小编kay*_*sin的帖子

我想使用数字选择器来获取用户的折扣百分比.一旦用户输入销售价格,我想要一个对话框来询问折扣百分比.我找不到在对话框中集成numberpicker的方法.

我正在编写一个活动,其顶部有一个linearLayout,后半部分有一个scrollView.scrollView在运行时可以获得多达30个relativeLayouts.这可能吗？我尝试使用以下代码,但它给出了一个错误:

public void onFocusChange(View v, boolean hasFocus) {
    // TODO Auto-generated method stub
    if(hasFocus==false){
    switch(v.getId()){

    case 6:

        main[no]=new RelativeLayout(this);
        mainParams=new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT );
        main[no].setLayoutParams(mainParams);
        mainLayout.addView(main[no]);
        svParams=new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
        sv.setLayoutParams(svParams);

        items[no]=new EditText(this);
        rates[no]=new EditText(this);
        quants[no]=new EditText(this);

        items[no].setHint("Enter item name");
        rates[no].setHint("Rate");
        quants[no].setHint("Quantity");

        RelativeLayout.LayoutParams etParams=new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
        RelativeLayout.LayoutParams rateParams=new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
        RelativeLayout.LayoutParams quantParams=new RelativeLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);

        items[no].setId(id++);
        quantParams.addRule(RelativeLayout.RIGHT_OF, (id-1));
        quants[no].setId(id++);
        pos=id;
        rateParams.addRule(RelativeLayout.RIGHT_OF, (id-1));
        rates[no].setId(id++);          

        etParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT);

        items[no].setLayoutParams(etParams);
        rates[no].setLayoutParams(rateParams);
        quants[no].setLayoutParams(quantParams);

        rates[no].setInputType(InputType.TYPE_CLASS_NUMBER | InputType.TYPE_NUMBER_FLAG_DECIMAL);
        quants[no].setInputType(InputType.TYPE_CLASS_NUMBER);
        main[no].addView(items[no]);
        main[no].addView(rates[no]);
        main[no].addView(quants[no]);
        quants[no].setOnFocusChangeListener(this);
        sv.addView(main[no]);
        no++;
        break;

每个相对布局包含3个彼此相邻的editTexts.