diff --git a/app/src/main/java/org/autojs/autojs/external/tasker/TaskerScriptEditActivity.java b/app/src/main/java/org/autojs/autojs/external/tasker/TaskerScriptEditActivity.java
index 345d9ea8..4f4df88e 100644
--- a/app/src/main/java/org/autojs/autojs/external/tasker/TaskerScriptEditActivity.java
+++ b/app/src/main/java/org/autojs/autojs/external/tasker/TaskerScriptEditActivity.java
@@ -7,7 +7,7 @@ import android.widget.Toast;
 
 import org.autojs.autojs.R;
 import org.autojs.autojs.timing.TaskReceiver;
-import org.autojs.autojs.tool.EmptyObservers;
+import org.autojs.autojs.tool.Observers;
 import org.autojs.autojs.ui.BaseActivity;
 import org.autojs.autojs.ui.edit.EditorView;
 
@@ -16,8 +16,6 @@ import org.androidannotations.annotations.EActivity;
 import org.androidannotations.annotations.ViewById;
 
 import io.reactivex.android.schedulers.AndroidSchedulers;
-import io.reactivex.annotations.NonNull;
-import io.reactivex.functions.Consumer;
 
 import static org.autojs.autojs.ui.edit.EditorView.EXTRA_CONTENT;
 import static org.autojs.autojs.ui.edit.EditorView.EXTRA_NAME;
@@ -50,7 +48,7 @@ public class TaskerScriptEditActivity extends BaseActivity {
                 .putExtra(EXTRA_RUN_ENABLED, false)
                 .putExtra(EXTRA_SAVE_ENABLED, false))
                 .observeOn(AndroidSchedulers.mainThread())
-                .subscribe(EmptyObservers.consumer(),
+                .subscribe(Observers.consumer(),
                         ex -> {
                             Toast.makeText(TaskerScriptEditActivity.this, ex.getMessage(), Toast.LENGTH_LONG).show();
                             finish();
diff --git a/app/src/main/java/org/autojs/autojs/model/explorer/Explorers.java b/app/src/main/java/org/autojs/autojs/model/explorer/Explorers.java
index b3dd18dd..e149d8ef 100644
--- a/app/src/main/java/org/autojs/autojs/model/explorer/Explorers.java
+++ b/app/src/main/java/org/autojs/autojs/model/explorer/Explorers.java
@@ -7,7 +7,7 @@ import org.greenrobot.eventbus.EventBus;
 public class Explorers {
 
 
-    private static Explorer sWorkspaceExplorer = new Explorer(new WorkspaceFileProvider(GlobalAppContext.get(), null), 20);
+    private static Explorer sWorkspaceExplorer = new Explorer(Providers.workspace(), 20);
 
     private static Explorer sExternalExplorer = new Explorer(new ExplorerFileProvider(), 10);
 
@@ -18,4 +18,12 @@ public class Explorers {
     public static Explorer external() {
         return sExternalExplorer;
     }
+
+    public static class Providers {
+        private static WorkspaceFileProvider sWorkspaceFileProvider = new WorkspaceFileProvider(GlobalAppContext.get(), null);
+
+        public static WorkspaceFileProvider workspace() {
+            return sWorkspaceFileProvider;
+        }
+    }
 }
diff --git a/app/src/main/java/org/autojs/autojs/model/explorer/WorkspaceFileProvider.java b/app/src/main/java/org/autojs/autojs/model/explorer/WorkspaceFileProvider.java
index e9a147d2..fe0398ea 100644
--- a/app/src/main/java/org/autojs/autojs/model/explorer/WorkspaceFileProvider.java
+++ b/app/src/main/java/org/autojs/autojs/model/explorer/WorkspaceFileProvider.java
@@ -8,7 +8,7 @@ import com.stardust.pio.PFile;
 import com.stardust.pio.PFiles;
 
 import org.autojs.autojs.Pref;
-import org.autojs.autojs.model.sample.SampleFile;
+import org.autojs.autojs.model.script.ScriptFile;
 
 import java.io.File;
 import java.io.FileFilter;
@@ -16,6 +16,7 @@ import java.io.FileNotFoundException;
 import java.io.InputStream;
 
 import io.reactivex.Observable;
+import io.reactivex.Scheduler;
 import io.reactivex.Single;
 import io.reactivex.schedulers.Schedulers;
 
@@ -99,8 +100,18 @@ public class WorkspaceFileProvider extends ExplorerFileProvider {
                 });
     }
 
-    public static void resetSample(SampleFile sampleFile){
-
+    public Observable<ScriptFile> resetSample(ScriptFile file) {
+        if (file.getPath().length() <= mSampleDir.getPath().length() + 1) {
+            return null;
+        }
+        String pathOfSample = file.getPath().substring(mSampleDir.getPath().length());
+        String pathOfAsset = SAMPLE_PATH + pathOfSample;
+        return Observable.fromCallable(() -> {
+            InputStream stream = mAssetManager.open(pathOfAsset);
+            PFiles.copyStream(stream, file.getPath());
+            return file;
+        })
+                .subscribeOn(Schedulers.io());
     }
 
     @Override
diff --git a/app/src/main/java/org/autojs/autojs/model/indices/AndroidClassIndices.java b/app/src/main/java/org/autojs/autojs/model/indices/AndroidClassIndices.java
index acca9a9b..ddec3833 100644
--- a/app/src/main/java/org/autojs/autojs/model/indices/AndroidClassIndices.java
+++ b/app/src/main/java/org/autojs/autojs/model/indices/AndroidClassIndices.java
@@ -8,7 +8,7 @@ import android.text.TextUtils;
 import com.google.gson.Gson;
 import com.google.gson.reflect.TypeToken;
 
-import org.autojs.autojs.tool.EmptyObservers;
+import org.autojs.autojs.tool.Observers;
 
 import java.io.IOException;
 import java.io.InputStreamReader;
@@ -101,7 +101,7 @@ public class AndroidClassIndices {
                 .doOnNext(this::load)
                 .subscribeOn(Schedulers.from(mSingleThreadExecutor))
                 .observeOn(AndroidSchedulers.mainThread())
-                .subscribe(EmptyObservers.consumer(), t -> {
+                .subscribe(Observers.consumer(), t -> {
                     mLoadThrowable = t;
                     t.printStackTrace();
                 });
diff --git a/app/src/main/java/org/autojs/autojs/timing/TimedTaskManager.java b/app/src/main/java/org/autojs/autojs/timing/TimedTaskManager.java
index b0bcd9a2..9523d787 100644
--- a/app/src/main/java/org/autojs/autojs/timing/TimedTaskManager.java
+++ b/app/src/main/java/org/autojs/autojs/timing/TimedTaskManager.java
@@ -11,7 +11,7 @@ import org.autojs.autojs.App;
 import org.autojs.autojs.storage.database.IntentTaskDatabase;
 import org.autojs.autojs.storage.database.ModelChange;
 import org.autojs.autojs.storage.database.TimedTaskDatabase;
-import org.autojs.autojs.tool.EmptyObservers;
+import org.autojs.autojs.tool.Observers;
 
 import java.util.List;
 
@@ -58,11 +58,11 @@ public class TimedTaskManager {
             return;
         if (task.isDisposable()) {
             mTimedTaskDatabase.delete(task)
-                    .subscribe(EmptyObservers.consumer(), Throwable::printStackTrace);
+                    .subscribe(Observers.consumer(), Throwable::printStackTrace);
         } else {
             task.setScheduled(false);
             mTimedTaskDatabase.update(task)
-                    .subscribe(EmptyObservers.consumer(), Throwable::printStackTrace);
+                    .subscribe(Observers.consumer(), Throwable::printStackTrace);
         }
     }
 
@@ -70,13 +70,13 @@ public class TimedTaskManager {
     public void removeTask(TimedTask timedTask) {
         TimedTaskScheduler.cancel(mContext, timedTask);
         mTimedTaskDatabase.delete(timedTask)
-                .subscribe(EmptyObservers.consumer(), Throwable::printStackTrace);
+                .subscribe(Observers.consumer(), Throwable::printStackTrace);
     }
 
     @SuppressLint("CheckResult")
     public void addTask(TimedTask timedTask) {
         mTimedTaskDatabase.insert(timedTask)
-                .subscribe(EmptyObservers.consumer(), Throwable::printStackTrace);;
+                .subscribe(Observers.consumer(), Throwable::printStackTrace);;
         TimedTaskScheduler.scheduleTaskIfNeeded(mContext, timedTask);
     }
 
@@ -119,7 +119,7 @@ public class TimedTaskManager {
     public void notifyTaskScheduled(TimedTask timedTask) {
         timedTask.setScheduled(true);
         mTimedTaskDatabase.update(timedTask)
-                .subscribe(EmptyObservers.consumer(), Throwable::printStackTrace);
+                .subscribe(Observers.consumer(), Throwable::printStackTrace);
 
     }
 
@@ -134,7 +134,7 @@ public class TimedTaskManager {
     @SuppressLint("CheckResult")
     public void updateTask(TimedTask task) {
         mTimedTaskDatabase.update(task)
-                .subscribe(EmptyObservers.consumer(), Throwable::printStackTrace);
+                .subscribe(Observers.consumer(), Throwable::printStackTrace);
         TimedTaskScheduler.cancel(mContext, task);
         TimedTaskScheduler.scheduleTaskIfNeeded(mContext, task);
     }
diff --git a/app/src/main/java/org/autojs/autojs/tool/EmptyObservers.java b/app/src/main/java/org/autojs/autojs/tool/EmptyObservers.java
deleted file mode 100644
index 789f1bbc..00000000
--- a/app/src/main/java/org/autojs/autojs/tool/EmptyObservers.java
+++ /dev/null
@@ -1,15 +0,0 @@
-package org.autojs.autojs.tool;
-
-import io.reactivex.functions.Consumer;
-
-public class EmptyObservers {
-
-    private static final Consumer CONSUMER = ignored -> {
-
-    };
-
-    @SuppressWarnings("unchecked")
-    public static <T> Consumer<T> consumer() {
-        return CONSUMER;
-    }
-}
diff --git a/app/src/main/java/org/autojs/autojs/tool/Observers.java b/app/src/main/java/org/autojs/autojs/tool/Observers.java
new file mode 100644
index 00000000..63207729
--- /dev/null
+++ b/app/src/main/java/org/autojs/autojs/tool/Observers.java
@@ -0,0 +1,27 @@
+package org.autojs.autojs.tool;
+
+import com.stardust.app.GlobalAppContext;
+
+import io.reactivex.functions.Consumer;
+
+public class Observers {
+
+    private static final Consumer CONSUMER = ignored -> {
+
+    };
+
+    private static final Consumer<Throwable> TOAST_MESSAGE = e -> {
+        e.printStackTrace();
+        GlobalAppContext.toast(e.getMessage());
+    };
+
+
+    @SuppressWarnings("unchecked")
+    public static <T> Consumer<T> consumer() {
+        return CONSUMER;
+    }
+
+    public static Consumer<Throwable> toastMessage() {
+        return TOAST_MESSAGE;
+    }
+}
diff --git a/app/src/main/java/org/autojs/autojs/ui/edit/EditActivity.java b/app/src/main/java/org/autojs/autojs/ui/edit/EditActivity.java
index 2063ab26..aaeea590 100644
--- a/app/src/main/java/org/autojs/autojs/ui/edit/EditActivity.java
+++ b/app/src/main/java/org/autojs/autojs/ui/edit/EditActivity.java
@@ -10,7 +10,6 @@ import android.util.Log;
 import android.view.ActionMode;
 import android.view.Menu;
 import android.view.MenuItem;
-import android.widget.Toast;
 
 import com.stardust.app.OnActivityResultDelegate;
 import com.stardust.autojs.core.permission.OnRequestPermissionsResultCallback;
@@ -21,7 +20,7 @@ import com.stardust.pio.PFiles;
 
 import org.autojs.autojs.R;
 import org.autojs.autojs.storage.file.TmpScriptFiles;
-import org.autojs.autojs.tool.EmptyObservers;
+import org.autojs.autojs.tool.Observers;
 import org.autojs.autojs.ui.BaseActivity;
 import org.autojs.autojs.theme.dialog.ThemeColorMaterialDialogBuilder;
 
@@ -82,7 +81,7 @@ EditActivity extends BaseActivity implements OnActivityResultDelegate.DelegateHo
     void setUpViews() {
         mEditorView.handleIntent(getIntent())
                 .observeOn(AndroidSchedulers.mainThread())
-                .subscribe(EmptyObservers.consumer(),
+                .subscribe(Observers.consumer(),
                         ex -> onLoadFileError(ex.getMessage()));
         mEditorMenu = new EditorMenu(mEditorView);
         setUpToolbar();
diff --git a/app/src/main/java/org/autojs/autojs/ui/edit/EditorView.java b/app/src/main/java/org/autojs/autojs/ui/edit/EditorView.java
index 96f9b73d..3285c02e 100644
--- a/app/src/main/java/org/autojs/autojs/ui/edit/EditorView.java
+++ b/app/src/main/java/org/autojs/autojs/ui/edit/EditorView.java
@@ -22,6 +22,7 @@ import android.view.Gravity;
 import android.view.View;
 import android.widget.FrameLayout;
 import android.widget.ImageView;
+import android.widget.Toast;
 
 import com.afollestad.materialdialogs.MaterialDialog;
 import com.stardust.autojs.engine.JavaScriptEngine;
@@ -45,6 +46,7 @@ import org.autojs.autojs.model.autocomplete.Symbols;
 import org.autojs.autojs.model.indices.Module;
 import org.autojs.autojs.model.indices.Property;
 import org.autojs.autojs.model.script.Scripts;
+import org.autojs.autojs.tool.Observers;
 import org.autojs.autojs.ui.doc.ManualDialog;
 import org.autojs.autojs.ui.edit.completion.CodeCompletionBar;
 import org.autojs.autojs.ui.edit.debug.DebugBar;
@@ -384,7 +386,7 @@ public class EditorView extends FrameLayout implements CodeCompletionBar.OnHintC
     @SuppressLint("CheckResult")
     public void runAndSaveFileIfNeeded() {
         save().observeOn(AndroidSchedulers.mainThread())
-                .subscribe(s -> run(true));
+                .subscribe(s -> run(true), Observers.toastMessage());
     }
 
     public ScriptExecution run(boolean showMessage) {
@@ -434,8 +436,14 @@ public class EditorView extends FrameLayout implements CodeCompletionBar.OnHintC
         }
     }
 
+    @SuppressLint("CheckResult")
     public void saveFile() {
-        save().subscribe();
+        save()
+                .observeOn(AndroidSchedulers.mainThread())
+                .subscribe(Observers.consumer(), e -> {
+                    e.printStackTrace();
+                    Toast.makeText(getContext(), e.getMessage(), Toast.LENGTH_SHORT).show();
+                });
     }
 
     void findNext() {
diff --git a/app/src/main/java/org/autojs/autojs/ui/explorer/ExplorerView.java b/app/src/main/java/org/autojs/autojs/ui/explorer/ExplorerView.java
index 900fefa6..9059a87e 100644
--- a/app/src/main/java/org/autojs/autojs/ui/explorer/ExplorerView.java
+++ b/app/src/main/java/org/autojs/autojs/ui/explorer/ExplorerView.java
@@ -4,6 +4,7 @@ import android.annotation.SuppressLint;
 import android.content.Context;
 import android.graphics.drawable.GradientDrawable;
 import android.support.annotation.Nullable;
+import android.support.design.widget.Snackbar;
 import android.support.v4.widget.SwipeRefreshLayout;
 import android.support.v7.widget.GridLayoutManager;
 import android.support.v7.widget.LinearLayoutManager;
@@ -34,6 +35,7 @@ import org.autojs.autojs.model.explorer.WorkspaceFileProvider;
 import org.autojs.autojs.model.sample.SampleFile;
 import org.autojs.autojs.model.script.ScriptFile;
 import org.autojs.autojs.model.script.Scripts;
+import org.autojs.autojs.tool.Observers;
 import org.autojs.autojs.ui.project.BuildActivity;
 import org.autojs.autojs.ui.project.BuildActivity_;
 import org.autojs.autojs.ui.common.ScriptLoopDialog;
@@ -313,7 +315,12 @@ public class ExplorerView extends ThemeColorSwipeRefreshLayout implements SwipeR
                 sort(ExplorerItemList.SORT_TYPE_SIZE, mDirSortMenuShowing);
                 break;
             case R.id.reset:
-                // WorkspaceFileProvider.resetSample(mSelectedItem.toScriptFile());
+                Explorers.Providers.workspace().resetSample(mSelectedItem.toScriptFile())
+                        .observeOn(AndroidSchedulers.mainThread())
+                        .subscribe(ignored -> {
+                            Snackbar.make(this, R.string.text_reset_succeed, Snackbar.LENGTH_SHORT).show();
+                        }, Observers.toastMessage());
+                break;
             default:
                 return false;
         }
@@ -496,8 +503,8 @@ public class ExplorerView extends ThemeColorSwipeRefreshLayout implements SwipeR
             if (!mExplorerItem.canRename()) {
                 menu.removeItem(R.id.rename);
             }
-            if (mExplorerItem instanceof ExplorerSampleItem) {
-
+            if (!(mExplorerItem instanceof ExplorerSampleItem)) {
+                menu.removeItem(R.id.reset);
             }
             popupMenu.setOnMenuItemClickListener(ExplorerView.this);
             popupMenu.show();
diff --git a/app/src/main/java/org/autojs/autojs/ui/main/MainActivity.java b/app/src/main/java/org/autojs/autojs/ui/main/MainActivity.java
index 606485f7..e3313660 100644
--- a/app/src/main/java/org/autojs/autojs/ui/main/MainActivity.java
+++ b/app/src/main/java/org/autojs/autojs/ui/main/MainActivity.java
@@ -134,7 +134,7 @@ public class MainActivity extends BaseActivity implements OnActivityResultDelega
     }
 
     private void checkPermissions() {
-        checkPermission(Manifest.permission.READ_EXTERNAL_STORAGE);
+        checkPermission(Manifest.permission.WRITE_EXTERNAL_STORAGE);
     }
 
     private void showAccessibilitySettingPromptIfDisabled() {
diff --git a/app/src/main/java/org/autojs/autojs/ui/main/drawer/DrawerFragment.java b/app/src/main/java/org/autojs/autojs/ui/main/drawer/DrawerFragment.java
index 49e176eb..902ad195 100644
--- a/app/src/main/java/org/autojs/autojs/ui/main/drawer/DrawerFragment.java
+++ b/app/src/main/java/org/autojs/autojs/ui/main/drawer/DrawerFragment.java
@@ -26,7 +26,7 @@ import org.autojs.autojs.R;
 import org.autojs.autojs.external.foreground.ForegroundService;
 import org.autojs.autojs.network.GlideApp;
 import org.autojs.autojs.network.UserService;
-import org.autojs.autojs.tool.EmptyObservers;
+import org.autojs.autojs.tool.Observers;
 import org.autojs.autojs.ui.common.NotAskAgainDialog;
 import org.autojs.autojs.ui.floating.CircularMenu;
 import org.autojs.autojs.ui.floating.FloatyWindowManger;
@@ -279,7 +279,7 @@ public class DrawerFragment extends android.support.v4.app.Fragment {
                 .input("", host, (dialog, input) -> {
                     Pref.saveServerAddress(input.toString());
                     DevPluginService.getInstance().connectToServer(input.toString())
-                            .subscribe(EmptyObservers.consumer(), this::onConnectException);
+                            .subscribe(Observers.consumer(), this::onConnectException);
                 })
                 .neutralText(R.string.text_help)
                 .onNeutral((dialog, which) -> {
diff --git a/app/src/main/res/menu/menu_script_options.xml b/app/src/main/res/menu/menu_script_options.xml
index 5e229e46..2e31fe8f 100644
--- a/app/src/main/res/menu/menu_script_options.xml
+++ b/app/src/main/res/menu/menu_script_options.xml
@@ -17,7 +17,9 @@
         android:id="@+id/send"
         android:title="@string/text_send"/>
 
-
+    <item
+        android:id="@+id/reset"
+        android:title="@string/text_reset_to_initial_content"/>
     <item
         android:id="@+id/more"
         android:title="@string/text_more">
diff --git a/autojs/src/main/java/com/stardust/autojs/core/ui/inflater/util/Gravities.java b/autojs/src/main/java/com/stardust/autojs/core/ui/inflater/util/Gravities.java
index a56711b5..2b7f74cc 100644
--- a/autojs/src/main/java/com/stardust/autojs/core/ui/inflater/util/Gravities.java
+++ b/autojs/src/main/java/com/stardust/autojs/core/ui/inflater/util/Gravities.java
@@ -41,4 +41,6 @@ public class Gravities {
         return gravity;
     }
 
+
+
 }