java – 即使我使用正确的尺寸(hdpi,mdpi,xxhdpi ……),选项卡上

我使用TabHost创建了我的标签,如下所示：

TabHost tabHost = (TabHost) findViewById(R.id.tabHost);
    tabHost.setup();

    TabHost.TabSpec spec1 = tabHost.newTabSpec("tab1");
    spec1.setContent(R.id.tab1);
    spec1.setIndicator("",getResources().getDrawable(R.drawable.homeicon));
    TabHost.TabSpec spec2 = tabHost.newTabSpec("tab2");
    spec2.setContent(R.id.tab2);
    spec2.setIndicator("",getResources().getDrawable(R.drawable.startachainwhite48dp));
    TabHost.TabSpec spec3 = tabHost.newTabSpec("tab3");
    spec3.setContent(R.id.tab3);
    spec3.setIndicator("",getResources().getDrawable(R.drawable.joinachainwhite48dp));
    TabHost.TabSpec spec4 = tabHost.newTabSpec("tab4");
    spec4.setContent(R.id.tab4);
    spec4.setIndicator("",getResources().getDrawable(R.drawable.viewchainswhite48dp));
    TabHost.TabSpec spec5 = tabHost.newTabSpec("tab5");
    spec5.setContent(R.id.tab5);
    spec5.setIndicator("",getResources().getDrawable(R.drawable.profilewhite48dp));

    tabHost.addTab(spec1);
    tabHost.addTab(spec2);
    tabHost.addTab(spec3);
    tabHost.addTab(spec4);
    tabHost.addTab(spec5);

但由于某种原因,我的标签上的图标(在底部)显示很小

有没有人对此有解释/解决方案？我觉得我在某处犯了一个愚蠢的错误 – 如果需要,会发布xml布局.提前致谢.

编辑：可能值得一提的是,我在上面的代码中使用的getDrawable()方法已被弃用(API 22)

EDIT2：完整的XML布局

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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:orientation="vertical">


<android.support.v7.widget.Toolbar xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/tool_bar_test"
    android:layout_width="match_parent"
    android:layout_height="50dp"
    android:background="#FF86B39A"
    android:fitsSystemWindows="true"
    android:gravity="top"
    app:contentInsetLeft="0dp"
    app:contentInsetStart="0dp">


    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="horizontal">

        <TextView
            android:id="@+id/title"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="center_vertical"
            android:gravity="center"
            android:text="Test"
            android:textColor="#ffffff"
            android:textSize="25sp"
            android:textStyle="bold" />
    </LinearLayout>
</android.support.v7.widget.Toolbar>

<android.support.v4.widget.DrawerLayout xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/nav_drawer"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <RelativeLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        tools:context="com.example.sv_laptop03.myapp.Profile">

        <TabHost
            android:id="@+id/tabHost"
            android:layout_width="match_parent"
            android:layout_height="match_parent">

            <RelativeLayout
                android:layout_width="match_parent"
                android:layout_height="match_parent">

                <TabWidget
                    android:id="@android:id/tabs"
                    android:layout_width="match_parent"
                    android:layout_height="60dp"
                    android:layout_alignParentBottom="true"
                    android:layout_centerHorizontal="true"></TabWidget>

                <FrameLayout
                    android:id="@android:id/tabcontent"
                    android:layout_width="match_parent"
                    android:layout_height="match_parent">

                    <RelativeLayout
                        android:id="@+id/tab1"
                        android:layout_width="match_parent"
                        android:layout_height="match_parent"></RelativeLayout>

                    <RelativeLayout
                        android:id="@+id/tab2"
                        android:layout_width="match_parent"
                        android:layout_height="match_parent">
                    </RelativeLayout>

                    <RelativeLayout
                        android:id="@+id/tab3"
                        android:layout_width="match_parent"
                        android:layout_height="match_parent"></RelativeLayout>

                    <RelativeLayout
                        android:id="@+id/tab4"
                        android:layout_width="match_parent"
                        android:layout_height="match_parent"></RelativeLayout>

                    <RelativeLayout
                        android:id="@+id/tab5"
                        android:layout_width="match_parent"
                        android:layout_height="match_parent"></RelativeLayout>
                </FrameLayout>
            </RelativeLayout>
        </TabHost>
    </RelativeLayout>

    <android.support.design.widget.NavigationView
        android:id="@+id/navigation_view"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_gravity="start"
        app:headerLayout="@layout/headerview"
        app:menu="@menu/drawer" />

</android.support.v4.widget.DrawerLayout>