根视图。

答案 8 :(得分：0)

AndroidBug5497Workaround.java注意内存泄漏。需要以下代码

getViewTreeObserver().removeOnGlobalLayoutListener(listener);

我的示例使用RxJava，它在Activity的生命周期中的onPause（）时自动调用removeOnGlobalLayoutListener（）

public class MyActivity extends RxAppCompatActivity {
    // ...

protected void onStart(){
    super.onStart();

        TRSoftKeyboardVisibility
            .changes(this) // activity
            .compose(this.<TRSoftKeyboardVisibility.ChangeEvent>bindUntilEvent(ActivityEvent.PAUSE))
            .subscribe(keyboardEvent -> {
                FrameLayout content = (FrameLayout) findViewById(android.R.id.content);
                View firstChildView = content.getChildAt(0);
                firstChildView.getLayoutParams().height = keyboardEvent.viewHeight();
                firstChildView.requestLayout();

                // keyboardEvent.isVisible      = keyboard visible or not
                // keyboardEvent.keyboardHeight = keyboard height
                // keyboardEvent.viewHeight     = fullWindowHeight - keyboardHeight
            });
   //...
}





package commonlib.rxjava.keyboard;

import android.app.Activity;
import android.view.View;
import android.widget.FrameLayout;
import kr.ohlab.android.util.Assert;
import rx.Observable;

public class TRSoftKeyboardVisibility {

    public static Observable<ChangeEvent> changes(Activity activity) {
        Assert.notNull(activity, "activity == null");
        FrameLayout content = (FrameLayout) activity.findViewById(android.R.id.content);
        View childOfContent = content.getChildAt(0);
        return Observable.create(
            new TRSoftKeyboardVisibilityEventOnSubscribe(childOfContent));
    }

    public static final class ChangeEvent {
        private final int keyboardHeight;
        private final boolean visible;
        private final int viewHeight;

        public static ChangeEvent create(boolean visible, int keyboardHeight,
            int windowDisplayHeight) {
            return new ChangeEvent(visible, keyboardHeight, windowDisplayHeight);
        }

        private ChangeEvent(boolean visible, int keyboardHeight, int viewHeight) {
            this.keyboardHeight = keyboardHeight;
            this.visible = visible;
            this.viewHeight = viewHeight;
        }

        public int keyboardHeight() {
            return keyboardHeight;
        }

        public boolean isVisible() {
            return this.visible;
        }

        public int viewHeight() {
            return viewHeight;
        }

        @Override
        public boolean equals(Object o) {
            if (this == o) return true;
            if (!(o instanceof ChangeEvent)) return false;

            ChangeEvent that = (ChangeEvent) o;

            if (keyboardHeight != that.keyboardHeight) return false;
            if (visible != that.visible) return false;
            return viewHeight == that.viewHeight;
        }

        @Override
        public int hashCode() {
            int result = keyboardHeight;
            result = 31 * result + (visible ? 1 : 0);
            result = 31 * result + viewHeight;
            return result;
        }

        @Override
        public String toString() {
            return "ChangeEvent{" +
                "keyboardHeight=" + keyboardHeight +
                ", visible=" + visible +
                ", viewHeight=" + viewHeight +
                '}';
        }
    }
}


package commonlib.rxjava.keyboard;

import android.graphics.Rect;
import android.view.View;
import android.view.ViewTreeObserver;
import kr.ohlab.android.util.Assert;
import rx.Observable;
import rx.Subscriber;
import rx.android.MainThreadSubscription;
import timber.log.Timber;

public class TRSoftKeyboardVisibilityEventOnSubscribe
    implements Observable.OnSubscribe<TRSoftKeyboardVisibility.ChangeEvent> {
    private final View mTopView;
    private int mLastVisibleDecorViewHeight;
    private final Rect mWindowVisibleDisplayFrame = new Rect();

    public TRSoftKeyboardVisibilityEventOnSubscribe(View topView) {
        mTopView = topView;
    }

    private int computeWindowFrameHeight() {
        mTopView.getWindowVisibleDisplayFrame(mWindowVisibleDisplayFrame);
        return (mWindowVisibleDisplayFrame.bottom - mWindowVisibleDisplayFrame.top);
    }

    private TRSoftKeyboardVisibility.ChangeEvent checkKeyboardVisibility() {
        int windowFrameHeightNow = computeWindowFrameHeight();
        TRSoftKeyboardVisibility.ChangeEvent event = null;
        if (windowFrameHeightNow != mLastVisibleDecorViewHeight) {
            int mTopViewHeight = mTopView.getHeight();
            int heightDiff = mTopViewHeight - windowFrameHeightNow;
            Timber.e("XXX heightDiff=" + heightDiff);
            if (heightDiff > (mTopViewHeight / 4)) {
                event = TRSoftKeyboardVisibility.ChangeEvent.create(true, heightDiff, windowFrameHeightNow);
            } else {
                event = TRSoftKeyboardVisibility.ChangeEvent.create(false, 0, windowFrameHeightNow);
            }
            mLastVisibleDecorViewHeight = windowFrameHeightNow;
            return event;
        }

        return null;
    }

    public void call(final Subscriber<? super TRSoftKeyboardVisibility.ChangeEvent> subscriber) {
        Assert.checkUiThread();

        final ViewTreeObserver.OnGlobalLayoutListener listener =
            new ViewTreeObserver.OnGlobalLayoutListener() {
                @Override
                public void onGlobalLayout() {
                    TRSoftKeyboardVisibility.ChangeEvent event = checkKeyboardVisibility();
                    if( event == null)
                        return;
                    if (!subscriber.isUnsubscribed()) {
                        subscriber.onNext(event);
                    }
                }
            };

        mTopView.getViewTreeObserver().addOnGlobalLayoutListener(listener);

        subscriber.add(new MainThreadSubscription() {
            @Override
            protected void onUnsubscribe() {
                mTopView.getViewTreeObserver().removeOnGlobalLayoutListener(listener);
            }
        });
    }
}

答案 9 :(得分：0)

我有一个问题。

我将windowDrawsSystemBarBackgrounds设置为'true'，我的应用程序应显示在状态栏下。

这是我的活动主题。

<item name="android:windowTranslucentStatus" tools:targetApi="KITKAT">false</item>
<item name="android:windowDrawsSystemBarBackgrounds">true</item>
<item name="android:windowTranslucentNavigation">true</item>
<item name="android:statusBarColor">@android:color/transparent</item>

我从jianshu's blog得到了帮助。 你可以阅读代码，但像我这样的文字。 我添加了更多代码。 

public final class ZeroInsetsFrameLayout extends FrameLayout {
    private int[] mInsets = new int[4];

    public ZeroInsetsFrameLayout(Context context) {
        super(context);
    }

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

    public ZeroInsetsFrameLayout(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);
    }

    public final int[] getInsets() {
        return mInsets;
    }

    @Override
    public WindowInsets computeSystemWindowInsets(WindowInsets in, Rect outLocalInsets) {
        outLocalInsets.left = 0;
        outLocalInsets.top = 0;
        outLocalInsets.right = 0;

        return super.computeSystemWindowInsets(in, outLocalInsets);
    }

    @Override
    protected final boolean fitSystemWindows(@NonNull Rect insets) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            // Intentionally do not modify the bottom inset. For some reason,
            // if the bottom inset is modified, window resizing stops working.
            // TODO: Figure out why.

            mInsets[0] = insets.left;
            mInsets[1] = insets.top;
            mInsets[2] = insets.right;

            insets.left = 0;
            insets.top = 0;
            insets.right = 0;
        }

        return super.fitSystemWindows(insets);
    }
}

这是我的片段布局。

<com.dhna.widget.ZeroInsetsFrameLayout 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"
    android:background="@color/white">

    <!-- your xml code -->

</ZeroInsetsFrameLayout>

我希望它对你有所帮助。 祝你好运！

答案 10 :(得分：0)

最佳做法是允许用户在显示键盘时滚动内容。 因此，要添加此功能，您需要将根布局放在class Component { constructor(name, templateUrl, bindings, controllerAs) { app.component(name, { templateUrl: templateUrl, bindings: bindings, controllerAs: controllerAs, controller: this.controller }); } controller() { console.log("Inside Component controller"); } } class ListNames extends Component { constructor() { super("listNames", "ListNames.html", { names: '<' }, "lstNames"); } onInit() { console.log("onInit called"); } // overrided method controller() { console.log("ListNames controller()"); /*this.$onInit = function () { console.log("onInit called"); }*/ this.$onInit = this.onInit; // <-- this doesn't work but the above does } } lstNames = new ListNames(); 内并使用ScrollView活动方法。

但是，如果您想在Android 5上使用此功能windowSoftInputMode="adjustResize"，则内容将无法滚动，并且会与键盘重叠。

要解决此问题，请检查此answer

答案 11 :(得分：0)

不应该使用半透明状态栏;该设置强制窗口进入全屏模式，该模式不适用于adjustResize。

您可以使用adjustPan或使用fitsSystemWindows属性。我建议阅读有关该功能，但它有很多副作用：

https://medium.com/google-developers/why-would-i-want-to-fitssystemwindows-4e26d9ce1eec

答案 12 :(得分：0)

  • 在我研究过所有论坛之后。 thoese方式不禁发现指出。幸运的是，当我尝试这样做。它帮我解决了问题
  

XML 

<RelativeLayout 
      xmlns:android="http://schemas.android.com/apk/res/android"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      android:fitsSystemWindows="true">
       <!-- Your xml -->
    </RelativeLayout>
  

活动

@Override
protected void onCreate(Bundle savedInstanceState) {
   super.onCreate(savedInstanceState);
   setContentView("Your Activity");
   setAdjustScreen();

}
  

创建Func 

protected void setAdjustScreen(){
        getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
        getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN);
        /*android:windowSoftInputMode="adjustPan|adjustResize"*/
}
  

最后在你的mainifest中加入一些行

 <activity
     android:name="Your Activity"
     android:windowSoftInputMode="adjustPan|adjustResize"
     android:screenOrientation="portrait"></activity>

答案 13 :(得分：0)

我有同样的问题。我已经解决了使用coordinatorlayout

activity.main.xml 

[[6.723362,...]

content_main2.xml 

var pool = mysql.createPool({
    connectionLimit: 150,
    host: 'localhost',
    user: 'dbuser',
    password: 'dbpwd',
    database: 'dbname'
});

MainActivity.java

现在添加此行linearLayoutManager.setStackFromEnd（true）; 

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


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

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

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

    <include layout="@layout/content_main2"/>

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

答案 14 :(得分：0)

<androidx.constraintlayout.widget.ConstraintLayout
  android:fitsSystemWindows="true">

  <androidx.coordinatorlayout.widget.CoordinatorLayout>
    <com.google.android.material.appbar.AppBarLayout>

      <com.google.android.material.appbar.CollapsingToolbarLayout/>

    </com.google.android.material.appbar.AppBarLayout>

    <androidx.core.widget.NestedScrollView>
    <Editext/>
    <androidx.core.widget.NestedScrollView/>

  </androidx.coordinatorlayout.widget.CoordinatorLayout>

</androidx.constraintlayout.widget.ConstraintLayout>

答案 15 :(得分：0)

首先在您的根目录布局中添加它。

<PackageReference Include="Microsoft.AspNetCore.App" Version="2.2.5" />

使用这种方法时，确保应用程序UI的关键部分（例如，Maps应用程序中的内置控件）不会被系统栏覆盖是您的责任。这可能会使您的应用无法使用。在大多数情况下，您可以通过将android：fitsSystemWindows属性添加到XML布局文件（设置为true）来处理此问题。这将调整父ViewGroup的填充以为系统窗口留出空间。这对于大多数应用程序来说已经足够。

但是，在某些情况下，您可能需要修改默认填充以获取所需的应用布局。要直接操纵内容相对于系统栏的布局方式（系统栏占据着一个窗口的“内容插图”），请覆盖fitSystemWindows（Rect插图）。当窗口的内容插入发生更改时，视图层次结构将调用fitSystemWindows（）方法，以允许窗口相应地调整其内容。通过覆盖此方法，您可以根据需要处理插图（以及应用程序的布局）。

https://developer.android.com/training/system-ui/status#behind

如果您想成为主窗口装配工，请观看android开发人员的视频。 https://www.youtube.com/watch?v=_mGDMVRO3iE

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