android.support.v4.app.FragmentManager#FragmentLifecycleCallbacks ( )源码实例Demo

@Override
public void injectFragmentLifecycle(Context context, List<FragmentManager.FragmentLifecycleCallbacks> lifecycles) {
    //当所有模块集成到宿主 App 时, 在 App 中已经执行了以下代码, 所以不需要再执行
    if (BuildConfig.IS_BUILD_MODULE) {
        lifecycles.add(new FragmentManager.FragmentLifecycleCallbacks() {
            @Override
            public void onFragmentDestroyed(FragmentManager fm, android.support.v4.app.Fragment f) {
                ((RefWatcher) ArmsUtils
                        .obtainAppComponentFromContext(f.getActivity())
                        .extras()
                        .get(RefWatcher.class.getName()))
                        .watch(f);
            }
        });
    }
}
 

@Override
public void injectFragmentLifecycle(Context context, List<FragmentManager.FragmentLifecycleCallbacks> lifecycles) {
    //当所有模块集成到宿主 App 时, 在 App 中已经执行了以下代码, 所以不需要再执行
    if (BuildConfig.IS_BUILD_MODULE) {
        lifecycles.add(new FragmentManager.FragmentLifecycleCallbacks() {
            @Override
            public void onFragmentDestroyed(FragmentManager fm, android.support.v4.app.Fragment f) {
                ((RefWatcher) ArmsUtils
                        .obtainAppComponentFromContext(f.getActivity())
                        .extras()
                        .get(RefWatcher.class.getName()))
                        .watch(f);
            }
        });
    }
}
 

@Override
public void injectFragmentLifecycle(Context context, List<FragmentManager.FragmentLifecycleCallbacks> lifecycles) {
    //当所有模块集成到宿主 App 时, 在 App 中已经执行了以下代码, 所以不需要再执行
    if (BuildConfig.IS_BUILD_MODULE) {
        lifecycles.add(new FragmentManager.FragmentLifecycleCallbacks() {
            @Override
            public void onFragmentDestroyed(FragmentManager fm, android.support.v4.app.Fragment f) {
                ((RefWatcher) ArmsUtils
                        .obtainAppComponentFromContext(f.getActivity())
                        .extras()
                        .get(RefWatcher.class.getName()))
                        .watch(f);
            }
        });
    }
}
 

/**
 * 给每个 Activity 的所有 Fragment 设置监听其生命周期, Activity 可以通过 {@link IActivity#useFragment()}
 * 设置是否使用监听,如果这个 Activity 返回 false 的话,这个 Activity 下面的所有 Fragment 将不能使用 {@link FragmentDelegate}
 * 意味着 {@link BaseFragment} 也不能使用
 *
 * @param activity
 */
private void registerFragmentCallbacks(Activity activity) {
    boolean useFragment = activity instanceof IActivity ? ((IActivity) activity).useFragment() : true;
    if (activity instanceof FragmentActivity && useFragment) {

        if (mFragmentLifecycle == null) {
            mFragmentLifecycle = new FragmentLifecycle();
        }

        ((FragmentActivity) activity).getSupportFragmentManager().registerFragmentLifecycleCallbacks(mFragmentLifecycle, true);

        if (mFragmentLifecycles == null && mExtras.containsKey(ConfigModule.class.getName())) {
            mFragmentLifecycles = new ArrayList<>();
            List<ConfigModule> modules = (List<ConfigModule>) mExtras.get(ConfigModule.class.getName());
            for (ConfigModule module : modules) {
                module.injectFragmentLifecycle(mApplication, mFragmentLifecycles);
            }
            mExtras.remove(ConfigModule.class.getName());
        }

        for (FragmentManager.FragmentLifecycleCallbacks fragmentLifecycle : mFragmentLifecycles) {
            ((FragmentActivity) activity).getSupportFragmentManager().registerFragmentLifecycleCallbacks(fragmentLifecycle, true);
        }
    }
}
 

/**
 * 给每个 Activity 的所有 Fragment 设置监听其生命周期, Activity 可以通过 {@link IActivity#useFragment()}
 * 设置是否使用监听,如果这个 Activity 返回 false 的话,这个 Activity 下面的所有 Fragment 将不能使用 {@link FragmentDelegate}
 *
 * @param activity: Activity
 */
private void registerFragmentCallbacks(Activity activity) {
    boolean useFragment = !(activity instanceof IActivity) || ((IActivity) activity).useFragment();
    if (activity instanceof FragmentActivity && useFragment) {

        if (mFragmentLifecycle == null) {
            mFragmentLifecycle = new FragmentLifecycle();
        }

        ((FragmentActivity) activity).getSupportFragmentManager().registerFragmentLifecycleCallbacks(mFragmentLifecycle, true);

        if (mFragmentLifecycles == null && mExtras.containsKey(ConfigLifecycle.class.getName())) {
            mFragmentLifecycles = new ArrayList<>();
            List<ConfigLifecycle> lifecycles = (List<ConfigLifecycle>) mExtras.get(ConfigLifecycle.class.getName());
            for (ConfigLifecycle lifecycle : lifecycles) {
                lifecycle.injectFragmentLifecycle(mApplication, mFragmentLifecycles);
            }
            mExtras.remove(ConfigLifecycle.class.getName());
        }

        for (FragmentManager.FragmentLifecycleCallbacks fragmentLifecycle : mFragmentLifecycles) {
            ((FragmentActivity) activity).getSupportFragmentManager()
                    .registerFragmentLifecycleCallbacks(fragmentLifecycle, true);
        }
    }
}
 

@Override
public void injectFragmentLifecycle(Context context, List<FragmentManager.FragmentLifecycleCallbacks> lifecycles) {
    lifecycles.add(new FragmentManager.FragmentLifecycleCallbacks() {
        @Override
        public void onFragmentDestroyed(FragmentManager fm, Fragment f) {
            ((RefWatcher) ArmsUtils
                    .obtainAppComponentFromContext(f.getActivity())
                    .extras()
                    .get(RefWatcher.class.getName()))
                    .watch(f);
        }
    });
}
 

@Override
public void injectFragmentLifecycle(Context context, List<FragmentManager.FragmentLifecycleCallbacks> lifecycles) {
    lifecycles.add(new FragmentManager.FragmentLifecycleCallbacks() {
        @Override
        public void onFragmentDestroyed(FragmentManager fm, Fragment f) {
            ((RefWatcher) ArmsUtils
                    .obtainAppComponentFromContext(f.getActivity())
                    .extras()
                    .get(RefWatcher.class.getName()))
                    .watch(f);
        }
    });
}
 

@Override
public void injectFragmentLifecycle(Context context, List<FragmentManager.FragmentLifecycleCallbacks> lifecycles) {
    lifecycles.add(new FragmentManager.FragmentLifecycleCallbacks() {

        @Override
        public void onFragmentCreated(FragmentManager fm, Fragment f, Bundle savedInstanceState) {
            // 在配置变化的时候将这个 Fragment 保存下来,在 Activity 由于配置变化重建是重复利用已经创建的Fragment。
            // https://developer.android.com/reference/android/app/Fragment.html?hl=zh-cn#setRetainInstance(boolean)
            // 在 Activity 中绑定少量的 Fragment 建议这样做,如果需要绑定较多的 Fragment 不建议设置此参数,如 ViewPager 需要展示较多 Fragment
            f.setRetainInstance(true);
        }
    });
}
 

@Override
public void injectFragmentLifecycle(Context context, List<FragmentManager.FragmentLifecycleCallbacks> lifecycles) {
    lifecycles.add(new FragmentManager.FragmentLifecycleCallbacks() {
        @Override
        public void onFragmentDestroyed(FragmentManager fm, Fragment f) {
            ((RefWatcher) ArmsUtils
                    .obtainAppComponentFromContext(f.getActivity())
                    .extras()
                    .get(RefWatcher.class.getName()))
                    .watch(f);
        }
    });
}
 

private void registerFragmentLifecycleCallbacks() {
    final FragmentManager manager = getFragmentManager();
    fragmentLifecycleCallbacks = new FragmentManager.FragmentLifecycleCallbacks() {
        @Override
        public void onFragmentAttached(@NonNull final FragmentManager fm, @NonNull final Fragment fragment,
            @NonNull final Context context) {
            if (fragment instanceof OfflineMethodsFragment) {
                presenter.onOtherPaymentMethodClickableStateChanged(false);
            }
            super.onFragmentAttached(fm, fragment, context);
        }

        @Override
        public void onFragmentDetached(@NonNull final FragmentManager fm, @NonNull final Fragment fragment) {
            if (fragment instanceof ExpressPaymentFragment) {
                fm.unregisterFragmentLifecycleCallbacks(this);
            } else if (fragment instanceof OfflineMethodsFragment) {
                bottomSheet.setVisibility(GONE);
                presenter.onOtherPaymentMethodClickableStateChanged(true);
            }
            super.onFragmentDetached(fm, fragment);
        }
    };

    if (manager != null) {
        manager.registerFragmentLifecycleCallbacks(fragmentLifecycleCallbacks, false);
    }
}
 

@Override
public void injectFragmentLifecycle(Context context, List<FragmentManager.FragmentLifecycleCallbacks> lifecycles) {
}
 

@Override
public void injectFragmentLifecycle(Context context, List<FragmentManager.FragmentLifecycleCallbacks> lifecycles) {
}
 

@Override
public void injectFragmentLifecycle(Context context, List<FragmentManager.FragmentLifecycleCallbacks> lifecycles) {
}
 

@Override
public void injectFragmentLifecycle(Context context, List<FragmentManager.FragmentLifecycleCallbacks> lifecycles) {
    lifecycles.add(new FragmentLifecycleCallbacksImpl());
}
 

@Singleton
@Provides
static List<FragmentManager.FragmentLifecycleCallbacks> provideFragmentLifecycles() {
    return new ArrayList<>();
}
 

@Override
public void injectFragmentLifecycle(Context context, List<FragmentManager.FragmentLifecycleCallbacks> lifecycles) {
    //向Fragment的生命周期中注入一些自定义逻辑
}
 

/**
 * 使用{@link FragmentManager.FragmentLifecycleCallbacks}在Fragment的生命周期中注入一些操作
 *
 * @param context
 * @param lifecycles
 */
void injectFragmentLifecycle(Context context, List<FragmentManager.FragmentLifecycleCallbacks> lifecycles);
 

@Override
public void injectFragmentLifecycle(Context context, List<FragmentManager.FragmentLifecycleCallbacks> lifecycles) {

}
 

/**
 * 使用{@link FragmentManager.FragmentLifecycleCallbacks}在Fragment的生命周期中注入一些操作
 *
 * @param context
 * @param lifecycles
 */
void injectFragmentLifecycle(Context context, List<FragmentManager.FragmentLifecycleCallbacks> lifecycles);
 

/**
 * 使用 {@link FragmentManager.FragmentLifecycleCallbacks} 在 Fragment 的生命周期中注入一些操作
 *
 * @param context:    Context
 * @param lifecycles: List<FragmentManager.FragmentLifecycleCallbacks>
 */
void injectFragmentLifecycle(Context context, List<FragmentManager.FragmentLifecycleCallbacks> lifecycles);