2025年04月30日11:38:01

wjc

2025-04-30 ce9298417731c02a1b41b83049f637abc356fc02

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package com.hdl.photovoltaic.utils; 
 
import android.text.TextUtils; 
 
import java.util.List; 
 
import androidx.annotation.IdRes; 
import androidx.fragment.app.Fragment; 
import androidx.fragment.app.FragmentManager; 
import androidx.fragment.app.FragmentTransaction; 
import androidx.lifecycle.Lifecycle; 
 
/** 
 * Created by Tong on 2021/9/30. 
 */ 
public class FragmentUtils { 
 
    public static <T> Fragment findFragment(Class<T> fragmentClass, FragmentManager manager) { 
        if (fragmentClass == null || manager == null) return null; 
        for (Fragment fragment : manager.getFragments()) { 
            if (fragment.getClass() == fragmentClass) { 
                return fragment; 
            } 
        } 
        return null; 
    } 
 
    public static Fragment findFragment(String tag, FragmentManager manager) { 
        if (manager == null || TextUtils.isEmpty(tag)) return null; 
        for (Fragment fragment : manager.getFragments()) { 
            if (tag.equals(fragment.getTag())) { 
                return fragment; 
            } 
        } 
        return null; 
    } 
 
    public static void loadMultipleFragment(@IdRes int layoutId, FragmentManager manager, Fragment... fragments) { 
        loadMultipleFragment(layoutId, 0, manager, fragments); 
    } 
 
    public static void loadMultipleFragment(@IdRes int layoutId, int showPosition, FragmentManager manager, Fragment... fragments) { 
        if (manager == null || fragments.length == 0) return; 
 
        removeAllFragments(manager); 
 
        FragmentTransaction beginTransaction = manager.beginTransaction(); 
 
        for (int i = 0; i < fragments.length; i++) { 
            Fragment fragment = fragments[i]; 
            if (fragment != null) { 
                if (!fragment.isAdded()) { 
                    beginTransaction.add(layoutId, fragment); 
                } 
                if (i == showPosition) { 
                    beginTransaction.setMaxLifecycle(fragment, Lifecycle.State.RESUMED) 
                            .show(fragment); 
                } else { 
                    beginTransaction.setMaxLifecycle(fragment, Lifecycle.State.CREATED) 
                            .hide(fragment); 
                } 
 
            } 
        } 
        beginTransaction.commitAllowingStateLoss(); 
    } 
 
    public static void showHideFragment(FragmentManager manager, Fragment showFragment) { 
        if (manager == null) return; 
        final List<Fragment> fragments = manager.getFragments(); 
        final FragmentTransaction beginTransaction = manager.beginTransaction(); 
        for (Fragment fragment : fragments) { 
            if (fragment != showFragment) { 
                beginTransaction 
                        .setMaxLifecycle(fragment, Lifecycle.State.STARTED) 
                        .hide(fragment); 
            } 
        } 
        beginTransaction 
                .setMaxLifecycle(showFragment, Lifecycle.State.RESUMED) 
                .show(showFragment).commitAllowingStateLoss(); 
 
    } 
 
    public static void removeAllFragments(FragmentManager manager) { 
        if (manager == null) return; 
        try { 
            FragmentTransaction transaction = manager.beginTransaction(); 
            final List<Fragment> fragments = manager.getFragments(); 
            for (int i = 0; i < fragments.size(); i++) { 
                Fragment fragment = fragments.get(i); 
                if (fragment != null) { 
//                    FragmentManager childManager = fragment.getChildFragmentManager(); 
//                    removeAllFragments(childManager); 
                    transaction.remove(fragment); 
                } 
            } 
            transaction.commitAllowingStateLoss(); 
        } catch (Exception e) { 
            e.printStackTrace(); 
        } 
 
    } 
}