添加convertToImage()方法

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

@@ -27,14 +27,18 @@ import android.content.Context;
 import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.SharedPreferences;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
 import android.graphics.Paint;
 import android.os.Bundle;
 import android.preference.PreferenceManager;
+import android.text.Editable;
 import android.text.Spannable;
 import android.text.SpannableString;
 import android.text.TextUtils;
 import android.text.format.DateUtils;
 import android.text.style.BackgroundColorSpan;
+import android.text.style.ImageSpan;
 import android.util.Log;
 import android.view.LayoutInflater;
 import android.view.Menu;
@@ -880,4 +884,45 @@ public class NoteEditActivity extends Activity implements OnClickListener,
     private void showToast(int resId, int duration) {
         Toast.makeText(this, resId, duration).show();
     }
+    //路径字符串格式 转换为 图片image格式
+    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
+        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
+                    //[local][/local]共15个字符，剩下的为真正的path长度
+                    int len = img_fragment.length()-15;
+                    //从[local]之后的len个字符就是path
+                    String path = img_fragment.substring(limit,limit+len);//获取到了图片路径
+                    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();
+                    }
+                    if(bitmap!=null){  //若图片存在
+                        Log.d(TAG, "图片不为null");
+                        ImageSpan imageSpan = new ImageSpan(NoteEditActivity.this, bitmap);
+                        //4.创建一个SpannableString对象，以便插入用ImageSpan对象封装的图像
+                        String ss = "[local]" + path + "[/local]";
+                        SpannableString spannableString = new SpannableString(ss);
+                        //5.将指定的标记对象附加到文本的开始...结束范围
+                        spannableString.setSpan(imageSpan, 0, ss.length(), Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
+                        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
+                    }
+                }
+            }
+        }
+    }
+
 }