Android fragments 对不同片段中的放射组进行检查更改后，将使用ViewPager创建片段

我有6个片段，每个片段带有一个包含4个单选按钮的RadioGroup，它们都使用viewpager显示在同一活动中，因此用户可以在其中滑动

我一直在尝试在每个放射组上实现一个onCheckedChangedListener，这样我就可以知道在每个片段中选中了哪个单选按钮

在过去的几天里，我尝试了很多事情，我的工作解决方案非常冗长，肯定有更好的方法

这是我的活动，它调用包含当前解决方案的片段

public class QuestionsActivity extends AppCompatActivity {

Toolbar toolbar;
ViewPager mViewPager;


@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_questions);

//        tool bar
    toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    mViewPager = (ViewPager) findViewById(R.id.pager);
    /** set the adapter for ViewPager */
    mViewPager.setAdapter(new MyPagerAdapter(
            getSupportFragmentManager()));
}


/**
 * Defining a FragmentPagerAdapter class for controlling the fragments to be shown when user swipes on the screen.
 */
public class MyPagerAdapter extends FragmentPagerAdapter {

    public MyPagerAdapter(FragmentManager fm) {
        super(fm);
    }

    @Override
    public Fragment getItem(int position) {
        /** Show a Fragment based on the position of the current screen */
        if (position == 0) {
            return new Q1Fragment();
        } else if (position == 1) {
            return new Q2Fragment();
        } else if (position == 2) {
            return new Q3Fragment();
        } else if (position == 3) {
            return new Q4Fragment();
        } else if (position == 4) {
            return new Q5Fragment();
        } else
            return new Q6Fragment();
    }

    @Override
    public int getCount() {
        // Show 2 total pages.
        return 6;
    }

}



public void onRadio1Clicked(View view) {
    boolean checked = ((RadioButton) view).isChecked();
    switch (view.getId()) {
        case R.id.radioButton1:
            if (checked) {
                Context context = getApplicationContext();
                int duration = Toast.LENGTH_SHORT;
                CharSequence text = "radio1";
                Toast toast = Toast.makeText(context, text, duration);
                toast.show();
            }
            break;
        case R.id.radioButton2:
            if (checked) {
                Context context = getApplicationContext();
                int duration = Toast.LENGTH_SHORT;
                CharSequence text = "radio2";
                Toast toast = Toast.makeText(context, text, duration);
                toast.show();
            }
            break;
        case R.id.radioButton3:
            if (checked) {
                Context context = getApplicationContext();
                int duration = Toast.LENGTH_SHORT;
                CharSequence text = "radio3";
                Toast toast = Toast.makeText(context, text, duration);
                toast.show();
            }
            break;
        case R.id.radioButton4:
            if (checked) {
                Context context = getApplicationContext();
                int duration = Toast.LENGTH_SHORT;
                CharSequence text = "radio4";
                Toast toast = Toast.makeText(context, text, duration);
                toast.show();
            }
            break;
    }
}

public void onRadio2Clicked(View view) {
    boolean checked = ((RadioButton) view).isChecked();
    switch (view.getId()) {
        case R.id.radioButton1:
            if (checked) {
                Context context = getApplicationContext();
                int duration = Toast.LENGTH_SHORT;
                CharSequence text = "radio1";
                Toast toast = Toast.makeText(context, text, duration);
                toast.show();
            }
            break;
        case R.id.radioButton2:
            if (checked) {
                Context context = getApplicationContext();
                int duration = Toast.LENGTH_SHORT;
                CharSequence text = "radio2";
                Toast toast = Toast.makeText(context, text, duration);
                toast.show();
            }
            break;
        case R.id.radioButton3:
            if (checked) {
                Context context = getApplicationContext();
                int duration = Toast.LENGTH_SHORT;
                CharSequence text = "radio3";
                Toast toast = Toast.makeText(context, text, duration);
                toast.show();
            }
            break;
        case R.id.radioButton4:
            if (checked) {
                Context context = getApplicationContext();
                int duration = Toast.LENGTH_SHORT;
                CharSequence text = "radio4";
                Toast toast = Toast.makeText(context, text, duration);
                toast.show();
            }
            break;
    }
}
}

对于每个广播组，我使用xml中的android:onClick函数，并为每个组创建一个新方法。上面只是其中的两个

这是一个碎片的样子

<RadioGroup
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/radioGroup1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="center"
>

<RadioButton
    android:id="@+id/radioButton1"
    android:layout_width="310dp"
    android:layout_height="wrap_content"
    android:layout_gravity="center_horizontal"
    android:background="@drawable/border"
    android:layout_marginTop="18dp"
    android:padding="10dp"
    android:text="@string/radio"
    android:onClick="onRadio1Clicked"
    />

<RadioButton
    android:id="@+id/radioButton2"
    android:layout_width="310dp"
    android:layout_height="wrap_content"
    android:layout_gravity="center_horizontal"
    android:background="@drawable/border"
    android:layout_marginTop="18dp"
    android:padding="10dp"
    android:text="@string/radio1"
    android:onClick="onRadio1Clicked"/>

<RadioButton
    android:id="@+id/radioButton3"
    android:layout_width="310dp"
    android:layout_height="wrap_content"
    android:layout_gravity="center_horizontal"
    android:background="@drawable/border"
    android:layout_marginTop="18dp"
    android:padding="10dp"
    android:text="@string/radio2"
    android:onClick="onRadio1Clicked"/>

<RadioButton
    android:id="@+id/radioButton4"
    android:layout_width="310dp"
    android:layout_height="wrap_content"
    android:layout_gravity="center_horizontal"
    android:background="@drawable/border"
    android:layout_marginTop="18dp"
    android:padding="10dp"
    android:text="@string/radio3"
    android:onClick="onRadio1Clicked"/>

<Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_gravity="center_horizontal"
    android:text="@string/submit"
    android:layout_marginTop="13dp"
    />

</RadioGroup>

无论我做什么，我都不能让听者处理第一个片段以外的片段

---

有什么想法吗？

只需从布局中删除所有android:onClick=“onRadio1Clicked”，并从活动中设置OnCheckedChangeListener代码，然后在片段中实现它，如Q1Fragment override onViewCreated方法，并在其他片段中编写代码，依此类推

在Q1中：

@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        RadioGroup rg1 = (RadioGroup)     view.findViewById(R.id.radioGroup1);
        rg1.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener()
{

    @Override
    public void onCheckedChanged (RadioGroup group,int checkedId){
    Context context = getContext();
    RadioButton thisButton = (RadioButton) getView().findViewById(checkedId);
    Toast toast = Toast.makeText(context, thisButton.getText(), Toast.LENGTH_SHORT);
    toast.show();
}
}

);
    }

在Q2片段中：-

@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        RadioGroup rg2 = (RadioGroup)     view.findViewById(R.id.radioButton2);
        rg2.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener()
{

    @Override
    public void onCheckedChanged (RadioGroup group,int checkedId){
    Context context = getContext();
    RadioButton thisButton = (RadioButton) getView().findViewById(checkedId);
    Toast toast = Toast.makeText(context, thisButton.getText(), Toast.LENGTH_SHORT);
    toast.show();
}
}

);
    }

---

非常感谢。我没有在ViewCreated（）上尝试，只是在ActivityCreated（）上尝试。我会给你一些建议，但我只是个普通人，还不能这么做。

@Override
public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        RadioGroup rg2 = (RadioGroup)     view.findViewById(R.id.radioButton2);
        rg2.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener()
{

    @Override
    public void onCheckedChanged (RadioGroup group,int checkedId){
    Context context = getContext();
    RadioButton thisButton = (RadioButton) getView().findViewById(checkedId);
    Toast toast = Toast.makeText(context, thisButton.getText(), Toast.LENGTH_SHORT);
    toast.show();
}
}

);
    }