英文:
Store Radiobutton int value (Android Studio)
问题
> SCENARIO
在一个单选按钮组内有三个单选按钮，第一个单选按钮的名称是"A"，第二个单选按钮的名称是"B"，第三个单选按钮的名称是"C"。
> QUESTION
-
如何获取整数值？如果我选择第一个单选按钮，应该获得整数值2；类似地，如果我选择第二个和第三个单选按钮，应该获得整数值5和6。
-
一旦我选择了任何一个单选按钮，它会自动将整数值保存在共享偏好设置中（例如，我选择了第一个单选按钮，值为"2"会被存储）。
-
在我做出选择之后，我决定关闭应用程序，再次打开应用时，发现第一个单选按钮仍然被选中。
英文:
> SCENARIO
There 3 radiobuttons inside a radiogroup, first radiobutton name is "A", second radiobutton name is "B" and third radiobutton is "C".
> QUESTION
-
How to get the int value that is if i select first radiobutton then it should get the int value of 2 and similarly if i select second and third radiobuttons then it should get the int value of 5 and 6.
-
Once i select any of the radiobutton then it automatically saves the int value in shared preference (For example i choose first radiobutton that value "2" get stored).
-
After i choose then i decided to close the app and open once again and see that first radiobutton is still selected.
答案1
得分: 1
你可以获取RadioGroup的CheckedId，然后将其与每个RadioButton的Id进行比较，然后根据值的位置进行设置。
示例：
int value;
radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId){
if (checkedId == R.id.buttonA) {
value = 2;
} else if (checkedId == R.id.buttonB) {
value = 5;
} else {
value = 6;
}
}
});
将该值保存在您的首选项中，当您返回应用程序时，只需检查位置并执行radioGroup.check()。
英文:
You can get the CheckedId of your RadioGroup and compare it with the Id from each RadioButton then set by the position of the values.
Example:
int value;
radioGroup.setOnCheckChangeListener(new RadioGroup.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(RadioGroup group, int checkedId){
if (checkedId == R.id.buttonA) {
value = 2;
} else if (checkedId == R.id.buttonB) {
value = 5;
} else {
value = 6;
}
}
Save that value on your preferences and when you get back to the app just check the position and do a radioGroup.check();
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