feat: 优化代码

app/src/main/java/io/legado/app/help/CrashHandler.kt

@@ -9,8 +9,7 @@ import android.os.Looper
 import android.util.Log
 import android.widget.Toast
 import io.legado.app.service.TTSReadAloudService
-import java.io.File
-import java.io.FileOutputStream
+import io.legado.app.utils.FileUtils
 import java.io.PrintWriter
 import java.io.StringWriter
 import java.text.SimpleDateFormat
@@ -141,14 +140,10 @@ class CrashHandler : Thread.UncaughtExceptionHandler {
             val timestamp = System.currentTimeMillis()
             val time = format.format(Date())
             val fileName = "crash-$time-$timestamp.log"
-            val path = mContext?.externalCacheDir?.toString() + "/crash/"
-            val dir = File(path)
-            if (!dir.exists()) {
-                dir.mkdirs()
-            }
-            val fos = FileOutputStream(path + fileName)
-            fos.write(sb.toString().toByteArray())
-            fos.close()
+            mContext?.externalCacheDir?.let {
+                FileUtils.createFileIfNotExist(it, fileName, "crash")
+                    .writeText(sb.toString())
+            }
         }
     }