TypefaceUtils.java

package net.avenwu.support.util;

import android.content.Context;
import android.content.res.AssetManager;
import android.graphics.Paint;
import android.graphics.Typeface;
import android.util.Log;
import android.widget.TextView;

import java.lang.ref.WeakReference;
import java.util.HashMap;
import java.util.Map;

/**
 * Created by chaobin on 10/8/15.
 */
public class TypefaceUtils {
    private static final Map<String, WeakReference<Typeface>> sCachedFonts = new HashMap<>();

    /**
     * A helper loading a custom font.
     *
     * @param assetManager App's asset manager.
     * @param filePath     The path of the file.
     * @return Return {@link android.graphics.Typeface} or null if the path is invalid.
     */
    public static Typeface load(final AssetManager assetManager, final String filePath) {
        synchronized (sCachedFonts) {
            try {
                if (!sCachedFonts.containsKey(filePath) || sCachedFonts.get(filePath).get() == null) {
                    final Typeface typeface = Typeface.createFromAsset(assetManager, filePath);
                    sCachedFonts.put(filePath, new WeakReference<Typeface>(typeface));
                    return typeface;
                }
            } catch (Exception e) {
                Log.w("Calligraphy", "Can't create asset from " + filePath + ". Make sure you have passed in the correct path and file name.", e);
                sCachedFonts.put(filePath, null);
                return null;
            }
            return sCachedFonts.get(filePath).get();
        }
    }

    public static void setTypeface(Context context, TextView textView, String filePath) {
        if (textView == null || context == null) return;
        textView.setPaintFlags(textView.getPaintFlags() | Paint.SUBPIXEL_TEXT_FLAG | Paint.ANTI_ALIAS_FLAG);
        textView.setTypeface(load(context.getAssets(), filePath));
    }
}