找不到Typeface.createFromFile文件？

Question

在此之前，我发布了一个问题，并获得了存储在Data / too.But /com.customfonts/Robotoo.ttf中的解决方案数据，但其搜索文件的路径错误，并抛出了Font not found /data/user/0/com.customfonts/files/Robottoo.ttf

Downloading file from url error " java.io.FileNotFoundException: /Users/Documents (No such file or directory)"，但是我面对的文件没有找到exception.Here，这是我的代码，我已经试过了。

   //  Storing file 
    private class DownloadingTask  extends AsyncTask<Void,Void,Void>{
    @Override
    protected Void doInBackground(Void... voids) {
        try {
            URL url = new URL(fonturl);
            HttpURLConnection c = (HttpURLConnection) url.openConnection();
            c.setRequestMethod("GET");
            c.connect();
            FileOutputStream fos = new FileOutputStream(new File(getFilesDir(),"Robotto.ttf"));
            Log.i("Download","complete");
            Log.i("File",getFilesDir().getAbsolutePath());
        ( I/File: /data/user/0/com.customfonts/files)//files stores under
            Log.i("FOS",""+fos.toString());

            InputStream is = c.getInputStream();
            byte[] buffer = new byte[1024];
            int len1 = 0;
            while ((len1 = is.read(buffer)) != -1) {
                fos.write(buffer, 0, len1);
            }
            fos.close();
            is.close();
        }
        catch (Exception e) {
            e.printStackTrace();
            outputFile = null;
            Log.e("Error", "Download Error Exception " + e.getMessage());
        }

        return null;
    }
}

 btnGETDATA.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
         String filename="Robottoo.ttf";
         getTypeface(filename);
         }
    });
   private Typeface getTypeface(String filename)
   {
     Typeface font;
        try
        {
            font = Typeface.createFromFile(getFilesDir().getAbsolutePath() +"/"+filename);
            Log.i("FOnt found",""+font);
           (java.lang.RuntimeException: Font not found /data/user/0/com.customfonts/files/Robotoo.ttf)
        }
        catch (Exception e)
        {
            e.printStackTrace();
            return null;
        }
        return  font;
   }

Font : /data/user/0/com.customfonts/files/Robottoo.ttf未找到java.lang.RuntimeException

Answer 1

尝试使用getFilesDir()的getExternalFilesDir()方法

getExternalFilesDir方法给出了你的应用程序私人文件夹目录的路径，你可以在这里存储你的ttf文件以获取更多信息，请查看this。

   File file = new File(context.getExternalFilesDir(Environment.DIRECTORY_PICTURES),filename);
   if (!file.mkdirs()) {
     Log.e(LOG_TAG, "Directory not created");
   }
   font = Typeface.createFromFile(file.getPath());

另一种方式-尝试此ContextWrapper.getFilesDir() check

Answer 2

你可以试试这种方式，

1.检查目录是否存在如果不存在，则创建目录

    File rootDirectory;
    PackageManager m = getPackageManager();
    String s = getPackageName();
    PackageInfo p = null;
    try {
        p = m.getPackageInfo(s, 0);
    } catch (PackageManager.NameNotFoundException e) {
        e.printStackTrace();
    }
    s = p.applicationInfo.dataDir;

    rootDirectory = new File(s + "/files");

    if (!rootDirectory.exists()) {
        rootDirectory.mkdir();
    }

    String FileName = "Robotto.ttf";
    String finalUrl = rootDirectory.getAbsolutePath() + "/" + FileName;

2.代码中的一些更改

 private class DownloadingTask  extends AsyncTask<Void,Void,Void> {
            @Override
            protected Void doInBackground(Void... voids) {
                try {
                    File rootDirectory = null;
                    URL url = new URL(fonturl);
                    HttpURLConnection c = (HttpURLConnection) url.openConnection();
                    c.setRequestMethod("GET");
                    c.connect();
                    FileOutputStream fos = new FileOutputStream(finalUrl);
                  //  Log.i("Download","complete");
                   // Log.i("File",getFilesDir().getAbsolutePath());
                  //  ( I/File: /data/user/0/com.customfonts/files)//files stores under
                   // Log.i("FOS",""+fos.toString());

                    InputStream is = c.getInputStream();
                    byte[] buffer = new byte[1024];
                    int len1 = 0;
                    while ((len1 = is.read(buffer)) != -1) {
                        fos.write(buffer, 0, len1);
                    }
                    fos.close();
                    is.close();
                }
                catch (Exception e) {
                    e.printStackTrace();
                    outputFile = null;
                    Log.e("Error", "Download Error Exception " + e.getMessage());
                }

                return null;
            }
        }

        btnGETDATA.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
               // String filename="Robottoo.ttf";
                getTypeface(finalUrl);
            }
        });
        private Typeface getTypeface(String finalUrl)
        {
            Typeface font;
            try
            {
                font = Typeface.createFromFile(finalUrl);
              //  Log.i("FOnt found",""+font);
              //  (java.lang.RuntimeException: Font not found /data/user/0/com.customfonts/files/Robotoo.ttf)
            }
            catch (Exception e)
            {
                e.printStackTrace();
                return null;
            }
            return  font;
        }

我希望这能对你有所帮助。

更新1:

检查一次你的文件名“Robotto.ttf” this is different name。

btnGETDATA.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
         String filename="Robottoo.ttf";
         getTypeface(filename);
         }
    });

你应该使用

btnGETDATA.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
         String filename="Robotto.ttf";
         getTypeface(filename);
         }
    });

更新2:

检查您的应用程序是否具有"WRITE_EXTERNAL_STORAGE"权限。

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

有关更多详细信息，请访问抛出的Write a file in external storage in Android

更新3：(只需复制并粘贴代码即可)

1. WriteSDCard.java

    import android.Manifest;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.graphics.Typeface;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.os.Environment;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.widget.TextView;
import android.widget.Toast;

import java.io.File;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;

public class WriteSDCard extends AppCompatActivity {

    String finalUrl;
    private TextView tv;
    private String fonturl= "http://github.com/google/fonts/blob/master/apache/roboto/Roboto-Regular.ttf?raw=true";

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        if(isStoragePermissionGranted()){
            checkExternalMedia();
            writeToFile();

            new DownloadingTask().execute();
        }


    }

    private void checkExternalMedia(){
        boolean mExternalStorageAvailable = false;
        boolean mExternalStorageWriteable = false;
        String state = Environment.getExternalStorageState();

        if (Environment.MEDIA_MOUNTED.equals(state)) {
            // Can read and write the media
            mExternalStorageAvailable = mExternalStorageWriteable = true;
        } else if (Environment.MEDIA_MOUNTED_READ_ONLY.equals(state)) {
            // Can only read the media
            mExternalStorageAvailable = true;
            mExternalStorageWriteable = false;
        } else {
            // Can't read or write
            mExternalStorageAvailable = mExternalStorageWriteable = false;
        }
        tv.append("\n\nExternal Media: readable="
                +mExternalStorageAvailable+" writable="+mExternalStorageWriteable);
    }

    private void writeToFile(){

        File rootDirectory;
        PackageManager m = getPackageManager();
        String s = getPackageName();
        PackageInfo p = null;
        try {
            p = m.getPackageInfo(s, 0);
        } catch (PackageManager.NameNotFoundException e) {
            e.printStackTrace();
        }
        s = p.applicationInfo.dataDir;

        rootDirectory = new File(s + "/files");

        if (!rootDirectory.exists()) {
            rootDirectory.mkdir();
        }

        String FileName = "Roboto-Regular.ttf";
        finalUrl= rootDirectory.getAbsolutePath() + "/" + FileName;
    }

    private class DownloadingTask  extends AsyncTask<Void,Void,Void> {
        @Override
        protected Void doInBackground(Void... voids) {
            try {
                URL url = new URL(fonturl);
                HttpURLConnection c = (HttpURLConnection)url.openConnection();
                c.setRequestMethod("GET");
                c.connect();
                FileOutputStream fos = new FileOutputStream(finalUrl); // File you want to save to, It creates Roboto-Regular.ttf in your Internal Storage you got from "getFilesDir() method
                Log.i("Download","complete");
                InputStream is = c.getInputStream();
                byte[] buffer = new byte[1024];
                int len1 = 0;
                while ((len1 = is.read(buffer)) != -1) {
                    fos.write(buffer, 0, len1);
                }
                fos.close();
                is.close();
            }
            catch (Exception e) {
                e.printStackTrace();
               // outputFile = null;
                Log.e("Error", "Download Error Exception " + e.getMessage());
            }

            return null;
        }

        @Override
        protected void onPostExecute(Void aVoid) {
          //  super.onPostExecute(aVoid);

            File file = new File(finalUrl);
            if(file.exists()) {
                //something,
                Toast.makeText(WriteSDCard.this,"File exists",Toast.LENGTH_SHORT).show();
                /**
                 *
                 */
                getTypeface();

            }
            else{
               //something
                Toast.makeText(WriteSDCard.this,"File Not exists",Toast.LENGTH_SHORT).show();

            }
        }
    }

    private Typeface getTypeface()
    {
        Typeface font;
        try
        {
            font = Typeface.createFromFile(finalUrl);
            Log.i("Font found",""+font);
         }
        catch (Exception e)
        {
            e.printStackTrace();
            return null;
        }
        return  font;
    }

    public  boolean isStoragePermissionGranted() {
        if (Build.VERSION.SDK_INT >= 23) {
            if (checkSelfPermission(android.Manifest.permission.WRITE_EXTERNAL_STORAGE)
                    == PackageManager.PERMISSION_GRANTED) {
               // Log.v(TAG,"Permission is granted");
                return true;
            } else {

               // Log.v(TAG,"Permission is revoked");
                ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 1);
                return false;
            }
        }
        else { //permission is automatically granted on sdk<23 upon installation
           // Log.v(TAG,"Permission is granted");
            return true;
        }
    }

    @Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions, int[] grantResults) {
        super.onRequestPermissionsResult(requestCode, permissions, grantResults);
        if(grantResults[0]== PackageManager.PERMISSION_GRANTED){
           // Log.v(TAG,"Permission: "+permissions[0]+ "was "+grantResults[0]);
            //resume tasks needing this permission
        }
    }

}

2.清单文件

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="example.download_fontform_url">

    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="android.permission.INTERNET"/>

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".WriteSDCard">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>

</manifest>

Answer 3

在应用程序级别的层次结构中创建assets文件夹，并将.ttf字体文件粘贴到其中。

并使用此代码来应用字体

Typeface face = Typeface.createFromAsset(getAssets(), "font.ttf");
textview.setTypeface(face);