错误信息: java.lang.IllegalStateException: Can't change tag of fragment TransferFragment{6e857a4 (3f474cec-7622-4fbd-aeb3-b975f87bbc15) id=0x7f0800ea android:switcher:2131230954:0}: was android:switcher:2131230954:0 now android:switcher:2131230954:1
出错代码:
viewPager = findViewById(R.id.viewpager);
TransferFragment transferFragment = new TransferFragment();
final List<Fragment> fragments = new ArrayList<>();
fragments.add(transferFragment);
fragments.add(transferFragment);
fragments.add(transferFragment);
原因分析:list add的是同一个fragment对象,所以导致pageadapter抛出无法识别切换fragment
解决:实例化多个对象即可
viewPager = findViewById(R.id.viewpager);
TransferFragment transferFragment = new TransferFragment();
TransferFragment transferFragment1 = new TransferFragment();
TransferFragment transferFragment2 = new TransferFragment();
final List<Fragment> fragments = new ArrayList<>();
fragments.add(transferFragment);
fragments.add(transferFragment1);
fragments.add(transferFragment2);