Android 更改editText提示的字体

是否可以更改

EditText

字段中显示的提示的字体？我想在xml本身中设置字体。

这在xml中是不可能的-

---

文本和提示在XML中只能具有相同的字体。

我还没有找到任何有用的方法来更改XML中的提示字体。但您可以实现如下目的：

mEt.addTextChangedListener(new TextWatcher() {
    @Override
    public void beforeTextChanged(CharSequence s, int start, int count, int after) {

    }

    @Override
    public void onTextChanged(CharSequence s, int start, int before, int count) {
        if(s.length()== 0) {
            //mEt.setTypeFace(normalFont);
        }else{
           // mEt.setTypeFace(hintFont);
        }
    }

    @Override
    public void afterTextChanged(Editable s) {
    }
});

---

您可以使用一个SpannableString和一个自定义字体span来更改它

首先，创建一个自定义TypefaceSpan类：

public class CustomTypefaceSpan extends TypefaceSpan {
    private final Typeface mNewType;

    public CustomTypefaceSpan(Typeface type) {
        super("");
        mNewType = type;
    }

    public CustomTypefaceSpan(String family, Typeface type) {
        super(family);
        mNewType = type;
    }

    @Override
    public void updateDrawState(TextPaint ds) {
        applyCustomTypeFace(ds, mNewType);
    }

    @Override
    public void updateMeasureState(TextPaint paint) {
        applyCustomTypeFace(paint, mNewType);
    }

    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);
    }
}

然后只需将字体span设置为SpannableString：

TypefaceSpan typefaceSpan = new CustomTypefaceSpan(typeface);
SpannableString spannableString = new SpannableString(hintText);

spannableString.setSpan(typefaceSpan, 0, spannableString.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);

最后，只需设置EditText的提示：

mEditText.setHint(spannableString);

---

有一个非常简单的方法。我只是在我的应用程序中这样做了，它工作了。 该键与EditText一起设置TextInputLayout的Facetype

mEmailView.setTypeface(Typeface.createFromAsset(getAssets(), getString(R.string.app_font)));
((TextInputLayout) findViewById(R.id.tilEmail)).setTypeface(Typeface.createFromAsset(getAssets(), getString(R.string.app_font)));

---

我可以用这个来改变提示字体

---

编译库后，必须创建一个应用程序类，并使用以下命令创建类定义：

CalligraphyConfig.initDefault(new CalligraphyConfig.Builder()
                  .setDefaultFontPath("font.ttf")
                  .setFontAttrId(R.attr.fontPath)
                  .build()
          );

@Override
      protected void attachBaseContext(Context newBase) {
          super.attachBaseContext(CalligraphyContextWrapper.wrap(newBase));
      }

在每个要覆盖的活动之后，请使用以下命令：

CalligraphyConfig.initDefault(new CalligraphyConfig.Builder()
                  .setDefaultFontPath("font.ttf")
                  .setFontAttrId(R.attr.fontPath)
                  .build()
          );

@Override
      protected void attachBaseContext(Context newBase) {
          super.attachBaseContext(CalligraphyContextWrapper.wrap(newBase));
      }

---

@francisco_ssb的答案是正确的。但是，我将提供一个替代解决方案，它不仅可以帮助更改提示的字体，还可以更改提示的大小和样式。我希望这个解决方案会有所帮助

1）创建自定义

提示

对象：

import android.graphics.Typeface;
import android.text.SpannableString;
import android.text.Spanned;
import android.text.style.MetricAffectingSpan;

public class CustomHint extends SpannableString
{
    public CustomHint(final CharSequence source, final int style)
    {
        this(null, source, style, null);
    }

    public CustomHint(final CharSequence source, final Float size)
    {
        this(null, source, size);
    }

    public CustomHint(final CharSequence source, final int style, final Float size)
    {
        this(null, source, style, size);
    }

    public CustomHint(final Typeface typeface, final CharSequence source, final int style)
    {
        this(typeface, source, style, null);
    }

    public CustomHint(final Typeface typeface, final CharSequence source, final Float size)
    {
        this(typeface, source, null, size);
    }

    public CustomHint(final Typeface typeface, final CharSequence source, final Integer style, final Float size)
    {
        super(source);

        MetricAffectingSpan typefaceSpan = new CustomMetricAffectingSpan(typeface, style, size);
        setSpan(typefaceSpan, 0, source.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
    }
}

import android.graphics.Typeface;
import android.text.TextPaint;
import android.text.style.MetricAffectingSpan;

public class CustomMetricAffectingSpan extends MetricAffectingSpan
{
    private final Typeface _typeface;
    private final Float    _newSize;
    private final Integer  _newStyle;

    public CustomMetricAffectingSpan(Float size)
    {
        this(null, null, size);
    }

    public CustomMetricAffectingSpan(Float size, Integer style)
    {
        this(null, style, size);
    }

    public CustomMetricAffectingSpan(Typeface type, Integer style, Float size)
    {
        this._typeface = type;
        this._newStyle = style;
        this._newSize = size;
    }

    @Override
    public void updateDrawState(TextPaint ds)
    {
        applyNewSize(ds);
    }

    @Override
    public void updateMeasureState(TextPaint paint)
    {
        applyNewSize(paint);
    }

    private void applyNewSize(TextPaint paint)
    {
        if (this._newStyle != null)
            paint.setTypeface(Typeface.create(this._typeface, this._newStyle));
        else
            paint.setTypeface(this._typeface);

        if (this._newSize != null)
            paint.setTextSize(this._newSize);
    }
}

Typeface newTypeface = Typeface.createFromAsset(getAssets(), "AguafinaScript-Regular.ttf");
CustomHint customHint = new CustomHint(newTypeface, "Enter some text", Typeface.BOLD_ITALIC, 60f);
        //        CustomHint customHint = new CustomHint(newTypeface, "Enter some text", Typeface.BOLD_ITALIC);
        //        CustomHint customHint = new CustomHint(newTypeface, "Enter some text", 60f);
        //        CustomHint customHint = new CustomHint("Enter some text", Typeface.BOLD_ITALIC, 60f);
        //        CustomHint customHint = new CustomHint("Enter some text", Typeface.BOLD_ITALIC);
        //        CustomHint customHint = new CustomHint("Enter some text", 60f);

customEditText.setHint(customHint);

2）创建自定义

MetricAffectingSpan

对象：

import android.graphics.Typeface;
import android.text.SpannableString;
import android.text.Spanned;
import android.text.style.MetricAffectingSpan;

public class CustomHint extends SpannableString
{
    public CustomHint(final CharSequence source, final int style)
    {
        this(null, source, style, null);
    }

    public CustomHint(final CharSequence source, final Float size)
    {
        this(null, source, size);
    }

    public CustomHint(final CharSequence source, final int style, final Float size)
    {
        this(null, source, style, size);
    }

    public CustomHint(final Typeface typeface, final CharSequence source, final int style)
    {
        this(typeface, source, style, null);
    }

    public CustomHint(final Typeface typeface, final CharSequence source, final Float size)
    {
        this(typeface, source, null, size);
    }

    public CustomHint(final Typeface typeface, final CharSequence source, final Integer style, final Float size)
    {
        super(source);

        MetricAffectingSpan typefaceSpan = new CustomMetricAffectingSpan(typeface, style, size);
        setSpan(typefaceSpan, 0, source.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
    }
}

import android.graphics.Typeface;
import android.text.TextPaint;
import android.text.style.MetricAffectingSpan;

public class CustomMetricAffectingSpan extends MetricAffectingSpan
{
    private final Typeface _typeface;
    private final Float    _newSize;
    private final Integer  _newStyle;

    public CustomMetricAffectingSpan(Float size)
    {
        this(null, null, size);
    }

    public CustomMetricAffectingSpan(Float size, Integer style)
    {
        this(null, style, size);
    }

    public CustomMetricAffectingSpan(Typeface type, Integer style, Float size)
    {
        this._typeface = type;
        this._newStyle = style;
        this._newSize = size;
    }

    @Override
    public void updateDrawState(TextPaint ds)
    {
        applyNewSize(ds);
    }

    @Override
    public void updateMeasureState(TextPaint paint)
    {
        applyNewSize(paint);
    }

    private void applyNewSize(TextPaint paint)
    {
        if (this._newStyle != null)
            paint.setTypeface(Typeface.create(this._typeface, this._newStyle));
        else
            paint.setTypeface(this._typeface);

        if (this._newSize != null)
            paint.setTextSize(this._newSize);
    }
}

Typeface newTypeface = Typeface.createFromAsset(getAssets(), "AguafinaScript-Regular.ttf");
CustomHint customHint = new CustomHint(newTypeface, "Enter some text", Typeface.BOLD_ITALIC, 60f);
        //        CustomHint customHint = new CustomHint(newTypeface, "Enter some text", Typeface.BOLD_ITALIC);
        //        CustomHint customHint = new CustomHint(newTypeface, "Enter some text", 60f);
        //        CustomHint customHint = new CustomHint("Enter some text", Typeface.BOLD_ITALIC, 60f);
        //        CustomHint customHint = new CustomHint("Enter some text", Typeface.BOLD_ITALIC);
        //        CustomHint customHint = new CustomHint("Enter some text", 60f);

customEditText.setHint(customHint);

3）使用：

import android.graphics.Typeface;
import android.text.SpannableString;
import android.text.Spanned;
import android.text.style.MetricAffectingSpan;

public class CustomHint extends SpannableString
{
    public CustomHint(final CharSequence source, final int style)
    {
        this(null, source, style, null);
    }

    public CustomHint(final CharSequence source, final Float size)
    {
        this(null, source, size);
    }

    public CustomHint(final CharSequence source, final int style, final Float size)
    {
        this(null, source, style, size);
    }

    public CustomHint(final Typeface typeface, final CharSequence source, final int style)
    {
        this(typeface, source, style, null);
    }

    public CustomHint(final Typeface typeface, final CharSequence source, final Float size)
    {
        this(typeface, source, null, size);
    }

    public CustomHint(final Typeface typeface, final CharSequence source, final Integer style, final Float size)
    {
        super(source);

        MetricAffectingSpan typefaceSpan = new CustomMetricAffectingSpan(typeface, style, size);
        setSpan(typefaceSpan, 0, source.length(), Spanned.SPAN_INCLUSIVE_EXCLUSIVE);
    }
}

import android.graphics.Typeface;
import android.text.TextPaint;
import android.text.style.MetricAffectingSpan;

public class CustomMetricAffectingSpan extends MetricAffectingSpan
{
    private final Typeface _typeface;
    private final Float    _newSize;
    private final Integer  _newStyle;

    public CustomMetricAffectingSpan(Float size)
    {
        this(null, null, size);
    }

    public CustomMetricAffectingSpan(Float size, Integer style)
    {
        this(null, style, size);
    }

    public CustomMetricAffectingSpan(Typeface type, Integer style, Float size)
    {
        this._typeface = type;
        this._newStyle = style;
        this._newSize = size;
    }

    @Override
    public void updateDrawState(TextPaint ds)
    {
        applyNewSize(ds);
    }

    @Override
    public void updateMeasureState(TextPaint paint)
    {
        applyNewSize(paint);
    }

    private void applyNewSize(TextPaint paint)
    {
        if (this._newStyle != null)
            paint.setTypeface(Typeface.create(this._typeface, this._newStyle));
        else
            paint.setTypeface(this._typeface);

        if (this._newSize != null)
            paint.setTextSize(this._newSize);
    }
}

Typeface newTypeface = Typeface.createFromAsset(getAssets(), "AguafinaScript-Regular.ttf");
CustomHint customHint = new CustomHint(newTypeface, "Enter some text", Typeface.BOLD_ITALIC, 60f);
        //        CustomHint customHint = new CustomHint(newTypeface, "Enter some text", Typeface.BOLD_ITALIC);
        //        CustomHint customHint = new CustomHint(newTypeface, "Enter some text", 60f);
        //        CustomHint customHint = new CustomHint("Enter some text", Typeface.BOLD_ITALIC, 60f);
        //        CustomHint customHint = new CustomHint("Enter some text", Typeface.BOLD_ITALIC);
        //        CustomHint customHint = new CustomHint("Enter some text", 60f);

customEditText.setHint(customHint);

使用此代码：

edittext.setAccentTypeface(typeface);

Android8.0（API级别26）提供了一个新功能，可以根据EditText中显示的提示更改xml字体。指南基于

步骤：

1）创建新的资源目录：右键单击res文件夹并转到new->Android资源目录

2）将资源目录的名称设置为font

3）在资源类型列表中，选择字体，然后单击确定

4）在font文件夹中添加自定义字体（例如my_font.ttf）

5）在布局XML中，将fontFamily属性设置为字体文件：

<EditText
    android:id="@+id/edit_text"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:fontFamily="@font/my_font"/>

要在运行Android 4.1（API级别16）及更高版本的设备上使用XML字体功能，请使用支持库26：

注意：当您通过支持库在XML布局中声明字体系列时，请使用应用程序命名空间以确保字体加载

1）在font目录中创建自定义字体.xml

<?xml version="1.0" encoding="utf-8"?>
<font-family xmlns:app="http://schemas.android.com/apk/res-auto">
    <font app:fontStyle="normal" app:fontWeight="400" app:font="@font/my_font"/>
</font-family>

---

采用使用文本输入布局并在其中放置文本输入编辑文本的方法

 <com.google.android.material.textfield.TextInputLayout
    android:id="@+id/text_input_layout_Til">

   <com.google.android.material.textfield.TextInputEditText
      android:id="@+id/editText"/>

 </com.google.android.material.textfield.TextInputLayout>

在片段/活动上，将提示所需的字体设置到TextInputLayout（text\u input\u layout\u Til） 然后在编辑文本（editText）上也设置字体/ 如果执行此操作，用户将输入的文本和提示将在Kotlin中使用不同的字体：

            nomeEditText.setText("New Text") //changes the text
            nomeEditText.isEnabled = false //disables editable
            nomeEditText.setBackgroundColor(Color.parseColor("#ffffff")) //changes background
            nomeEditText.setTextColor(Color.parseColor("#737373")) //changes color text
            nomeEditText.setTextSize(TypedValue.COMPLEX_UNIT_SP,28f) //changes text size
            nomeEditText.typeface = Typeface.create("@font/roboto", Typeface.BOLD) //changes font familly
            nomeEditText.gravity = Gravity.CENTER_HORIZONTAL //centralize

---

可能重复：正如所指出的，这是一个重复。您可以更改提示颜色，但不能更改字体。您可以检查我的答案，希望它有效。这对我来说是正确的答案，谢谢@francisco_ssb。它工作得很好。跨度的使用太棒了！在我的例子中，我不需要真正的“自定义字体”，只需要一个与常规文本不同的系统字体和外观。我在提示中使用了TextAppearanceSpan，它就像一个符咒一样工作。但是，这种方法不会浮动当前提示。有没有建议如何使其浮动到上述字段@LisaWray@mochadwi您所想到的“浮动”可能是TextInputLayout的一种效果，TextInputLayout是EditText的一种材料设计包装。我现在在手机上，但只有谷歌：）我明白了，所以，有了这段代码，再加上TextInputLayout上的提示，应该可以做到吗*cmiiw@lisawray编译库后，必须创建一个应用程序类和以下命令的类定义：CalligraphyConfig.initDefault（new CalligraphyConfig.Builder（）.setDefaultFontPath（“font.ttf”）.setFontAttrId（R.attr.fontPath.build（））；在您希望使用以下命令覆盖它的每个活动之后：@Override protected void attachBaseContext（Context-newBase）{super.attachBaseContext（CalligraphyContextWrapper.wrap（newBase））；}@johnny5，这个答案在我使用这个答案所指的书法库时对我有帮助。HOSHYAR Ahmadpour也解释了答案。谢谢你的回答HOSHYAR Ahmadpour。@Sakiboy是的，那很好，我在审查队列中保证未来的人能够使用这个答案，在他修正了答案简单的解决方案后，我给了他更高的票数，这是应该的be@Dariuslol实际上看起来没有更好的了…这不适用于EditText。