当键盘宕机时,某些布局不会绘制

Question

我正在使用一个应用程序,SurfaceView在用户定义的某些参数下绘制对象.我为应用程序创建了布局,其中包括页眉,页脚,输入(用户输入要绘制的参数)和自定义SurfaceView.

这是简化的布局:

<android.support.constraint.ConstraintLayout 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">

    <!-- Custom SurfaceView Layout -->

    <org.firengine.myapp.CustomPreview
        android:id="@+id/container_content"
        android:layout_width="0dp"
        android:layout_height="0dp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <!-- Header Layout: This is basically a Toolbar, with having a top padding of status bar height (see Note). -->

    <FrameLayout
        android:id="@+id/container_header"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:background="@color/colorTint"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">...</FrameLayout>

    <!-- Footer Layout - This is just a container, with having a bottom padding of navigation bar height (see Note). -->

    <FrameLayout
        android:id="@+id/container_footer"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:background="@color/colorTint"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent">...</FrameLayout>

    <!-- Input Layout - This is a empty container that shows views dynamically. -->

    <LinearLayout
        android:id="@+id/container_input"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:gravity="bottom|center_horizontal"
        android:orientation="vertical"
        app:layout_constraintBottom_toTopOf="@+id/container_footer"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/container_header" />

</android.support.constraint.ConstraintLayout>

输入布局基于参数生成动态视图.

假设我创建了一个EditText内部输入布局,以便在与之交互时出现键盘.

这是在键盘出现之前.

这是键盘显示的时候.请注意,应用程序布局已平移,标题布局不可见.

键盘宕机时会出现问题.标头布局(之前不可见)始终不可见(直到用户与应用程序交互).

我打开GPU透支来检查问题(也将SurfaceView背景颜色设置为白色),这是结果.

之前:

后:

此外,这是我的自定义SurfaceView类(我认为自定义SurfaceView阻止UI线程绘制消失的布局).

public class CustomPreview extends SurfaceView implements SurfaceHolder.Callback {

    private final Handler handler = new Handler();
    private final Runnable runnable = new Runnable() {
        @Override
        public void run() {
            draw();
        }
    };

    private Renderer renderer;

    private boolean visible;
    private boolean canLoadData;

    private HashMap<String, String> data;

    public CustomPreview(Context context, AttributeSet attrs) {
        super(context, attrs);
        getHolder().addCallback(this);
        getHolder().setFormat(PixelFormat.RGBA_8888);
        visible = false;
        canLoadData = false;
        renderer= new Renderer(context);
        data = new HashMap<>();
    }

    @Override
    public void surfaceCreated(SurfaceHolder holder) {
        visible = true;
        refreshHandler(0);
    }

    @Override
    public void surfaceChanged(SurfaceHolder holder, int format, int width, int height) {
        renderer.updateDimensions(width, height);
        canLoadData = true;
        renderer.updateData(data);
        refreshHandler(0);
    }

    @Override
    public void surfaceDestroyed(SurfaceHolder holder) {
        renderer.clearData();
        visible = false;
        canLoadData = false;
        refreshHandler(0);
    }

    public void setVisibility(boolean visible) {
        this.visible = visible;
        refreshHandler(0);
    }

    private void draw() {
        Canvas canvas = null;
        try {
            canvas = getHolder().lockCanvas();
            if (canvas != null) {
                renderer.draw(canvas);
            }
        } finally {
            if (canvas != null) {
                getHolder().unlockCanvasAndPost(canvas);
            }
        }
        refreshHandler(60000);
    }

    public void saveData(String key, String value) {
        data.put(key, value);
        if (canLoadData) {
            renderer.updateData(data);
        }
        refreshHandler(0);
    }

    private void refreshHandler(long delay) {
        handler.removeCallbacks(runnable);
        if (visible) {
            if (delay > 0) {
                handler.postDelayed(runnable, delay);
            } else {
                handler.post(runnable);
            }
        }
    }

    public String loadData(String key) {
        return data.get(key);
    }

难道我做错了什么？如果是这样,有人可以解释它是什么？

如果有人帮助我,我很高兴.谢谢.

注意:有关布局的一些额外信息.

1. 页脚布局最初有一个AdView,它不包含在布局中.
2. SYSTEM_UI_FLAG_HIDE_NAVIGATION和SYSTEM_UI_FLAG_FULLSCREEN标志被添加到活动中,因此,填充在各自的布局中设置,以避免重叠.
3. 并且,标题布局有2个工具栏视图,其中一个可以在上面的图像中看到.

Answer 1

尝试在清单中遵循以下内容

android：windowSoftInputMode =“调整Nothing”

<activity 
    android:name=".app.main.MainActivity"
    android:windowSoftInputMode="adjustNothing">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
</activity>