src/Notes-master/app/src/main/java/net/micode/notes/ui/NoteEditActivity.java

@@ -30,9 +30,11 @@ import android.content.SharedPreferences;
 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.TextWatcher;
 import android.text.format.DateUtils;
 import android.text.style.BackgroundColorSpan;
 import android.util.Log;
@@ -130,6 +132,9 @@ public class NoteEditActivity extends Activity implements OnClickListener,
 
     private EditText mNoteEditor;
 
+    //字数统计
+    private TextView textView;
+
     private View mNoteEditorPanel;
 
     private WorkingNote mWorkingNote;
@@ -159,8 +164,59 @@ public class NoteEditActivity extends Activity implements OnClickListener,
             return;
         }
         initResources();
+        count();
+    }
+    private String Textchange(String oriText){
+        StringBuffer stringBuffer = new StringBuffer(oriText);
+        int Flag1 = -1;
+        int Flag2 = -1;
+        do {//不计入表示图片的字符
+            Flag1 = stringBuffer.indexOf("<img");
+            Flag2 = stringBuffer.indexOf(">");
+            if (Flag1 != -1 && Flag2 != -1) {
+                stringBuffer = stringBuffer.replace(Flag1, Flag2+1, "");
+            }
+        } while (Flag1 != -1 && Flag2 != -1);
+
+        do {//不计入换行字符
+            Flag1 = stringBuffer.indexOf("\n");
+
+            if (Flag1 != -1){
+                stringBuffer = stringBuffer.replace(Flag1, Flag1+1, "");
+            }
+        } while (Flag1 != -1);
+        do {//不计入空格字符
+            Flag1 = stringBuffer.indexOf(" ");
+
+            if (Flag1 != -1) {
+                stringBuffer = stringBuffer.replace(Flag1, Flag1+1, "");
+            }
+        } while (Flag1 != -1);
+        return stringBuffer.toString();
     }
 
+    private void count() {
+        textView = (TextView) findViewById(R.id.text_num);
+        mNoteEditor.addTextChangedListener(new TextWatcher() {
+            int currentLength = 0;
+
+            @Override
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+
+                textView.setText(String.format(getString(R.string.word_num), currentLength));
+            }
+
+            @Override
+            public void onTextChanged(CharSequence s, int start, int before, int count) {
+                currentLength = Textchange(mNoteEditor.getText().toString()).length();
+            }
+
+            @Override
+            public void afterTextChanged(Editable s) {
+                textView.setText(String.format(getString(R.string.word_num), currentLength));
+            }
+        });
+    }
     /**
      * Current activity may be killed when the memory is low. Once it is killed, for another time
      * user load this activity, we should restore the former state

src/Notes-master/app/src/main/res/layout/note_edit.xml

@@ -46,6 +46,13 @@
                 android:layout_height="wrap_content"
                 android:layout_gravity="center_vertical"
                 android:background="@drawable/title_alert" />
+            //统计字数
+            <TextView
+                android:id="@+id/text_num"
+                android:layout_width="wrap_content"
+                android:layout_height="wrap_content"
+                android:layout_gravity="right|center_vertical"
+                android:layout_marginRight="8dip" />
 
             <TextView
                 android:id="@+id/tv_alert_date"

src/Notes-master/app/src/main/res/values-zh-rCN/strings.xml

@@ -29,6 +29,10 @@
     <string name="note_alert_expired">已过期</string>
     <string name="format_date_ymd">yyyyMMdd</string>
     <string name="format_datetime_mdhm">MM月dd日 kk:mm</string>
+    //字符数
+    <string name="word_num">字符数：%1$d</string>
+
+
     <string name="notealert_ok">知道了</string>
     <string name="notealert_enter">查看</string>
     <string name="note_link_tel">呼叫电话</string>

src/Notes-master/app/src/main/res/values/strings.xml

@@ -35,6 +35,7 @@
     <string name="note_link_email">Send email</string>
     <string name="note_link_web">Browse web</string>
     <string name="note_link_other">Open map</string>
+    <string name="word_num">count——num：%1$d</string>
     <!-- Text export file information -->
     <string name="file_path">/MIUI/notes/</string>
     <string name="file_name_txt_format">notes_%s.txt</string>