.gitignore

@@ -1,4 +1,4 @@
 /src/Notes/
 /src/.idea/
-/src/Notes-master1/
+/src/Notes/
 /.idea/

src/main/AndroidManifest.xml

@@ -41,12 +41,16 @@
     <uses-permission android:name="android.permission.USE_CREDENTIALS" />
     <!--- 开机自动运行权限 -->
     <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
+    <!--- 存储的读写权限 -->
+    <uses-permission android:name="android.permission.READ_MEDIA_IMAGES" />
+    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
 
     <!--- 应用程序组件声明 -->
     <!--- 定义应用程序的图标和名称 -->
     <application
         android:icon="@drawable/icon_app"
-        android:label="@string/app_name" >
+        android:label="@string/app_name"
+        android:requestLegacyExternalStorage="true">
 
         <!--- 应用程序的入口 NotesListActivity -->
         <activity

src/main/java/net/micode/notes/ui/NoteEditActivity.java

@@ -144,6 +144,23 @@ public class NoteEditActivity extends Activity implements OnClickListener,
             return;
         }
         initResources();
+
+        final ImageButton add_img_btn = (ImageButton) findViewById(R.id.add_img_btn);//根据id获取添加图片按钮
+        //为点击图片按钮设置监听器
+        add_img_btn.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View view) {
+                Log.d(TAG, "onClick: click add image button");
+                //ACTION_GET_CONTENT: 允许用户选择特殊种类的数据，并返回（特殊种类的数据：照一张相片或录一段音）
+                Intent loadImage = new Intent(Intent.ACTION_GET_CONTENT);
+                //Category属性用于指定当前动作（Action）被执行的环境.
+                //CATEGORY_OPENABLE; 用来指示一个ACTION_GET_CONTENT的intent
+                loadImage.addCategory(Intent.CATEGORY_OPENABLE);
+                loadImage.setType("image/*");
+                startActivityForResult(loadImage, PHOTO_REQUEST);
+            }
+        });
+        convertToImage();//将路径显示为图片
     }
 
     /**
@@ -287,6 +304,7 @@ public class NoteEditActivity extends Activity implements OnClickListener,
          * is not ready
          */
         showAlertHeader();
+        convertToImage();//将路径转化未图片
     }
     /**
      * @method  showAlertHeader
@@ -981,4 +999,221 @@ public class NoteEditActivity extends Activity implements OnClickListener,
     private void showToast(int resId, int duration) {
         Toast.makeText(this, resId, duration).show();
     }
+
+    /**
+     * @method          convertToImage
+     * @description:    路径字符串格式 转换为 图片image格式
+     * @date:           2024/1/3 19:19
+     * @author:         WuShuxian
+     * @param:          void
+     * @return:         void
+     */
+    private void convertToImage() {
+        NoteEditText noteEditText = (NoteEditText) findViewById(R.id.note_edit_view); //获取当前的edit
+        Editable editable = noteEditText.getText();//1.获取text
+        String noteText = editable.toString(); //2.将note内容转换为字符串
+        int length = editable.length(); //内容的长度
+        //3.截取img片段 [local]+uri+[/local]，提取uri。算法效率有待改善可以考虑KMP
+        for(int i = 0; i < length; i++) {
+            for(int j = i; j < length; j++) {
+                String img_fragment = noteText.substring(i, j+1); //img_fragment：关于图片路径的片段
+                if(img_fragment.length() > 15 && img_fragment.endsWith("[/local]") &&
+                        img_fragment.startsWith("[local]")){
+                    int limit = 7;  //[local]为7个字符
+                    int len = img_fragment.length()-15;//[local][/local]共15个字符，剩下的为真正的path长度
+                    String path = img_fragment.substring(limit,limit+len);//获取到了图片路径从[local]之后的len个字符就是path
+                    Bitmap bitmap = null;
+                    Log.d(TAG, "图片的路径是："+path);
+                    try {
+                        bitmap = BitmapFactory.decodeFile(path);//将图片路径解码为图片格式
+                    } catch (Exception e) {
+                        e.printStackTrace();
+                    }
+                    //若图片存在
+                    if(bitmap!=null){
+                        Log.d(TAG, "图片不为null");
+                        ImageSpan imageSpan = new ImageSpan(NoteEditActivity.this, bitmap);
+                        String ss = "[local]" + path + "[/local]";
+                        SpannableString spannableString = new SpannableString(ss);//4.创建一个SpannableString对象，以便插入用ImageSpan对象封装的图像
+
+                        spannableString.setSpan(imageSpan, 0, ss.length(),
+                                Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);//5.将指定的标记对象附加到文本的开始...结束范围
+                        Log.d(TAG, "Create spannable string success!");
+                        Editable edit_text = noteEditText.getEditableText();
+                        edit_text.delete(i,i+len+15); //6.删掉图片路径的文字
+                        edit_text.insert(i, spannableString); //7.在路径的起始位置插入图片
+                    }
+                }
+            }
+        }
+    }
+
+    /**
+     * @method          onActivityResult
+     * @description:    插入图片时：重写onActivityResult()来处理返回的数据,点击插入图片返回后执行
+     * @date:           2024/1/3 19:20
+     * @author:         WuShuxian
+     * @param:
+     * @return:         void
+     */
+    @Override
+    protected void onActivityResult(int requestCode, int resultCode, Intent intent) {
+        super.onActivityResult(requestCode, resultCode, intent);
+        ContentResolver resolver = getContentResolver();
+        switch (requestCode) {
+            case PHOTO_REQUEST:
+                Uri originalUri = intent.getData(); //1.获得图片的真实路径
+                Bitmap bitmap = null;
+                try {
+                    bitmap = BitmapFactory.decodeStream(resolver.openInputStream(originalUri));//2.解码图片
+                } catch (FileNotFoundException e) {
+                    Log.d(TAG, "onActivityResult: get file_exception");
+                    e.printStackTrace();
+                }
+                //3.根据Bitmap对象创建ImageSpan对象
+                if(bitmap != null){
+                    Log.d(TAG, "onActivityResult: bitmap is not null");
+                    ImageSpan imageSpan = new ImageSpan(NoteEditActivity.this, bitmap);
+                    String path = getPath(this,originalUri);
+                    String img_fragment= "[local]" + path + "[/local]";//4.使用[local][/local]将path括起来，用于之后方便识别图片路径在note中的位置
+                    SpannableString spannableString = new SpannableString(img_fragment);//创建一个SpannableString对象，以便插入用ImageSpan对象封装的图像
+                    spannableString.setSpan(imageSpan, 0,
+                            img_fragment.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
+                    NoteEditText e = (NoteEditText) findViewById(R.id.note_edit_view);//5.将选择的图片追加到EditText中光标所在位置
+                    int index = e.getSelectionStart(); //获取光标所在位置
+                    Log.d(TAG, "Index是: " + index);
+                    Editable edit_text = e.getEditableText();
+                    edit_text.insert(index, spannableString); //将图片插入到光标所在位置
+
+                    mWorkingNote.setWorkingText(e.getText().toString());
+                    //6.把改动提交到数据库中,两个数据库表都要改的
+                    ContentResolver contentResolver = getContentResolver();
+                    ContentValues contentValues = new ContentValues();
+                    final long id = mWorkingNote.getNoteId();
+                    contentValues.put("snippet",mWorkingNote.getContent());
+                    contentResolver.update(Uri.parse("content://micode_notes/note"),
+                            contentValues,"_id=?",new String[]{""+id});
+                    ContentValues contentValues1 = new ContentValues();
+                    contentValues1.put("content",mWorkingNote.getContent());
+                    contentResolver.update(Uri.parse("content://micode_notes/data"),
+                            contentValues1,"mime_type=? and note_id=?",
+                            new String[]{"vnd.android.cursor.item/text_note",""+id});
+
+                }else{
+                    Toast.makeText(NoteEditActivity.this, "获取图片失败", Toast.LENGTH_SHORT).show();
+                }
+                break;
+            default:
+                break;
+        }
+    }
+
+    /**
+     * @method          getPath
+     * @description:    获取文件的real path
+     * @date:           2024/1/3 19:22
+     * @author:         WuShuxian
+     * @param:
+     * @return:
+     */
+    public String getPath(final Context context, final Uri uri) {
+
+        final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
+
+        // DocumentProvider
+        if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
+            if (isMediaDocument(uri)) {
+                final String docId = DocumentsContract.getDocumentId(uri);
+                final String[] split = docId.split(":");
+                final String type = split[0];
+
+                Uri contentUri = null;
+                if ("image".equals(type)) {
+                    contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
+                }
+
+                final String selection = "_id=?";
+                final String[] selectionArgs = new String[]{split[1]};
+
+                return getDataColumn(context, contentUri, selection, selectionArgs);
+            }
+        }
+        // Media
+        else if ("content".equalsIgnoreCase(uri.getScheme())) {
+            return getDataColumn(context, uri, null, null);
+        }
+        // File
+        else if ("file".equalsIgnoreCase(uri.getScheme())) {
+            return uri.getPath();
+        }
+        return null;
+    }
+
+    /**
+     * @method          isMediaDocument
+     * @description:    判断是否为媒体文件
+     * @date:           2024/1/3 19:23
+     * @author:         WuShuxian
+     * @param:          uri
+     * @return:
+     */
+    public boolean isMediaDocument(Uri uri) {
+        return "com.android.providers.media.documents".equals(uri.getAuthority());
+    }
+
+    /**
+     * @method          getDataColumn
+     * @description:    获取数据列_获取此 Uri 的数据列的值。这对MediaStore Uris 和其他基于文件的 ContentProvider。
+     * @date:           2024/1/3 19:23
+     * @author:         WuShuxian
+     * @param:
+     * @return:
+     */
+    public String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {
+
+        Cursor cursor = null;
+        final String column = "_data";
+        final String[] projection = {column};
+
+        try {
+            cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
+            if (cursor != null && cursor.moveToFirst()) {
+                final int column_index = cursor.getColumnIndexOrThrow(column);
+                return cursor.getString(column_index);
+            }
+        } finally {
+            if (cursor != null)
+                cursor.close();
+        }
+        return null;
+    }
+
+    /**
+     * @method          checkStoragePermissions
+     * @description:    用于动态申请权限
+     * @date:           2024/1/6 8:58
+     * @author:         WuShuxian
+     * @param:          activity
+     * @return:         void
+     */
+    public static void checkStoragePermissions(Activity activity){
+        try{
+            //监测是否有写/读的权限
+            int permission= ActivityCompat.checkSelfPermission(activity,
+                    "android.permission.WRITE_EXTERNAL_STORAGE");
+            int permission1= ActivityCompat.checkSelfPermission(activity,
+                    "android.permission.READ_EXTERNAL_STORAGE");
+            if(permission != PackageManager.PERMISSION_GRANTED){
+                //没有写的权限，去申请写的权限，或弹出对话框
+                ActivityCompat.requestPermissions(activity, PERMISSIONS_STORAGE,REQUEST_EXTERNAL_STORAGE);
+            }
+            if(permission1 != PackageManager.PERMISSION_GRANTED){
+                //没有读的权限，去申请读的权限，或弹出对话框
+                ActivityCompat.requestPermissions(activity, PERMISSIONS_STORAGE,REQUEST_EXTERNAL_STORAGE);
+            }
+
+        }catch (Exception e){
+            e.printStackTrace();
+        }
+    }
 }

src/main/res/layout/note_edit.xml

@@ -397,4 +397,13 @@
                 android:src="@drawable/selected" />
         </FrameLayout>
     </LinearLayout>
+
+    <ImageButton
+        android:id="@+id/add_img_btn"
+        android:layout_width="51dp"
+        android:layout_height="54dp"
+        android:layout_marginLeft="7dp"
+        android:layout_marginTop="600dp"
+        android:layout_marginBottom="7dp"
+        android:src="@drawable/ic_menu_gallery_new" />
 </FrameLayout>

src/main/res/values/strings.xml

@@ -40,6 +40,7 @@
     <string name="file_name_txt_format">notes_%s.txt</string>
     <!-- notes list string -->
     <string name="format_folder_files_count">(%d)</string>
+    <string name="add_img_btn">Add picture</string>
     <string name="menu_create_folder">New Folder</string>
     <string name="menu_export_text">Export text</string>
     <string name="menu_sync">Sync</string>