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Android

Posted by Ben Rebecca
Ben Rebecca
3,055 Points

Using PercentRelativeLayout in older APIs (Android)

Hi all,

I'm experimenting with Percent Relative Layout which is helping me create a dynamically resizing layout appropriate on screens of any size.

It looks perfect on an emulator, but when I try to run the app on my phone (running API 16 or so, android 4) nothing but textviews show up. ImageViews, Buttons and everything else does not show.

The emulator seems to work back to API 16 as does the render preview. I have no idea why it won't work on the phone.

Here's what I'm working with below. Any help is appreciated! Thank you :)

<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="fill_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
tools:context="com.example.y"
tools:showIn="@layout/app_bar_main"
android:background="#FFF"
android:weightSum="1"
android:orientation="vertical">

<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/scrollView"
android:scrollIndicators="top">

<android.support.percent.PercentRelativeLayout
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceLarge"
        android:text="This text appears correctly"
        android:textSize="28sp"
        android:id="@+id/textMainTitle"
        android:layout_gravity="center"
        android:layout_alignParentTop="true"
        android:textColor="#ffffff"
        android:singleLine="true"/>

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:textAppearance="?android:attr/textAppearanceMedium"
        android:text="As does this text"
        android:id="@+id/textMainSubTitle"
        android:layout_gravity="center_horizontal"
        android:layout_below="@id/textMainTitle"
        />


    <ImageView
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:id="@+id/btnIntro"
        android:src="@drawable/button1" //DOES NOT APPEAR IN PHONE
        app:layout_widthPercent="30%"
        app:layout_heightPercent="25%"
        android:layout_below="@id/textMainSubTitle"
        android:layout_marginStart="10dp"
        android:layout_marginLeft="10dp" />

  </android.support.percent.PercentRelativeLayout>

 </ScrollView>


</LinearLayout>