viewpager+layout布局文件随数据多少创建滑动页面
近期在做一个答题类型的APP,而其中最重要的是答题卡。而答题卡要如何做?
1.将数据插入到SQLite数据库中
2.建立entity实体包,创建实体类,封装。
3.创建实体与view的List集合
4.循环读取数据,加入到实体集合中
5.根据实体集合(size)进行循环,将布局文件转化为view,加入到view的List集合
以上5点可以达成与数据多少来创建viewpager的滑动也效果
如有不明白者,请联系本人。
    private ViewPager vp_viewPager;
    private List<View> views;
    private List<Topic> topic;
    private SQLiteDatabase database;
    private Cursor cursor;
 @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_common);
 topic = new ArrayList<>();
        views = new ArrayList<>();
        vp_viewPager = (ViewPager) findViewById(R.id.vp_ViewPager);
        DBHelper dbHelper = new DBHelper(this, "Topic", null, 1);
        database = dbHelper.getReadableDatabase();
        cursor = database.query(false, "tb_topic", null, null, null, null, null, null, null);
        while (cursor.moveToNext()) {
            Topic t = new Topic();
            t.set_id(cursor.getString(cursor.getColumnIndex("_id")));
            t.setTitle(cursor.getString(cursor.getColumnIndex("title")));
            t.setAnswerA(cursor.getString(cursor.getColumnIndex("answerA")));
            t.setAnswerB(cursor.getString(cursor.getColumnIndex("answerB")));
            t.setAnswerC(cursor.getString(cursor.getColumnIndex("answerC")));
            t.setCorrect(cursor.getString(cursor.getColumnIndex("correct")));
            t.setAnalysis(cursor.getString(cursor.getColumnIndex("analysis")));
            t.setName(cursor.getString(cursor.getColumnIndex("name")));
            topic.add(t);
        }
        for (int i = 0; i < topic.size(); i++) {
            views.add(getLayoutInflater().inflate(R.layout.common_01, null));
            //编号
            TextView topic_id = views.get(i).findViewById(R.id.topic_id);
            //题目
            TextView topic_title = views.get(i).findViewById(R.id.topic_title);
            //选项
            RadioButton topic_radioButton_a = views.get(i).findViewById(R.id.topic_RadioButton_A);
            RadioButton topic_RadioButton_B = views.get(i).findViewById(R.id.topic_RadioButton_B);
            RadioButton topic_RadioButton_C = views.get(i).findViewById(R.id.topic_RadioButton_C);
            //
            topic_id.setText(topic.get(i).get_id());
            topic_title.setText(topic.get(i).getTitle());
            topic_radioButton_a.setText(topic.get(i).getAnswerA());
            topic_RadioButton_B.setText(topic.get(i).getAnswerB());
            topic_RadioButton_C.setText(topic.get(i).getAnswerC());
        }
        vp_viewPager.setAdapter(new MyAdapter());
}
2017-08-1113:59:02
 
                    
                

 
 
                
            
         浙公网安备 33010602011771号
浙公网安备 33010602011771号