Question

一个小时后，感谢Tepis here，我在应用程序中安装了ToolBar。但是现在还有另一个“问题”，我不明白为什么看不到“图形视图”网格。我将向您显示结果：

这是我的xml主要活动：

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

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/topLayout"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:keepScreenOn="true"
    android:orientation="vertical">
    <android.support.design.widget.AppBarLayout
        android:id="@+id/app_bar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:theme="@style/AppTheme.AppBarOverlay">

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

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


    <com.google.android.gms.samples.vision.face.rPPG.ui.camera.CameraSourcePreview
        android:id="@+id/preview"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_below="@+id/app_bar"
        >



        <TextView
            android:id="@+id/textView"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentTop="true"
            android:gravity="center_vertical|center_horizontal"
            android:text="@string/no_faces_found"
            android:textStyle="bold"
            android:visibility="invisible" />
        <TextView
            android:id="@+id/info3"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_alignParentTop="true"
            android:gravity="center_vertical|center_horizontal"
            android:layout_weight="1"
            android:background="#00ffffff"
            android:text=""/>




        <com.google.android.gms.samples.vision.face.rPPG.ui.camera.GraphicOverlay
            android:id="@+id/faceOverlay"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />

    </com.google.android.gms.samples.vision.face.rPPG.ui.camera.CameraSourcePreview>


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="140dp"
        android:layout_alignParentBottom="true"
        android:layout_alignParentStart="true"
        android:background="#000000"
        android:orientation="vertical"
        android:paddingLeft="16dp"
        android:paddingRight="16dp">
        <com.jjoe64.graphview.GraphView
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:id="@+id/graph"/>


        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_alignParentTop="true"
            android:layout_weight="2"
            android:orientation="horizontal">


            <Button
                android:id="@+id/faces"
                android:layout_width="54dp"
                android:layout_height="match_parent"
                android:layout_alignParentStart="true"
                android:layout_margin="8dp"
                android:layout_weight="1"
                android:theme="@style/MyButton"
                style="@style/Widget.AppCompat.Button.Borderless"
                android:background="@drawable/bordismussati"
                android:text="@string/number_of_faces" />

            <Button
                android:id="@+id/distance"
                android:layout_width="53dp"
                android:layout_height="match_parent"
                android:layout_alignParentStart="true"
                android:layout_margin="8dp"
                android:layout_weight="1"
                android:theme="@style/MyButton"
                style="@style/Widget.AppCompat.Button.Borderless"
                android:background="@drawable/bordismussati"
                android:text="@string/distance" />

            <Button
                android:id="@+id/display"
                android:layout_width="7dp"
                android:layout_height="match_parent"
                android:layout_alignParentEnd="true"
                android:layout_alignParentRight="true"
                android:layout_alignTop="@+id/faces"
                android:layout_margin="8dp"
                android:layout_weight="2"
                android:theme="@style/MyButton"
                style="@style/Widget.AppCompat.Button.Borderless"
                android:background="@drawable/bordismussati"
                android:text="@string/display_info" />

        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:layout_alignParentTop="true"
            android:layout_weight="1"
            android:orientation="horizontal">

            <TextView
                android:id="@+id/info"
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_centerHorizontal="true"
                android:layout_margin="8dp"
                android:layout_weight="1"
                android:background="@drawable/bordismussati"
                android:gravity="center_vertical|center_horizontal"
                android:text="@string/_0" />

            <TextView
                android:id="@+id/info2"
                android:layout_width="0dp"
                android:layout_height="match_parent"
                android:layout_centerHorizontal="true"
                android:layout_margin="8dp"
                android:layout_weight="1"
                android:background="@drawable/bordismussati"
                android:gravity="center_vertical|center_horizontal"
                android:text="@string/no_faces_found" />




        </LinearLayout>


    </LinearLayout>



</RelativeLayout>

以及此处MainActivityrPPG.java文件中的图形视图：

 public void onCreate(Bundle icicle) {
        super.onCreate(icicle);
        setContentView(R.layout.main);
        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
        setSupportActionBar(toolbar);

    GraphView graph= (GraphView) findViewById(R.id.graph);
    series = new LineGraphSeries<>(new DataPoint[] {

    });
    graph.addSeries(series);

    // activate horizontal and vertical zooming and scrolling
    graph.getViewport().setScalableY(true);


    // set manual X bounds
    graph.getViewport().setXAxisBoundsManual(true);
    graph.getViewport().setMinX(0.5);
    graph.getViewport().setMaxX(100);

    DatiRealTime();
}


private void DatiRealTime() {
        mHandler.post(new Runnable() {
            @Override
            public void run() {

                LastXPoint++;
                series.appendData(new DataPoint(LastXPoint, plotRRG), false, 300);
                mHandler.postDelayed(this, 1000);
            }
        });
    }

我相信问题出在main_activity.xml文件中，但我找不到它在哪里。有人可以建议我在哪里冤wrong吗？预先感谢

工具栏更改Graph View的颜色-Android Studio

0 个答案: