Android应用自定义字体在实体设备上不显示的问题求助

我试过多种方法：布局里设置字体、创建Typeface动态设置、清理重建项目。字体在编辑器和模拟器里都正常显示，但在三星Galaxy Note 3实体机上就是不出来。

相关Java代码 #

package com.example.benkyoblobandroid;
import androidx.appcompat.app.AppCompatActivity;
import androidx.constraintlayout.widget.Group;
import android.content.Intent;
import android.graphics.Typeface;
import android.os.Bundle;
import android.view.View;
import android.widget.ImageButton;
import android.widget.TextView;

public class BlobView extends AppCompatActivity {

    ImageButton pet;
    Group infoGroup;
    ImageButton studyTimeButton;
    TextView HPLabel;
    TextView EXPLabel;
    TextView EXP;
    TextView lvl;
    Typeface pixelFont;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        HPLabel = (TextView) findViewById(R.id.HP);
        EXPLabel = (TextView) findViewById(R.id.EXPLabel);
        EXP = (TextView) findViewById(R.id.EXP);
        lvl = (TextView) findViewById(R.id.lvl);
        pixelFont = Typeface.createFromAsset(getAssets(),
                "font/fff_forward_regular");
        HPLabel.setTypeface(pixelFont);
        EXPLabel.setTypeface(pixelFont);
        EXP.setTypeface(pixelFont);
        lvl.setTypeface(pixelFont);
        pet = (ImageButton) findViewById(R.id.pet);
        infoGroup = (Group) findViewById(R.id.infoGroup);
        pet.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                infoGroup.setVisibility(infoGroup.getVisibility() == View.GONE ? View.VISIBLE : View.GONE);
            }
        });
        studyTimeButton = (ImageButton) findViewById(R.id.studyTimeButton);
        studyTimeButton.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                switchActivity(StudyTimeView.class);
            }
        });
    }

    void switchActivity(Class activity) {
        Intent activityIntent = new Intent(this, activity);
        startActivity(activityIntent);
    }
}

布局XML代码 #

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    xmlns:custom="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".BlobView">

    <ImageView
        android:id="@+id/background"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent"
        android:adjustViewBounds="true"
        android:scaleType="fitXY"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintDimensionRatio="1:2"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:srcCompat="@drawable/blob_room" />

    <ImageButton
        android:id="@+id/pet"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:background="@null"
        android:contentDescription="Pet"
        android:scaleType="fitCenter"
        app:layout_constraintDimensionRatio="1:1"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="@id/guideline2"
        app:srcCompat="@drawable/slimepet_pink" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/guideline2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintGuide_percent="0.40" />

    <ImageView
        android:id="@+id/info"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:layout_marginTop="147dp"
        android:adjustViewBounds="true"
        android:scaleType="fitCenter"
        app:layout_constraintDimensionRatio="2:1"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.0"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="@+id/background"
        app:srcCompat="@drawable/flashcard" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/guideline4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintGuide_percent="0.20" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/guideline3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintGuide_percent="0.50" />


    <androidx.constraintlayout.widget.Group
        android:id="@+id/infoGroup"
        android:layout_width="54dp"
        android:layout_height="7dp"
        android:visibility="visible"
        app:constraint_referenced_ids="info,infoText,EXPStar,lvl"
        tools:layout_editor_absoluteX="185dp"
        tools:layout_editor_absoluteY="246dp" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/leftInfoGuideline"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        app:layout_constraintGuide_percent="0.05" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/topInfoGuideline"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintGuide_percent="0.23" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/bottomInfoGuideline"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintGuide_percent="0.43" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/rightInfoGuideline"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        app:layout_constraintGuide_percent="0.90" />

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/midInfoGuideline"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintGuide_percent="0.31" />

    <LinearLayout
        android:id="@+id/infoText"
        android:layout_width="0dp"
        android:layout_height="0dp"
        android:orientation="vertical"
        android:paddingTop="10sp"
        app:layout_constraintBottom_toBottomOf="@id/bottomInfoGuideline"
        app:layout_constraintEnd_toEndOf="@id/rightInfoGuideline"
        app:layout_constraintStart_toStartOf="@id/leftInfoGuideline"
        app:layout_constraintTop_toTopOf="@id/topInfoGuideline">

        <LinearLayout
            android:id="@+id/happiness"
            android:layout_width="350sp"
            android:layout_height="50sp"
            android:orientation="horizontal"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintTop_toTopOf="@id/HP"
            app:layout_constraintDimensionRatio="2:1"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent">

            <TextView
                android:id="@+id/HP"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="@string/hp"
                android:textSize="30sp"
                android:fontFamily="@font/font"
            />

            <ImageView
                android:id="@+id/health1"
                android:layout_width="50sp"
                android:layout_height="50sp"
                android:adjustViewBounds="true"
                android:scaleType="fitCenter"
                app:layout_constraintDimensionRatio="1:1"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent"
                app:srcCompat="@drawable/health_empty" />

            <ImageView
                android:id="@+id/health2"
                android:layout_width="50sp"
                android:layout_height="50sp"
                android:adjustViewBounds="true"
                android:scaleType="fitCenter"
                app:layout_constraintDimensionRatio="1:1"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent"
                app:srcCompat="@drawable/health_empty" />

            <ImageView
                android:id="@+id/health3"
                android:layout_width="50sp"
                android:layout_height="50sp"
                android:adjustViewBounds="true"
                android:scaleType="fitCenter"
                app:layout_constraintDimensionRatio="1:1"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent"
                app:srcCompat="@drawable/health_empty" />

            <ImageView
                android:id="@+id/health4"
                android:layout_width="50sp"
                android:layout_height="50sp"
                android:adjustViewBounds="true"
                android:scaleType="fitCenter"
                app:layout_constraintDimensionRatio="1:1"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent"
                app:srcCompat="@drawable/health_empty" />

            <ImageView
                android:id="@+id/health5"
                android:layout_width="50sp"
                android:layout_height="50sp"
                android:adjustViewBounds="true"
                android:scaleType="fitCenter"
                app:layout_constraintDimensionRatio="1:1"
                app:layout_constraintEnd_toEndOf="parent"
                app:layout_constraintStart_toStartOf="parent"
                app:layout_constraintTop_toTopOf="parent"
                app:srcCompat="@drawable/health_empty" />
        </LinearLayout>

        <LinearLayout
            android:id="@+id/expInfo"
            android:layout_width="350sp"
            android:layout_height="100sp"
            android:orientation="horizontal"
            app:layout_constraintBottom_toBottomOf="@id/bottomInfoGuideline"
            app:layout_constraintDimensionRatio="2:1"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="@id/leftInfoGuideline"
            app:layout_constraintTop_toBottomOf="@id/happiness"
            app:layout_constraintTop_toTopOf="@id/midInfoGuideline">

            <TextView
                android:id="@+id/EXPLabel"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:fontFamily="@font/font"
                android:text="@string/exp"
                android:textSize="30sp"
            />

            <TextView
                android:id="@+id/EXP"
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:fontFamily="@font/font"
                android:text="@string/EXP"
                android:textSize="30sp"
            />

        </LinearLayout>
    </LinearLayout>

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/starStartGuideline"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        app:layout_constraintGuide_percent="0.55" />

    <ImageView
        android:id="@+id/EXPStar"
        android:layout_width="50sp"
        android:layout_height="50sp"
        android:adjustViewBounds="true"
        android:scaleType="fitCenter"
        app:layout_constraintDimensionRatio="1:1"
        app:layout_constraintStart_toStartOf="@id/starStartGuideline"
        app:layout_constraintTop_toTopOf="@id/midInfoGuideline"
        app:srcCompat="@drawable/exp_star" />

    <TextView
        android:id="@+id/lvl"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:fontFamily="@font/font"
        android:text="1"
        android:textColor="#FF0000"
        android:textSize="25sp"
        app:layout_constraintEnd_toEndOf="@id/EXPStar"
        app:layout_constraintStart_toStartOf="@id/EXPStar"
        app:layout_constraintTop_toTopOf="@id/EXPStar"
        />

    <LinearLayout
        android:layout_width="350sp"
        android:layout_height="70sp"
        app:layout_constraintTop_toTopOf="@id/iconsTop"
        app:layout_constraintStart_toStartOf="@id/leftInfoGuideline"
        app:layout_constraintEnd_toEndOf="@id/rightInfoGuideline">
        <ImageButton
            android:id="@+id/studyTimeButton"
            android:layout_width="50sp"
            android:layout_height="50sp"
            android:background="@null"
            android:scaleType="fitCenter"
            app:layout_constraintDimensionRatio="1:1"
            app:srcCompat="@drawable/ui_01_study_time_light_with_colored_shadow"
            tools:layout_editor_absoluteX="67dp"
            tools:layout_editor_absoluteY="102dp"
            android:contentDescription="Study Time"
            />
    </LinearLayout>

    <androidx.constraintlayout.widget.Guideline
        android:id="@+id/iconsTop"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        app:layout_constraintGuide_begin="20dp" />

</androidx.constraintlayout.widget.ConstraintLayout>

补充说明 #

• 编辑器预览：字体显示正常，文本样式符合预期
• 实体设备效果：字体未加载，显示系统默认字体
• 文件层级：字体文件放置在src/main/assets/font/目录下，文件名为fff_forward_regular

内容的提问来源于stack exchange，提问作者Sora Hirasawa