[英]How to set a particular font for a button text in android?
我希望我的按鈕文本使用Copperplate Gothic Light字體,但我還沒有遇到過這樣的簡單功能的簡單干凈的代碼。 幫助!
PS:由於 android 自帶 ariel 和其他一些字體,我們需要導入(抱歉沒有更好的詞,因為我是新手)我們希望使用的字體。 這就是我迄今為止所能收集到的所有信息,這就是我的足跡結束的地方。
如果您打算為多個按鈕添加相同的字體,我建議您一直將其實現為樣式和子類按鈕:
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);
}
}
這是一個輔助類,用於根據 com.my.package:font 屬性在 TextView 上設置字體(請記住,Button 是 TextView 的子類):
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);
}
}
}
這是用於減少舊設備內存使用量的 FontCache:
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 中,我們定義了自定義樣式屬性
<?xml version="1.0" encoding="utf-8"?>
<resources>
<declare-styleable name="CustomFont">
<attr name="font" format="string"/>
</declare-styleable>
</resources>
最后在布局中使用示例:
<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>
這似乎是一項艱巨的工作,但是一旦您有幾個要更改字體的按鈕和文本字段,您就會感謝我。
1) 將您需要的字體作為 .ttf(例如 CopperplateGothicLight.ttf)文件獲取並將其放置在您項目的 /assets/ 目錄中
2)使用此代碼引用字體並將其設置為您的按鈕:
Typeface copperplateGothicLight = Typeface.createFromAsset(getAppContext().getAssets(), "CopperplateGothicLight.ttf");
yourButton.setTypeface(copperplateGothicLight);
經過多次研究,我最好的選擇是:
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);
}
}
然后使用第一個答案中的 fontCache : 內存泄漏使用自定義字體設置自定義字體
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;
}
}
更少的代碼和更多的安卓標准使用!
主活動.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;
}
}
活動_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" />
下載所需字體的鏈接: copperplate_gothic_light
把它放在你的資產文件夾中。
截屏:
我希望它會有所幫助!!
首先下載字體樣式的TTF文件,然后將其放入項目的assets
文件夾中。
您可以通過以下方式以編程方式設置它:
Typeface font_style = Typeface.createFromAsset(getAssets(), "yourcystomfontstyle.ttf");
yourbutton.setTypeface(font_style);
您可以使用如下所示的自定義按鈕類。將您的字體放在資產/字體文件夾中。
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);
}
}
現在您可以使用 xml 中的按鈕,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" />
試試這個。 對 EditTextViews、TextViews 也很有用。無論如何!
<your.namespace.app.FontButton
app:font="montserrat"
android:layout_width="wrap_content"
android:layout_height="wrap_content"/>
怎么可能? 這條路!
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,您的res
文件夾中有一個font_attrs.xml
:
<?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>
請注意,您只需要修改
FontManager
和font_attrs.xml
即可自定義您的字體!
您可以使用以下代碼。 只需根據您的要求替換 mTextFont() 方法中的字體名稱。
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);
}
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