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[android] provide default font list for pre lollipop

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This commit is contained in:
tobrun
2019-08-19 15:03:26 +02:00
committed by Tobrun
parent 71a334152a
commit 073a243862
3 changed files with 25 additions and 9 deletions
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31
platform/android/MapboxGLAndroidSDK/src/main/java/com/mapbox/mapboxsdk/utils/FontUtils.java
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@@ -1,7 +1,8 @@
package com.mapbox.mapboxsdk.utils;
import android.graphics.Typeface;
import android.os.Build;
import android.support.annotation.RequiresApi;
import com.mapbox.mapboxsdk.MapStrictMode;
import com.mapbox.mapboxsdk.log.Logger;
@@ -18,6 +19,14 @@ import static com.mapbox.mapboxsdk.constants.MapboxConstants.DEFAULT_FONT;
public class FontUtils {
private static final String TAG = "Mbgl-FontUtils";
private static final String TYPEFACE_FONTMAP_FIELD_NAME = "sSystemFontMap";
private static final List<String> DEFAULT_FONT_STACKS = new ArrayList<>();
static {
DEFAULT_FONT_STACKS.add("sans-serif");
DEFAULT_FONT_STACKS.add("serif");
DEFAULT_FONT_STACKS.add("monospace");
}
private FontUtils() {
// no instance
@@ -34,7 +43,13 @@ public class FontUtils {
return null;
}
List<String> validFonts = getAvailableFonts();
List<String> validFonts;
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
validFonts = getDeviceFonts();
} else {
validFonts = DEFAULT_FONT_STACKS;
}
for (String fontName : fontNames) {
if (validFonts.contains(fontName)) {
return fontName;
@@ -47,16 +62,18 @@ public class FontUtils {
return DEFAULT_FONT;
}
private static List<String> getAvailableFonts() {
@SuppressWarnings( {"JavaReflectionMemberAccess", "unchecked"})
@RequiresApi(Build.VERSION_CODES.LOLLIPOP)
private static List<String> getDeviceFonts() {
List<String> fonts = new ArrayList<>();
try {
Typeface typeface = Typeface.create(Typeface.DEFAULT, Typeface.NORMAL);
Field f = Typeface.class.getDeclaredField("sSystemFontMap");
f.setAccessible(true);
Map<String, Typeface> fontMap = (Map<String, Typeface>) f.get(typeface);
Field field = Typeface.class.getDeclaredField(TYPEFACE_FONTMAP_FIELD_NAME);
field.setAccessible(true);
Map<String, Typeface> fontMap = (Map<String, Typeface>) field.get(typeface);
fonts.addAll(fontMap.keySet());
} catch (Exception exception) {
Logger.e(TAG,"Couldn't load fonts from Typeface", exception);
Logger.e(TAG, "Couldn't load fonts from Typeface", exception);
MapStrictMode.strictModeViolation("Couldn't load fonts from Typeface", exception);
}
return fonts;