提问者:小点点

android动态获取复选框值


你好,我是一个学生,我的项目是制作一个应用程序的android工作室。

我只是个初学者,所以每件事都很难:(

这是我的问题。

我动态创建的复选框取决于当前。

如果用户单击btnEx按钮,我想获得finalMemberTag。

但是在这段代码中,当我单击btnEx时,finalMemberTag为空。

如果用户单击复选框,我希望将复选框的文本添加到FinalMemberTag中。并且复选框未选中,则将复选框的文本移至FinalMemberTag。

我怎么能做这些?(我已经把可抽屉的东西摆好了。)

请帮帮我...

 private String[] finalMemberTag;

  Button btnEx;

  btnEx.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            sendData();
        }
    });


Switch(current){

  case "A":
                    String[] memberA = {"all", "ab", "cd", "ef", "g", "hu", "hi", "dd"};
                    
                    for (int i = 0; i < 8; i++) {
                        CheckBox chA = new CheckBox(getApplicationContext());
                        chA.setText(membersA[i]);
                        chA.setTypeface(ResourcesCompat.getFont(getApplicationContext(), R.font.nanumsquareround_r));
                        chA.setTextColor(Color.parseColor("#8D8D8D"));
                        cHA.setButtonDrawable(android.R.color.transparent);
                        chA.setBackground(inactiveCb);
                        int index = i;
                        chA.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
                            @Override
                            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                                if (isChecked) {
                                    activeCb.setColorFilter(new PorterDuffColorFilter(starColor, PorterDuff.Mode.SRC_IN));
                                    chA.setBackground(activeCb);
                                    chA.setTextColor(startextColor);
                                    finalMemberTag[index] = buttonView.getText().toString();
                                    
                                }

                                if(!isChecked) {
                                    chA.setBackground(inactiveCb);
                                    chA.setTextColor(Color.parseColor("#8D8D8D")); }
                                    
                            }
                        });


                        chA.setPadding(36, 24, 36, 24);
                        chA.setLayoutParams(params);
                        placeInputMember.addView(chA);
                    }
                    break;

        case "B":
                    String[] memberB = {"all", "abc", "Dcd", "e3f", "DSg", "DGu", "hE", "dV"};
                    
                    for (int i = 0; i < 8; i++) {
                        CheckBox chB = new CheckBox(getApplicationContext());
                        chB.setText(memberB[i]);
                        chB.setTypeface(ResourcesCompat.getFont(getApplicationContext(), R.font.nanumsquareround_r));
                        chB.setTextColor(Color.parseColor("#8D8D8D"));
                        chB.setButtonDrawable(android.R.color.transparent);
                        chB.setBackground(inactiveCb);
                        int index = i;
                        chB.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
                            @Override
                            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                                if (isChecked) {
                                    activeCb.setColorFilter(new PorterDuffColorFilter(starColor, PorterDuff.Mode.SRC_IN));
                                    chB.setBackground(activeCb);
                                    chB.setTextColor(startextColor);
                                    finalMemberTag[index] = buttonView.getText().toString();
                                   
                                }

                                if(!isChecked) {
                                    chB.setBackground(inactiveCb);
                                    chB.setTextColor(Color.parseColor("#8D8D8D")); }
                                    
                            }
                        });


                        chB.setPadding(36, 24, 36, 24);
                        chB.setLayoutParams(params);
                        placeInputMember.addView(chB);
                    }
                    break;

  }    

    public void sendData(){
 Log.d("##", String.valueOf(finalMemberTag));

   }

共1个答案

匿名用户

好的,您的代码有一些问题:

首先,finalMemberTag始终为空,因为您从未初始化它。如果您希望使用字符串数组,并且希望将文本存储在复选框上,那么我们应该假设您最多将选中所有复选框(16)。这意味着您希望将数组初始化为:

专用字符串[]finalMemberTag=新字符串[16]

其次,我认为最好使用string集来避免重复,或者,如果需要特定索引的信息,使用ArrayList。

与设置:

 private Set<String> finalMembersTag  =  new HashSet<>(16);
 //onCreate...other stuff...for loop
 //...setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
     @Override
     public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
         final String buttonText = buttonView.getText().toString();
         if (isChecked) {
             // other stuff ...
             finalMembersTag.add(buttonText);
         } else {
             // other stuff ...
             finalMembersTag.remove(buttonText);
         }
     }

使用ArrayList:

 private List<String> finalMembersTag  =  new ArrayList<>(16);
 //onCreate...other stuff...for loop
  int index = i;
  chA.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
     @Override
     public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
         final String buttonText = buttonView.getText().toString();
         if (isChecked) {
             // other stuff ...
             finalMembersTag.add(index, buttonText); //this will add the text to the required index
         } else {
             // other stuff ...
             finalMembersTag.remove(index); //this will remove the element  at said index, or if you want an empty you can do finalMembersTag.add(index, "");
         }
     }