質問編集履歴

回答がつかないため一度

2021/10/31 08:46

投稿

kaame

スコア0

test CHANGED Viewed

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@@ -1,44 +1,10 @@
 ### 前提・実現したいこと
-開発環境　androidstudio
-言語 java
-todoリストを作っています。
-遷移して引き継いだ、時間とやるべきことをRist_Activityの追加ボタン押すことによって、Rist_Activityに表示しています。
-やるべきこと、時間はデータベースに保存ができたのですが、チェックボックスの状態の保存方法が分からずに困っています。
-また、状態判定については、
-CheckBox checkbox = findViewById(R.id.checkBox);
- if(checkbox.isSelected())
- Log.i("MyTAG", "trueです。");
-else
- Log.i("MyTAG", "はfalseです。");
-のように判定できると思うのですが、
-今回は追加ボタンを押すごとにレコードが増えるのに対し、idはcheckBoxの一つなので、各レコードのチェックボックスの区別がつかずにいます。
-また、get()メソッドもうまく使えないため、どのように区別すればいいのでしょうか。
-このコードたちを例に状態判定方法、データベースの登録方法の二つを教えてくれるとありがたいです。
@@ -60,492 +26,6 @@
 ```ここに言語名を入力
-RistActivity.java
-public class RistActivity extends AppCompatActivity {
-    private static final Object Tag = "MainActivity";
-    private TaskDbHelper mHelper;
-    private ListView mTaskListView;
-    private ArrayAdapter<String> mAdapter;
-            @Override
-            protected void onCreate(Bundle savedInstanceState) {
-                super.onCreate(savedInstanceState);
-                setContentView(R.layout.activity_rist);
-                Intent intentrist = getIntent();
-                String tenm = intentrist.getStringExtra("tenm");//渡されたデータ取得 tenm
-                String inputStr = intentrist.getStringExtra("inputStr");//渡
-                String bt_check01 =intentrist.getStringExtra("bt_check");
-                Button button = findViewById(R.id.button);
-                TextView textView5 = findViewById(R.id.textView5);
-                findViewById(R.id.textView5).setVisibility(View.INVISIBLE); //見えなくする
-                findViewById(R.id.textView6).setVisibility(View.INVISIBLE);
-                textView5.setText(bt_check01);
-                String getok = String.valueOf(textView5.getText()); //条件分岐用変数
-                if (getok.equals("ok")) {
-                    button.setEnabled(true);
-                }else {
-                    button.setEnabled(false);
-                }
-             //戻るメニュー表示
-                ActionBar actionBar = getSupportActionBar();
-                actionBar.setDisplayHomeAsUpEnabled(true);
-                //終了
-                //日付　出力コード　開始
-                LocalDateTime time = LocalDateTime.now(); //現在の日付取得
-                DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy年MM月dd日"); // フォーマット決定
-                String calender = (time.format(dtf));
-                mHelper = new TaskDbHelper(this);
-                mTaskListView =(ListView) findViewById(R.id.listView);
-        SQLiteDatabase db = mHelper.getReadableDatabase();
-        Cursor cursor = db.query(TaskContract.TaskEntry.TABLE,
-                new String[]{TaskContract.TaskEntry._ID, TaskContract.TaskEntry.COL_TASK_TITLE},
-                null, null, null, null, null);
-        cursor.close();
-        db.close();
-                TextView task = findViewById(R.id.textView4);
-                if (getok.equals("ok")) {
-                    task.setText(tenm + inputStr + "を追加しますか？");
-                }else {
-                    task.setText("追加はタスク入力画面で行ってください");
-                }
-                updateUI();
-                findViewById(R.id.button).setOnClickListener(new View.OnClickListener() {
-                    @Override
-                    public void onClick(View v) {
-                        Context context = getApplicationContext();
-                        Toast.makeText(context , "保存されました。", Toast.LENGTH_LONG).show();
-                        TextView textView6 = findViewById(R.id.textView6);
-                        findViewById(R.id.textView6).setVisibility(View.INVISIBLE);
-                        textView6.setText(tenm+" "+" "+" "+inputStr);
-                        String gettask = String.valueOf(textView6.getText());
-                        SQLiteDatabase db = mHelper.getWritableDatabase();
-                        ContentValues values = new ContentValues();
-                        values.put(TaskContract.TaskEntry.COL_TASK_TITLE, gettask);
-                        db.insertWithOnConflict(TaskContract.TaskEntry.TABLE,
-                                null,
-                                values,
-                                SQLiteDatabase.CONFLICT_REPLACE);
-                        db.close();
-                        updateUI();
-                    }
-                });
-    }
-              //戻るメニューメソッド　開始
-              @Override
-              public  boolean onOptionsItemSelected(MenuItem item){
-              int itemId = item.getItemId();
-              if(itemId==android.R.id.home){
-              finish();
-              }
-             return super.onOptionsItemSelected(item);
-           }//終了
-    private void updateUI() {
-        ArrayList<String> taskList = new ArrayList<>();
-        for (int i=0;i<taskList.size();i++){
-        }
-        SQLiteDatabase db = mHelper.getReadableDatabase();
-        Cursor cursor = db.query(TaskContract.TaskEntry.TABLE,
-                new String[]{TaskContract.TaskEntry._ID, TaskContract.TaskEntry.COL_TASK_TITLE},
-                null, null, null, null, null);
-        while (cursor.moveToNext()) {
-            int idx = cursor.getColumnIndex(TaskContract.TaskEntry.COL_TASK_TITLE);
-            taskList.add(cursor.getString(idx));
-        }
-        if (mAdapter == null) {
-            mAdapter = new ArrayAdapter<>(this,
-                    R.layout.list,
-                    R.id.task_title,
-                    taskList);
-            mTaskListView.setAdapter(mAdapter);
-        } else {
-            mAdapter.clear();
-            mAdapter.addAll(taskList);
-            mAdapter.notifyDataSetChanged();
-        }
-        cursor.close();
-        db.close();
-    }
-    public void deleteTask(View view) {
-        View parent = (View) view.getParent();
-        TextView taskTextView = (TextView) parent.findViewById(R.id.task_title);
-        String task = String.valueOf(taskTextView.getText());
-        SQLiteDatabase db = mHelper.getWritableDatabase();
-        db.delete(TaskContract.TaskEntry.TABLE,
-                TaskContract.TaskEntry.COL_TASK_TITLE + " = ?",
-                new String[]{task});
-        db.close();
-        updateUI();
-    }
-}
 ```
-```ここに言語名を入力
-TaskContract.java
-public class TaskContract {
-    public static final String DB_NAME = "com.aziflaj.todolist.db";
-    public static final int DB_VERSION = 1;
-    public class TaskEntry implements BaseColumns {
-        public static final String TABLE = "tasks";
-        public static final String COL_TASK_TITLE = "title";
-    }
-}
-```
-```ここに言語名を入力
-TaskDbHelper.java
-public class TaskDbHelper extends SQLiteOpenHelper {
-    public TaskDbHelper(Context context) {
-        super(context, TaskContract.DB_NAME, null, TaskContract.DB_VERSION);
-    }
-    @Override
-    public void onCreate(SQLiteDatabase db) {
-        String createTable = "CREATE TABLE " + TaskContract.TaskEntry.TABLE + " ( " +
-                TaskContract.TaskEntry._ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " +
-                TaskContract.TaskEntry.COL_TASK_TITLE + " TEXT NOT NULL);";
-        db.execSQL(createTable);
-    }
-    @Override
-    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
-        db.execSQL("DROP TABLE IF EXISTS " + TaskContract.TaskEntry.TABLE);
-        onCreate(db);
-    }
-}
-```
-```ここに言語名を入力
-activity_list.xml
-<?xml version="1.0" encoding="utf-8"?>
-<LinearLayout
-    xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:app="http://schemas.android.com/apk/res-auto"
-    xmlns:tools="http://schemas.android.com/tools"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:orientation="vertical"
-    tools:context=".MainActivity">
-    <ListView
-        android:id="@+id/listView"
-        android:layout_width="387dp"
-        android:layout_height="450dp"
-        tools:layout_editor_absoluteX="1dp"
-        tools:layout_editor_absoluteY="1dp" />
-    <TextView
-        android:id="@+id/textView4"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:text="TextView" />
-    <Button
-        android:id="@+id/button"
-        android:layout_width="265dp"
-        android:layout_height="wrap_content"
-        android:text="追加" />
-    <TextView
-        android:id="@+id/textView5"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:text="TextView" />
-    <TextView
-        android:id="@+id/textView6"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:text="TextView" />
-    <TextView
-        android:id="@+id/textView7"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:text="TextView" />
-</LinearLayout>
-```

レイアウトのコードの追加　activity_list.xmlとlist.xml

2021/10/31 08:46

投稿

kaame

スコア0

test CHANGED Viewed

File without changes

test CHANGED Viewed

@@ -436,16 +436,116 @@
+```ここに言語名を入力
+activity_list.xml
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical"
+    tools:context=".MainActivity">
+    <ListView
+        android:id="@+id/listView"
+        android:layout_width="387dp"
+        android:layout_height="450dp"
+        tools:layout_editor_absoluteX="1dp"
+        tools:layout_editor_absoluteY="1dp" />
+    <TextView
+        android:id="@+id/textView4"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="TextView" />
-### 試したこと
+    <Button
-### 補足情報（FW/ツールのバージョンなど）
+        android:id="@+id/button"
+        android:layout_width="265dp"
+        android:layout_height="wrap_content"
+        android:text="追加" />
+    <TextView
+        android:id="@+id/textView5"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="TextView" />
+    <TextView
+        android:id="@+id/textView6"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="TextView" />
+    <TextView
+        android:id="@+id/textView7"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:text="TextView" />
+</LinearLayout>
+```

コードを、、、の中にいれました

2021/10/28 09:02

投稿

kaame

スコア0

test CHANGED Viewed

File without changes

test CHANGED Viewed

@@ -62,365 +62,377 @@
 RistActivity.java
+public class RistActivity extends AppCompatActivity {
+    private static final Object Tag = "MainActivity";
+    private TaskDbHelper mHelper;
+    private ListView mTaskListView;
+    private ArrayAdapter<String> mAdapter;
+            @Override
+            protected void onCreate(Bundle savedInstanceState) {
+                super.onCreate(savedInstanceState);
+                setContentView(R.layout.activity_rist);
+                Intent intentrist = getIntent();
+                String tenm = intentrist.getStringExtra("tenm");//渡されたデータ取得 tenm
+                String inputStr = intentrist.getStringExtra("inputStr");//渡
+                String bt_check01 =intentrist.getStringExtra("bt_check");
+                Button button = findViewById(R.id.button);
+                TextView textView5 = findViewById(R.id.textView5);
+                findViewById(R.id.textView5).setVisibility(View.INVISIBLE); //見えなくする
+                findViewById(R.id.textView6).setVisibility(View.INVISIBLE);
+                textView5.setText(bt_check01);
+                String getok = String.valueOf(textView5.getText()); //条件分岐用変数
+                if (getok.equals("ok")) {
+                    button.setEnabled(true);
+                }else {
+                    button.setEnabled(false);
+                }
+             //戻るメニュー表示
+                ActionBar actionBar = getSupportActionBar();
+                actionBar.setDisplayHomeAsUpEnabled(true);
+                //終了
+                //日付　出力コード　開始
+                LocalDateTime time = LocalDateTime.now(); //現在の日付取得
+                DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy年MM月dd日"); // フォーマット決定
+                String calender = (time.format(dtf));
+                mHelper = new TaskDbHelper(this);
+                mTaskListView =(ListView) findViewById(R.id.listView);
+        SQLiteDatabase db = mHelper.getReadableDatabase();
+        Cursor cursor = db.query(TaskContract.TaskEntry.TABLE,
+                new String[]{TaskContract.TaskEntry._ID, TaskContract.TaskEntry.COL_TASK_TITLE},
+                null, null, null, null, null);
+        cursor.close();
+        db.close();
+                TextView task = findViewById(R.id.textView4);
+                if (getok.equals("ok")) {
+                    task.setText(tenm + inputStr + "を追加しますか？");
+                }else {
+                    task.setText("追加はタスク入力画面で行ってください");
+                }
+                updateUI();
+                findViewById(R.id.button).setOnClickListener(new View.OnClickListener() {
+                    @Override
+                    public void onClick(View v) {
+                        Context context = getApplicationContext();
+                        Toast.makeText(context , "保存されました。", Toast.LENGTH_LONG).show();
+                        TextView textView6 = findViewById(R.id.textView6);
+                        findViewById(R.id.textView6).setVisibility(View.INVISIBLE);
+                        textView6.setText(tenm+" "+" "+" "+inputStr);
+                        String gettask = String.valueOf(textView6.getText());
+                        SQLiteDatabase db = mHelper.getWritableDatabase();
+                        ContentValues values = new ContentValues();
+                        values.put(TaskContract.TaskEntry.COL_TASK_TITLE, gettask);
+                        db.insertWithOnConflict(TaskContract.TaskEntry.TABLE,
+                                null,
+                                values,
+                                SQLiteDatabase.CONFLICT_REPLACE);
+                        db.close();
+                        updateUI();
+                    }
+                });
+    }
+              //戻るメニューメソッド　開始
+              @Override
+              public  boolean onOptionsItemSelected(MenuItem item){
+              int itemId = item.getItemId();
+              if(itemId==android.R.id.home){
+              finish();
+              }
+             return super.onOptionsItemSelected(item);
+           }//終了
+    private void updateUI() {
+        ArrayList<String> taskList = new ArrayList<>();
+        for (int i=0;i<taskList.size();i++){
+        }
+        SQLiteDatabase db = mHelper.getReadableDatabase();
+        Cursor cursor = db.query(TaskContract.TaskEntry.TABLE,
+                new String[]{TaskContract.TaskEntry._ID, TaskContract.TaskEntry.COL_TASK_TITLE},
+                null, null, null, null, null);
+        while (cursor.moveToNext()) {
+            int idx = cursor.getColumnIndex(TaskContract.TaskEntry.COL_TASK_TITLE);
+            taskList.add(cursor.getString(idx));
+        }
+        if (mAdapter == null) {
+            mAdapter = new ArrayAdapter<>(this,
+                    R.layout.list,
+                    R.id.task_title,
+                    taskList);
+            mTaskListView.setAdapter(mAdapter);
+        } else {
+            mAdapter.clear();
+            mAdapter.addAll(taskList);
+            mAdapter.notifyDataSetChanged();
+        }
+        cursor.close();
+        db.close();
+    }
+    public void deleteTask(View view) {
+        View parent = (View) view.getParent();
+        TextView taskTextView = (TextView) parent.findViewById(R.id.task_title);
+        String task = String.valueOf(taskTextView.getText());
+        SQLiteDatabase db = mHelper.getWritableDatabase();
+        db.delete(TaskContract.TaskEntry.TABLE,
+                TaskContract.TaskEntry.COL_TASK_TITLE + " = ?",
+                new String[]{task});
+        db.close();
+        updateUI();
+    }
+}
 ```
-public class RistActivity extends AppCompatActivity {
-    private static final Object Tag = "MainActivity";
-    private TaskDbHelper mHelper;
-    private ListView mTaskListView;
-    private ArrayAdapter<String> mAdapter;
-            @Override
-            protected void onCreate(Bundle savedInstanceState) {
-                super.onCreate(savedInstanceState);
-                setContentView(R.layout.activity_rist);
-                Intent intentrist = getIntent();
-                String tenm = intentrist.getStringExtra("tenm");//渡されたデータ取得 tenm
-                String inputStr = intentrist.getStringExtra("inputStr");//渡
-                String bt_check01 =intentrist.getStringExtra("bt_check");
-                Button button = findViewById(R.id.button);
-                TextView textView5 = findViewById(R.id.textView5);
-                findViewById(R.id.textView5).setVisibility(View.INVISIBLE); //見えなくする
-                findViewById(R.id.textView6).setVisibility(View.INVISIBLE);
-                textView5.setText(bt_check01);
-                String getok = String.valueOf(textView5.getText()); //条件分岐用変数
-                if (getok.equals("ok")) {
-                    button.setEnabled(true);
-                }else {
-                    button.setEnabled(false);
-                }
-             //戻るメニュー表示
-                ActionBar actionBar = getSupportActionBar();
-                actionBar.setDisplayHomeAsUpEnabled(true);
-                //終了
-                //日付　出力コード　開始
-                LocalDateTime time = LocalDateTime.now(); //現在の日付取得
-                DateTimeFormatter dtf = DateTimeFormatter.ofPattern("yyyy年MM月dd日"); // フォーマット決定
-                String calender = (time.format(dtf));
-                mHelper = new TaskDbHelper(this);
-                mTaskListView =(ListView) findViewById(R.id.listView);
-        SQLiteDatabase db = mHelper.getReadableDatabase();
-        Cursor cursor = db.query(TaskContract.TaskEntry.TABLE,
-                new String[]{TaskContract.TaskEntry._ID, TaskContract.TaskEntry.COL_TASK_TITLE},
-                null, null, null, null, null);
-        cursor.close();
-        db.close();
-                TextView task = findViewById(R.id.textView4);
-                if (getok.equals("ok")) {
-                    task.setText(tenm + inputStr + "を追加しますか？");
-                }else {
-                    task.setText("追加はタスク入力画面で行ってください");
-                }
-                updateUI();
-                findViewById(R.id.button).setOnClickListener(new View.OnClickListener() {
-                    @Override
-                    public void onClick(View v) {
-                        Context context = getApplicationContext();
-                        Toast.makeText(context , "保存されました。", Toast.LENGTH_LONG).show();
-                        TextView textView6 = findViewById(R.id.textView6);
-                        findViewById(R.id.textView6).setVisibility(View.INVISIBLE);
-                        textView6.setText(tenm+" "+" "+" "+inputStr);
-                        String gettask = String.valueOf(textView6.getText());
-                        SQLiteDatabase db = mHelper.getWritableDatabase();
-                        ContentValues values = new ContentValues();
-                        values.put(TaskContract.TaskEntry.COL_TASK_TITLE, gettask);
-                        db.insertWithOnConflict(TaskContract.TaskEntry.TABLE,
-                                null,
-                                values,
-                                SQLiteDatabase.CONFLICT_REPLACE);
-                        db.close();
-                        updateUI();
-                    }
-                });
-    }
-              //戻るメニューメソッド　開始
-              @Override
-              public  boolean onOptionsItemSelected(MenuItem item){
-              int itemId = item.getItemId();
-              if(itemId==android.R.id.home){
-              finish();
-              }
-             return super.onOptionsItemSelected(item);
-           }//終了
-    private void updateUI() {
-        ArrayList<String> taskList = new ArrayList<>();
-        for (int i=0;i<taskList.size();i++){
-        }
-        SQLiteDatabase db = mHelper.getReadableDatabase();
-        Cursor cursor = db.query(TaskContract.TaskEntry.TABLE,
-                new String[]{TaskContract.TaskEntry._ID, TaskContract.TaskEntry.COL_TASK_TITLE},
-                null, null, null, null, null);
-        while (cursor.moveToNext()) {
-            int idx = cursor.getColumnIndex(TaskContract.TaskEntry.COL_TASK_TITLE);
-            taskList.add(cursor.getString(idx));
-        }
-        if (mAdapter == null) {
-            mAdapter = new ArrayAdapter<>(this,
-                    R.layout.list,
-                    R.id.task_title,
-                    taskList);
-            mTaskListView.setAdapter(mAdapter);
-        } else {
-            mAdapter.clear();
-            mAdapter.addAll(taskList);
-            mAdapter.notifyDataSetChanged();
-        }
-        cursor.close();
-        db.close();
-    }
-    public void deleteTask(View view) {
-        View parent = (View) view.getParent();
-        TextView taskTextView = (TextView) parent.findViewById(R.id.task_title);
-        String task = String.valueOf(taskTextView.getText());
-        SQLiteDatabase db = mHelper.getWritableDatabase();
-        db.delete(TaskContract.TaskEntry.TABLE,
-                TaskContract.TaskEntry.COL_TASK_TITLE + " = ?",
-                new String[]{task});
-        db.close();
-        updateUI();
-    }
+```ここに言語名を入力
+TaskContract.java
+public class TaskContract {
+    public static final String DB_NAME = "com.aziflaj.todolist.db";
+    public static final int DB_VERSION = 1;
+    public class TaskEntry implements BaseColumns {
+        public static final String TABLE = "tasks";
+        public static final String COL_TASK_TITLE = "title";
+    }
 }
+```
 ```ここに言語名を入力
-TaskContract.java
+TaskDbHelper.java
+public class TaskDbHelper extends SQLiteOpenHelper {
+    public TaskDbHelper(Context context) {
+        super(context, TaskContract.DB_NAME, null, TaskContract.DB_VERSION);
+    }
+    @Override
+    public void onCreate(SQLiteDatabase db) {
+        String createTable = "CREATE TABLE " + TaskContract.TaskEntry.TABLE + " ( " +
+                TaskContract.TaskEntry._ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " +
+                TaskContract.TaskEntry.COL_TASK_TITLE + " TEXT NOT NULL);";
+        db.execSQL(createTable);
+    }
+    @Override
+    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
+        db.execSQL("DROP TABLE IF EXISTS " + TaskContract.TaskEntry.TABLE);
+        onCreate(db);
+    }
+}
 ```
-public class TaskContract {
-    public static final String DB_NAME = "com.aziflaj.todolist.db";
-    public static final int DB_VERSION = 1;
-    public class TaskEntry implements BaseColumns {
-        public static final String TABLE = "tasks";
-        public static final String COL_TASK_TITLE = "title";
-    }
-}
-```ここに言語名を入力
-TaskDbHelper.java
-```
-public class TaskDbHelper extends SQLiteOpenHelper {
-    public TaskDbHelper(Context context) {
-        super(context, TaskContract.DB_NAME, null, TaskContract.DB_VERSION);
-    }
-    @Override
-    public void onCreate(SQLiteDatabase db) {
-        String createTable = "CREATE TABLE " + TaskContract.TaskEntry.TABLE + " ( " +
-                TaskContract.TaskEntry._ID + " INTEGER PRIMARY KEY AUTOINCREMENT, " +
-                TaskContract.TaskEntry.COL_TASK_TITLE + " TEXT NOT NULL);";
-        db.execSQL(createTable);
-    }
-    @Override
-    public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
-        db.execSQL("DROP TABLE IF EXISTS " + TaskContract.TaskEntry.TABLE);
-        onCreate(db);
-    }
-}