Question

我想从我的RecyclerView Adapter onlick打开一个名为optionsFragment的新片段。我尝试了很多教程，但我对此非常愚蠢。

新片段应在左上角有一个后退箭头按钮，以返回RecyclerView。

请帮帮我。

这是我在适配器中持有者的onClick函数：

＆＃13;

FragmentManager benutzerlisteManager = ((NavigationDrawerActivity)customContext).getSupportFragmentManager();

               BenutzerOverviewFragment benutzerOverviewFragment = new BenutzerOverviewFragment();

               benutzerlisteManager.beginTransaction().replace(R.id.content_navigation_drawer,
                       benutzerOverviewFragment,
                       benutzerOverviewFragment.getTag())
                       .addToBackStack(null)
                       .commit();

＆＃13;

我已尝试过顶部的代码，但应用程序崩溃时出现此错误：

NavigationDrawerActivity @ b42040b必须实现OnFragmentInteractionListener

Answer 1

以下是从适配器加载新片段的方法：

  holder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
 OptionsFragment optionsFrag = new OptionsFragment ();
((ActivityName)context).getSupportFragmentManager().beginTransaction().replace(R.id.container, optionsFrag,"OptionsFragment").addToBackStack(null).commit();
    }
        });

对于背面按下图标，请按照以下步骤操作： Manage toolbar's navigation and back button from fragment in android

Answer 2

创建界面：
class MyActivity extends Activity implements MyItemClickListener{ }
将此界面实施到您的活动/片段：

MyAdapter adapter = new MyAdapter(this); //this is instance of MyItemClickListner

将接口的对象传递给适配器：

// OnClickListener for holder

从适配器调用接口的方法：

holder.itemView.setOnClickListener(new View.OnClickListener() {

@Override
public void onClick(final View v) {
mMyClickListner.onItemClick(getAdapterPosition());
}
});
mMyClickListner.onItemClick(getAdapterPosition());

这会在你的activity / fragment中调用onItemClick。从此方法声明中，您可以打开片段：

sFilterConfig.BankNumber = 0; sFilterConfig.FilterNumber = 0; sFilterConfig.FilterMode = CAN_FILTERMODE_IDMASK; sFilterConfig.FilterScale = CAN_FILTERSCALE_32BIT; sFilterConfig.FilterIdHigh = 0x10<<5; sFilterConfig.FilterIdLow = 0; sFilterConfig.FilterMaskIdHigh = 0xff<<5; sFilterConfig.FilterMaskIdLow = 0; sFilterConfig.FilterFIFOAssignment = 0; sFilterConfig.FilterActivation = ENABLE; HAL_CAN_ConfigFilter(&hcan, &sFilterConfig);

Answer 3

AppCompatActivity activity = (AppCompatActivity) view.getContext();

Fragment fragment = new DetailFragment();

activity.getSupportFragmentManager().beginTransaction().replace(R.id.fragmentContainer,fragment).addToBackStack(null).commit();

您可以编写onClick

Answer 4

我假设你有活动对象。您可以使用活动这样的对象

holder.itemView.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(final View v) {

            activity.getFragmentManager().beginTransaction().replace(R.id.container,new YourFragment()).addToBackStack(null).commit();


            }
        });

Answer 5

尝试

private Context mContext;
ArrayList<Inquiry> mInquiryYearsLists;
InquiryFragment mInquiryFragment;

public InquiryAdapter(Context context, ArrayList<Inquiry> arrayListingg) {
    this.mInquiryYearsLists = arrayListingg;
    this.mContext = context;
}

@Override
public void onBindViewHolder(@NonNull MyHolder holder, int position) {

            mInquiryFragment = new InquiryDashboardFragment();

            FragmentTransaction mFragmentTransaction = ((FragmentActivity)mContext).getSupportFragmentManager().beginTransaction();
            mFragmentTransaction.replace(R.id.fragment_container, mInquiryFragment). mFragmentTransaction.addToBackStack(null).commit();

        }
    });


}

如何从我的Adapter onClick打开一个片段

5 个答案: