Finished save functionality and started load functionality

app/src/main/AndroidManifest.xml

@@ -2,6 +2,7 @@
 <manifest xmlns:android="http://schemas.android.com/apk/res/android"
     package="com.wbrawner.simplemarkdown">
 
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
     <application
         android:allowBackup="true"
         android:icon="@mipmap/ic_launcher"
@@ -13,6 +14,17 @@
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"></action>
                 <category android:name="android.intent.category.LAUNCHER"></category>
+                <action android:name="android.intent.action.EDIT" />
+                <action android:name="android.intent.action.VIEW" />
+                <category android:name="android.intent.category.DEFAULT"/>
+                <category android:name="android.intent.category.BROWSABLE"/>
+                <data android:scheme="file" />
+                <data android:scheme="content" />
+                <data android:mimeType="text/plain" />
+                <data android:mimeType="text/markdown" />
+                <data android:pathPattern=".*\\.md" />
+                <data android:mimeType="application/octet-stream" />
+                <data android:host="*" />
             </intent-filter>
         </activity>
         <provider

app/src/main/java/com/wbrawner/simplemarkdown/EditFragment.java

@@ -1,9 +1,11 @@
 package com.wbrawner.simplemarkdown;
 
+import android.app.Activity;
 import android.content.BroadcastReceiver;
 import android.content.Context;
 import android.content.Intent;
 import android.content.IntentFilter;
+import android.net.Uri;
 import android.os.Bundle;
 import android.support.annotation.Nullable;
 import android.support.v4.app.Fragment;
@@ -33,7 +35,11 @@ import static android.content.ContentValues.TAG;
 
 public class EditFragment extends Fragment {
     public static final String SAVE_ACTION = "com.wbrawner.simplemarkdown.ACTION_SAVE";
-    @BindView(R.id.markdown_edit) EditText markdownEditor;
+    public static final String LOAD_ACTION = "com.wbrawner.simplemarkdown.ACTION_LOAD";
+    @BindView(R.id.markdown_edit)
+    EditText markdownEditor;
+
+    private Activity mContext;
 
     private File mTmpFile;
 
@@ -46,10 +52,12 @@ public class EditFragment extends Fragment {
         super.onCreate(savedInstanceState);
         IntentFilter filter = new IntentFilter();
         filter.addAction(SAVE_ACTION);
+        filter.addAction(LOAD_ACTION);
         LocalBroadcastManager.getInstance(getContext()).registerReceiver(
                 new EditFragment.MarkdownBroadcastSaveReceiver(),
                 filter
         );
+        mContext = getActivity();
     }
 
     @Override
@@ -60,7 +68,8 @@ public class EditFragment extends Fragment {
         ButterKnife.bind(this, view);
         if (markdownEditor.requestFocus()) {
             getActivity().getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_STATE_ALWAYS_VISIBLE);
-        };
+        }
+        ;
         markdownEditor.addTextChangedListener(new TextWatcher() {
             @Override
             public void beforeTextChanged(CharSequence charSequence, int i, int i1, int i2) {
@@ -82,12 +91,10 @@ public class EditFragment extends Fragment {
     @Override
     public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
         super.onViewCreated(view, savedInstanceState);
-        Log.d(TAG, "Markdown from beginning: " + markdownEditor.getText().toString());
         BufferedReader reader = null;
         try {
             File tmpFile = new File(getActivity().getFilesDir() + MainActivity.getTempFileName());
             if (tmpFile.exists()) {
-                Log.d(TAG, "Temp file size: " + tmpFile.length());
                 InputStream in = new FileInputStream(tmpFile);
                 reader = new BufferedReader(new InputStreamReader(in));
                 String line;
@@ -106,16 +113,10 @@ public class EditFragment extends Fragment {
                 }
             }
         }
-        if (markdownEditor.getText().length() > 0) {
-            Log.d(TAG, "We have text");
-        } else {
-            Log.d(TAG, "Blank slate");
-        }
         updatePreview(markdownEditor.getText());
     }
 
     private void updatePreview(Editable data) {
-        Log.d(TAG, "Data to send: " + data.toString());
         Intent broadcastIntent = new Intent(PreviewFragment.PREVIEW_ACTION);
         broadcastIntent.putExtra("markdownData", data.toString());
         LocalBroadcastManager manager = LocalBroadcastManager.getInstance(getContext());
@@ -161,11 +162,25 @@ public class EditFragment extends Fragment {
     private class MarkdownBroadcastSaveReceiver extends BroadcastReceiver {
         @Override
         public void onReceive(Context context, Intent intent) {
+            Log.d(TAG, "Intent received: " + intent.getAction());
+            switch (intent.getAction()) {
+                case SAVE_ACTION:
                     if (intent.hasExtra("fileName")) {
                         String fileName = intent.getStringExtra("fileName");
-                Log.d(TAG, "File: " + fileName);
                         save(markdownEditor.getText().toString(), fileName);
                     }
+                    break;
+                case LOAD_ACTION:
+                    if (intent.hasExtra("fileUri")) {
+                        load(Uri.parse(intent.getStringExtra("fileUri")));
                     }
+                    break;
+            }
+        }
+    }
+
+    private void load(Uri fileUri) {
+        FileLoadTask loadTask = new FileLoadTask(mContext, markdownEditor);
+        loadTask.execute(fileUri);
     }
 }

app/src/main/java/com/wbrawner/simplemarkdown/FileLoadTask.java

@@ -0,0 +1,64 @@
+package com.wbrawner.simplemarkdown;
+
+import android.content.Context;
+import android.net.Uri;
+import android.os.AsyncTask;
+import android.util.Log;
+import android.widget.EditText;
+
+import java.io.BufferedReader;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+
+import static android.content.ContentValues.TAG;
+
+/**
+ * Created by billy on 7/25/17.
+ */
+
+public class FileLoadTask extends AsyncTask<Uri, Void, String> {
+
+    private Context mContext;
+    private EditText mMarkdownEditor;
+
+    public FileLoadTask(Context context, EditText markdownEditor) {
+        mContext = context;
+        mMarkdownEditor = markdownEditor;
+    }
+
+    @Override
+    protected String doInBackground(Uri... uris) {
+        if (mContext == null) {
+            Log.d(TAG, "No context, abort");
+            return null;
+        }
+        Log.d(TAG, "Begin loading file");
+        BufferedReader reader = null;
+        StringBuilder sb = new StringBuilder();
+        try {
+            InputStream in = mContext.getContentResolver().openInputStream(uris[0]);
+            reader = new BufferedReader(new InputStreamReader(in));
+            String line;
+            while ((line = reader.readLine()) != null) {
+                sb.append(line);
+                sb.append("\r\n");
+            }
+        } catch (Exception e) {
+            Log.e(TAG, "Error opening file:", e);
+        } finally {
+            if (reader != null) {
+                try {
+                    reader.close();
+                } catch (Exception e) {
+                }
+            }
+        }
+        return sb.toString();
+    }
+
+    @Override
+    protected void onPostExecute(String s) {
+        mMarkdownEditor.setText(s);
+        super.onPostExecute(s);
+    }
+}

app/src/main/java/com/wbrawner/simplemarkdown/MainActivity.java

@@ -1,12 +1,18 @@
 package com.wbrawner.simplemarkdown;
 
+import android.Manifest;
+import android.content.ActivityNotFoundException;
+import android.content.ClipData;
 import android.content.DialogInterface;
 import android.content.Intent;
+import android.content.pm.PackageManager;
 import android.net.Uri;
 import android.support.design.widget.TabLayout;
+import android.support.v4.app.ActivityCompat;
 import android.support.v4.app.Fragment;
 import android.support.v4.app.FragmentManager;
 import android.support.v4.app.FragmentPagerAdapter;
+import android.support.v4.content.ContextCompat;
 import android.support.v4.content.FileProvider;
 import android.support.v4.content.LocalBroadcastManager;
 import android.support.v4.view.ViewPager;
@@ -17,7 +23,9 @@ import android.text.InputType;
 import android.util.Log;
 import android.view.Menu;
 import android.view.MenuItem;
+import android.webkit.MimeTypeMap;
 import android.widget.EditText;
+import android.widget.Toast;
 
 import java.io.File;
 
@@ -27,6 +35,7 @@ import butterknife.ButterKnife;
 public class MainActivity extends AppCompatActivity {
 
     private static final String AUTHORITY = "com.wbrawner.simplemarkdown.fileprovider";
+    private static final int REQUEST_WRITE_STORAGE = 0;
     private static File mFilesDir;
     @BindView(R.id.pager) ViewPager pager;
     @BindView(R.id.layout_tab) TabLayout tabLayout;
@@ -35,22 +44,24 @@ public class MainActivity extends AppCompatActivity {
     private static String fileName;
 
     public static String getTempFileName() {
-        return "com_wbrawner_simplemarkdown_tmp.md";
+        return "tmp_" + getFileName();
     }
 
     public static String getFileName() {
         if (fileName == null) {
-            return getTempFileName();
+            return "untitled.md";
         }
+        if (!fileName.endsWith(".md"))
+            return fileName + ".md";
         return fileName;
     }
 
     public static String getTempFilePath() {
-        return mFilesDir + File.pathSeparator + "tmp" + File.pathSeparator;
+        return mFilesDir + "/tmp/";
     }
 
     public static String getFilePath() {
-        return mFilesDir + File.pathSeparator + "saved_files" + File.pathSeparator;
+        return mFilesDir + "/saved_files/";
     }
 
     public static void setFileName(String fileName) {
@@ -64,13 +75,33 @@ public class MainActivity extends AppCompatActivity {
         ButterKnife.bind(this);
         pager.setAdapter(new EditPagerAdapter(getSupportFragmentManager()));
         mFilesDir = getFilesDir();
+        checkDirectories();
+        Intent intent = getIntent();
+        if (intent != null && intent.getData() != null) {
+            Intent loadIntent = new Intent(EditFragment.LOAD_ACTION);
+            loadIntent.putExtra("fileUri", intent.getData().toString());
+            LocalBroadcastManager.getInstance(getApplicationContext())
+                    .sendBroadcast(loadIntent);
+        }
     }
 
-//    @Override
+    private void checkDirectories() {
-//    public boolean onCreateOptionsMenu(Menu menu) {
+        File tmpDir = new File(getTempFilePath());
-//        getMenuInflater().inflate(R.menu.menu_edit, menu);
+        if (!tmpDir.exists()) {
-//        return true;
+            tmpDir.mkdir();
-//    }
+        }
+        File outDir = new File(getFilePath());
+        if (!outDir.exists()) {
+            outDir.mkdir();
+        }
+
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        getMenuInflater().inflate(R.menu.menu_edit, menu);
+        return true;
+    }
 
     @Override
     public boolean onOptionsItemSelected(MenuItem item) {
@@ -83,16 +114,20 @@ public class MainActivity extends AppCompatActivity {
                 final EditText input = new EditText(this);
                 input.setInputType(InputType.TYPE_CLASS_TEXT);
                 input.setHint(R.string.hint_filename);
+                input.setText(getFileName());
                 builder.setView(input);
 
                 builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
                     @Override
                     public void onClick(DialogInterface dialog, int which) {
+                        if (input.getText().length() > 0) {
+                            setFileName(input.getText().toString());
                             Intent saveIntent = new Intent(EditFragment.SAVE_ACTION);
                             saveIntent.putExtra("fileName", input.getText());
                             LocalBroadcastManager.getInstance(getApplicationContext())
                                     .sendBroadcast(saveIntent);
                         }
+                    }
                 });
                 builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                     @Override
@@ -105,22 +140,75 @@ public class MainActivity extends AppCompatActivity {
                 break;
             case R.id.action_share:
                 //TODO: Fix this
-                File tmpFile = new File(getFilesDir() + getTempFileName());
+                File tmpFile = new File(getTempFilePath() + getFileName());
-                if (tmpFile.exists()) {
+                if (!tmpFile.exists()) {
+                    Intent saveIntent = new Intent(EditFragment.SAVE_ACTION);
+                    saveIntent.putExtra("fileName", getTempFilePath() + getFileName());
+                    LocalBroadcastManager.getInstance(getApplicationContext())
+                            .sendBroadcast(saveIntent);
+                }
                 Log.d(TAG, "Temp file size: " + tmpFile.length());
                 Uri fileUri = FileProvider.getUriForFile(MainActivity.this, AUTHORITY, tmpFile);
+//                Uri fileUri = Uri.fromFile(tmpFile);
                 if (fileUri != null) {
+                    Log.d(TAG, "MIME type: " + getContentResolver().getType(fileUri));
+                    try {
                         Intent shareIntent = new Intent(Intent.ACTION_SEND);
+                        shareIntent.setDataAndType(
+                                fileUri,
+                                getContentResolver().getType(fileUri)
+                        );
                         shareIntent.putExtra(Intent.EXTRA_STREAM, fileUri);
                         shareIntent.setFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION);
-                        startActivity(shareIntent);
+                        startActivity(
+                                Intent.createChooser(
+                                        shareIntent,
+                                        getString(R.string.share_file)
+                                )
+                        );
+                    } catch (ActivityNotFoundException e) {
+                        Log.e(TAG, "Error sharing file", e);
+                        Toast.makeText(
+                                MainActivity.this,
+                                R.string.no_shareable_apps,
+                                Toast.LENGTH_SHORT
+                        ).show();
                     }
                 }
                 break;
+//            case R.id.action_export:
+//                //TODO: Implement export functionality
+//                if (ContextCompat.checkSelfPermission(MainActivity.this,
+//                        Manifest.permission.WRITE_EXTERNAL_STORAGE)
+//                        != PackageManager.PERMISSION_GRANTED){
+//                ActivityCompat.requestPermissions(MainActivity.this,
+//                        new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE},
+//                        REQUEST_WRITE_STORAGE);
+//                break;
+//            }
         }
         return super.onOptionsItemSelected(item);
     }
 
+    @Override
+    public void onRequestPermissionsResult(int requestCode,
+                                           String permissions[], int[] grantResults) {
+        //TODO: Implement export functionality
+        switch (requestCode) {
+            case REQUEST_WRITE_STORAGE: {
+                // If request is cancelled, the result arrays are empty.
+                if (grantResults.length > 0
+                        && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
+                    // Permission granted, open file chooser dialog
+
+                } else {
+                    // Permission denied, do nothing
+                }
+                return;
+            }
+        }
+    }
+
     public class EditPagerAdapter extends FragmentPagerAdapter {
         private static final int FRAGMENT_EDIT = 0;
         private static final int FRAGMENT_PREVIEW = 1;

app/src/main/res/menu/menu_edit.xml

@@ -11,4 +11,19 @@
         android:id="@+id/action_share"
         android:icon="@android:drawable/ic_menu_share"
         app:showAsAction="always" />
+    <!--<item-->
+        <!--android:id="@+id/action_export"-->
+        <!--android:orderInCategory="100"-->
+        <!--android:title="@string/action_export"-->
+        <!--app:showAsAction="never" />-->
+    <!--<item-->
+        <!--android:id="@+id/action_settings"-->
+        <!--android:orderInCategory="100"-->
+        <!--android:title="@string/action_settings"-->
+        <!--app:showAsAction="never" />-->
+    <!--<item-->
+        <!--android:id="@+id/action_help"-->
+        <!--android:orderInCategory="100"-->
+        <!--android:title="@string/action_help"-->
+        <!--app:showAsAction="never" />-->
 </menu>

app/src/main/res/menu/menu_main.xml

@@ -1,15 +0,0 @@
-<menu xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools"
-    tools:context="com.wbrawner.simplemarkdown.MainActivity">
-    <item
-        android:id="@+id/action_settings"
-        android:orderInCategory="100"
-        android:title="@string/action_settings"
-        app:showAsAction="never" />
-    <item
-        android:id="@+id/action_help"
-        android:orderInCategory="100"
-        android:title="@string/action_help"
-        app:showAsAction="never" />
-</menu>

app/src/main/res/values/strings.xml

@@ -11,4 +11,7 @@
     <string name="action_save">Save</string>
     <string name="action_share">Share</string>
     <string name="hint_filename">File name</string>
+    <string name="action_export">Export</string>
+    <string name="no_shareable_apps">Unable to share file - no capable apps installed</string>
+    <string name="share_file">Share file to...</string>
 </resources>

app/src/main/res/xml/file_paths.xml

@@ -1,4 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <paths xmlns:android="http://schemas.android.com/apk/res/android">
-    <files-path name="markdown_files" path="/"/>
+    <files-path name="saved_files" path="saved_files/"/>
+    <files-path name="tmp" path="tmp/"/>
 </paths>