Avoid managing file and writes

Author: helin24

flutter-idea/src/io/flutter/logging/PluginLogHandler.java

@@ -5,12 +5,33 @@
  */
 package io.flutter.logging;
 
+import com.intellij.openapi.application.PathManager;
 import com.intellij.openapi.diagnostic.Logger;
 import org.jetbrains.annotations.NotNull;
 
+import java.io.File;
+import java.io.IOException;
+import java.util.logging.FileHandler;
+import java.util.logging.SimpleFormatter;
+
 public class PluginLogger {
+  private static final String LOG_FILE_NAME = "flutter.log";
+  private static final FileHandler fileHandler;
+  static {
+    final String logPath = PathManager.getLogPath();
+    try {
+      fileHandler = new FileHandler(logPath + File.separatorChar + LOG_FILE_NAME, 1024 * 1024, 1);
+    }
+    catch (IOException e) {
+      throw new RuntimeException(e);
+    }
+    System.setProperty("java.util.logging.SimpleFormatter.format",
+                       "%1$tF %1$tT %3$s [%4$-7s] %5$s %6$s %n");
+    fileHandler.setFormatter(new SimpleFormatter());
+  }
+
   public static Logger createLogger(@NotNull Class logClass) {
-    java.util.logging.Logger.getLogger(logClass.getName()).addHandler(new PluginLogHandler());
+    java.util.logging.Logger.getLogger(logClass.getName()).addHandler(fileHandler);
     return Logger.getInstance(logClass.getName());
   }
 }