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[Annotation] Automatically add layer and source while changing style. (…
…#29) * [Annotation] Automatically add layer and source while changing style. * Apply the cache properties while changing style * Fix test cases
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Kevin Li
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Jan 26, 2021
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114 changes: 114 additions & 0 deletions
114
app/src/main/java/com/mapbox/maps/testapp/examples/annotation/Utils.kt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,114 @@ | ||
| package com.mapbox.maps.testapp.examples.annotation | ||
|
|
||
| import android.content.Context | ||
| import com.mapbox.core.utils.TextUtils | ||
| import com.mapbox.geojson.Point | ||
| import com.mapbox.maps.Style | ||
| import java.io.BufferedReader | ||
| import java.io.IOException | ||
| import java.io.InputStreamReader | ||
| import java.io.Reader | ||
| import java.nio.charset.Charset | ||
| import java.util.* | ||
|
|
||
| /** | ||
| * Useful utilities used throughout the testapp. | ||
| */ | ||
| object Utils { | ||
|
|
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| private val STYLES = | ||
| arrayOf(Style.MAPBOX_STREETS, Style.OUTDOORS, Style.LIGHT, Style.DARK, Style.SATELLITE_STREETS) | ||
|
|
||
| private var index: Int = 0 | ||
|
|
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| /** | ||
| * Utility to cycle through map styles. Useful to test if runtime styling source and layers transfer over to new | ||
| * style. | ||
| * | ||
| * @return a string ID representing the map style | ||
| */ | ||
| val nextStyle: String | ||
| get() { | ||
| index++ | ||
| if (index == STYLES.size) { | ||
| index = 0 | ||
| } | ||
| return STYLES[index] | ||
| } | ||
|
|
||
| /** | ||
| * Utility for getting a list of random points. | ||
| * | ||
| * @return a a list of random points | ||
| */ | ||
| fun createRandomPoints(): List<Point> { | ||
| val random = Random() | ||
| val points: MutableList<Point> = ArrayList<Point>() | ||
| for (i in 0 until random.nextInt(10)) { | ||
| points.add( | ||
| Point.fromLngLat( | ||
| random.nextDouble() * -360.0 + 180.0, | ||
| random.nextDouble() * -180.0 + 90.0 | ||
| ) | ||
| ) | ||
| } | ||
| return points | ||
| } | ||
|
|
||
| /** | ||
| * Utility for getting a list of lists of random points | ||
| * | ||
| * @return a list of lists of random points | ||
| */ | ||
| fun createRandomPointsList(): List<List<Point>> { | ||
| val random = Random() | ||
| val points = mutableListOf<Point>() | ||
| val firstLast = Point.fromLngLat( | ||
| random.nextDouble() * -360.0 + 180.0, | ||
| random.nextDouble() * -180.0 + 90.0 | ||
| ) | ||
| points.add(firstLast) | ||
| for (i in 0 until random.nextInt(10)) { | ||
| points.add( | ||
| Point.fromLngLat( | ||
| random.nextDouble() * -360.0 + 180.0, | ||
| random.nextDouble() * -180.0 + 90.0 | ||
| ) | ||
| ) | ||
| } | ||
| points.add(firstLast) | ||
| return listOf(points) | ||
| } | ||
|
|
||
| /** | ||
| * Utility for getting a random point | ||
| * | ||
| * @return a random point | ||
| */ | ||
| fun createRandomPoint(): Point { | ||
| val random = Random() | ||
| return Point.fromLngLat( | ||
| random.nextDouble() * -360.0 + 180.0, | ||
| random.nextDouble() * -180.0 + 90.0 | ||
| ) | ||
| } | ||
|
|
||
| @Throws(IOException::class) | ||
| fun loadStringFromAssets(context: Context, fileName: String): String { | ||
| if (TextUtils.isEmpty(fileName)) { | ||
| throw NullPointerException("No GeoJSON File Name passed in.") | ||
| } | ||
| val `is` = context.assets.open(fileName) | ||
| val rd = BufferedReader(InputStreamReader(`is`, Charset.forName("UTF-8"))) | ||
| return readAll(rd) | ||
| } | ||
|
|
||
| @Throws(IOException::class) | ||
| private fun readAll(rd: Reader): String { | ||
| val sb = StringBuilder() | ||
| rd.forEachLine { | ||
| sb.append(it) | ||
| } | ||
| return sb.toString() | ||
| } | ||
| } |
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