My app is running fine on ics but not in froyo

Question

I have this app where in I have the below shown layout as the starting activity.It works fine in ICS but not in froyo.

In froyo it only shows the ABOUT button and nothing else. I have also updated my manifest file below

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.iolcalci"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />

    <supports-screens
        android:anyDensity="true"
        android:resizeable="true" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.iolcalci.MainActivity"
            android:label="@string/app_name"
            android:screenOrientation="portrait" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name="com.example.iolcalci.Selection"
            android:label="@string/app_name"
            android:screenOrientation="portrait"
            android:windowSoftInputMode="adjustResize|adjustPan|stateVisible" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.DEFAULT" />
            </intent-filter>
        </activity>
        <activity
            android:name="com.example.iolcalci.Srkt"
            android:label="@string/title_activity_srkt"
            android:screenOrientation="portrait" >
        </activity>
        <activity
            android:name="com.example.iolcalci.Srk2"
            android:label="@string/title_activity_srk2"
            android:screenOrientation="portrait" >
        </activity>
        <activity
            android:name="com.example.iolcalci.Holladay"
            android:label="@string/title_activity_holladay"
            android:screenOrientation="portrait" >
        </activity>
        <activity
            android:name="com.example.iolcalci.Binkhorst"
            android:label="@string/title_activity_binkhorst"
            android:screenOrientation="portrait" >
        </activity>
        <activity
            android:name="com.example.iolcalci.Srkt_x"
            android:label="@string/title_activity_srkt_x" >
        </activity>
        <activity
            android:name="com.example.iolcalci.Srk2_x"
            android:label="@string/title_activity_srk2_x" >
        </activity>
        <activity
            android:name="com.example.iolcalci.Binkhorst_x"
            android:label="@string/title_activity_binkhorst_x" >
        </activity>
        <activity
            android:name="com.example.iolcalci.Holladay_x"
            android:label="@string/title_activity_holladay_x" >
        </activity>
        <activity
            android:name="com.example.iolcalci.Help"
            android:label="@string/title_activity_help" >
        </activity>
    </application>

</manifest>

---

XML file is here

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/black"
tools:context=".FullscreenActivity" 
android:id="@+id/frame_layout">

    <LinearLayout
        android:id="@+id/fullscreen_content_controls"
        style="@style/ButtonBar"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|center_horizontal"
        android:background="@color/black_overlay"
        android:orientation="horizontal"
        tools:ignore="UselessParent" >
    </LinearLayout>

    <Button
        style="@style/ButtonBarButton"
        android:layout_width="222dp"
        android:layout_height="62dp"
        android:layout_marginLeft="45dp"
        android:layout_marginTop="75dp"
        android:background="@color/black"
        android:paddingLeft="20dp"
        android:id="@+id/iolCalculation"
        android:text="@string/Button"
        android:textColor="@color/WhiteSmoke"
        android:textStyle="bold" />

    <Button
        style="@style/ButtonBarButton"
        android:layout_width="222dp"
        android:layout_height="62dp"
        android:layout_marginLeft="45dp"
        android:id="@+id/sHelp"
        android:layout_marginTop="139dp"
        android:background="@color/Black"
        android:gravity="center"
        android:paddingLeft="10dp"
        android:text="@string/Button1"
        android:textColor="@color/WhiteSmoke"
        android:textStyle="bold" />

    <Button
        style="@style/ButtonBarButton"
        android:layout_width="222dp"
        android:layout_height="62dp"
        android:id="@+id/sAbout"
        android:layout_marginLeft="45dp"
        android:layout_marginTop="203dp"
        android:background="@color/Black"
        android:paddingLeft="10dp"
        android:text="@string/Button2"
        android:textColor="@color/WhiteSmoke"
        android:textStyle="bold" >

    </Button>

---

froyo screen

---

Please help me and is there any way to test my app for froyo on pc?

Answer 1

<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".FullscreenActivity" 
android:id="@+id/frame_layout">

<LinearLayout
    android:id="@+id/fullscreen_content_controls"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:layout_gravity="top|center_horizontal"
    android:orientation="vertical" >

<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_marginTop="6dp"
     android:layout_gravity="center_horizontal"
    android:paddingLeft="20dp"
    android:id="@+id/iolCalculation"
    android:textStyle="bold" />

<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/sHelp"
    android:layout_marginTop="6dp"
    android:gravity="center"
     android:layout_gravity="center_horizontal"
    android:paddingLeft="10dp"
    android:textStyle="bold" />

<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/sAbout"
     android:layout_gravity="center_horizontal"
    android:layout_marginTop="6dp"
    android:paddingLeft="10dp"
    android:textStyle="bold" >

</Button>
    </LinearLayout>
</FrameLayout>

This code works on all OSes. Do refrain from using fixed widths and heights!