Question

我有一个非常基本的问题。我试图读取三个EditText字段的值，并使用arrayadapter将它们保存为arraylist中的一个项目。我的问题是如何将我从EditTexts中读取的三个变量分组并将它们作为单个项添加到arraylist中？

Answer 1

class editTextString{
private String  str1
private String  str2
private String  str3

public editTextString(String data1,String data2,String data3){

str1 = data1;
str2 = data2;
str3 = data3;
}

}

现在将此类添加到ArrayList ..

就像下面一样，

ArrayList<editTextString> list = new ArrayList<editTextString>();

editTextString data = new editTextString("edit1","edit2","edit3")

list.add(data)

Answer 2

您可以创建一个自定义对象来保存3个edittexts中的字符串

数组列表可以是

public class CustomObj{
    String str1;
    String str2;
    String str3;

    public CustomObj(String s1,String s2,String s3){
        this.str1 = s1;
        this.str2 = s2;
        this.str3 = s3;
    }
}


ArrayList<CustomObj> customObjList = new ArrayList<CustomObj>();

Answer 3

public class MyObject {
    private String string1;
    private String string2;
    private String string3;

    public MyObject(String s1,String s2,String s3) {
        string1 = s1;
        string2 = s2;
        string3 = s3;
    }

    public toString() {
        return string1 + " " + string 2 + " " +string3;// your string representation
    }
}


MyObject[] adapterList = new MyObect[1];

Answer 4

adapter.add(edtxt1.getText()+edtxt2.getText()+edtxt3.getText())

这将存储在适配器

中

arraylist与自定义对象

4 个答案: