6

app/src/main/java/net/micode/notes/ui/PrivateNoteLoginActivity.java

@@ -0,0 +1,39 @@
+package net.micode.notes.ui;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.EditText;
+import android.widget.Toast;
+
+import net.micode.notes.R;
+
+public class PrivateNoteLoginActivity extends Activity {
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_private_note_login);
+
+        EditText etPwd = findViewById(R.id.et_private_pwd);
+        Button btnLogin = findViewById(R.id.btn_private_login);
+
+        btnLogin.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                String pwd = etPwd.getText().toString();
+                if ("123456".equals(pwd)) {
+                    Toast.makeText(PrivateNoteLoginActivity.this, "登录成功", Toast.LENGTH_SHORT).show();
+                    // 标记已登录
+                    getSharedPreferences("private_note", MODE_PRIVATE).edit().putBoolean("is_login", true).apply();
+                    Intent intent = new Intent(PrivateNoteLoginActivity.this, PrivateNotesListActivity.class);
+                    startActivity(intent);
+                    finish();
+                } else {
+                    Toast.makeText(PrivateNoteLoginActivity.this, "密码错误", Toast.LENGTH_SHORT).show();
+                }
+            }
+        });
+    }
+} 

app/src/main/java/net/micode/notes/ui/PrivateNotesListActivity.java

@@ -0,0 +1,82 @@
+package net.micode.notes.ui;
+
+import android.app.Activity;
+import android.content.ContentResolver;
+import android.content.Context;
+import android.content.Intent;
+import android.content.SharedPreferences;
+import android.database.Cursor;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.Button;
+import android.widget.ListView;
+import net.micode.notes.R;
+import net.micode.notes.data.Notes;
+import net.micode.notes.data.Notes.NoteColumns;
+import net.micode.notes.ui.NotesListAdapter;
+
+public class PrivateNotesListActivity extends Activity {
+    private NotesListAdapter mNotesListAdapter;
+    private ListView mNotesListView;
+    private Button mAddNewNote;
+    private Button mLogout;
+    private ContentResolver mContentResolver;
+    private SharedPreferences sp;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        sp = getSharedPreferences("private_note", Context.MODE_PRIVATE);
+        if (!sp.getBoolean("is_login", false)) {
+            startActivity(new Intent(this, PrivateNoteLoginActivity.class));
+            finish();
+            return;
+        }
+        setContentView(R.layout.note_list);
+        mContentResolver = getContentResolver();
+        mNotesListView = findViewById(R.id.notes_list);
+        mAddNewNote = findViewById(R.id.btn_new_note);
+        mNotesListAdapter = new NotesListAdapter(this);
+        mNotesListView.setAdapter(mNotesListAdapter);
+        mAddNewNote.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                Intent intent = new Intent(PrivateNotesListActivity.this, NoteEditActivity.class);
+                intent.setAction(Intent.ACTION_INSERT_OR_EDIT);
+                intent.putExtra("is_private", true);
+                startActivity(intent);
+            }
+        });
+        mLogout = new Button(this);
+        mLogout.setText("退出私密便签");
+        mLogout.setOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                sp.edit().putBoolean("is_login", false).apply();
+                Intent intent = new Intent(PrivateNotesListActivity.this, NotesListActivity.class);
+                intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP | Intent.FLAG_ACTIVITY_NEW_TASK);
+                startActivity(intent);
+                finish();
+            }
+        });
+        ((android.widget.LinearLayout) findViewById(android.R.id.content).getRootView().findViewById(R.id.notes_list).getParent()).addView(mLogout);
+        queryPrivateNotes();
+    }
+
+    private void queryPrivateNotes() {
+        String selection = "is_private=?";
+        String[] selectionArgs = new String[]{"1"};
+        Cursor cursor = mContentResolver.query(Notes.CONTENT_NOTE_URI, null, selection, selectionArgs, null);
+        mNotesListAdapter.changeCursor(cursor);
+    }
+
+    @Override
+    protected void onResume() {
+        super.onResume();
+        if (!sp.getBoolean("is_login", false)) {
+            finish();
+            return;
+        }
+        queryPrivateNotes();
+    }
+} 

app/src/main/res/layout/activity_private_note_login.xml

@@ -0,0 +1,19 @@
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="vertical" android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:gravity="center"
+    android:padding="32dp">
+
+    <EditText
+        android:id="@+id/et_private_pwd"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:hint="请输入密码"
+        android:inputType="textPassword"/>
+
+    <Button
+        android:id="@+id/btn_private_login"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="登录"/>
+</LinearLayout>