Question

我的活动xml中有700个复选框。我需要获取所有选中复选框的文本。

一种方法是查看是否checkbox1 isChecked()并获取文本，但是对700个复选框执行此操作过于重复。

Answer 1

我认为最好的方法可能是，从一个空的String数组开始（表示选中的复选框为零）。每次选择一个复选框时，都将其文本添加到数组中，每次取消选中该复选框时，则从数组中删除该字符串（如果存在）。最后，您只需要循环数组即可获取选定的字符串

编辑：

class MainActivity : AppCompatActivity(), CompoundButton.OnCheckedChangeListener {

private lateinit var checkbox1: CheckBox
private lateinit var checkbox2: CheckBox
private lateinit var checkboxContainer: ConstraintLayout
private var checkedStrings = ArrayList<String>()

override fun onCreate(savedInstanceState: Bundle?) {

    super.onCreate(savedInstanceState)
    setContentView(R.layout.activity_main)

    checkbox1 = findViewById(R.id.checkbox1)
    checkbox2 = findViewById(R.id.checkbox2)
    checkboxContainer = findViewById(R.id.checkboxContainer)

    checkbox1.setOnCheckedChangeListener(this)
    checkbox2.setOnCheckedChangeListener(this)

    //or, if you have the checkboxes statically added to your layout, which I suspect you do, you can loop through the view like:
    for (i in 0..checkboxContainer.childCount){
        if (checkboxContainer.getChildAt(i) is CheckBox){
            (checkboxContainer.getChildAt(i) as CheckBox).setOnCheckedChangeListener(this)
        }
    }
}

override fun onCheckedChanged(buttonView: CompoundButton?, isChecked: Boolean) {

    val checkBoxString = (buttonView as CheckBox).text.toString()

    if (isChecked){
        checkedStrings.add(checkBoxString)
    }else{
        checkedStrings.remove(checkBoxString)
    }
}

fun processStrings(){

    // at the end of the iteration/screen/whatever you can check the content of the checkedStrings array like, for instance:

    for (string in checkedStrings){
        Log.e("print string", string)
    }
}
}

获取选中的几个复选框文本的android？

1 个答案: