How to Make an App's Background Image Repeat

How to make an app's background image repeat

Ok, here's what I've got in my app. It includes a hack to prevent ListViews from going black while scrolling.

drawable/app_background.xml:

<?xml version="1.0" encoding="utf-8"?>
    <bitmap xmlns:android="http://schemas.android.com/apk/res/android"
        android:src="@drawable/actual_pattern_image"
        android:tileMode="repeat" />

values/styles.xml:

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

  <style name="app_theme" parent="android:Theme">
    <item name="android:windowBackground">@drawable/app_background</item>
    <item name="android:listViewStyle">@style/TransparentListView</item>
    <item name="android:expandableListViewStyle">@style/TransparentExpandableListView</item>
  </style>

  <style name="TransparentListView" parent="@android:style/Widget.ListView">
    <item name="android:cacheColorHint">@android:color/transparent</item>
  </style>

  <style name="TransparentExpandableListView" parent="@android:style/Widget.ExpandableListView">
    <item name="android:cacheColorHint">@android:color/transparent</item>
  </style>

</resources>

AndroidManifest.xml:

//
<application android:theme="@style/app_theme">
//

How can I repeat a pattern image to create a background in React Native?

You can't repeat background image like CSS in React Native. But, You can achieve it by iterating the image like

var React = require('react-native');
var Dimensions = require('Dimensions');

var {
  Image
} = React;

var RepeatImage = React.createClass({
    render: function(){
    var images = [],  
    imgWidth = 7,
    winWidth =Dimensions.get('window').width;

    for(var i=0;i<Math.ceil(winWidth / imgWidth);i++){
        images.push((
           <Image source={{uri: 'http://xxx.png'}} style={} />
        ))
    }

    return (
        <View style={{flex:1,flexDirection:'row'}}>
        {
         images.map(function(img,i){
         return img;
         })
        }
        </View>
    )
  }
});

Android Splashscreen background repeat pattern

Seems like you are not using <layer-list> in your drawable. try this code instead.

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <bitmap
            android:src="@drawable/ic_background_blue"
            android:tileMode="repeat"/>
    </item>
    <item>
        <bitmap
            android:gravity="center"
            android:src="@drawable/ic_splash_logo"/>
    </item>
</layer-list>

EDIT: Checked the image that you provided and its resolution seems to be too big (2000 x 2000). Possible solutions are scaling the image down manually or make the image background programmatically.

background image not repeating in android layout

Create a copy of grass_bg.xml for each time you use it (ie grass_bg_2.xml). This worked for me to assure the tileMode setting was not lost when the same background is used repeatedly.

Background image will not fit in the whole page in App.css in create-react-app

Basically, background-size: 100% will fill the screen with the image, and crop it if necessary.

I think what you want is to see the whole image. You should use contain for that:

    html {

     width: 100%;

     height: 100%;

     background: red url('http://media.gettyimages.com/photos/groningen-city-view- picture-id588880579?s=612x612') no-repeat center;

     background-size:contain;

    }