RadioGroup+RadioButton切换Fragment

最新推荐文章于 2025-05-23 16:49:04 发布

原创最新推荐文章于 2025-05-23 16:49:04 发布 · 843 阅读

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#radio button #Fragment切换

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本文介绍了一种实现安卓应用中RadioGroup切换事件的方法，并展示了如何通过切换事件来显示和隐藏不同的Fragment，确保每次切换时只显示一个Fragment并隐藏其他Fragment。

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1.设置默认选中项
mainChart.setChecked(true);
setChoiceItem(0);
2.`RadioGroup切换事件

private void setRbChecked() {
        radioGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
            @Override
            public void onCheckedChanged(RadioGroup radioGroup, @IdRes int i) {
                switch (i) {
                    case R.id.main_chart:
                        setChoiceItem(0);
                        break;
                    case R.id.last_week_sort:
                        setChoiceItem(1);
                        break;
                    case R.id.this_week_sort:
                        setChoiceItem(2);
                        break;
                    case R.id.month_sort:
                        setChoiceItem(3);
                        break;
                    case R.id.completion_mission:
                        setChoiceItem(4);
                        break;
                }
            }
        });
    }`
    ```
**3.显示和隐藏Fragmen**t

public void setChoiceItem(int index) {
transaction = fManager.beginTransaction();
//隐藏所有Fragment
hideFragments(transaction);
switch (index) {
case 0:
transaction.show(mainChartFragment);
break;
case 1:
transaction.show(lastWeekSortFragment);
break;
case 2:
transaction.show(lastWeekSortFragment);
break;
case 3:
transaction.show(lastWeekSortFragment);
break;
case 4:
transaction.show(missionComplishFragment);
break;
}
transaction.commit();
}

```
    //隐藏所有的Fragment,避免fragment混乱
    private void hideFragments(FragmentTransaction transaction) {
        if (mainChartFragment == null) {
            mainChartFragment = new MainChartFragment();
            transaction.add(R.id.sort_frg_content, mainChartFragment);
        }
        if (lastWeekSortFragment == null) {
            lastWeekSortFragment = new LastWeekSortFragment();
            transaction.add(R.id.sort_frg_content, lastWeekSortFragment);
        }
        if (missionComplishFragment == null) {
            missionComplishFragment = new MissionComplishFragment();
            transaction.add(R.id.sort_frg_content, missionComplishFragment);
        }

        transaction.hide(mainChartFragment);
        transaction.hide(lastWeekSortFragment);
        transaction.hide(missionComplishFragment);
    }