如何(如果可能的话)我可以设置自定义字体在ActionBar标题文本(只有-不是标签文本)与字体在我的资产文件夹?我不想使用android:logo选项。
当前回答
我只是在onCreate()函数中做了以下工作:
TypefaceSpan typefaceSpan = new TypefaceSpan("font_to_be_used");
SpannableString str = new SpannableString("toolbar_text");
str.setSpan(typefaceSpan,0, str.length(), Spanned.SPAN_EXCLUSIVE_EXCLUSIVE);
getSupportActionBar().setTitle(str);
我正在使用支持库,如果你不使用它们,我猜你应该切换到getActionBar()而不是getSupportActionBar()。
在Android Studio 3中,您可以按照以下说明添加自定义字体https://developer.android.com/guide/topics/ui/look-and-feel/fonts-in-xml.html,然后在“font_to_be_used”中使用您新添加的字体
其他回答
使用新的工具栏在支持库设计你自己的动作栏或使用下面的代码
膨胀的Textview不是一个好的选择,尝试可扩展的字符串生成器
Typeface font2 = Typeface.createFromAsset(getAssets(), "fonts/<your font in assets folder>");
SpannableStringBuilder SS = new SpannableStringBuilder("MY Actionbar Tittle");
SS.setSpan (new CustomTypefaceSpan("", font2), 0, SS.length(),Spanned.SPAN_EXCLUSIVE_INCLUSIVE);
actionBar.setTitle(ss);
复制以下类
public class CustomTypefaceSpan extends TypefaceSpan{
private final Typeface newType;
public CustomTypefaceSpan(String family, Typeface type) {
super(family);
newType = type;
}
@Override
public void updateDrawState(TextPaint ds) {
applyCustomTypeFace(ds, newType);
}
@Override
public void updateMeasureState(TextPaint paint) {
applyCustomTypeFace(paint, newType);
}
private static void applyCustomTypeFace(Paint paint, Typeface tf) {
int oldStyle;
Typeface old = paint.getTypeface();
if (old == null) {
oldStyle = 0;
} else {
oldStyle = old.getStyle();
}
int fake = oldStyle & ~tf.getStyle();
if ((fake & Typeface.BOLD) != 0) {
paint.setFakeBoldText(true);
}
if ((fake & Typeface.ITALIC) != 0) {
paint.setTextSkewX(-0.25f);
}
paint.setTypeface(tf);
}
}
我们需要使用反射来实现这一点
final int titleId = activity.getResources().getIdentifier("action_bar_title", "id", "android");
final TextView title;
if (activity.findViewById(titleId) != null) {
title = (TextView) activity.findViewById(titleId);
title.setTextColor(Color.BLACK);
title.setTextColor(configs().getColor(ColorKey.GENERAL_TEXT));
title.setTypeface(configs().getTypeface());
} else {
try {
Field f = bar.getClass().getDeclaredField("mTitleTextView");
f.setAccessible(true);
title = (TextView) f.get(bar);
title.setTextColor(Color.BLACK);
title.setTypeface(configs().getTypeface());
} catch (NoSuchFieldException e) {
} catch (IllegalAccessException e) {
}
}
以下代码将适用于所有版本。我确实在gingerbread设备和JellyBean设备上检查了这一点
private void actionBarIdForAll()
{
int titleId = 0;
if(Build.VERSION.SDK_INT>=Build.VERSION_CODES.HONEYCOMB)
{
titleId = getResources().getIdentifier("action_bar_title", "id", "android");
}
else
{
// This is the id is from your app's generated R class when ActionBarActivity is used for SupportActionBar
titleId = R.id.action_bar_title;
}
if(titleId>0)
{
// Do whatever you want ? It will work for all the versions.
// 1. Customize your fonts
// 2. Infact, customize your whole title TextView
TextView titleView = (TextView)findViewById(titleId);
titleView.setText("RedoApp");
titleView.setTextColor(Color.CYAN);
}
}
如果你想在整个活动中设置所有textview的字体,你可以使用这样的东西:
public static void setTypefaceToAll(Activity activity)
{
View view = activity.findViewById(android.R.id.content).getRootView();
setTypefaceToAll(view);
}
public static void setTypefaceToAll(View view)
{
if (view instanceof ViewGroup)
{
ViewGroup g = (ViewGroup) view;
int count = g.getChildCount();
for (int i = 0; i < count; i++)
setTypefaceToAll(g.getChildAt(i));
}
else if (view instanceof TextView)
{
TextView tv = (TextView) view;
setTypeface(tv);
}
}
public static void setTypeface(TextView tv)
{
TypefaceCache.setFont(tv, TypefaceCache.FONT_KOODAK);
}
TypefaceCache:
import java.util.TreeMap;
import android.graphics.Typeface;
import android.widget.TextView;
public class TypefaceCache {
//Font names from asset:
public static final String FONT_ROBOTO_REGULAR = "fonts/Roboto-Regular.ttf";
public static final String FONT_KOODAK = "fonts/Koodak.ttf";
private static TreeMap<String, Typeface> fontCache = new TreeMap<String, Typeface>();
public static Typeface getFont(String fontName) {
Typeface tf = fontCache.get(fontName);
if(tf == null) {
try {
tf = Typeface.createFromAsset(MyApplication.getAppContext().getAssets(), fontName);
}
catch (Exception e) {
return null;
}
fontCache.put(fontName, tf);
}
return tf;
}
public static void setFont(TextView tv, String fontName)
{
tv.setTypeface(getFont(fontName));
}
}
书法库让你通过应用程序主题设置自定义字体,这也适用于操作栏。
<style name="AppTheme" parent="android:Theme.Holo.Light.DarkActionBar">
<item name="android:textViewStyle">@style/AppTheme.Widget.TextView</item>
</style>
<style name="AppTheme.Widget"/>
<style name="AppTheme.Widget.TextView" parent="android:Widget.Holo.Light.TextView">
<item name="fontPath">fonts/Roboto-ThinItalic.ttf</item>
</style>
激活书法所需要的是将它附加到你的活动上下文:
@Override
protected void attachBaseContext(Context newBase) {
super.attachBaseContext(new CalligraphyContextWrapper(newBase));
}
默认的自定义属性是fontPath,但是您可以通过在Application类中使用calligraphy hyconfig . builder初始化它来为路径提供您自己的自定义属性。不鼓励使用android:fontFamily。
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