Question

我在xml中用滚动视图（水平）创建了一个线性布局，按钮数量我在数据库中也有一个表“TABLE_SUBJECT”。

我需要将主题设置为数据库中的按钮，但我不明白该怎么做。我搜索了很多但没有找到任何帮助。

请提供一些提示或参考。

这是我的代码：

main.xml中

<HorizontalScrollView android:layout_width="fill_parent"
 android:id="@+id/horizontalScrollView1"
  android:background="@color/myMaroonColor" 
  android:layout_height="wrap_content">
    <LinearLayout android:id="@+id/linearLayout1" 
    android:layout_width="fill_parent"
     android:layout_height="62dp" >
     <!--  android:background="@drawable/qaapti"-->

        <Button android:textSize="15px" android:id="@+id/button9" android:gravity="center|bottom" android:textColor="@color/myWhiteColor" android:drawableTop="@drawable/math" android:text="@string/HomePage_Math" android:background="@color/myMaroonColor" android:layout_width="54dp" android:layout_height="wrap_content" android:clickable="true"></Button>
        <Button android:textSize="15px" android:id="@+id/button11" android:gravity="center|bottom" android:layout_width="54dp" android:textColor="@color/myWhiteColor" android:drawableTop="@drawable/stat" android:text="@string/HomePage_Statstics" android:background="@color/myMaroonColor" android:layout_height="wrap_content"></Button>
        <Button android:textSize="15px" android:id="@+id/button10" android:gravity="center|bottom" android:textColor="@color/myWhiteColor" android:drawableTop="@drawable/biology" android:text="@string/HomePage_Biology" android:background="@color/myMaroonColor" android:layout_width="55dp" android:layout_height="wrap_content"></Button>
        <Button></Button>
                -
                -
                -
                -
         <Button></Button>
        <Button android:textSize="15px" android:id="@+id/button7" android:gravity="center|bottom" android:textColor="@color/myWhiteColor" android:drawableTop="@drawable/physics" android:text="@string/HomePage_Physics" android:background="@color/myMaroonColor" android:layout_width="50dp" android:layout_height="wrap_content"></Button>
        <Button android:textSize="15px" android:id="@+id/button6" android:gravity="center|bottom" android:textColor="@color/myWhiteColor" android:text="@string/HomePage_Computer" android:background="@color/myMaroonColor" android:layout_width="58dp" android:layout_height="46dp" android:drawableTop="@drawable/computer"></Button>                  
      </LinearLayout>
</HorizontalScrollView>

MySQLiteHelper.java

public List<ObjectiveWiseQuestion>getAllSubject()
 {
     List<ObjectiveWiseQuestion>LocwiseProfileList=new ArrayList<ObjectiveWiseQuestion>();
     String selectQuery= "SELECT  * FROM " + TABLE_SUBJECT;
     SQLiteDatabase db = this.getWritableDatabase();
        Cursor cursor = db.rawQuery(selectQuery, null);

        // looping through all rows and adding to list
        if (cursor.moveToFirst())
        {
            do {
                ObjectiveWiseQuestion owq= new ObjectiveWiseQuestion();
                owq.setSubjectName(cursor.getString(1));
                LocwiseProfileList.add(owq);
              }
            while(cursor.moveToNext());
            db.close();
        }
        return LocwiseProfileList;       
 }

Answer 1

你需要使用按钮的方法setText（）：

btn.setText("whatever_your_text");

<强>更新

在您的方案中，您可以动态地执行此操作：

    List<ObjectiveWiseQuestion> tmp = getAllSubject();
    int b = 1; //set the starting value as per your layout
    for (ObjectiveWiseQuestion i : tmp) {
        int btId = getApplicationContext().getResources()
                            .getIdentifier("button" + b, "id", getPackageName());

        Button btn = (Button) findViewById(btId);
        btn.setText(i.getSubjectName() + b);

        b++;
    }

如何通过编程方式将文本设置为scrollview中的按钮？

1 个答案: