两个Fragment之间的跳转（例给Fragment加动画跳转）

最新推荐文章于 2020-04-07 20:35:15 发布

原创最新推荐文章于 2020-04-07 20:35:15 发布 · 940 阅读

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#动画

本文介绍如何在一个Fragment中实现针对不同Fragment的开场动画效果。通过在onCreate方法中初始化FragmentManager及FragmentTransaction，结合newInstance方法传递参数，并在onActivityCreated中设置动画监听，实现Fragment之间的平滑过渡。

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1、首先在第一个Fragment 里面拿到FragmentManger 和FragmentTransaction

@Override  
public void onCreate(Bundle savedInstanceState) {  
super.onCreate(savedInstanceState);  
fm = getFragmentManager();  
fragments[0]=new MovieFragment();
fragments[1]=new RobotFragment();
fragments[2]=new WuZiQiFragment();
fragments[3]=new SettingsFragment();
}

2 创建Fragment时传递要的数据。

    private static final String BUNDLE_SPLASH = "splash";
    private static final String BUNDLE_FRAGMENT = "fragment";
    private AnimationSet set;
    private LinearLayout layout;//要添加动画的根布局
    private FragmentManager fm;
    private Fragment[] fragments=new Fragment[4];
    private int fragment_id;//传入要选择的哪个Fragment


public SplashFragment newInstance(int layout,int whichfragment) {
        SplashFragment fragment = new SplashFragment();
        Bundle bundle = new Bundle();
        bundle.putInt(BUNDLE_SPLASH, layout);
        bundle.putInt(BUNDLE_FRAGMENT, whichfragment);
        fragment.setArguments(bundle);
        return fragment;
    }

3.onActivityCreated方法中添加动画

@Override
    public void onActivityCreated(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onActivityCreated(savedInstanceState);
        init();
        set=(AnimationSet) AnimationUtils.loadAnimation(getActivity(),R.anim.splash_fragment);
        layout.setAnimation(set);
        set.setAnimationListener(this);//动画结束监听
    }

@Override
    public void onAnimationEnd(Animation animation) {
        // TODO Auto-generated method stub

        fm.beginTransaction().replace(R.id.main_fragment, fragments[fragment_id]).commit();
    }