简介

startActivityForResult相信大家都很熟悉，Activity数据回传的常用方式，配合onActivityResult使用。但是startActivityForResult的调用场景千千万，onActivityResult的处理都集中在一处，所以这两块逻辑是分离的关系。
借鉴Glide添加空Fragment监听生命周期的方式，可以实现startActivityForResult和onActivityResult合并于一处处理。逻辑上会更清晰一些。

具体实现

关键代码其实就下面这个方法

private void addSupportFragment(){
        if (isActive()){
            FragmentManager fragmentManager = mActivityRef.get().getFragmentManager();
            android.app.Fragment fragment = fragmentManager.findFragmentByTag(mFragmentTag);
            if (fragment != null && fragment instanceof SupportFragment){
                mSupportFragment = (SupportFragment) fragment;
            }else {
                mSupportFragment = new SupportFragment();
                FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
                fragmentTransaction.add(mSupportFragment,mFragmentTag);
                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
                    fragmentTransaction.commitNow();
                }else {
                    fragmentTransaction.commitAllowingStateLoss();
                    fragmentManager.executePendingTransactions();
                }
            }
        }
    }

在SupportFragment的onActivityResult处理接口回调

@Override
    public void onActivityResult(final int requestCode, final int resultCode, final Intent data) {
        if (mBuilder != null && mBuilder.isActive()){
            if (mBuilder.getResultCallBack() != null){
                mMainHandler.postDelayed(new Runnable() {
                    @Override
                    public void run() {
                        if (mBuilder.getResultCallBack() == null){
                            return;
                        }
                        if (mBuilder.getResultThreadType() == ThreadType.THREAD_MAIN){
                            mBuilder.getResultCallBack().callBack(requestCode, resultCode, data);
                        }else {
                            ThreadPoolByFIFOQueue.getExecutor().execute(getCallBackRunnable(mBuilder.getResultCallBack(),requestCode, resultCode, data));
                        }
                    }
                },mBuilder.getResultCallBackDelay());
            }
        }
        super.onActivityResult(requestCode, resultCode, data);
    }

private Runnable getCallBackRunnable(final IEasyResultCallback callback, final int requestCode, final int resultCode, final Intent data){
        return new Runnable() {
            @Override
            public void run() {
                if (callback != null){
                    callback.callBack(requestCode, resultCode, data);
                }
            }
        };
    }

正常使用只需要callback.callBack(requestCode, resultCode, data);这个代码即可，之所以这么多行代码，完全是我闲的蛋疼加了一些可有可无的能力
比如：
延迟执行
延迟回调
回调的方法切换线程

就这吧，就是一种思路，没几行代码
源码