我希望我的按钮文本采用Copperplate Gothic Light字体,但我还没有遇到这样一个简单功能的简单干净代码。帮助!
PS:由于 android 自带 ariel 和其他一些字体,我们需要导入 我们希望使用的字体(抱歉没有更好的词,因为我是新手)。到目前为止,这就是我所能收集到的全部内容,这就是我的足迹的终点。
如果您打算为多个按钮添加相同的字体,我建议您一路实现并将其实现为样式和子类按钮:
public class ButtonPlus extends Button {
public ButtonPlus(Context context) {
super(context);
}
public ButtonPlus(Context context, AttributeSet attrs) {
super(context, attrs);
CustomFontHelper.setCustomFont(this, context, attrs);
}
public ButtonPlus(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
CustomFontHelper.setCustomFont(this, context, attrs);
}
}
这是一个帮助类,用于根据 com.my.package:font 属性在 TextView 上设置字体(请记住,Button 是 TextView 的子类):
public class CustomFontHelper {
/**
* Sets a font on a textview based on the custom com.my.package:font attribute
* If the custom font attribute isn't found in the attributes nothing happens
* @param textview
* @param context
* @param attrs
*/
public static void setCustomFont(TextView textview, Context context, AttributeSet attrs) {
TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.CustomFont);
String font = a.getString(R.styleable.CustomFont_font);
setCustomFont(textview, font, context);
a.recycle();
}
/**
* Sets a font on a textview
* @param textview
* @param font
* @param context
*/
public static void setCustomFont(TextView textview, String font, Context context) {
if(font == null) {
return;
}
Typeface tf = FontCache.get(font, context);
if(tf != null) {
textview.setTypeface(tf);
}
}
}
这是 FontCache 以减少旧设备上的内存使用:
public class FontCache {
private static Hashtable<String, Typeface> fontCache = new Hashtable<String, Typeface>();
public static Typeface get(String name, Context context) {
Typeface tf = fontCache.get(name);
if(tf == null) {
try {
tf = Typeface.createFromAsset(context.getAssets(), name);
}
catch (Exception e) {
return null;
}
fontCache.put(name, tf);
}
return tf;
}
}
在 res/values/attrs.xml 我们定义了自定义样式属性
<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="CustomFont">
<attr name="font" format="string"/>
</declare-styleable>
</resources>
最后是布局中的一个示例:
<com.my.package.buttons.ButtonPlus
style="@style/button"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="@string/button_sometext"/>
在 res/values/style.xml
<style name="button" parent="@android:style/Widget.Button">
<item name="com.my.package:font">fonts/copperplate_gothic_light.TTF</item>
</style>
这似乎是一项非常艰巨的工作,但是一旦您拥有几个要更改字体的按钮和文本字段,您就会感谢我。
1) 以 .ttf(例如,CopperplateGothicLight.ttf)文件的形式获取您需要的字体,并将其放在项目的 /assets/ 目录中
2)使用此代码来引用字体并将其设置为您的按钮:
Typeface copperplateGothicLight = Typeface.createFromAsset(getAppContext().getAssets(), "CopperplateGothicLight.ttf");
yourButton.setTypeface(copperplateGothicLight);
经过多次研究,我最好的选择是:
public class CustomButton extends Button {
Typeface normalTypeface = FontCache.get("fonts/CopperplateGothicLight.ttf", getContext());
Typeface boldTypeface = FontCache.get("fonts/CopperplateGothicBold.ttf", getContext());
/**
* @param context
*/
public CustomButton(Context context) {
super(context);
}
/**
* @param context
* @param attrs
*/
public CustomButton(Context context, AttributeSet attrs) {
super(context, attrs);
}
/**
* @param context
* @param attrs
* @param defStyleAttr
*/
public CustomButton(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
}
}
然后使用第一个答案中的 fontCache :Memory leaks with custom font for set custom font
public class FontCache {
private static Hashtable<String, Typeface> fontCache = new Hashtable<String, Typeface>();
public static Typeface get(String name, Context context) {
Typeface tf = fontCache.get(name);
if(tf == null) {
try {
tf = Typeface.createFromAsset(context.getAssets(), name);
}
catch (Exception e) {
return null;
}
fontCache.put(name, tf);
}
return tf;
}
}
更少的代码和更多的android标准使用!
MainActivity.java
package com.mehuljoisar.customfontdemo;
import android.app.Activity;
import android.graphics.Typeface;
import android.os.Bundle;
import android.view.Menu;
import android.widget.Button;
public class MainActivity extends Activity {
private Button button1;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button1 = (Button)findViewById(R.id.button1);
button1.setTypeface(Typeface.createFromAsset(getAssets(), "copperplate-gothic-light.ttf"));
button1.setText("hello");
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.activity_main, menu);
return true;
}
}
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:text="@string/hello_world" />
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginTop="24dp"
android:text="Button" />
下载所需字体的链接: copperplate_gothic_light
把它放在你的资产文件夹中。
截屏:
我希望它会有所帮助!
首先下载字体样式的TTF文件,然后将其放入assets
项目的文件夹中。
您可以通过以下方式以编程方式设置它:
Typeface font_style = Typeface.createFromAsset(getAssets(), "yourcystomfontstyle.ttf");
yourbutton.setTypeface(font_style);
在 kotlin 中,您可以创建自定义按钮并覆盖字体。
class StandardButton @JvmOverloads constructor(context: Context, attrs: AttributeSet? = null, dyfStyleAttr: Int = 0) : AppCompatButton(context, attrs, dyfStyleAttr) {
init {
typeface = Typeface.createFromAsset(context.assets, "fonts/CopperplateGothicBold.ttf")
}
}
您可以使用以下代码。只需根据您的要求替换 mTextFont() 方法中的字体名称即可。
public class Button_Roboto_Regular extends Button {
public Button_Roboto_Regular(Context context) {
super(context);
mTextFont(context);
}
public Button_Roboto_Regular(Context context, AttributeSet attrs) {
super(context, attrs);
mTextFont(context);
}
public Button_Roboto_Regular(Context context, AttributeSet attrs, int defStyleAttr) {
super(context, attrs, defStyleAttr);
mTextFont(context);
}
private void mTextFont(Context context) {
Typeface face = Typeface.createFromAsset(context.getAssets(), "fonts/Roboto-Regular_0.ttf");
this.setTypeface(face);
}
尝试这个。对于 EditTextViews、TextViews 也很有用.. 随便!
<your.namespace.app.FontButton
app:font="montserrat"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
怎么可能?这边走!
public class FontButton extends Button {
public FontEditText(Context context) {
this( context, null );
}
public FontEditText(Context context, AttributeSet attrs) {
this( context, attrs, 0 );
init( context, attrs );
}
public FontEditText(Context context, AttributeSet attrs, int defStyle) {
super( context, attrs, defStyle );
init( context, attrs );
}
public FontEditText(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
super( context, attrs, defStyleAttr, defStyleRes );
init( context, attrs );
}
private void init(Context context, AttributeSet attrs) {
TypedArray ta = context.obtainStyledAttributes( attrs, R.styleable.Fonts );
if ( ta != null ) {
String fontAsset = ta.getString( R.styleable.Fonts_font );
if ( !StringUtils.isEmpty( fontAsset ) ) {
int type = Integer.parseInt( fontAsset );
Typeface typeFace = FontManager.getInstance( context ).getByType( type );
ta.recycle();
super.setTypeface( typeFace );
}
}
}
}
public class FontManager {
private static FontManager Instance;
private Context context;
private Typeface robotoCondensedBold;
private Typeface robotoCondensed;
private Typeface robotoLight;
private Typeface kronica;
private Typeface montserrat;
private Typeface montserratLight;
private Typeface keepCalmMedium;
private FontManager(Context context) {
this.context = context;
this.robotoCondensedBold = Typeface.createFromAsset( context.getAssets(), "fonts/RobotoCondensed-Bold.ttf" );
this.robotoCondensed = Typeface.createFromAsset( context.getAssets(), "fonts/RobotoCondensed-Regular.ttf" );
this.robotoLight = Typeface.createFromAsset( context.getAssets(), "fonts/Roboto-Light.ttf" );
this.kronica = Typeface.createFromAsset( context.getAssets(), "fonts/kronika.ttf" );
this.montserrat = Typeface.createFromAsset( context.getAssets(), "fonts/Montserrat-Regular.ttf" );
this.montserratLight = Typeface.createFromAsset( context.getAssets(), "fonts/Montserrat-Light.ttf" );
this.keepCalmMedium = Typeface.createFromAsset( context.getAssets(), "fonts/KeepCalmMedium.ttf" );
}
public synchronized static FontManager getInstance(Context context) {
if ( Instance == null )
Instance = new FontManager( context );
return Instance;
}
public Typeface getByType(int type) {
switch ( type ) {
case 0:
return FontManager.getInstance( context ).getRobotoCondensedBold();
case 1:
return FontManager.getInstance( context ).getRobotoLight();
case 2:
return FontManager.getInstance( context ).getKronica();
case 3:
return FontManager.getInstance( context ).getRobotoCondensed();
case 4:
return FontManager.getInstance( context ).getMontserrat();
case 5:
return FontManager.getInstance( context ).getMontserratLight();
case 6:
return FontManager.getInstance( context ).getKeepCalmMedium();
default:
return Typeface.DEFAULT;
}
}
public Typeface getRobotoCondensedBold() {
return robotoCondensedBold;
}
public Typeface getKronica() {
return kronica;
}
public Typeface getRobotoCondensed() {
return robotoCondensed;
}
public Typeface getRobotoLight() {
return robotoLight;
}
public Typeface getMontserrat() {
return montserrat;
}
public Typeface getMontserratLight() {
return montserratLight;
}
public Typeface getKeepCalmMedium() {
return keepCalmMedium;
}
此外,font_attrs.xml
在您的res
文件夹中:
<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="Fonts">
<attr name="font" format="enum">
<enum name="robotoCondensedBold" value="0"/>
<enum name="robotoLight" value="1"/>
<enum name="kronica" value="2"/>
<enum name="robotoCondensed" value="3"/>
<enum name="montserrat" value="4"/>
<enum name="montserratLight" value="5"/>
<enum name="keepCalmMedium" value="6"/>
</attr>
</declare-styleable>
</resources>
请注意,您只需要修改
FontManager
和font_attrs.xml
即可自定义您的字体!
您可以使用下面给出的自定义按钮类。将您的字体放在资产/字体文件夹中。
public class CustomButton extends Button{
public CustomButton(Context context, AttributeSet attrs) {
super(context, attrs);
init();
// TODO Auto-generated constructor stub
}
public CustomButton(Context context) {
super(context);
init();
// TODO Auto-generated constructor stub
}
public CustomButton(Context context, AttributeSet attrs, int defStyle) {
super(context, attrs, defStyle);
init();
// TODO Auto-generated constructor stub
}
private void init(){
Typeface font_type=Typeface.createFromAsset(getContext().getAssets(), "font/ProximaNova-Bold.ttf");
setTypeface(font_type);
}
}
现在您可以使用 xml 中的按钮,如下所示。
<model.CustomButton
android:id="@+id/search"
android:layout_width="@dimen/edittext_width_large"
android:layout_height="@dimen/button_height"
android:layout_below="@+id/cars"
android:layout_centerHorizontal="true"
android:layout_marginTop="@dimen/pad_20dp"
android:background="@drawable/button_pressed_bg"
android:text="@string/find_car"
android:textColor="@color/white" />