英文:
How to make radio buttons display a text in another activity when clicked in android studio?
问题
我有6个选项供用户选择，并有一个按钮，当用户点击时，会进入下一页。我有两个类似的页面。在每个页面中选择一个选项后，我想根据先前单击的单选按钮，在另一个活动中显示特定文本。我如何在Android Studio中使用Java来实现这个功能？
英文:
I have 6 options that the user can select from and a button that takes them to the next page when clicked. I have two pages like this. After one choice from each page is selected, I would like to display certain text depending on the radio buttons clicked previously, in another activity. How can I do this in java in android studio?
答案1
得分: 0
如果您正在控制FragmentManager，可以将选项作为参数传递给下一个Fragment的构造函数；否则，您可以将所有内容保存在静态变量中（只要不包含视图，所以不要将单选按钮存储在那里），然后从外部访问该变量。
像这样：
public class MyFragment {
public static boolean isRadioButtonXPressed = false; // 默认情况下更改为true（如果已按下）
public void onCreate(...) {
radioButtonX.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
isRadioButtonXPressed = b;
}
});
}
}
// 来自另一个Fragment
public class MyFragment2 {
public void onCreateView(...) {
if (MyFragment.isRadioButtonXPressed) {
// 已按下
} else {
// 未按下
}
}
}
有许多不同的方法。
英文:
If you are controlling the FragmentManager you can just pass the options as an argument to the next Fragment's constructor otherwise, you can save everything in a static variable (as long as no Views are in there, so don't store the radio buttons there) and access that variable from outside.
Like this:
public class MyFragment {
public static boolean isRadioButtonXPressed = false; //change to true if it's pressed by default
public void onCreate(...) {
radioButtonX.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton compoundButton, boolean b) {
isRadioButtonXPressed = checked;
}
});
}
}
//from the other fragment
public class MyFragment2 {
public void onCreateView(...) {
if (MyFragment.isRadioButtonXPressed) {
//it's been pressed
} else {
//it's not been pressed
}
}
}
There are many different ways.
答案2
得分: 0
你可以使用Intent来传递数据，因为你正在使用activity。以下是一个示例：
Intent page = new Intent(FirstActivity.this, SecondActivity.class);
page.putExtra("key", "这是我的文本");
startActivity(page);
在Second Activity的onCreate()方法中获取值：
String value = getIntent().getStringExtra("key");
英文:
As you are using activity, you can use Intent to pass data. Here is a sample:
Intent page = new Intent(FirstActivity.this, SecondActivity.class);
page.putExtra("key", "This is my text");
startActivity(page);
For getting the value on Second Activity onCreate() method:
String value = getIntent().getStringExtra("key");
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