編輯:關於Android編程
一、
1、通過反射來獲取系統字體並替換
import java.lang.reflect.Field; import android.content.Context; import android.graphics.Typeface; public final class FontsOverride { public static void setDefaultFont(Context context, String staticTypefaceFieldName, String fontAssetName) { final Typeface regular = Typeface.createFromAsset(context.getAssets(), fontAssetName); replaceFont(staticTypefaceFieldName, regular); } protected static void replaceFont(String staticTypefaceFieldName, final Typeface newTypeface) { try { final Field staticField = Typeface.class .getDeclaredField(staticTypefaceFieldName); staticField.setAccessible(true); staticField.set(null, newTypeface); } catch (NoSuchFieldException e) { e.printStackTrace(); } catch (IllegalAccessException e) { e.printStackTrace(); } } }
public final class Application extends android.app.Application { @Override public void onCreate() { super.onCreate(); FontsOverride.setDefaultFont(this, "DEFAULT", "MyFontAsset.ttf"); FontsOverride.setDefaultFont(this, "MONOSPACE", "MyFontAsset2.ttf"); FontsOverride.setDefaultFont(this, "SERIF", "MyFontAsset3.ttf"); FontsOverride.setDefaultFont(this, "SANS_SERIF", "MyFontAsset4.ttf"); } }
配置文件AndroidManifest.xml中修改(只限系統theme中已有字體)
/** * Recursively sets a {@link Typeface} to all * {@link TextView}s in a {@link ViewGroup}. */ public static final void setAppFont(ViewGroup mContainer, Typeface mFont, boolean reflect) { if (mContainer == null || mFont == null) return; final int mCount = mContainer.getChildCount(); // Loop through all of the children. for (int i = 0; i < mCount; ++i) { final View mChild = mContainer.getChildAt(i); if (mChild instanceof TextView) { // Set the font if it is a TextView. ((TextView) mChild).setTypeface(mFont); } else if (mChild instanceof ViewGroup) { // Recursively attempt another ViewGroup. setAppFont((ViewGroup) mChild, mFont); } else if (reflect) { try { Method mSetTypeface = mChild.getClass().getMethod("setTypeface", Typeface.class); mSetTypeface.invoke(mChild, mFont); } catch (Exception e) { /* Do something... */ } } } }
final Typeface mFont = Typeface.createFromAsset(getAssets(), "fonts/MyFont.ttf"); final ViewGroup mContainer = (ViewGroup) findViewById( android.R.id.content).getRootView(); HomeActivity.setAppFont(mContainer, mFont);
public class CusFntTextView extends TextView { public CusFntTextView(Context context, AttributeSet attrs, int defStyle) { super(context, attrs, defStyle); init(); } public CusFntTextView(Context context, AttributeSet attrs) { super(context, attrs); init(); } public CusFntTextView(Context context) { super(context); init(); } private void init() { if (!isInEditMode()) { Typeface tf = Typeface.createFromAsset(getContext().getAssets(), "Futura.ttf"); setTypeface(tf); } }
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