自定义TextView小部件的Android设置字体

Question

我写了简单的小部件作为textview与一些属性，我想为扩展的TextView类设置字体，如何做到这一点，我可以有这种能力？

atributes：

<resources> 
    <declare-styleable name="TextViewStyle"> 
     <attr name="selected_background" format="integer" /> 
     <attr name="font"    format="string" /> 
    </declare-styleable> 
</resources> 

定制的TextView小部件：

public class TextViewStyle extends TextView{ 

    public TextViewStyle(Context context) { 
     super(context); 
    } 
    public TextViewStyle(Context context, AttributeSet attrs) { 
     this(context, attrs, 0); 
    } 

    public TextViewStyle(Context context, AttributeSet attrs, int defStyle) { 
     super(context, attrs, defStyle); 
     TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.TextViewStyle, defStyle, 0); 

     a.recycle(); 
    } 
} 

简单的UI控件到XML：

<ir.jaziire.widgets.TextViewStyle 
    android:layout_width="fill_parent" 
    android:layout_height="fill_parent" 
    android:id="@+id/topic" 
    android:textColor="#000" 
    android:textSize="14dp" 
    android:gravity="right" 
    /> 

在这个widget我想设置app:font=""设置的任何字体资产

Answer 1

CustomTextView：

import android.content.Context; 
import android.content.res.TypedArray; 
import android.util.AttributeSet; 
import android.widget.TextView; 

import com.androidhub.R; 

public class CustomTextView extends TextView { 

    public CustomTextView(Context context, AttributeSet attrs, int defStyle) { 
     super(context, attrs, defStyle); 

     try { 
      TypedArray a = context.obtainStyledAttributes(attrs, 
        R.styleable.font, defStyle, 0); 

      String str = a.getString(R.styleable.font_fonttype); 
      a.recycle(); 
      switch (Integer.parseInt(str)) { 
      case 0: 
       str = "fonts/Trebuchet_MS.ttf"; 
       break; 
      default: 
       break; 
      } 

      setTypeface(FontManager.getInstance(getContext()).loadFont(str)); 

     } catch (Exception e) { 
      e.printStackTrace(); 
     } 
    } 

    public CustomTextView(Context context, AttributeSet attrs) { 
     this(context, attrs, 0); 
    } 

    @SuppressWarnings("unused") 
    private void internalInit(Context context, AttributeSet attrs) { 

    } 

FontManager：

import java.util.HashMap; 
import java.util.Map; 

import android.content.Context; 
import android.graphics.Typeface; 

public class FontManager { 

    private Map<String, Typeface> fontCache = new HashMap<String, Typeface>(); 
    private static FontManager instance = null; 
    private Context mContext; 

    private FontManager(Context mContext2) { 
     mContext = mContext2; 
    } 

    public synchronized static FontManager getInstance(Context mContext) { 

     if (instance == null) { 
      instance = new FontManager(mContext); 
     } 
     return instance; 
    } 

    public Typeface loadFont(String font) { 

     if (false == fontCache.containsKey(font)) { 
      fontCache.put(font, 
        Typeface.createFromAsset(mContext.getAssets(), font)); 
     } 
     return fontCache.get(font); 
    } 
} 

在attrs.xml文件：

<declare-styleable name="font"> 
     <attr name="fonttype"> 
      <enum name="trebuchet_ms" value="0" /> 
     </attr> 
    </declare-styleable> 

使用您CustomTextView在xml为：

声明这上面你xml

xmlns:custom="http://schemas.android.com/apk/res/com.androidhub" 

而且你可以用你的CustomTextView为：

<com.utils.CustomTextView 
       android:id="@+id/loadMap" 
       android:layout_width="match_parent" 
       android:layout_height="wrap_content" 
       android:layout_margin="5dp" 
       android:background="@drawable/custom_button_selector" 
       android:clickable="true" 
       android:ellipsize="marquee" 
       android:fadingEdge="horizontal" 
       android:gravity="center" 
       android:marqueeRepeatLimit="marquee_forever" 
       android:padding="10dp" 
       android:scrollHorizontally="true" 
       android:singleLine="true" 
       android:text="@string/load_map" 
       android:textColor="@color/home_buttons_selector" 
       android:textSize="16sp" 
       custom:fonttype="trebuchet_ms" /> 

确保您的正在把你的字体放在assests-->fonts-->YourFont

com.androidhub是我的包名称。

Answer 2

使用下面的代码：

import android.content.Context; 
import android.graphics.Typeface; 
import android.util.AttributeSet; 
import android.widget.TextView; 

public class MyTextView extends TextView { 

    public MyTextView(Context context) { 
     super(context); 
     createFont(); 
    } 

    public MyTextView(Context context, AttributeSet attr, int defStyle) { 
     super(context, attr, defStyle); 
     createFont(); 
    } 

    public MyTextView(Context context, AttributeSet attr) { 
     super(context, attr); 
     createFont(); 
    } 

    private void createFont() { 
     Typeface font = Typeface.createFromAsset(getContext().getAssets(), "SHRUTI.TTF"); 
     setTypeface(font); 
    } 
} 

Answer 3

我在我的项目中使用它可能会帮助你。

TextViewEx.java

public class TextViewEx extends TextView { 
public enum TextStyle {BOLD,LIGHT,REGULAR,SEMIBOLD,EXOREGULAR,BOLDLARGE}; 
    TypedArray Canvasattrs=null; 
    int CurvatureDegree; 
    boolean isCurvature = false; 
    String direction; 
    String RVal; 

    public TextViewEx(Context context, AttributeSet attrs) { 
     super(context, attrs); 
     init(context, attrs); 
    } 

    public TextViewEx(Context context, AttributeSet attrs, int defStyleAttr) { 
     super(context, attrs, defStyleAttr); 
     init(context, attrs); 
    } 

    private void init(Context context, AttributeSet attrs){ 

     if (!this.isInEditMode()) { // used for preview while designing. 
      TypedArray a = context.obtainStyledAttributes(attrs, R.styleable.TextView_TypeFace) 
      Typeface font = null; 
      String Type = a.getString(R.styleable.TextView_TypeFace_TypeFace); 
      if(Type == null){ 
       UserTypeFace.SetRegular(this); //Set Default Font if font is not defined in xml 
       return; 
      } 

      setStyle(Type); 

     } else { 
      setTypeface(Typeface.DEFAULT, Typeface.NORMAL); 
     } 
    } 



    private void setStyle(String style){ 
     TextStyle value = TextStyle.valueOf(style); //convert String to ENUM 
     switch (value){ 

      case BOLD:UserTypeFace.SetBold(this); 
       break; 
      case LIGHT:UserTypeFace.Setlight(this); 
       break; 
      case REGULAR:UserTypeFace.Setthin(this); 
       break; 
      case SEMIBOLD:UserTypeFace.SetSEMIBOLD(this); 
       break; 
      case EXOREGULAR:UserTypeFace.SetRegular(this); 
       break; 
      case BOLDLARGE:UserTypeFace.SetBoldLarge(this); 
       break; 
     } 

    } 
    } 

UserTypeFace.java

public class UserTypeFace { 
    public static final String BOLD; 
    public static final String LIGHT; 
    public static final String REGULAR; 
    public static final String EXOREGULAR; 
    public static final String BOLDLARGE; 
    public static final String SEMIBOLD; 

    static { 
     REGULAR="fonts/JosefinSans-Bold.ttf"; 
     LIGHT="fonts/JosefinSans-Bold.ttf"; 
     BOLD="fonts/JosefinSans-Bold.ttf"; 
     SEMIBOLD="fonts/JosefinSans-Bold.ttf"; 
     BOLDLARGE="fonts/JosefinSans-Bold.ttf"; 
     EXOREGULAR="fonts/Exo2-Regular.ttf"; 
    } 

     private static final Hashtable<String, Typeface> cache = new Hashtable<String, Typeface>(); 

     private static Typeface getTypeFace(Context context, String assetPath) { 
      synchronized (cache) { 
       if (!cache.containsKey(assetPath)) { 
        try { 
         Typeface typeFace = Typeface.createFromAsset(
           context.getAssets(), assetPath); 
         cache.put(assetPath, typeFace); 
        } catch (Exception e) { 
         Log.e("TypeFaces", "Typeface not loaded."); 
         return null; 
        } 
       } 
       return cache.get(assetPath); 
      } 
     } 

    public static void Setthin(TextView obj){ 
     obj.setTypeface(getTypeFace(obj.getContext(),EXOREGULAR), Typeface.NORMAL); 
    } 


    public static void Setlight(TextView obj){ 

     obj.setTypeface(getTypeFace(obj.getContext(),LIGHT), Typeface.NORMAL); 
    } 


    public static void SetBold(TextView obj){ 
     obj.setTypeface(getTypeFace(obj.getContext(),BOLD), Typeface.NORMAL); 
    } 

    public static void SetSEMIBOLD(TextView obj){ 
     obj.setTypeface(getTypeFace(obj.getContext(),SEMIBOLD), Typeface.NORMAL); 
    } 
    public static void SetRegular(TextView obj){ 
     obj.setTypeface(getTypeFace(obj.getContext(),EXOREGULAR), Typeface.NORMAL); 
    } 

    public static void SetBoldLarge(TextView obj){ 
     obj.setTypeface(getTypeFace(obj.getContext(),BOLDLARGE), Typeface.BOLD); 
    } 

    public static Typeface getRegular(View obj){ 
     return getTypeFace(obj.getContext(),EXOREGULAR); 
    } 
} 

添加这attrs.xml

<resources> 

    <declare-styleable name="TextView_TypeFace"> 
     <attr name="TypeFace" format="reference|string" localization="suggested" /> 

    </declare-styleable> 
</resources> 

，你会在布局文件中像

来增加这个

<pakage.name.TextViewEx 
       android:layout_width="wrap_content" 
       android:layout_height="wrap_content" 
       android:gravity="center" 
       android:layout_gravity="center" 
       android:layout_marginBottom="10dp" 
       android:textColor="#282828" 
       attrs:TypeFace="@string/Bold" 
       android:textSize="30sp" 
       android:text=" Please Login " 
       android:id="@+id/txtlogin" />