diff --git a/app/src/main/java/com/stardust/scriptdroid/ui/floating/CircularMenu.java b/app/src/main/java/com/stardust/scriptdroid/ui/floating/CircularMenu.java
index 815be886..ef8a59a5 100644
--- a/app/src/main/java/com/stardust/scriptdroid/ui/floating/CircularMenu.java
+++ b/app/src/main/java/com/stardust/scriptdroid/ui/floating/CircularMenu.java
@@ -80,19 +80,15 @@ public class CircularMenu implements Recorder.OnStateChangedListener {
     }
 
     private void setupListeners() {
-        mWindow.setOnActionViewClickListener(new View.OnClickListener() {
-            @Override
-            public void onClick(View v) {
-                if (mState == STATE_RECORDING) {
-                    stopRecord();
-                } else if (mWindow.isExpanded()) {
-                    mWindow.collapse();
-                } else {
-                    AutoJs.getInstance().getLayoutInspector().captureCurrentWindow();
-                    mWindow.expand();
-                }
+        mWindow.setOnActionViewClickListener(v -> {
+            if (mState == STATE_RECORDING) {
+                stopRecord();
+            } else if (mWindow.isExpanded()) {
+                mWindow.collapse();
+            } else {
+                AutoJs.getInstance().getLayoutInspector().captureCurrentWindow();
+                mWindow.expand();
             }
-
         });
     }
 
@@ -130,12 +126,7 @@ public class CircularMenu implements Recorder.OnStateChangedListener {
                 .customView(listView, false)
                 .positiveText(R.string.cancel)
                 .build();
-        listView.setOnItemOperatedListener(new ScriptListView.OnItemOperatedListener() {
-            @Override
-            public void OnItemOperated(ScriptFile file) {
-                dialog.dismiss();
-            }
-        });
+        listView.setOnItemOperatedListener(file -> dialog.dismiss());
         DialogUtils.showDialog(dialog);
     }
 
diff --git a/app/src/main/java/com/stardust/scriptdroid/ui/main/scripts/ScriptListView.java b/app/src/main/java/com/stardust/scriptdroid/ui/main/scripts/ScriptListView.java
index 1db73ba7..1a763414 100644
--- a/app/src/main/java/com/stardust/scriptdroid/ui/main/scripts/ScriptListView.java
+++ b/app/src/main/java/com/stardust/scriptdroid/ui/main/scripts/ScriptListView.java
@@ -307,7 +307,6 @@ public class ScriptListView extends SwipeRefreshLayout implements SwipeRefreshLa
         @Override
         public void onBindViewHolder(BindableViewHolder<?> holder, int position) {
             int positionOfCategoryFile = positionOfCategoryFile();
-            Log.d(LOG_TAG, String.format("view holder = %s, pos = %d, posOfCategory = %d, size = %d", holder.getClass().toString(), position, positionOfCategoryFile, mScriptList.count()));
             BindableViewHolder bindableViewHolder = (BindableViewHolder) holder;
             if (position == positionOfCategoryDir || position == positionOfCategoryFile) {
                 // FIXME: 2017/10/20 java.lang.ClassCastException: java.lang.Boolean cannot be cast to com.stardust.scriptdroid.model.script.ScriptFile
@@ -323,17 +322,14 @@ public class ScriptListView extends SwipeRefreshLayout implements SwipeRefreshLa
 
         @Override
         public int getItemViewType(int position) {
-            int viewType;
             int positionOfCategoryFile = positionOfCategoryFile();
             if (position == positionOfCategoryDir || position == positionOfCategoryFile) {
-                viewType = VIEW_TYPE_CATEGORY;
+                return VIEW_TYPE_CATEGORY;
             } else if (position < positionOfCategoryFile) {
-                viewType = VIEW_TYPE_DIRECTORY;
+                return VIEW_TYPE_DIRECTORY;
             } else {
-                viewType = VIEW_TYPE_FILE;
+                return VIEW_TYPE_FILE;
             }
-            Log.d(LOG_TAG, String.format("view type = %d, pos = %d, posOfCategory = %d, size = %d", viewType, position, positionOfCategoryFile, mScriptList.count()));
-            return viewType;
         }
 
         @Override
diff --git a/app/src/test/java/com/stardust/scriptdroid/ExampleUnitTest.java b/app/src/test/java/com/stardust/scriptdroid/ExampleUnitTest.java
index a479ada1..0c2a9962 100644
--- a/app/src/test/java/com/stardust/scriptdroid/ExampleUnitTest.java
+++ b/app/src/test/java/com/stardust/scriptdroid/ExampleUnitTest.java
@@ -3,6 +3,8 @@ package com.stardust.scriptdroid;
 import org.junit.Test;
 
 import java.util.concurrent.Callable;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 import io.reactivex.Observable;
 import io.reactivex.annotations.NonNull;
@@ -20,28 +22,10 @@ public class ExampleUnitTest {
 
     @Test
     public void test() {
-        Observable.fromCallable(new Callable<String>() {
-            @Override
-            public String call() throws Exception {
-                System.out.println(Thread.currentThread());
-                return "";
-            }
-        })
-                .subscribeOn(Schedulers.io())
-                .observeOn(Schedulers.newThread())
-                .doOnComplete(new Action() {
-                    @Override
-                    public void run() throws Exception {
-                        System.out.println(Thread.currentThread());
-                    }
-                })
-                .observeOn(Schedulers.newThread())
-                .subscribe(new Consumer<String>() {
-                    @Override
-                    public void accept(@NonNull String s) throws Exception {
-                        System.out.println(Thread.currentThread());
-                    }
-                });
+        Matcher matcher = Pattern.compile("[0-9]+").matcher("2937Finish!");
+        if (matcher.find()) {
+            System.out.println(matcher.group());
+        }
     }
 
     @Test
diff --git a/autojs/src/main/java/com/stardust/autojs/core/console/StardustConsole.java b/autojs/src/main/java/com/stardust/autojs/core/console/StardustConsole.java
index 1045f271..c1462d2f 100644
--- a/autojs/src/main/java/com/stardust/autojs/core/console/StardustConsole.java
+++ b/autojs/src/main/java/com/stardust/autojs/core/console/StardustConsole.java
@@ -14,6 +14,7 @@ import com.stardust.enhancedfloaty.FloatyService;
 import com.stardust.enhancedfloaty.ResizableExpandableFloatyWindow;
 import com.stardust.util.UiHandler;
 
+import java.lang.ref.WeakReference;
 import java.util.ArrayList;
 import java.util.concurrent.ArrayBlockingQueue;
 import java.util.concurrent.BlockingQueue;
@@ -67,7 +68,7 @@ public class StardustConsole extends AbstractConsole {
     private LogListener mLogListener;
     private UiHandler mUiHandler;
     private BlockingQueue<String> mInput = new ArrayBlockingQueue<>(1);
-    private ConsoleView mConsoleView;
+    private WeakReference<ConsoleView> mConsoleView;
     private volatile boolean mShown = false;
 
     public StardustConsole(UiHandler uiHandler) {
@@ -88,7 +89,7 @@ public class StardustConsole extends AbstractConsole {
     }
 
     public void setConsoleView(ConsoleView consoleView) {
-        mConsoleView = consoleView;
+        mConsoleView = new WeakReference<>(consoleView);
         setLogListener(consoleView);
         synchronized (this) {
             this.notify();
@@ -177,13 +178,13 @@ public class StardustConsole extends AbstractConsole {
 
     @ScriptInterface
     public String rawInput() {
-        if (mConsoleView == null) {
+        if (mConsoleView == null || mConsoleView.get() == null) {
             if (!mShown) {
                 show();
             }
             waitForConsoleView();
         }
-        mConsoleView.showEditText();
+        mConsoleView.get().showEditText();
         try {
             return mInput.take();
         } catch (InterruptedException e) {
diff --git a/autojs/src/main/java/com/stardust/autojs/core/record/inputevent/InputEventToAutoFileRecorder.java b/autojs/src/main/java/com/stardust/autojs/core/record/inputevent/InputEventToAutoFileRecorder.java
index 8245cdc4..6fd9c6e1 100644
--- a/autojs/src/main/java/com/stardust/autojs/core/record/inputevent/InputEventToAutoFileRecorder.java
+++ b/autojs/src/main/java/com/stardust/autojs/core/record/inputevent/InputEventToAutoFileRecorder.java
@@ -56,7 +56,7 @@ public class InputEventToAutoFileRecorder extends InputEventRecorder {
     public void recordInputEvent(@NonNull InputEventObserver.InputEvent event) {
         try {
             convertEventOrThrow(event);
-            //Log.d(LOG_TAG, "recordInputEvent: " + event);
+            Log.d(LOG_TAG, "recordInputEvent: " + event);
         } catch (IOException e) {
             e.printStackTrace();
         }
diff --git a/autojs/src/main/java/com/stardust/autojs/engine/RootAutomatorEngine.java b/autojs/src/main/java/com/stardust/autojs/engine/RootAutomatorEngine.java
index 05c53635..347fb089 100644
--- a/autojs/src/main/java/com/stardust/autojs/engine/RootAutomatorEngine.java
+++ b/autojs/src/main/java/com/stardust/autojs/engine/RootAutomatorEngine.java
@@ -3,14 +3,23 @@ package com.stardust.autojs.engine;
 import android.content.Context;
 import android.preference.PreferenceManager;
 import android.util.Log;
+import android.util.Patterns;
 
 import com.stardust.autojs.runtime.api.AbstractShell;
 import com.stardust.autojs.runtime.api.ProcessShell;
 import com.stardust.autojs.core.inputevent.InputDevices;
+import com.stardust.autojs.runtime.exception.ScriptException;
+import com.stardust.autojs.runtime.exception.ScriptInterruptedException;
 import com.stardust.autojs.script.AutoFileSource;
 import com.stardust.pio.PFiles;
 
+import java.io.BufferedReader;
+import java.io.DataOutputStream;
 import java.io.File;
+import java.io.IOException;
+import java.io.InputStreamReader;
+import java.util.regex.Matcher;
+import java.util.regex.Pattern;
 
 /**
  * Created by Stardust on 2017/8/1.
@@ -22,6 +31,7 @@ public class RootAutomatorEngine extends ScriptEngine.AbstractScriptEngine<AutoF
 
     private static final String KEY_TOUCH_DEVICE = RootAutomatorEngine.class.getName() + ".touch_device";
     private static final String LOG_TAG = "RootAutomatorEngine";
+    private static final Pattern PID_PATTERN = Pattern.compile("[0-9]{2,}");
 
     private static int sTouchDevice = -1;
     private static final String ROOT_AUTOMATOR_EXECUTABLE_ASSET = "binary/root_automator";
@@ -30,6 +40,8 @@ public class RootAutomatorEngine extends ScriptEngine.AbstractScriptEngine<AutoF
     private String mDeviceNameOrPath;
     private Thread mThread;
     private String mExecutablePath;
+    private String mPid;
+    private Process mProcess;
 
     public RootAutomatorEngine(Context context, String deviceNameOrPath) {
         mContext = context;
@@ -44,11 +56,49 @@ public class RootAutomatorEngine extends ScriptEngine.AbstractScriptEngine<AutoF
     public void execute(String autoFile) {
         mExecutablePath = getExecutablePath(mContext);
         Log.d(LOG_TAG, "exec: " + autoFile);
-        AbstractShell.Result result = ProcessShell.execCommand(new String[]{
-                "chmod 777 " + mExecutablePath,
-                mExecutablePath + " \"" + autoFile + "\" -d " + mDeviceNameOrPath
-        }, true);
-        Log.d(LOG_TAG, "result = " + result);
+        final String[] commands = {
+                "chmod 755 " + mExecutablePath,
+                String.format("\"%s\" \"%s\" -d \"%s\" &", mExecutablePath, autoFile, mDeviceNameOrPath), // to run root_automator
+                "echo $!",  // to print the root_automator pid
+                "exit", // to exit su
+                "exit"  // to exit shell
+        };
+        try {
+            mProcess = Runtime.getRuntime().exec("su");
+            executeCommands(mProcess, commands);
+            mPid = readPid(mProcess);
+            mProcess.waitFor();
+        } catch (IOException e) {
+            throw new ScriptException(e);
+        } catch (InterruptedException e) {
+            throw new ScriptInterruptedException();
+        } finally {
+            mProcess.destroy();
+            mProcess = null;
+        }
+    }
+
+    private String readPid(Process process) throws IOException {
+        BufferedReader reader = new BufferedReader(new InputStreamReader(process.getInputStream()));
+        String line;
+        while ((line = reader.readLine()) != null) {
+            Matcher matcher = PID_PATTERN.matcher(line);
+            if (matcher.find()) {
+                return matcher.group();
+            }
+        }
+        return null;
+    }
+
+    private void executeCommands(Process process, String[] commands) throws IOException {
+        DataOutputStream os = new DataOutputStream(process.getOutputStream());
+        for (String command : commands) {
+            if (command != null) {
+                os.write(command.getBytes());
+                os.writeBytes("\n");
+            }
+        }
+        os.flush();
     }
 
 
@@ -96,7 +146,9 @@ public class RootAutomatorEngine extends ScriptEngine.AbstractScriptEngine<AutoF
     @Override
     public void forceStop() {
         mThread.interrupt();
-        ProcessShell.exec("killall " + mExecutablePath, true);
+        if (mPid != null) {
+            ProcessShell.exec("kill " + mPid, true);
+        }
     }
 
     @Override
diff --git a/autojs/src/main/java/com/stardust/autojs/runtime/api/ProcessShell.java b/autojs/src/main/java/com/stardust/autojs/runtime/api/ProcessShell.java
index 0307099e..2f8aa0f7 100644
--- a/autojs/src/main/java/com/stardust/autojs/runtime/api/ProcessShell.java
+++ b/autojs/src/main/java/com/stardust/autojs/runtime/api/ProcessShell.java
@@ -226,7 +226,7 @@ public class ProcessShell extends AbstractShell {
         StringBuilder builder = new StringBuilder();
         BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));
         while ((line = reader.readLine()) != null) {
-            builder.append(line);
+            builder.append(line).append('\n');
         }
         return builder.toString();
     }