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src/Notes-master1/app/src/main/java/net/micode/notes/data/LoginData.java

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+package net.micode.notes.data;
+
+import android.content.Context;
+
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.util.HashMap;
+
+public class LoginData {
+    static String fileName = "LoginData";
+    private static HashMap<String,String> loginData = new HashMap<String,String >();
+
+    //获取登录数据
+    public HashMap<String,String> getLoginData(){
+        return loginData;
+    }
+
+    //注册时添加
+    public static void write(String account,String password,Context context) throws IOException {
+        FileOutputStream fos = null;
+        try {
+            //获取文件的输出流对象fos
+            fos = context.openFileOutput(fileName, Context.MODE_PRIVATE);
+            //将数据转换为字节码的形式写入data.txt文件中
+            fos.write((account + ":" + password).getBytes());
+        } catch (Exception e) {
+            e.printStackTrace();
+        } finally {
+            try {
+                if (fos != null) {
+                    fos.close();  //关闭输出流
+                }
+            } catch (IOException e) {
+                e.printStackTrace();
+            }
+        }
+    }
+
+        //读文件
+        public static void read (Context context){
+            String content = "";
+            FileInputStream fis = null;
+            try {
+                fis = context.openFileInput(fileName); //获取文件的输入流对象fis
+                byte[] buffer = new byte[fis.available()]; //获取文件长度，创建缓冲区，将输入流对象中的数据转换为字节码的形式
+                fis.read(buffer);//通过read()方法读取字节码中的数据，读取到buffer缓冲区
+                content = new String(buffer); //将获取的字节码转换为字符串
+                String[] infos = content.split(":");//将字符串以“：”分隔后形成一个数组的形式
+                loginData.put(infos[0],infos[1]);   //将数组中的第一个数据放入userMap集合中
+                 //将数组中的第二个数据放入userMap集合中
+            } catch (Exception e) {
+                e.printStackTrace();
+            } finally {
+                try {
+                    if (fis != null) {
+                        fis.close(); //关闭输入流
+                    }
+                } catch (IOException e) {
+                    e.printStackTrace();
+                }
+            }
+        }
+
+
+        //添加到map
+        public static void addLoginData (String account, String password){
+            loginData.put(account, password);
+        }
+}

src/Notes-master1/app/src/main/java/net/micode/notes/tool/CheckUtils.java

@@ -0,0 +1,33 @@
+package net.micode.notes.tool;
+
+import android.content.Context;
+
+import net.micode.notes.data.LoginData;
+
+import java.io.IOException;
+import java.util.HashMap;
+import java.util.Iterator;
+import java.util.Map;
+
+public class CheckUtils {
+    public LoginData loginData = new LoginData();
+
+    public CheckUtils(Context context) throws IOException, ClassNotFoundException {
+        loginData.read(context);
+    }
+
+    //验证
+    public boolean check(String account, String password){
+        HashMap<String,String> data = loginData.getLoginData();
+        Iterator<HashMap.Entry<String, String>> it = data.entrySet().iterator();
+        while(it.hasNext()){
+            Map.Entry<String,String> entry = it.next();
+            String account1 = entry.getKey();
+            String password1 = entry.getValue();
+            if(account1.equals(account) && password1.equals(password)){
+                return true;
+            }
+        }
+        return false;
+    }
+}

src/Notes-master1/app/src/main/java/net/micode/notes/tool/PictureaddUtils.java

@@ -0,0 +1,147 @@
+package net.micode.notes.tool;
+
+import android.content.Context;
+import android.database.Cursor;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.net.Uri;
+import android.os.Build;
+import android.provider.DocumentsContract;
+import android.provider.MediaStore;
+import android.text.Editable;
+import android.text.Spannable;
+import android.text.SpannableString;
+import android.text.style.ImageSpan;
+import android.util.Log;
+
+import net.micode.notes.ui.NoteEditText;
+
+public class PictureaddUtils {
+
+    public void convertToImage(NoteEditText noteEditText, String TAG, Context NoteEditActivity) {
+        //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, 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
+                    }
+                }
+            }
+        }
+    }
+
+    //获取文件的real path
+    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)) {
+            // ExternalStorageProvider
+//            if (isExternalStorageDocument(uri)) {
+//                final String docId = DocumentsContract.getDocumentId(uri);
+//                final String[] split = docId.split(":");
+//                final String type = split[0];
+//
+//                if ("primary".equalsIgnoreCase(type)) {
+//                    return Environment.getExternalStorageDirectory() + "/" + split[1];
+//                }
+//            }
+//            // DownloadsProvider
+//            else if (isDownloadsDocument(uri)) {
+//                final String id = DocumentsContract.getDocumentId(uri);
+//                final Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
+//                return getDataColumn(context, contentUri, null, null);
+//            }
+            // MediaProvider
+//            else
+            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;
+    }
+
+    //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。
+    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;
+    }
+
+    //是否为外部存储文件
+//    public boolean isExternalStorageDocument(Uri uri) {
+//        return "com.android.externalstorage.documents".equals(uri.getAuthority());
+//    }
+//
+//    //是否为下载文件
+//    public boolean isDownloadsDocument(Uri uri) {
+//        return "com.android.providers.downloads.documents".equals(uri.getAuthority());
+//    }
+
+    //是否为媒体文件
+    public boolean isMediaDocument(Uri uri) {
+        return "com.android.providers.media.documents".equals(uri.getAuthority());
+    }
+}

src/Notes-master1/app/src/main/java/net/micode/notes/ui/LoginActivity.java

@@ -0,0 +1,135 @@
+package net.micode.notes.ui;
+
+import android.app.Activity;
+import android.app.AlertDialog;
+import android.app.Dialog;
+import android.content.Intent;
+import android.os.Bundle;
+import android.text.Editable;
+import android.text.TextWatcher;
+import android.util.Log;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.Toast;
+
+import net.micode.notes.R;
+import net.micode.notes.tool.CheckUtils;
+
+import java.io.IOException;
+import java.util.Timer;
+import java.util.zip.Inflater;
+
+public class LoginActivity extends Activity {
+     String account;
+     String password;
+
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        this.setContentView(R.layout.login);
+
+        //保存输入信息
+        EditText inputAccount = (EditText)findViewById(R.id.login_aacount);
+        EditText inputPassword = (EditText) findViewById(R.id.login_password);
+
+        inputAccount.addTextChangedListener(new TextWatcher() {
+            @Override
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+
+            }
+
+            @Override
+            public void onTextChanged(CharSequence s, int start, int before, int count) {
+            }
+
+            @Override
+            public void afterTextChanged(Editable s) {
+                account = s.toString();
+            }
+        });
+        inputPassword.addTextChangedListener(new TextWatcher() {
+            @Override
+            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
+
+            }
+
+            @Override
+            public void onTextChanged(CharSequence s, int start, int before, int count) {
+
+            }
+
+            @Override
+            public void afterTextChanged(Editable s) {
+                password = s.toString();
+            }
+        });
+
+        //登录按钮
+        Button loginButton = (Button) findViewById(R.id.login_accept);
+        loginButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                CheckUtils checkUtils = null;
+                try {
+                    checkUtils = new CheckUtils(LoginActivity.this);
+                } catch (IOException e) {
+                    throw new RuntimeException(e);
+                } catch (ClassNotFoundException e) {
+                    throw new RuntimeException(e);
+                }
+
+                if(checkUtils.check(account,password)){
+                        Intent intent = new Intent(LoginActivity.this,NoteEditActivity.class);
+                        intent.setAction(Intent.ACTION_VIEW);
+                        startActivity(intent);
+                    }
+                    else{
+                        Toast checkErrorToast = Toast.makeText(LoginActivity.this,R.string.check_error,Toast.LENGTH_SHORT);
+                        checkErrorToast.show();
+                    }
+            }
+        });
+
+        //注册按钮
+        Button registerButton = (Button) findViewById(R.id.login_register);
+        registerButton.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                //输入非空
+                if(account != null && password != null) {
+                    CheckUtils checkUtils = null;
+                    try {
+                        checkUtils = new CheckUtils(LoginActivity.this);
+                    } catch (IOException e) {
+                        throw new RuntimeException(e);
+                    } catch (ClassNotFoundException e) {
+                        throw new RuntimeException(e);
+                    }
+                    try {
+                        checkUtils.loginData.write(account,password,LoginActivity.this);
+                    } catch (IOException e) {
+                        throw new RuntimeException(e);
+                    }
+
+                    Toast registerOKToast = Toast.makeText(LoginActivity.this, R.string.register_ok, Toast.LENGTH_SHORT);
+                    registerOKToast.show();
+
+                    Intent intent = new Intent(LoginActivity.this, NoteEditActivity.class);
+                    intent.setAction(Intent.ACTION_VIEW);
+                    startActivity(intent);
+                }
+                else {
+                    account = null;
+                    password = null;
+
+                    Toast toast = Toast.makeText(LoginActivity.this,R.string.input_error,Toast.LENGTH_SHORT);
+                    toast.show();
+                }
+            }
+        });
+    }
+
+}