Question

我有两个片段活动。现在我想在此之间切换。我也希望在第一个片段活动结束后执行此操作。

以下是我的片段活动类

MainActivity.java

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {

    View view = inflater.inflate(R.layout.fragment_buyer_home_page, container, false);

    return view;
}

SecondActivity.java

import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.view.ViewPager;
import android.os.Bundle;
import android.view.MotionEvent;
import android.view.View;

public class MainActivity extends FragmentActivity {

    private ViewPager pager;

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

        final int page=2;

        pager = (ViewPager) findViewById(R.id.viewPager);

        pager.setAdapter(new MyPagerAdapter(getSupportFragmentManager()));
        pager.setOnTouchListener(new View.OnTouchListener() {
            @Override
            public boolean onTouch(View v, MotionEvent event) {
                if (pager.getCurrentItem()==page) {
                    return  true;
                }
                return false;
            }
        });

    }

    private class MyPagerAdapter extends FragmentPagerAdapter {

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

        @Override
        public Fragment getItem(int pos) {
            switch(pos) {

                case 0: return FirstFragment.newInstance("FirstFragment");
                case 1: return SecondFragment.newInstance("SecondFragment");
                case 2: return ThirdFragment.newInstance("ThirdFragment");
                case 3: return FourthFragment.newInstance("FourthFragment");
                case 4: return FifthFragment.newInstance("FifthFragment");
                default: return ThirdFragment.newInstance("DefaultFragment");
            }
        }

        @Override
        public int getCount() {
            return 5;
        }



    }

    public void setCurrentItem(int which) {
        if(pager != null && which >= 0 && which <= 4) {
            pager.setCurrentItem(which);
        }
    }
}

问题我该怎么做？

Answer 1

尝试覆盖FirstActivity的第五个片段（fifthFragment.java）中的OnDetach（）方法，并在ondetach（）方法内调用getActivity（）。startActivity（secondActivity）;

如何在android中相互转换两个片段之间的活动

1 个答案: